阅读说明：本技术 一种燃气发动机用氧传感器防水排气管装置及控制方法 (A kind of gas engine lambda sensor Water-proof exhausting pipe device and control method ) 是由 唐行辉 于 2019-09-26 设计创作，主要内容包括：本发明公开了一种燃气发动机用氧传感器防水排气管装置及控制方法,排气管装置包括排气管,排气管上设置有排气管接口,排气管内壁设有引流槽；排气管接口底端与排气管底部之间有空间,空间为液体收集腔,液体收集腔内设置有电动阀门和温度传感器,电动阀门和温度传感器分别与发动机电控单元电连接；发动机电控单元根据温度传感器采集的温度值控制电动阀门。当发动预设水温升至60℃时,采集并判断液体收集腔内温度,当温度小于等于100℃时,开启电动阀排水,液体收集腔内的温度升至200℃时,关闭电动阀门,在t段时间内温度持续为200℃以上时,给氧传感器供电。可见,本发明利用液体收集腔收集并及时排水,对氧传感器进行了保护。(The invention discloses a kind of gas engine lambda sensor Water-proof exhausting pipe device and control method, exhaust pipe device includes exhaust pipe, and exhaust port is provided on exhaust pipe, and exhaust inside pipe wall is equipped with drainage trough；There is space between exhaust port bottom end and exhaust bottom of the tube, space is liquid collecting chamber, is provided with electrically operated valve and temperature sensor in liquid collecting chamber, electrically operated valve and temperature sensor are electrically connected with engine electric-controlled unit respectively；Engine electric-controlled unit controls electrically operated valve according to the temperature value that temperature sensor acquires.When starting default water temperature to rise to 60 DEG C, acquires and judge that liquid collects cavity temperature, when temperature is less than or equal to 100 DEG C, it opens motor-driven valve draining and closes electrically operated valve when the temperature in liquid collecting chamber rises to 200 DEG C, when constant temperature is 200 DEG C or more within t times, power to lambda sensor.As it can be seen that the present invention is collected using liquid collecting chamber and drained in time, lambda sensor is protected.)

1. a kind of gas engine lambda sensor Water-proof exhausting pipe device, including exhaust pipe, on the exhaust pipe in be provided with Exhaust port, the exhaust pipe is interior to be arranged oxygen sensor, which is characterized in that the exhaust inside pipe wall is equipped with drainage trough；

There is space, which forms liquid collecting chamber, institute between the bottom end of the exhaust port and the exhaust bottom of the tube State and be provided with electrically operated valve and temperature sensor in liquid collecting chamber, the electrically operated valve and the temperature sensor respectively with hair The electrical connection of motivation electronic control unit；

The engine electric-controlled unit controls the electrically operated valve according to the temperature value that the temperature sensor acquires.

2. gas engine according to claim 1 lambda sensor Water-proof exhausting pipe device, which is characterized in that described to draw Chute is arranged along the exhaust pipe extending direction spiral.

3. gas engine according to claim 2 lambda sensor Water-proof exhausting pipe device, which is characterized in that described to draw The flow guiding structure that chute and the exhaust inside pipe wall surround has opening.

4. gas engine according to claim 1 lambda sensor Water-proof exhausting pipe device, which is characterized in that described to draw The outer wall of chute is arc-shaped wall.

5. gas engine according to any one of claims 1 to 4 lambda sensor Water-proof exhausting pipe device, feature exist In,

When the temperature of temperature sensor acquisition is greater than 200 DEG C, the engine electric-controlled unit closes the electrically operated valve；

When the temperature of temperature sensor acquisition is less than or equal to 100 DEG C, the engine electric-controlled unit is opened described electronic Valve draining.

6. gas engine according to claim 5 lambda sensor Water-proof exhausting pipe device, which is characterized in that when described The temperature of temperature sensor acquisition is greater than 200 DEG C, after the engine electric-controlled unit closes the electrically operated valve；

Within the t time, the engine electric-controlled unit persistently detects the temperature of the temperature sensor acquisition, when constant temperature is big When 200 DEG C, the control unit of engine controls the lambda sensor starting.

7. a kind of gas engine control method of lambda sensor Water-proof exhausting pipe device, which is characterized in that the exhaust pipe Device includes exhaust pipe, and the exhaust bottom of the tube has the liquid collecting chamber for collecting liquid, is provided in the liquid collecting chamber Temperature sensor and electrically operated valve；

The control method, comprising the following steps:

S1, the water temperature angle value for obtaining engine prewarming；

S2, judge whether water temperature angle value is more than or equal to 60 DEG C；

S3, if so, obtain temperature sensor acquisition temperature value；

S4, judge whether temperature value is less than or equal to 100 DEG C；

S5, it is drained if it is, controlling electrically operated valve and opening；

S6, judge whether temperature value is equal to 200 DEG C；

S7, if it is, closing electrically operated valve, and at least one t time, persistently judge whether temperature value is more than or equal to It 200 DEG C, until temperature value is greater than 200 DEG C, powers to lambda sensor, starts lambda sensor；

If temperature value is less than or equal to 100 DEG C within any t time, S5 is thened follow the steps to S7.

8. the gas engine according to claim 7 control method of lambda sensor Water-proof exhausting pipe device, feature It is, the t time is preset in the electronic control unit.

9. the gas engine according to claim 7 control method of lambda sensor Water-proof exhausting pipe device, feature It is, the drainage trough is one or several, and each drainage trough is arranged along the exhaust pipe extending direction spiral.

10. the gas engine according to claim 7 control method of lambda sensor Water-proof exhausting pipe device, feature It is, the outer wall of the drainage trough is arc-shaped wall.

Technical field

The present invention relates to gas engine technical field more particularly to a kind of gas engine lambda sensor Water-proof exhaustings Pipe device and control method.

Background technique

City bus, Gas Generator Set power generation have been widely used in by the engine of fuel of combustion gas such as natural gas, biogas Etc. all trades and professions.The main components such as natural gas, biogas be methane, gas engine be the chemical energy of methyl hydride combustion is converted to it is dynamic Can mechanism, methyl hydride combustion releases energy and generates a large amount of water and carbon dioxide engine at work.

The exhaust pipe of gas engine be generally cast iron resistant to high temperature or it is stainless steel welded form, exhaust pipe gas outlet It is connected to muffler and exhaust gas processing device.After gas engine starting, the tail gas of engine discharge carries a large amount of vapor, And the engine just started whithin a period of time exhaust pipe, silencer, exhaust gas treating device etc. also in cold conditions, the vapor of discharge Water droplet can be condensed on tube wall by encountering the colder exhaust pipe of engine, silencer, exhaust gas treating device etc., under gravity It slowly gathers and is flowed downwards along exhaust tube wall.It is generally equipped with lambda sensor on electric-controlled gas engine exhaust tube wall, is used to The air-fuel ratio of Real-time Feedback gaseous mixture, and lambda sensor measurement head has included ceramic body, it is ceramic when lambda sensor is powered on Temperature is up to 750 DEG C, if the water droplet flowed down through exhaust wall flows into lambda sensor, and contacts with refractory ceramics body, ceramics Body meets water meeting Quench rupture, causes the damage of lambda sensor to fail, seriously affects the normal operation of engine.It is especially northerly In winter, because of temperature cold, exhaust water inlet tube the phenomenon that leading to lambda sensor permanent damages, occurs often.

Currently in order to prevent the above-described problem from occurring, engine works' daily life of a family frequently with method be to lambda sensor dew point mark It is fixed, the problem is that not accounting for later period mating producer installs muffler, exhaust gas treating device or exhaust pipe installation direction additional Water droplet caused by randomness largely flows into the case where exhaust pipe.

Summary of the invention

In view of the above deficiencies, the technical problems to be solved by the present invention are: providing a kind of gas engine lambda sensor Water-proof exhausting pipe device and control method efficiently avoid the water droplet damage lambda sensor that exhaust is formed to the cold in exhaust pipe, Also have structure simple, the advantages of at low cost and easy realization.

In order to solve the above technical problems, the technical scheme is that

A kind of gas engine lambda sensor Water-proof exhausting pipe device, including exhaust pipe, interior setting on the exhaust pipe There is exhaust port, oxygen sensor is set in the exhaust pipe, the exhaust inside pipe wall is equipped with drainage trough；The exhaust pipe connects There is space, which forms liquid collecting chamber, set in the liquid collecting chamber between the bottom end and the exhaust bottom of the tube of mouth It is equipped with electrically operated valve and temperature sensor, the electrically operated valve and the temperature sensor are electrically connected with engine electric-controlled unit respectively It connects；The engine electric-controlled unit controls the electrically operated valve according to the temperature value that the temperature sensor acquires.

Preferred embodiment is that the drainage trough is arranged along the exhaust pipe extending direction spiral.

Preferred embodiment is that the flow guiding structure that the drainage trough and the exhaust inside pipe wall surround has opening.

Preferred embodiment is that the outer wall of the drainage trough is arc-shaped wall.

Preferred embodiment is that, when the temperature of temperature sensor acquisition is greater than 200 DEG C, the engine electric-controlled unit closes Close the electrically operated valve；When the temperature of temperature sensor acquisition is less than or equal to 100 DEG C, the engine electric-controlled unit is beaten Open the electrically operated valve draining.

Preferred embodiment is that, when the temperature of temperature sensor acquisition is greater than 200 DEG C, the engine electric-controlled unit is closed After the electrically operated valve；Within the t time, the engine electric-controlled unit persistently detects the temperature of the temperature sensor acquisition, When constant temperature is greater than 200 DEG C, the control unit of engine controls the lambda sensor starting.

A kind of control method of gas engine lambda sensor Water-proof exhausting pipe device, the exhaust pipe device include row Tracheae, the exhaust bottom of the tube have the liquid collecting chamber for collecting liquid, are provided with temperature sensor in the liquid collecting chamber And electrically operated valve；

The control method, comprising the following steps:

S1, the water temperature angle value for obtaining engine prewarming；

S2, judge whether water temperature angle value is more than or equal to 60 DEG C；

S3, if so, obtain temperature sensor acquisition temperature value；

S4, judge whether temperature value is less than or equal to 100 DEG C；

S5, it is drained if it is, controlling electrically operated valve and opening；

S6, judge whether temperature value is equal to 200 DEG C；

S7, if it is, closing electrically operated valve, and at least one t time, persistently judge whether temperature value is greater than In 200 DEG C, until temperature value is greater than 200 DEG C, powers to lambda sensor, start lambda sensor；

If temperature value is less than or equal to 100 DEG C within any t time, S5 is thened follow the steps to S7.

Preferred embodiment is that the t time is preset in the electronic control unit.

Preferred embodiment is that the drainage trough is one or several, and each drainage trough is along the exhaust pipe extension side It is arranged to spiral.

Preferred embodiment is that the outer wall of the drainage trough is arc-shaped wall.

After adopting the above technical scheme, the beneficial effects of the present invention are:

Due to gas engine of the invention lambda sensor Water-proof exhausting pipe device and control method, exhaust pipe device packet Exhaust pipe is included, interior on the exhaust pipe to be provided with exhaust stock interface, exhaust inside pipe wall is equipped with drainage trough；Exhaust port bottom end and row There is space, which is liquid collecting chamber, is provided with electrically operated valve and temperature sensing in liquid collecting chamber between tracheae bottom Device, electrically operated valve and temperature sensor are electrically connected with engine electric-controlled unit respectively；Engine electric-controlled unit is according to temperature sensing The temperature value of device acquisition controls electrically operated valve.This exhaust pipe device can be by exhaust pipe and muffler, exhaust gas treating device tube wall The liquid water that interior exhaust pre-cooling generates is drained into liquid collecting chamber using drainage trough.When starting default water temperature to rise to 60 DEG C, It acquires and judges the temperature value in liquid collecting chamber, when temperature is less than or equal to 100 DEG C, open motor-driven valve draining, liquid after draining When temperature in body collecting chamber rises to 200 DEG C, electrically operated valve is closed, and within t times, when constant temperature is 200 DEG C, oxygen supply Sensor power supply, starts lambda sensor.As it can be seen that the present invention using liquid collecting chamber collect and drain in time, to lambda sensor into It has gone and has been effectively protected.

Since drainage trough is arranged along exhaust pipe extending direction spiral；So as to by exhaust pipe and muffler, exhaust gas treating device The liquid water that exhaust pre-cooling generates in tube wall is drained to exhaust bottom of the tube.

Since the flow guiding structure that drainage trough and exhaust inside pipe wall surround has opening；This open preferably collection liquid water.

Since the outer wall of drainage trough is arc-shaped wall；Greatly reduce upward exhaust resistance.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of gas engine lambda sensor Water-proof exhausting pipe device of the present invention；

Fig. 2 is to be vented tube wall in the present invention and drain the schematic diagram of slot cross-section；

Fig. 3 is the flow chart of gas engine lambda sensor water-proof exhaust pipe apparatus control method of the present invention；

In figure: 1- exhaust pipe, 2- drainage trough, 3- liquid collecting chamber, 4- temperature sensor, 5- electrically operated valve, 6- engine Electronic control unit, 7- exhaust port, 8- lambda sensor, 9- muffler and exhaust gas treating device.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.