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Engine control method, engine control device and vehicle

A control method and control device technology, applied to engine components, combustion engines, machines/engines, etc., can solve problems affecting user experience, sulfur poisoning, and excessive emissions

Active Publication Date: 2021-12-07
HUNAN DEUTZ POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country has high standards for nitrogen and oxygen emissions in engine exhaust, so it has high requirements for diesel, but there are many diesels that do not meet the requirements on the market. If poor quality diesel is used, there will be sulfur poisoning, excessive emissions, etc. problems, thereby affecting the user experience

Method used

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  • Engine control method, engine control device and vehicle
  • Engine control method, engine control device and vehicle
  • Engine control method, engine control device and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as figure 1 As shown, according to the first aspect of the present invention, a method for controlling an engine is proposed, and the engine includes a heating device, an injection device and a catalytic conversion device. Specific engine control methods include:

[0052] Step 102, obtaining the efficiency value of the catalytic conversion device;

[0053] Step 104, according to the efficiency value of the catalytic conversion device, control the working states of the heating device, the injection device and the catalytic conversion device.

[0054] In the engine control method provided by the embodiment of the present invention, the engine includes a heating device, an injection device and a catalytic conversion device, wherein the heating device is used to heat the inlet of the catalytic conversion device, and the injection device is used to inject urea. The detection can characterize whether there is sulfur poisoning in the aftertreatment of the engine. It is ...

Embodiment 2

[0063] Such as figure 2 As shown, according to an embodiment of the present invention, an engine control method is proposed, the method includes:

[0064] Step 202, judging whether the efficiency value of the catalytic conversion device is greater than the first threshold; if so, go to step 204, otherwise go to step 206;

[0065] Step 204, repeatedly detecting the efficiency value of the catalytic conversion device;

[0066] Step 206, controlling the injection device to stop spraying urea;

[0067] Step 208, when the efficiency value of the catalytic conversion device is greater than the second threshold, control the catalytic conversion device to shut down, and control the injection device to reduce the injection of urea.

[0068] In this embodiment, when the efficiency value of the catalytic conversion device is less than the first threshold value, it indicates that the efficiency value of the catalytic conversion device is low at this time, the injection device is contro...

Embodiment 3

[0071] On the basis of the above-mentioned embodiment two, further, as image 3 As shown, the engine control method further includes:

[0072] Step 302, judging whether the efficiency value of the catalytic conversion device is greater than the first threshold; if yes, then go to step 304; otherwise, go to step 306;

[0073] Step 304, repeatedly obtaining the efficiency value of the catalytic conversion device;

[0074] Step 306, controlling the spraying device to stop spraying urea;

[0075] Step 308, judging whether the efficiency value of the catalytic conversion device is greater than the second threshold; if so, go to step 310, if not, then go to step 312;

[0076] Step 310, controlling the catalytic conversion device to close, and controlling the injection device to reduce the injection of urea;

[0077] Step 312, controlling the heating device to heat the inlet of the catalytic conversion device to a first preset temperature, and controlling the injection device to i...

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Abstract

The invention provides an engine control method, an engine control device and a vehicle. An engine comprises a heating device, an injection device and a catalytic conversion device. The engine control method comprises the following steps: acquiring efficiency values of the catalytic conversion device; and according to the efficiency values of the catalytic conversion device, controlling the working states of the heating device, the injection device and the catalytic conversion device. The working states of the heating device, the injection device and the catalytic conversion device are controlled through the different efficiency values, and the working state of the catalytic conversion device can be detected at different temperatures, so that whether a sulfur poisoning condition exists in the engine or not is determined, and the poisoning degree in the engine is recognized.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to an engine control method, an engine control device and a vehicle. Background technique [0002] my country has high standards for nitrogen and oxygen emissions in engine exhaust, so it has high requirements for diesel, but there are many diesels that do not meet the requirements on the market. If poor quality diesel is used, there will be sulfur poisoning, excessive emissions, etc. problems, thereby affecting the user experience. Contents of the invention [0003] The present invention aims to solve one of the technical problems existing in the prior art or related art. [0004] For this reason, the first aspect of the present invention proposes a kind of engine control method, and engine comprises heating device, injection device and catalytic conversion device, and engine control method comprises: obtaining the efficiency value of catalytic conversion device; Acco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N9/00F01N3/20F01N11/00
CPCF01N9/00F01N3/2006F01N3/208F01N11/00Y02A50/20Y02T10/40
Inventor 郭云杰缪丰隆
Owner HUNAN DEUTZ POWER CO LTD