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Method, device and system for preventing false reporting of engine oil pressure during cold start

A technology of oil pressure and cold start, which is applied in the direction of pressure lubricating safety devices, etc., and can solve problems such as engine misreporting oil pressure and user troubles

Active Publication Date: 2021-08-20
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to at least solve the problem that when the ambient temperature of the existing engine is low, the engine falsely reports low engine oil pressure failure during the cold start process, causing troubles to the user

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  • Method, device and system for preventing false reporting of engine oil pressure during cold start
  • Method, device and system for preventing false reporting of engine oil pressure during cold start
  • Method, device and system for preventing false reporting of engine oil pressure during cold start

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Embodiment Construction

[0039] 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.

[0040] It should be understood that 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 fea...

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PUM

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Abstract

The invention belongs to the technical field of engines, and in particular relates to a method, device and system for preventing false reporting of engine oil pressure during cold start. The method for preventing false reporting of engine oil pressure during cold start of the present invention comprises the following steps: controlling the start of the fault detection unit according to the current temperature value of the ambient temperature being greater than the preset temperature value according to the engine running time value being greater than the fault non-detection time value; or , according to the current pressure value of the engine oil being greater than the preset pressure value, the fault detection unit is controlled to be turned on. In the method for preventing false report of engine oil pressure during cold start of the present invention, the fault detection unit is controlled to open according to the time value of the engine running time greater than the fault non-detection time value, and the current temperature value of the ambient temperature is greater than the preset temperature value, which can prevent the ambient temperature When it is too low, a false report of an oil pressure fault is caused, or according to the current pressure value of the oil being greater than the preset pressure value, the fault detection unit is controlled to open, which can prevent the oil pressure from being too low and cause a false report of an oil pressure fault.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to a method, device and system for preventing false reporting of engine oil pressure during cold start. Background technique [0002] During the starting process of the engine, the oil is quickly filled into the oil passage by the oil pump to lubricate each friction pair in time. After the engine starts successfully, the ECU controller detects the establishment of the oil pressure through the oil pressure sensor to judge the current state of the oil pressure. [0003] The limit allowable temperature of engine oil is -35°C. When the ambient temperature is -40°C, the low-temperature dynamic viscosity of the engine oil increases, the speed at which the engine oil enters the hole of the oil pressure sensor decreases, and the ability of the oil pressure sensor to sense the oil pressure decreases, resulting in cold start During the process, the engine falsely reported a low o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01M1/20F01M1/18
CPCF01M1/18F01M1/20
Inventor 司福帅王兴元张宏涛
Owner WEICHAI POWER CO LTD