CN210370921U - Electric EGR system of coal mine car - Google Patents
Electric EGR system of coal mine car Download PDFInfo
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- CN210370921U CN210370921U CN201921496359.7U CN201921496359U CN210370921U CN 210370921 U CN210370921 U CN 210370921U CN 201921496359 U CN201921496359 U CN 201921496359U CN 210370921 U CN210370921 U CN 210370921U
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Abstract
The utility model discloses a coal mine car electric EGR system, which comprises a detection unit, a controller, an electric EGR valve and an indication unit, wherein the output end of the detection unit is connected with the input end of the controller, and the output end of the controller is respectively connected with the input ends of the electric EGR valve and the indication unit; the detection unit comprises a rotating speed sensor, an accelerator sensor and a water temperature sensor, and the output ends of the rotating speed sensor, the accelerator sensor and the water temperature sensor are respectively connected with the input end of the controller; a position sensor is arranged in the electric EGR valve, and the output end of the position sensor is connected with the input end of the controller; the indicating unit comprises a power supply indicating lamp, an EGR valve fault indicating lamp and a water temperature abnormity indicating lamp, and the input ends of the power supply indicating lamp, the EGR valve fault indicating lamp and the water temperature abnormity indicating lamp are respectively connected with the output end of the controller. The utility model discloses a detect engine running state, confirm the aperture size of electronic EGR valve, reduced the emission of coal mine car pollutant.
Description
Technical Field
The utility model relates to an electronic EGR valve technical field, especially an electronic EGR system of coal mine car.
Background
The electric EGR valve has the main function of shunting part of gas exhausted by the engine to the air inlet of the engine to reduce the temperature and oxygen content in a combustion chamber of the engine so as to reduce pollutants NOXThe amount of discharge of (c).
Along with the rapid development of economy, the environmental pollution is increasingly serious, the national requirements on the tail gas emission of the coal mine car are increasingly strict, an electric EGR system specially applied to the coal mine car is still blank at present, and in order to match the increasingly strict requirements of the tail gas emission regulations of the coal mine car, a set of EGR system suitable for being used on the coal mine car needs to be designed.
Disclosure of Invention
The utility model aims to solve the technical problem that an electronic EGR system of coal mine car is provided, can detect out the operating condition of coal mine car engine system, confirm electronic EGR's aperture size, reduce the emission of coal mine car pollutant.
In order to solve the technical problem, the utility model adopts the following technical proposal.
The electric EGR system of the coal mine car comprises a detection unit for detecting the running state of an engine of the coal mine car, a controller for processing detection signals of the detection unit, an electric EGR valve for executing instructions of the controller and an indication unit for indicating the running state of the engine, wherein the output end of the detection unit is connected with the input end of the controller, and the output end of the controller is respectively connected with the input ends of the electric EGR valve and the indication unit; the detection unit comprises a rotating speed sensor, an accelerator sensor and a water temperature sensor, wherein the rotating speed sensor is arranged on the engine rotating machine and used for detecting the rotating speed of the coal mine car engine, the accelerator sensor is arranged at the outlet of an engine oil tank and used for detecting the oil injection quantity of the coal mine car engine, the water temperature sensor is arranged in an engine cooling water tank and used for detecting the temperature of the cooling liquid of the coal mine car engine, and the output ends of the rotating speed sensor, the accelerator sensor and the water temperature sensor are respectively connected; the electric EGR valve is internally provided with a position sensor for detecting the opening of the EGR valve, and the output end of the position sensor is connected with the input end of the controller; the indicating unit comprises a power supply indicating lamp for indicating normal work of the engine, an EGR valve fault indicating lamp for indicating abnormal work of the EGR valve and a water temperature abnormal indicating lamp for indicating standard exceeding of the water temperature of cooling water of the engine, wherein the input ends of the power supply indicating lamp, the EGR valve fault indicating lamp and the water temperature abnormal indicating lamp are respectively connected with the output end of the controller.
The electric EGR system of the coal mine car further comprises a differential pressure sensor used for detecting differential pressure at two ends of the DPF and a differential pressure abnormity indicating lamp used for indicating overlarge differential pressure at two ends of the DPF, the output end of the differential pressure sensor is connected with the input end of the controller, and the output end of the controller is connected with the input end of the differential pressure abnormity indicating lamp.
The electric EGR system for the coal mine car further comprises a surface temperature sensor arranged on the surface of the engine and used for detecting the surface temperature of the engine of the coal mine car and a surface temperature abnormal indicating lamp used for indicating the surface temperature of the engine to exceed the standard, the output end of the surface temperature sensor is connected with the input end of the controller, and the output end of the controller is connected with the input end of the surface temperature abnormal indicating lamp.
The electric EGR system for the coal mine car further comprises a temperature exhaust sensor arranged on an exhaust pipe of the engine and used for detecting the exhaust temperature of the engine of the coal mine car and a temperature exhaust abnormal indicating lamp used for indicating that the exhaust temperature of the engine exceeds the standard, the output end of the temperature exhaust sensor is connected with the input end of the controller, and the output end of the controller is connected with the input end of the temperature exhaust abnormal indicating lamp.
The electric EGR system of the coal mine car further comprises a communication diagnosis interface used for communicating with external monitoring equipment, and a communication end of the communication diagnosis interface is connected with a communication end of the controller.
Due to the adoption of the technical scheme, the utility model has the following technical progress.
The utility model discloses a working condition, engine temperature, engine table temperature, the engine row temperature to electronic EGR valve operating condition, coal mine car aftertreatment DPF monitor, confirm the aperture size of electronic EGR valve, have reduced the emission of coal mine car pollutant, and when system work is unusual, the system reminds through this pilot lamp that the driver carries out relevant processing for the coal mine car satisfies the borehole operation requirement.
Drawings
Fig. 1 is a block diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A structural block diagram of the electric EGR system of the coal mine car is shown in figure 1, and the electric EGR system comprises a detection unit, a controller, an electric EGR valve, an indicating unit and a communication diagnosis interface. The detection unit is used for detecting the running state of the coal mine car engine, the controller is used for processing signals detected by the detection unit, the electric EGR valve is used for executing control commands sent by the controller, the indication unit is used for indicating the running state of the coal mine car engine, and the communication diagnosis interface is used for communicating with external monitoring equipment. The output end of the detection unit is connected with the input end of the controller, the output end of the controller is respectively connected with the input ends of the electric EGR valve and the indication unit, and the communication end of the communication diagnosis interface is connected with the communication end of the controller.
The detection unit comprises an accelerator sensor, a rotating speed sensor, a water temperature sensor, a surface temperature sensor and a heat discharge sensor. The accelerator sensor is arranged at the outlet of the oil tank of the engine and used for detecting the oil injection quantity of the engine of the coal mine car; the rotating speed sensor is arranged on the engine rotating machine and used for detecting the rotating speed of the engine of the coal mine car in real time; the water temperature sensor is arranged in the engine cooling water tank and used for detecting the temperature of the cooling liquid of the coal mine car engine; the surface temperature sensor is arranged on the surface of the engine and used for detecting the surface temperature of the engine of the coal mine car; the exhaust temperature sensor is arranged on an exhaust pipe of the engine and used for detecting the exhaust temperature of the engine of the coal mine car. The output ends of the throttle sensor, the rotating speed sensor, the water temperature sensor, the surface temperature sensor and the exhaust temperature sensor are respectively connected with the input end of the controller.
The electric EGR valve is used for controlling the amount of exhaust gas reentering the air inlet end, a position sensor is arranged in the electric EGR valve and used for detecting the opening degree of the EGR valve, and the output end of the position sensor is connected with the input end of the controller. The controller collects the numerical values of different sensors of the coal mine car engine system so as to accurately control the opening of the EGR valve, and simultaneously, various temperature signals of the engine are detected in real time, so that the water temperature, the surface temperature and the exhaust temperature of the engine cannot exceed the safety standard requirements of underground operation vehicles.
The indicating unit comprises an EGR valve fault indicating lamp, a water temperature abnormity indicating lamp, a surface temperature abnormity indicating lamp, a temperature exhaust abnormity indicating lamp and a power supply indicating lamp. The EGR valve fault indicator lamp is used for indicating that the EGR works abnormally only, the water temperature abnormal indicator lamp is used for indicating that the water temperature of cooling water of an engine exceeds the standard, the surface temperature abnormal indicator lamp is used for indicating that the surface temperature of the engine exceeds the standard, the exhaust temperature abnormal indicator lamp is used for indicating that the exhaust temperature of the engine exceeds the standard, and the power indicator lamp is used for indicating that the engine works normally. The input ends of the EGR valve fault indicator lamp, the water temperature abnormity indicator lamp, the surface temperature abnormity indicator lamp, the exhaust temperature abnormity indicator lamp and the power supply indicator lamp are respectively connected with the output end of the controller. In order to ensure that the EGR system can reliably work under the safe condition, the water temperature, the surface temperature and the exhaust temperature of the EGR system and the coal mine car need to be monitored, and the related modules can light up the indicating lamps to remind a driver of carrying out related operation troubleshooting when abnormal systems appear.
In order to better meet the emission requirement, the coal mine car is generally additionally provided with a DPF (particulate matter trap), so that a differential pressure sensor and a differential pressure abnormity indicator lamp are further arranged in the electric EGR system of the coal mine car, the differential pressure sensor is used for detecting the differential pressure at two ends of the DPF, the differential pressure abnormity indicator lamp is used for indicating that the differential pressure at two ends of the DPF is overlarge, the output end of the differential pressure sensor is connected with the input end of a controller, and the output end of the controller is connected with the differential pressure abnormity indicator lamp. Differential pressure sensor monitors the pressure difference at the two ends of the DPF, and if the DPF blocks up to a certain degree, the abnormal pressure difference indicating lamp can be lightened, and the DPF of the coal mine car cannot be automatically regenerated because the coal mine car does not allow the troubleshooting to exceed 68 ℃, so that a driver is required to manually clean the DPF at the moment.
Through the communication diagnosis interface in the electric EGR system of the coal mine car, technicians can monitor the running information of the system in real time, such as the real-time change conditions of the rotating speed, the accelerator and the water temperature, the real-time change of the opening degree, the current and the duty ratio of the EGR valve, the opening and closing time of the valve and other related conditions, or can finely adjust some calibration data according to different vehicles, and the interface is generally used in the initial calibration.
The utility model discloses well coal mine car storage battery is for electronic EGR system power supply back, and power indicator lights, and the electronic EGR valve of controller control starts, confirms the benchmark of EGR valve aperture, prevents because the aperture error that carbon deposit scheduling problem caused. After the system is determined to be abnormal, the engine is started, the coal mine car works, the controller determines the EGR opening degree by collecting signals of the rotating speed, the accelerator and the water temperature, in addition, the position of the EGR valve is detected through a position sensor in the EGR valve, and the controller judges whether the opening degree of the EGR valve reaches the target position or not according to the detected position.
Claims (5)
1. The utility model provides a coal mine car electronic EGR system which characterized in that: the system comprises a detection unit for detecting the running state of the engine of the coal mine car, a controller for processing detection signals of the detection unit, an electric EGR valve for executing instructions of the controller and an indication unit for indicating the running state of the engine, wherein the output end of the detection unit is connected with the input end of the controller, and the output end of the controller is respectively connected with the input ends of the electric EGR valve and the indication unit; the detection unit comprises a rotating speed sensor, an accelerator sensor and a water temperature sensor, wherein the rotating speed sensor is arranged on the engine rotating machine and used for detecting the rotating speed of the coal mine car engine, the accelerator sensor is arranged at the outlet of an engine oil tank and used for detecting the oil injection quantity of the coal mine car engine, the water temperature sensor is arranged in an engine cooling water tank and used for detecting the temperature of the cooling liquid of the coal mine car engine, and the output ends of the rotating speed sensor, the accelerator sensor and the water temperature sensor are respectively connected; the electric EGR valve is internally provided with a position sensor for detecting the opening of the EGR valve, and the output end of the position sensor is connected with the input end of the controller; the indicating unit comprises a power supply indicating lamp for indicating normal work of the engine, an EGR valve fault indicating lamp for indicating abnormal work of the EGR valve and a water temperature abnormal indicating lamp for indicating standard exceeding of the water temperature of cooling water of the engine, wherein the input ends of the power supply indicating lamp, the EGR valve fault indicating lamp and the water temperature abnormal indicating lamp are respectively connected with the output end of the controller.
2. The electric EGR system of the coal mine car according to claim 1, wherein: the system also comprises a differential pressure sensor for detecting the differential pressure at the two ends of the DPF and a differential pressure abnormity indicator lamp for indicating the overlarge differential pressure at the two ends of the DPF, wherein the output end of the differential pressure sensor is connected with the input end of the controller, and the output end of the controller is connected with the input end of the differential pressure abnormity indicator lamp.
3. The electric EGR system of the coal mine car according to claim 1, wherein: the system also comprises a surface temperature sensor arranged on the surface of the engine and used for detecting the surface temperature of the coal mine car engine and a surface temperature abnormity indicator lamp used for indicating the surface temperature of the engine to exceed the standard, wherein the output end of the surface temperature sensor is connected with the input end of the controller, and the output end of the controller is connected with the input end of the surface temperature abnormity indicator lamp.
4. The electric EGR system of the coal mine car according to claim 1, wherein: the system also comprises a temperature exhaust sensor arranged on an exhaust pipe of the engine and used for detecting the exhaust temperature of the coal mine car engine and an abnormal temperature exhaust indicator lamp used for indicating that the exhaust temperature of the engine exceeds the standard, wherein the output end of the temperature exhaust sensor is connected with the input end of the controller, and the output end of the controller is connected with the input end of the abnormal temperature exhaust indicator lamp.
5. The electric EGR system of the coal mine car according to claim 1, wherein: the system also comprises a communication diagnosis interface used for communicating with external monitoring equipment, and a communication end of the communication diagnosis interface is connected with a communication end of the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921496359.7U CN210370921U (en) | 2019-09-10 | 2019-09-10 | Electric EGR system of coal mine car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921496359.7U CN210370921U (en) | 2019-09-10 | 2019-09-10 | Electric EGR system of coal mine car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210370921U true CN210370921U (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921496359.7U Active CN210370921U (en) | 2019-09-10 | 2019-09-10 | Electric EGR system of coal mine car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210370921U (en) |
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2019
- 2019-09-10 CN CN201921496359.7U patent/CN210370921U/en active Active
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