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EGR cooler detection system and detection method thereof

A technology of EGR cooler and detection method, which is applied in the direction of machine/structural component testing, instruments, measuring devices, etc., and can solve problems such as EGR leakage and engine normal operation

Pending Publication Date: 2022-05-06
WEICHAI POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the invention is to at least solve the problem that the existing EGR leakage affects the normal operation of the engine

Method used

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  • EGR cooler detection system and detection method thereof
  • EGR cooler detection system and detection method thereof
  • EGR cooler detection system and detection method thereof

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Embodiment Construction

[0042] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0043] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated...

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Abstract

The invention belongs to the technical field of EGR coolers, and particularly relates to an EGR cooler detection system and a detection method thereof. The EGR cooler detection method comprises the steps that the air inlet pressure of an EGR cooler is obtained; according to the fact that the air inlet pressure is larger than a first pressure threshold value, EGR cooler leakage is judged; the first pressure threshold value is an air inlet pressure value when cooling liquid leaked from the EGR cooler occupies half of the volume of the EGR cooler. According to the EGR cooler detection method, the air inlet pressure of the EGR cooler is firstly obtained, the obtained air inlet pressure is compared with the first pressure threshold value, and when the air inlet pressure is larger than the first pressure threshold value, it is indicated that the air inlet pressure of the air inlet end of the EGR cooler is abnormal, and when cooling liquid in the EGR cooler leaks, the air inlet resistance in the cooler is increased, and the air inlet pressure of the air inlet end of the EGR cooler is abnormal. And therefore, the leakage of the EGR cooler is judged.

Description

technical field [0001] The invention belongs to the technical field of EGR coolers, and in particular relates to an EGR cooler detection system and a detection method thereof. Background technique [0002] EGR (Exhaust Gas Re-circulation) returns part of the exhaust gas from the engine to the intake pipe, mixes it with fresh air and sends it into the engine cylinder. The existing EGR will have the problem of internal leakage of the EGR cooler, which will cause the coolant to enter the EGR pipeline, but the leakage of the EGR coolant is difficult to find during the intake and exhaust process, which will cause the coolant to enter the cylinder The internal causes problems such as damage to the connecting rod or damage to the piston head, making it difficult for the engine to run normally. Contents of the invention [0003] The purpose of the present invention is to at least solve the problem that the existing EGR leakage affects the normal operation of the engine. This pur...

Claims

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Application Information

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IPC IPC(8): G01M3/28
CPCG01M3/2815
Inventor 郎俊宇耿磊袁志玲贾德民
Owner WEICHAI POWER CO LTD