阅读说明：本技术 舷外机预警保护装置及预警保护方法 (Outboard engine early warning protection device and early warning protection method ) 是由 郑华理 魏端正 于 2021-07-08 设计创作，主要内容包括：本发明涉及一种舷外机预警保护装置,包括：发动机,水下螺旋桨；发动机包括：机体,冷却水循环系统,机油润滑系统,设有燃油滤清器、电动汽油泵和喷油器的燃油系统,设有换挡拨杆、启动开关的换挡机构,预警保护装置；预警保护装置包括：装于机体上的电子控制单元、爆震传感器,装于冷却水循环系统进口端的水压力传感器,装于冷却水循环系统出口端的水温传感器,装于换挡机构上且与换挡拨杆相对的空档传感器,急停开关；爆震传感器、水压力传感器、水温传感器、急停开关、空档传感器和启动开关分别与电子控制单元电性连接。所述的舷外机预警保护装置,能及时检测发现故障,能及时进行停机检修延长发动机使用寿命。(The invention relates to an outboard engine early warning protection device, which comprises: engines, underwater propellers; the engine includes: the engine comprises a machine body, a cooling water circulation system, an engine oil lubricating system, a fuel oil system provided with a fuel oil filter, an electric gasoline pump and a fuel injector, a gear shifting mechanism provided with a gear shifting deflector rod and a starting switch, and an early warning protection device; the early warning protection device includes: the electronic control unit and the knock sensor are arranged on the machine body, the water pressure sensor is arranged at the inlet end of the cooling water circulation system, the water temperature sensor is arranged at the outlet end of the cooling water circulation system, the neutral position sensor is arranged on the gear shifting mechanism and is opposite to the gear shifting deflector rod, and the emergency stop switch is arranged on the gear shifting mechanism; the knock sensor, the water pressure sensor, the water temperature sensor, the emergency stop switch, the neutral position sensor and the starting switch are respectively and electrically connected with the electronic control unit. The outboard engine early warning protection device can detect and find faults in time, and can shut down to overhaul in time to prolong the service life of an engine.)

1. An outboard engine early warning protection device comprising: engines, underwater propellers; the engine includes: the organism, cooling water circulation system, machine oil lubricating system is equipped with the fuel oil system who fires oil filter, electronic gasoline pump and sprayer, is equipped with the gearshift lever of shifting, starting switch, characterized by, outboard engine early warning protection device still include: an early warning protection device; the early warning protection device includes: the electronic control unit and the knock sensor are arranged on the machine body, the water pressure sensor is arranged at the inlet end of the cooling water circulation system, the water temperature sensor is arranged at the outlet end of the cooling water circulation system, the neutral position sensor is arranged on the gear shifting mechanism, and the emergency stop switch is arranged on the machine body; the knock sensor, the water pressure sensor, the water temperature sensor, the emergency stop switch, the neutral position sensor and the starting switch are respectively and electrically connected with the electronic control unit.

2. The outboard engine early warning and protecting device according to claim 1, wherein the scram switch comprises: a stepped push rod sleeve with a big end positioned at the upper side and a stepped middle hole with a big end positioned at the upper side, a lock shell with a stepped hole with a small end sleeved outside the small end of the stepped push rod sleeve, a waterproof cap cover with a drum-shaped inner hole at the upper part and a lower end sleeved outside the big end of the stepped push rod sleeve, a baffle ring positioned in the drum-shaped inner hole at the upper end and a push rod with a lower end penetrating through the stepped middle hole and extending into the large end of the stepped hole, a sealing cover connected with the lower end of the push rod in sequence, a movable contact with an upper counter bore at the lower end, a snap spring and a flat washer positioned on the upper side of the sealing cover in sequence, a lower counter bore positioned at the bottom of the stepped hole, two fixed contacts positioned outside the sunken hole, two ends press upper pressure springs at the bottom surface of the stepped middle hole and the lower end of the baffle ring one by one, two ends press pressure springs in the top surface of the large end of the stepped hole and the flat washer one by one, and two ends press the lower pressure springs at the top surface of the upper counter bore and the bottom surface of the sunken hole by one, a flameout component provided with a connecting clamp clamped between the lower end of the stepped push rod sleeve and the upper end of the lock shell; the side wall of the sealing cover is connected with the inner side wall of the lock shell.

3. The outboard engine pre-warning protector as claimed in claim 2, wherein said flameout cord assembly comprises: the two ends of the telescopic extinguishing rope are correspondingly connected with the hook and the connecting clip one by one; the connecting clip is provided with a clamping groove with the width matched with the diameter of the small end of the stepped push rod sleeve.

4. The outboard engine warning protector as claimed in claim 2 or 3, wherein said lock case includes: the lower end of the upper lock shell is provided with a packaging counter bore, the lower lock shell is detachably connected with the upper lock shell, the hole type joint terminal is arranged on the top surface of the packaging counter bore, the lower end of the hole type joint terminal extends out of the lower end of the lower lock shell, and the two wires 32 penetrate through the hole type joint terminal and are connected with the lower ends of the two fixed contacts in a one-to-one correspondence manner; filling sealant in the packaging counter bore; the lower end of the upper lock shell and the upper end of the lower lock shell respectively press the side walls of the sealing cover.

5. The outboard engine early warning and protecting device as claimed in claim 2 or 3, wherein a plurality of sealing rings are arranged between the small end of the stepped push rod sleeve and the small end of the stepped hole.

6. The outboard engine early warning protection device according to claim 1, 2 or 3, wherein the early warning protection device further comprises: the engine oil pressure sensor is arranged on a shell of the engine oil lubricating system, and the accumulated water sensor is arranged on the fuel oil filter; the engine oil pressure sensor and the water accumulation sensor are respectively electrically connected with the electronic control unit.

7. The outboard engine early warning and protecting device as claimed in claim 1, 2 or 3, wherein the electronic control unit is provided with a knock indicator lamp, a cooling water pressure indicator lamp, a water temperature indicator lamp, a neutral indicator lamp, an emergency stop indicator lamp, an engine oil pressure indicator lamp, a water accumulation indicator lamp and a buzzer.

8. An early warning protection method of an outboard engine early warning protection device, wherein the outboard engine early warning protection device is the outboard engine early warning protection device of any one of claims 1 to 7, and is characterized in that (1) when a water pressure sensor detects that the cooling water pressure is lower than a set pressure value, the water pressure sensor transmits a signal to an electronic control unit, a water pressure indicator lamp is lightened, and a buzzer sounds to remind a driver of insufficient water pressure; (2) when the water temperature sensor detects that the cooling water temperature is higher than a set temperature value and the cooling effect is reduced, the water temperature sensor transmits a signal to the electronic control unit, the electronic control unit controls the speed limit of the engine to carry out speed-limiting cooling protection, the water pressure indicator lamp is lightened, the buzzer sounds, the indicator lamp is lightened, the buzzer sounds, and a driver is reminded to overhaul the cooling water circulation system; (3) when the engine oil pressure sensor detects that the engine oil pressure is lower than a set pressure value, the engine oil pressure sensor transmits a signal to the electronic control unit, the electronic control unit controls the speed limit of the engine, the engine oil pressure indicator lamp is lightened, the buzzer sounds, and a driver is reminded to stop to overhaul the engine oil lubricating system; (4) when the knock sensor detects that the engine is overheated and the power is attenuated, the knock sensor transmits a signal to the electronic control unit, the electronic control unit controls ignition and oil injection to limit the speed of the engine, the knock indicator lamp is lightened, the buzzer sounds, and a driver is reminded to stop to overhaul the engine; (5) when the water accumulation sensor detects that the accumulated water in the fuel filter reaches a set value, the water accumulation sensor transmits a signal to the electronic control unit, the electronic control unit 4 controls the water accumulation indicator lamp to be turned on and the buzzer to sound, so that a driver is reminded that the fuel oil is mixed with water and the fuel oil system needs to be overhauled, and the problem that the engine is damaged due to serious poor combustion caused by the fact that the water is pumped into the fuel oil injector by the electric gasoline pump is solved; (6) the engine 1 is ensured to be started safely through the neutral position sensor, when the engine is started, the gear shifting deflector rod is in the neutral position and presses the neutral position sensor, the neutral position sensor transmits a signal to the electronic control unit, the neutral position indicator lamp is lightened, then the starting switch is screwed to start the engine, meanwhile, the ignition oil quantity of the oil sprayer can be controlled accurately, and the driving comfort is improved when the gear is shifted; when the gear shifting deflector rod is in a forward gear position or a reverse gear position, the engine cannot be started, and danger caused by rapid acceleration during starting is avoided; (7) when the emergency stop switch is used, the hook is hung at the waist of a user, the connecting clamp is clamped between the lower end of the stepped push rod sleeve and the upper end of the lock shell, and the movable contact spring is separated from the fixed contact under the action of the lower pressure spring; when a user carelessly falls into water, the connecting clamp is separated from the position between the lower end of the stepped push rod sleeve and the upper end of the lock shell, under the action of the medium-pressure spring, the movable contact piece moves downwards along with the push rod and overcomes the resistance of the lower-pressure spring and presses the upper ends of the two fixed contacts, the emergency stop switch is communicated and transmits signals to the electronic control unit, the electronic control unit controls the engine to stop working, the underwater propeller to stop running immediately, the emergency stop indicator lamp to be lightened, the buzzer to sound, the injury to the person falling into water is avoided, and the person falling into water is rescued; (8) the connecting clamp is clamped between the lower end of the stepped push rod sleeve and the upper end of the lock shell, when the movable contact piece is separated from the fixed contacts, the waterproof cap cover is pressed, the movable contact piece overcomes the resistance of the upper pressure spring and the lower pressure spring along with the push rod to move downwards and press the upper ends of the two fixed contacts, the emergency stop switch is communicated and transmits signals to the electronic control unit, and the electronic control unit controls the engine to stop working when the engine stops working.

Technical Field

The invention relates to the technical field of power devices for propelling detachable boats and ships, in particular to an outboard engine early warning protection device and an outboard engine early warning protection method.

Background

The outboard engine is a detachable propulsion power device which is hung on a stern board of a boat and can push the boat and the boat to sail, and is also called as an outboard engine, a outboard engine and a outboard engine; the outboard engine mainly comprises an engine, a transmission device, an operation device, a suspension device, a propeller and the like. The structure of outboard engines is known from one disclosed in the utility model of the chinese patent application No. 202020863303.7; various failures may occur in the use of outboard engines, such as: faults of an engine cooling water circulation system, faults of an engine oil lubricating system, overheat power attenuation of an engine, water mixed in fuel oil and the like; the traditional outboard engine has the defects that faults cannot be detected and found in time, and the service life of an engine is influenced because the outboard engine cannot be stopped and overhauled in time; therefore, the outboard engine early warning protection device and the outboard engine early warning protection method which can detect and find faults in time and can carry out shutdown maintenance in time to prolong the service life of the engine are designed, and the problem to be solved urgently is solved.

Disclosure of Invention

The invention aims to overcome the defects that the conventional outboard engine cannot be detected and repaired in time and the service life of an engine cannot be influenced, and provides an outboard engine early warning protection device and an outboard engine early warning protection method which can be used for detecting and repairing the fault in time and prolonging the service life of the engine in time.

The specific technical scheme of the invention is as follows:

an outboard engine early warning protection device comprising: engines, underwater propellers; the engine includes: the engine comprises a machine body, a cooling water circulation system, an engine oil lubricating system, a fuel oil system provided with a fuel oil filter, an electric gasoline pump and a fuel injector, a gear shifting mechanism provided with a gear shifting deflector rod and a starting switch, and an early warning protection device; the early warning protection device includes: the electronic control unit and the knock sensor are arranged on the machine body, the water pressure sensor is arranged at the inlet end of the cooling water circulation system, the water temperature sensor is arranged at the outlet end of the cooling water circulation system, the neutral position sensor is arranged on the gear shifting mechanism and is opposite to the gear shifting deflector rod, and the emergency stop switch is arranged on the gear shifting mechanism; the knock sensor, the water pressure sensor, the water temperature sensor, the emergency stop switch, the neutral position sensor and the starting switch are respectively and electrically connected with the electronic control unit. The engine and the underwater propeller adopt the existing mature technology.

Preferably, the emergency stop switch comprises: a stepped push rod sleeve with a big end positioned at the upper side and a stepped middle hole with a big end positioned at the upper side, a lock shell with a stepped hole with a small end sleeved outside the small end of the stepped push rod sleeve, a waterproof cap cover with a drum-shaped inner hole at the upper part and a lower end sleeved outside the big end of the stepped push rod sleeve, a baffle ring positioned in the drum-shaped inner hole at the upper end and a push rod with a lower end penetrating through the stepped middle hole and extending into the large end of the stepped hole, a sealing cover connected with the lower end of the push rod in sequence, a movable contact with an upper counter bore at the lower end, a snap spring and a flat washer positioned on the upper side of the sealing cover in sequence, a lower counter bore positioned at the bottom of the stepped hole, two fixed contacts positioned outside the sunken hole, two ends press upper pressure springs at the bottom surface of the stepped middle hole and the lower end of the baffle ring one by one, two ends press pressure springs in the top surface of the large end of the stepped hole and the flat washer one by one, and two ends press the lower pressure springs at the top surface of the upper counter bore and the bottom surface of the sunken hole by one, a flameout component provided with a connecting clamp clamped between the lower end of the stepped push rod sleeve and the upper end of the lock shell; the side wall of the sealing cover is connected with the inner side wall of the lock shell; the waterproof cap is made of fluororubber; the sealing cover is made of rubber; the fixed contact is a silver contact.

Preferably, said extinguisher cord assembly comprises: the two ends of the telescopic extinguishing rope are correspondingly connected with the hook and the connecting clip one by one; the connecting clip is provided with a clamping groove with the width matched with the diameter of the small end of the stepped push rod sleeve.

Preferably, the lock case includes: the lower end of the upper lock shell is provided with a packaging counter bore, the lower lock shell is detachably connected with the upper lock shell, the hole type joint terminal is arranged on the top surface of the packaging counter bore, the lower end of the hole type joint terminal extends out of the lower end of the lower lock shell, and the two wires 32 penetrate through the hole type joint terminal and are connected with the lower ends of the two fixed contacts in a one-to-one correspondence manner; filling sealant in the packaging counter bore; the lower end of the upper lock shell and the upper end of the lower lock shell respectively press the side walls of the sealing cover.

Preferably, a plurality of sealing rings are arranged between the small end of the stepped push rod sleeve and the small end of the stepped hole.

Preferably, the early warning protection device further comprises: the engine oil pressure sensor is arranged on a shell of the engine oil lubricating system, and the accumulated water sensor is arranged on the fuel oil filter; the engine oil pressure sensor and the water accumulation sensor are respectively electrically connected with the electronic control unit.

Preferably, the electronic control unit is provided with a detonation indicator lamp, a cooling water pressure indicator lamp, a water temperature indicator lamp, a neutral indicator lamp, an emergency stop indicator lamp, an engine oil pressure indicator lamp, a water accumulation indicator lamp and a buzzer.

The early warning protection method of the outboard engine early warning protection device comprises the steps that (1) when the water pressure sensor detects that the pressure of cooling water is lower than a set pressure value, the water pressure sensor transmits a signal to the electronic control unit, the water pressure indicator lamp is turned on, and the buzzer sounds to remind a driver of insufficient water pressure; (2) when the water temperature sensor detects that the cooling water temperature is higher than a set temperature value and the cooling effect is reduced, the water temperature sensor transmits a signal to the electronic control unit, the electronic control unit controls the speed limit of the engine to carry out speed-limiting cooling protection, the water pressure indicator lamp is lightened, the buzzer sounds, the indicator lamp is lightened, the buzzer sounds, and a driver is reminded to overhaul the cooling water circulation system; (3) when the engine oil pressure sensor detects that the engine oil pressure is lower than a set pressure value, the engine oil pressure sensor transmits a signal to the electronic control unit, the electronic control unit controls the speed limit of the engine, the engine oil pressure indicator lamp is lightened, the buzzer sounds, and a driver is reminded to stop to overhaul the engine oil lubricating system; (4) when the knock sensor detects that the engine is overheated and the power is attenuated, the knock sensor transmits a signal to the electronic control unit, the electronic control unit controls ignition and oil injection to limit the speed of the engine, the knock indicator lamp is lightened, the buzzer sounds, and a driver is reminded to stop to overhaul the engine; (5) when the water accumulation sensor detects that the accumulated water in the fuel filter reaches a set value, the water accumulation sensor transmits a signal to the electronic control unit, the electronic control unit 4 controls the water accumulation indicator lamp to be turned on and the buzzer to sound, so that a driver is reminded that the fuel oil is mixed with water and the fuel oil system needs to be overhauled, and the problem that the engine is damaged due to serious poor combustion caused by the fact that the water is pumped into the fuel oil injector by the electric gasoline pump is solved; (6) the engine 1 is ensured to be started safely through the neutral position sensor, when the engine is started, the gear shifting deflector rod is in the neutral position and presses the neutral position sensor, the neutral position sensor transmits a signal to the electronic control unit, the neutral position indicator lamp is lightened, then the starting switch is screwed to start the engine, meanwhile, the ignition oil quantity of the oil sprayer can be controlled accurately, and the driving comfort is improved when the gear is shifted; when the gear shifting deflector rod is in a forward gear position or a reverse gear position, the engine cannot be started, and danger caused by rapid acceleration during starting is avoided; (7) when the emergency stop switch is used, the hook is hung at the waist of a user, the connecting clamp is clamped between the lower end of the stepped push rod sleeve and the upper end of the lock shell, and the movable contact spring is separated from the fixed contact under the action of the lower pressure spring; when a user carelessly falls into water, the connecting clamp is separated from the position between the lower end of the stepped push rod sleeve and the upper end of the lock shell, under the action of the medium-pressure spring, the movable contact piece moves downwards along with the push rod and overcomes the resistance of the lower-pressure spring and presses the upper ends of the two fixed contacts, the emergency stop switch is communicated and transmits signals to the electronic control unit, the electronic control unit controls the engine to stop working, the underwater propeller to stop running immediately, the emergency stop indicator lamp to be lightened, the buzzer to sound, the injury to the person falling into water is avoided, and the person falling into water is rescued; (8) the connecting clamp is clamped between the lower end of the stepped push rod sleeve and the upper end of the lock shell, when the movable contact piece is separated from the fixed contacts, the waterproof cap cover is pressed, the movable contact piece overcomes the resistance of the upper pressure spring and the lower pressure spring along with the push rod to move downwards and press the upper ends of the two fixed contacts, the emergency stop switch is communicated and transmits signals to the electronic control unit, and the electronic control unit controls the engine to stop working when the engine stops working.

Compared with the prior art, the invention has the beneficial effects that: the outboard engine early warning protection device detects the engine in real time through a knock sensor, a water pressure sensor, a water temperature sensor, an engine oil pressure sensor and a water accumulation sensor which are respectively and electrically connected with an Electronic Control Unit (ECU), can detect and find faults in time, can shut down and overhaul in time and prolong the service life of the engine; the engine can be started only in a neutral position through the neutral position sensor and the starting switch which are electrically connected with the electronic control unit, and the safety is ensured; through the emergency stop switch electrically connected with the electronic control unit, when a user carelessly falls into water, the emergency stop switch is communicated and transmits a signal to the electronic control unit, and the electronic control unit controls the engine to stop working, the underwater propeller to stop running immediately and the buzzer to sound, so that the person falling into water is prevented from being injured and rescued; when emergency shutdown is needed, the waterproof cap cover is pressed, the movable contact piece overcomes the resistance of the upper pressure spring and the lower pressure spring to move downwards along with the push rod and presses the upper ends of the two fixed contacts, the emergency shutdown switch is communicated and transmits signals to the electronic control unit, and the electronic control unit controls the engine to stop working after flameout. The emergency stop switch has a compact structure, and can realize emergency stop passing safety when a user carelessly falls into water or needs emergency stop. The flameout rope assembly is simple and practical in structure. The lock shell comprises an upper lock shell and a lower lock shell detachably connected with the upper lock shell, and is convenient to assemble and disassemble. The lower end of the hole type joint terminal extends out of the lower end of the lower lock shell, the two wires 32 penetrate through the hole type joint terminal, and one end of each wire is correspondingly connected with the lower ends of the two fixed contacts one by one, so that the wires 32 are protected. A plurality of sealing rings are arranged between the small end of the stepped push rod sleeve and the small end of the stepped hole, and sealing glue is filled in the packaging counter bore to facilitate sealing.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of the emergency stop switch;

fig. 3 is a schematic diagram of the early warning protection device.

In the figure: the engine 1, the underwater propeller 2, the machine body 3, the electronic control unit 4, the detonation sensor 5, the water pressure sensor 6, the water temperature sensor 7, the stepped middle hole 8, the stepped push rod sleeve 9, the stepped hole 10, the drum-shaped inner hole 11, the waterproof cap 12, the baffle ring 13, the push rod 14, the sealing cover 15, the upper counter bore 16, the movable contact piece 17, the snap spring 18, the flat washer 19, the lower counter bore 20, the fixed contact 21, the upper pressure spring 22, the middle pressure spring 23, the lower pressure spring 24, the connecting clamp 25, the hook 26, the telescopic fire extinguishing rope 27, the clamping groove 28, the upper lock shell 29, the packaging counter bore 30, the lower lock shell 31, the joint terminal 32, the conducting wire 33, the sealant 34, the sealing ring 35, the engine oil pressure sensor 36, the accumulated water sensor 37, the neutral position sensor 38, the emergency stop switch 39, the buzzer 40, the detonation indicator lamp 41, the cooling water pressure indicator lamp 42, the water temperature indicator lamp 43 and the neutral position indicator lamp 44, an emergency stop indicator lamp 45, an oil pressure indicator lamp 46 and a water accumulation indicator lamp 47.

Detailed Description

The invention will be further described with reference to the drawings.

As shown in the attached figures 1, 2 and 3: an outboard engine early warning protection device comprising: an engine 1, an underwater propeller 2; the engine 1 includes: organism 3, cooling water circulation system, machine oil lubricating system is equipped with the fuel oil system who fires oil filter, electronic gasoline pump and sprayer, is equipped with the gearshift of the driving lever of shifting, starting switch, outboard engine early warning protection device still include: an early warning protection device; the early warning protection device includes: an electronic control unit 4 and a knock sensor 5 which are arranged on the machine body 3, a water pressure sensor 6 which is arranged at the inlet end of a cooling water circulation system, a water temperature sensor 7 which is arranged at the outlet end of the cooling water circulation system, a neutral position sensor 38 which is arranged on a gear shifting mechanism and is opposite to a gear shifting deflector rod, and an emergency stop switch 39 which is arranged on the electronic control unit 4; the knock sensor 5, the water pressure sensor 6, the water temperature sensor 7, the emergency stop switch 39, the neutral position sensor 38 and the start switch are respectively and electrically connected with the electronic control unit 4.

The scram switch 39 includes: a stepped push rod sleeve 9 with a big end positioned at the upper side and provided with a stepped middle hole 8 with a big end positioned at the upper side, a lock shell provided with a stepped hole 10 with a small end sleeved outside the small end of the stepped push rod sleeve 9, a waterproof cap 12 with a drum-shaped inner hole 11 arranged at the upper part and a lower end sleeved outside the big end of the stepped push rod sleeve 9, a baffle ring 13 arranged at the upper end and a baffle ring 13 arranged in the drum-shaped inner hole 11, a push rod 14 with a lower end penetrating through the stepped middle hole 8 and extending into the big end of the stepped hole 10, a sealing cover 15 screwed with the lower end of the push rod 14 in sequence, a movable contact spring 17 with an upper counter bore 16 arranged at the lower end, a snap spring 18 and a flat washer 19 arranged on the push rod 14 and arranged at the upper side of the sealing cover 15 in sequence, a sinking hole 20 arranged at the bottom of the stepped push rod 10, two fixed contacts 21 symmetrically arranged at the outer side of the lower counter bore 20, two ends press upper pressure springs 22 at the big end bottom surface of the stepped middle hole 8 and the lower end of the baffle ring 13 in one-to one correspondence, two ends press a top surface of the big end of the stepped push rod 10 and a middle pressure spring 23 at the upper end of the flat washer 19, the two ends of the lower compression spring 24 press the top surface of the upper counter bore 16 and the bottom surface of the lower counter bore 20 one by one, and the flameout component is provided with a connecting clip 25 clamped between the lower end of the stepped push rod sleeve 9 and the upper end of the lock shell; the side wall of the sealing cover 15 is connected with the inner side wall of the lock shell; the waterproof cap 12 is made of fluororubber; the material of the sealing cover 15 is rubber; the fixed contact 21 is a silver contact. Fig. 2 shows a state in which the movable contact piece 17 presses the upper ends of the two fixed contacts 21 and the scram switch 39 is turned on.

The extinguisher cord assembly comprising: a hook 26, a telescopic extinguishing rope 27 with two ends connected with the hook 26 and the connecting clip 25 in a one-to-one correspondence manner; the connecting clip 25 is provided with a clamping groove 28 with the width in clearance fit with the diameter of the small end of the stepped push rod sleeve 9.

In this embodiment, the lock case includes: the lower end of the upper lock shell 29 is provided with a packaging counter bore 30, the lower lock shell 31 is in threaded connection with the upper lock shell 29, the hole type joint terminal 32 is arranged on the top surface of the packaging counter bore 30, the lower end of the hole type joint terminal extends out of the lower end of the lower lock shell 31, and the two wires 33 penetrate through the hole type joint terminal 32 and are connected with the lower ends of the two fixed contacts 21 in a one-to-one correspondence mode; the packaging counter bore 30 is filled with sealant 34; the lower end of the upper lock shell 29 and the upper end of the lower lock shell 31 respectively press the side walls of the sealing cover 15.

Two sealing rings 35 are arranged between the small end of the stepped push rod sleeve 9 and the small end of the stepped hole 10.

The early warning protection device further comprises: an engine oil pressure sensor 36 mounted on a housing provided in the engine oil lubrication system, and a water accumulation sensor 37 mounted on the fuel filter; the engine oil pressure sensor 36 and the accumulated water sensor 37 are respectively electrically connected with the electronic control unit 4.

The electronic control unit 4 is provided with a detonation indicator lamp 41, a cooling water pressure indicator lamp 42, a water temperature indicator lamp 43, a neutral indicator lamp 44, an emergency stop indicator lamp 45, an engine oil pressure indicator lamp 46, a water accumulation indicator lamp 47 and a buzzer 40.

The early warning protection method of the outboard engine early warning protection device is characterized in that (1) when the water pressure sensor 6 detects that the pressure of cooling water is lower than a set pressure value, the water pressure sensor 6 transmits a signal to the electronic control unit 4, the water pressure indicator lamp is turned on, and the buzzer 40 sounds to remind a driver of insufficient water pressure; (2) when the water temperature sensor 7 detects that the cooling effect is reduced when the temperature of the cooling water is higher than a set temperature value, the water temperature sensor 7 transmits a signal to the electronic control unit 4, the electronic control unit 4 controls the engine 1 to limit the speed and perform speed-limiting temperature reduction protection, the water pressure indicator lamp is lightened, the buzzer 40 sounds, the indicator lamp is lightened, the buzzer 40 sounds, and a driver is reminded to overhaul the cooling water circulation system; (3) when the engine oil pressure sensor 36 detects that the engine oil pressure is lower than a set pressure value, the engine oil pressure sensor 36 transmits a signal to the electronic control unit 4, the electronic control unit 4 controls the engine 1 to limit the speed, the engine oil pressure indicator lamp 46 is lightened, and the buzzer 40 sounds to remind a driver to stop and overhaul the engine oil lubricating system; (4) when the knock sensor 5 detects that the power of the engine 1 is overheated to attenuate, the knock sensor 5 transmits a signal to the electronic control unit 4, the electronic control unit 4 controls ignition and oil injection to limit the speed of the engine 1, the knock indicator 41 is lightened, and the buzzer 40 sounds to remind a driver to stop and overhaul the engine 1; (5) when the accumulated water sensor 37 detects that accumulated water in the fuel filter reaches a set value, the accumulated water sensor 37 transmits a signal to the electronic control unit 4, the electronic control unit 4 controls the accumulated water indicator lamp 47 to be turned on and the buzzer 40 to sound to remind a driver that water is mixed in fuel oil and the fuel oil system needs to be overhauled, so that the situation that the serious poor combustion is caused because the water is pumped into a fuel injector by the electric gasoline pump to damage the engine 1 is prevented; (6) the engine 1 is ensured to be started safely through the neutral position sensor 38, when the engine 1 is started, the gear shifting shift lever is in a neutral position and presses the neutral position sensor 38, the neutral position sensor 38 transmits a signal to the electronic control unit 4, the neutral position indicator lamp 44 is lightened, then the engine 1 can be started only by screwing the starting switch, meanwhile, the ignition oil quantity of an oil sprayer can be controlled accurately, and the driving comfort is improved during gear shifting; when the gear shifting deflector rod is in a forward gear position or a reverse gear position, the engine 1 cannot be started, and danger caused by rapid acceleration during starting is avoided; (7) when the emergency stop switch 39 is used, the hook 26 is hung at the waist of a user, the connecting clip 25 is clamped between the lower end of the stepped push rod sleeve 9 and the upper end of the lock shell, and the movable contact 17 is separated from the fixed contact 21 under the action of the lower pressure spring 24; when a user carelessly falls into the water, the connecting clamp 25 is separated from the position between the lower end of the stepped push rod sleeve 9 and the upper end of the lock shell, under the action of the medium pressure spring 23, the movable contact piece 17 moves downwards along with the push rod 14 by overcoming the resistance of the lower pressure spring 24 and presses the upper ends of the two fixed contacts 21, the emergency stop switch 39 is communicated and transmits signals to the electronic control unit 4, the electronic control unit 4 controls the engine 1 to stop working, the underwater propeller 2 to stop running immediately, the emergency stop indicator lamp 45 to be lightened, and the buzzer 40 to sound, so that the person falling into the water is prevented from being injured and rescued; (8) the connecting clamp 25 is clamped between the lower end of the stepped push rod sleeve 9 and the upper end of the lock shell, when the movable contact piece 17 is separated from the fixed contacts 21, the waterproof cap cover 12 is pressed, the movable contact piece 17 moves downwards along with the push rod 14 to overcome the resistance of the upper pressure spring 22 and the lower pressure spring 24 and presses the upper ends of the two fixed contacts 21, the emergency stop switch 39 is communicated and transmits signals to the electronic control unit 4, and the electronic control unit 4 controls the engine 1 to stop working.

In addition to the above embodiments, the technical features or technical data of the present invention may be reselected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and are within the protection scope of the present invention.