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Engine and control method and system for cooling jet of engine

A technology of engine cooling and control method, which is applied in the direction of engine cooling, coolant flow control, engine components, etc., and can solve problems such as excessive fuel injection, affecting engine thermal efficiency, and failure to spray.

Active Publication Date: 2014-05-14
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Obviously, the above two methods do not take into account the working conditions of the engine heat load, and cannot spray the actual required amount of oil according to the actual heat load borne by the piston. thermal efficiency

Method used

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  • Engine and control method and system for cooling jet of engine

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Embodiment Construction

[0037] The core of the present invention is to provide a control method for engine cooling nozzles, which can be used to cool the engine oil according to the current speed and power output when the engine is at a stable thermal efficiency, so as to avoid poor thermal efficiency of the engine caused by too much or too little cooling oil Phenomenon, to ensure the stability of the engine work. In addition, another core of the present invention is to provide a cooling nozzle control system and an engine including the system.

[0038] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] Please refer to figure 1 , figure 1 It is a flowchart of a specific embodiment of the method for controlling the engine cooling nozzle provided by the present invention.

[0040] In a specific...

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Abstract

The invention discloses a control method for a cooling jet of an engine. The control method for the cooling jet of the engine comprises the following steps that the rotating speed of the engine is divided to be within at least two preset rotating speed ranges, the power of the engine is divided to be within at least two preset power ranges, and the engine has different levels of stable heat efficiency when the rotating speed of the engine is within different preset rotating speed ranges and the power of the engine is within different preset power ranges; the current rotating speed and the current power of the engine are obtained; the preset rotating speed range corresponding to the current rotating speed is judged, the preset power range corresponding to the current power is judged, and the quantity of cooling machine oil needed by the engine is obtained when the engine has the stable heat efficiency within the corresponding preset rotating speed range and the corresponding preset power range; the quantity of the needed cooling machine oil is output. According to the control method for the cooling jet of the engine, distribution of the quantity of the cooling machine oil according to the needs is achieved, the phenomenon that when an engine is in idling and is low in load, the quantity of output cooling machine oil is large is avoided, and heat efficiency of the engine is ensured. The invention further discloses a control system for the cooling jet of the engine, and the engine with the control system.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a control method and a control system for the engine and its cooling nozzles. Background technique [0002] The cooling nozzle belongs to the cooling system of the engine, especially the engine with a high heat load is generally equipped with a cooling nozzle, which is usually fixed on the oil passage of the engine. During the operation of the engine, the cooling nozzle sprays cooling oil to the piston, and the temperature is relatively high. The low cooling oil takes away the heat of the piston through heat exchange and cools the piston. [0003] In the prior art, there are two control methods for engine cooling nozzles: [0004] The first one is to directly install the cooling nozzle on the auxiliary oil passage. During the entire operation of the engine, the cooling nozzle sprays cooling oil to the piston to cool the high-temperature piston. [0005] The second type is to in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P7/16F01P3/08
Inventor 李文广刘菲丁国栋
Owner WEICHAI POWER CO LTD
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