阅读说明：本技术 一种发动机断油装置 (Engine oil-cut-off device ) 是由 梁大鸿 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种发动机断油装置,其中,包括燃油泵、电磁铁继电器、水温传感器,燃油泵电源正极与电磁铁继电器的电磁端子负极连接,燃油泵电源负极与电源负极连接,电磁铁继电器的电磁端子正极连接电源正极,水温传感器(内部热敏电阻为NTC型)正极与电磁铁继电器的常闭触头负极连接,电磁铁继电器的常闭触头正极与电源正极连接,水温传感器与发动机接触；当汽车发动的温度高于某一设定温度时,水温传感器内部的热敏电阻(NTC型)导通,电磁铁继电器的线圈得电,电磁铁继电器触头从常闭状态到常开状态,燃油泵停止对发动机供油,有效的避免了发动机的温度过高。(The invention discloses an engine oil cut-off device, which comprises a fuel pump, an electromagnet relay and a water temperature sensor, wherein the anode of a fuel pump power supply is connected with the cathode of an electromagnetic terminal of the electromagnet relay; when the temperature of the automobile engine is higher than a certain set temperature, a thermistor (NTC type) in the water temperature sensor is conducted, a coil of the electromagnet relay is electrified, a contact of the electromagnet relay is in a normally closed state to a normally open state, the fuel pump stops supplying fuel to the engine, and the over-high temperature of the engine is effectively avoided.)

1. The utility model provides an engine fuel cut-off device, a serial communication port, including fuel pump (1), electromagnet relay (2), water temperature sensor (3), fuel pump (1) power positive pole is connected with the electromagnetic terminal negative pole of electromagnet relay (2), fuel pump (1) power negative pole is connected with the power negative pole, the electromagnetic terminal positive pole of electromagnet relay (2) is connected the power positive pole, water temperature sensor (3) positive pole is connected with the normally closed contact negative pole of electromagnet relay (2), the normally closed contact positive pole of electromagnet relay (2) is connected with the power positive pole.

2. The engine fuel cut-off device according to claim 1, characterized in that: the water temperature sensor is characterized by further comprising an NPN triode, the negative electrode of the water temperature sensor (3) is connected with the base electrode of the NPN triode, and the negative electrode of a normally closed contact of the electromagnet relay (2) is connected with the collector electrode of the NPN triode.

3. The engine fuel cut-off device according to claim 1 or 2, characterized in that: the water-temperature sensor (3) is arranged in the water tank.

4. The engine fuel cut-off device according to claim 2, characterized in that: the automobile water temperature sensor is characterized by further comprising an automobile main controller, and the power supply anode of the water temperature sensor (3) is connected with the output power supply anode of the automobile main controller.

5. The engine fuel cut-off device according to claim 4, characterized in that: and a resistor R1 is connected in series between the positive electrode of the water temperature sensor (3) and the connecting wire of the positive electrode of the output power supply of the automobile main controller.

6. The engine fuel cut-off device according to claim 5, characterized in that: the positive electrode of a power supply of the water temperature sensor (3) is connected with the shell of the automobile main controller and then connected with the base electrode of the NPN triode, and the shell of the automobile main controller is insulated from other metal devices of the automobile.

Technical Field

The invention relates to an engine oil cut-off device.

Background

In the process of fuel oil burning of a gasoline engine, the temperature of the engine is continuously increased, the temperature of the engine is overhigh, the power of the engine is easily reduced, the acceleration is weak, the oil consumption is increased, abnormal combustion is caused, lubricating oil is deteriorated and coked, an oil film between moving parts is damaged, parts are abraded and aggravated, the temperature causes the seizure of bearings of a big end and a small end of a crankshaft side rod, a piston ring is broken, a cylinder is pulled, a tile is burned, and a cylinder is locked, the service life of the engine is shortened, and the driving safety of a driver.

Disclosure of Invention

In order to solve the technical problem, the invention provides an engine oil cut-off device.

The invention is realized by the following technical scheme.

The invention provides an engine oil cut-off device which comprises a fuel pump, an electromagnet relay and a water temperature sensor, wherein the anode of a fuel pump power supply is connected with the cathode of an electromagnetic terminal of the electromagnet relay, the cathode of the fuel pump power supply is connected with the cathode of the power supply, the anode of the electromagnetic terminal of the electromagnet relay is connected with the anode of the power supply, the anode of the water temperature sensor (an internal thermistor is of an NTC type) is connected with the cathode of a normally closed contact of the electromagnet relay, the anode of the normally closed contact of the electromagnet relay is connected with the anode of the power supply, and the water temperature sensor is.

The invention has the beneficial effects that: when the temperature of the automobile engine is higher than a certain set temperature, a thermistor (NTC type) in the water temperature sensor is conducted, a coil of the electromagnet relay is electrified, a contact of the electromagnet relay is in a normally closed state to a normally open state, and the fuel pump stops supplying fuel to the engine, so that the problems caused by overhigh temperature of the engine (such as reduction of engine power, incapability of acceleration, increase of fuel consumption, abnormal combustion, deterioration and coking of lubricating oil, damage of an oil film between moving parts, aggravation of abrasion of parts, seizure of a large-end bearing and a small-end bearing of a crankshaft side rod, breakage of a piston ring, cylinder pulling, tile burning and cylinder locking) are effectively avoided.

In order to improve the circuit protection, the water temperature sensor further comprises an NPN triode, the negative electrode of the water temperature sensor is connected with the base electrode of the NPN triode, the negative electrode of a normally closed contact of the electromagnet relay is connected with the collector electrode of the NPN triode, and the emitter electrode of the NPN triode is grounded.

In order to make the temperature that the engine was sensed to water temperature sensor can be better, guarantee to improve water temperature sensor's life simultaneously, still include the water tank, water temperature sensor with install in the water tank, the water tank contacts with the engine.

In order to improve the controllability of the water temperature sensor, the water temperature sensor further comprises an automobile main controller, and the power supply anode of the water temperature sensor is connected with the output power supply anode of the automobile main controller.

In order to avoid the water temperature sensor from being broken down and damaged due to overload voltage, a resistor R1 is connected in series between the positive electrode of the power supply of the water temperature sensor and the positive electrode of the output power supply of the automobile main controller.

In order to improve the output voltage of the water temperature sensor and the voltage stability of the triode, the positive electrode of the power supply of the water temperature sensor is connected with the shell of the automobile main controller and then connected with the base electrode of the NPN triode, and the shell of the automobile main controller is insulated from other metal devices of an automobile.

Drawings

FIG. 1 is a schematic circuit connection diagram of the present invention;

in the figure: 1-a fuel pump; 2-an electromagnet relay; 3-water temperature sensor.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

As shown in figure 1, the engine oil cut-off device comprises a fuel pump 1, an electromagnet relay 2 and a water temperature sensor 3, wherein the positive electrode of a power supply of the fuel pump 1 is connected with the negative electrode of an electromagnetic terminal of the electromagnet relay 2, the negative electrode of the power supply of the fuel pump 1 is connected with the negative electrode of the power supply, the positive electrode of the electromagnetic terminal of the electromagnet relay 2 is connected with the positive electrode of the power supply, the positive electrode of the water temperature sensor 3 is connected with the negative electrode of a normally closed contact of the electromagnet relay 2, the positive electrode of the normally closed contact of the electromagnet relay 2 is connected with the positive electrode of the power.

In order to improve the circuit protection, the water temperature sensor further comprises an NPN triode, the negative electrode of the water temperature sensor 3 is connected with the base electrode of the NPN triode, and the negative electrode of the normally closed contact of the electromagnet relay 2 is connected with the collector electrode of the NPN triode.

In order to make the temperature of engine that can better sense by water temperature sensor 3, guarantee simultaneously to improve water temperature sensor 3's life, still include the water tank, water temperature sensor 3 with install in the water tank.

The controllability of the water temperature sensor 3 is improved, the automobile water temperature sensor further comprises an automobile main controller, and the power supply anode of the water temperature sensor 3 is connected with the output power supply anode of the automobile main controller.

In order to avoid the water temperature sensor 3 from being broken down and damaged due to overload voltage, a resistor R1 is connected in series between the positive electrode of the power supply of the water temperature sensor 3 and the positive electrode of the output power supply of the automobile main controller.

In order to improve the output voltage of the water temperature sensor 3 and the voltage stability of the NPN triode, the positive electrode of the power supply of the water temperature sensor 3 is connected with the shell of the automobile main controller and then connected with the base electrode of the NPN triode, and the shell of the automobile main controller is insulated from other metal devices of the automobile.

The working principle is as follows: when the temperature of an engine of an automobile is higher than a certain set temperature, a thermistor (NTC type) in a water temperature sensor 3 in a water tank is conducted, a base electrode of an NPN triode obtains a current signal, a collector electrode and an emitter electrode of the NPN triode are conducted rapidly, a main coil of an electromagnet relay 2 is electrified, a contact of the electromagnet relay 2 is in a normally closed state to a normally open state, and a fuel pump 1 stops supplying fuel to the engine, so that the problems caused by overhigh temperature of the engine (the engine is low in power, weak in acceleration, high in fuel consumption, abnormal combustion, deteriorated and coked lubricating oil, an oil film between moving parts is damaged, parts are severely abraded, and the temperature causes seizure of a large-end bearing and a small-end bearing of a crankshaft rod, piston ring breakage.