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Engine cooling system, diesel engine and method for detecting whether cooling liquid is too high in temperature

A technology of engine cooling and coolant, which is applied in the direction of engine cooling, engine components, machines/engines, etc., and can solve problems such as poor accuracy

Active Publication Date: 2021-04-13
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to at least solve the problem that the diesel engine coolant overheating protection strategy in the prior art is affected by altitude and concentration, resulting in poor accuracy. This purpose is achieved through the following technical solutions:

Method used

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  • Engine cooling system, diesel engine and method for detecting whether cooling liquid is too high in temperature
  • Engine cooling system, diesel engine and method for detecting whether cooling liquid is too high in temperature

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Embodiment Construction

[0040] 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.

[0041] 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 diesel engines, and provides an engine cooling system. The system comprises a water pump, a water tank, an engine water jacket and an expansion water tank which are communicated through a pipeline, and further comprises a pressure sensor, a temperature sensor and an ECU which are assembled in the expansion water tank. The pressure sensor is used for collecting pressure signals in the expansion water tank, the temperature sensor is used for collecting temperature signals of cooling water of the engine cooling system, and the ECU is electrically connected with the pressure sensor and the temperature sensor. According to the engine cooling system, the pressure sensor is installed on the expansion water tank, whether the cooling liquid is boiled or not is comprehensively judged through the pressure, monitored by the pressure sensor, in the expansion water tank in combination with the cooling liquid temperature and the environment pressure, and then whether alarming or torque limiting is needed or not is judged, so that the problem that when the altitude is high or the concentration of the cooling liquid changes, whether the cooling liquid is boiled or not is judged only through the temperature, and judgment is inaccurate is solved.

Description

technical field [0001] The invention belongs to the technical field of diesel engines, and in particular relates to an engine cooling system. The invention also relates to a diesel engine and a method for detecting high coolant levels. Background technique [0002] This section provides background information related to the present disclosure only and is not necessarily prior art. [0003] When the coolant temperature of the diesel engine is too high to boil, a large number of air bubbles will be generated, and a part of the cooling water channel will be occupied by the air bubbles, which greatly reduces the heat exchange efficiency and causes the engine oil to fail to cool, which in turn will cause the cylinder head, piston and bearing bush of the diesel engine to be damaged. Some parts are overheated locally, and in severe cases, it will cause cylinder scuffing and tile melting. In order to protect the diesel engine, an overheating protection strategy based on coolant is...

Claims

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Application Information

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IPC IPC(8): F01P3/20F01P5/10F01P11/18F01P11/16F01P11/02F01P7/14
CPCF01P3/20F01P5/10F01P11/18F01P11/16F01P11/028F01P7/14
Inventor 王文豪王兴元尹东东张宏涛迟建伟
Owner WEICHAI POWER CO LTD
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