Protection control method and device for urea nozzle, electronic equipment and vehicle

A urea nozzle, protection and control technology, applied in the control of coolant flow, mechanical equipment, exhaust devices, etc., can solve the problems of urea nozzle burning failure, insufficient cooling of urea nozzle, thermal decomposition of urea molecules, etc., to achieve enhanced cooling effect of effect

Active Publication Date: 2022-06-21
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the external environment temperature is high, the speed of the electronic water pump under normal temperature conditions is not enough to cool the urea nozzle, which will easily lead to the burning of the urea nozzle in the high temperature environment. Melting failure and thermal decomposition of urea molecules

Method used

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  • Protection control method and device for urea nozzle, electronic equipment and vehicle
  • Protection control method and device for urea nozzle, electronic equipment and vehicle
  • Protection control method and device for urea nozzle, electronic equipment and vehicle

Examples

Experimental program
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Embodiment 1

[0045] refer to figure 1 , showing a method for protecting and controlling the urea nozzle in the first embodiment of the present invention, which can be applied to the engine controller ECU in the target vehicle, and the method includes:

[0046] Step 101 : obtaining information about the environment where the current vehicle is located and information about the working condition of the current vehicle;

[0047] In this step, the environmental information includes the ambient temperature, the current operating condition information includes the exhaust gas temperature and the engine water temperature, and a temperature sensor can be used to obtain the environmental information of the current vehicle and the operating condition information of the current vehicle operation, wherein the ambient temperature refers to the natural Ambient temperature, the temperature sensor for collecting the ambient temperature can be set on the body of the vehicle, the temperature sensor for coll...

Embodiment 2

[0058] refer to figure 2 , shows a protection control method for the urea nozzle in the second embodiment of the present invention, the method can be applied to the engine controller ECU in the target vehicle, and the method includes:

[0059] Step 201: judging the working state of the electronic water pump;

[0060] Specifically, the working state of the electronic water pump specifically includes a normal state, a stopped state and a fault state;

[0061] Step 202: when the working state of the electronic water pump is in a normal state, start collecting the environmental information of the current vehicle and the working condition information of the current vehicle operation;

[0062] Specifically, when the electronic water pump is in a normal state, the rotational speed of the electronic water pump will be corrected; when the electronic water pump is in a stopped state or in a fault state, the rotational speed of the electronic water pump will not be corrected.

[0063]...

Embodiment 3

[0086] Based on the same inventive concept, another embodiment of the present application provides a protection control device for a urea nozzle, such as Image 6 As shown, the protection control device for the urea nozzle may specifically include the following modules:

[0087] The acquisition module is used to acquire the environmental information of the current vehicle and the working condition information of the current vehicle operation;

[0088] The correction coefficient determination module is used to determine the corresponding environmental correction coefficient according to the current environment information of the vehicle;

[0089] The basic speed determination module is used to determine the basic speed of the electronic water pump under the current working condition according to the working condition information of the current vehicle operation;

[0090] The rotational speed adjustment module is used to adjust the rotational speed of the electronic water pump ...

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Abstract

The invention provides a protection control method and device for a urea nozzle, electronic equipment and a vehicle, and belongs to the field of automobile exhaust emission. The method comprises the steps that information of the environment where a current vehicle is located and information of the working condition of the current vehicle are obtained; according to the information of the environment where the current vehicle is located, a corresponding environment correction coefficient is determined; according to the current working condition information of the vehicle, the basic rotating speed of the electronic water pump under the current working condition is determined; and according to the environment correction coefficient and the basic rotating speed of the electronic water pump under the current working condition, the rotating speed of the electronic water pump used for conducting circulating water cooling on the urea nozzle is adjusted. By means of the protection control method and device for the urea nozzle, the electronic equipment and the vehicle, the cooling effect of the electronic water pump in the high-temperature environment can be enhanced.

Description

technical field [0001] The embodiments of the present application relate to the field of vehicle exhaust emissions, and in particular, to a method, device, electronic device, and vehicle for protection and control of a urea nozzle. Background technique [0002] Diesel exhaust pollutants are mainly NOx and PM. In order to reduce the pollution emissions of NOx and PM, exhaust after-treatment technology must be used to control the emissions of NOx and PM. Generally, Selective Catalytic Reduction (SCR) technology is used to reduce the emission of NOx and PM. NOx emission, the SCR system includes a urea nozzle for spraying urea. In actual use, since the nozzle is installed in the exhaust pipe, the exhaust temperature is relatively high, about 100-650 °C, and the maximum temperature resistance of the urea nozzle is If it exceeds the maximum temperature resistance range of urea sprinkler irrigation, the valve core and pipeline inside the urea nozzle will be thermally melted, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P7/16F01P3/12F01N3/20
CPCF01P7/164F01P7/167F01P3/12F01N3/2066Y02T10/12Y02A50/20
Inventor 刘世龙
Owner GREAT WALL MOTOR CO LTD
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