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Method for improving braking power of engine

An engine braking and engine technology, applied in the direction of engine control, engine components, machines/engines, etc., can solve the problems of inability to meet driving safety requirements and limited effect, and achieve good braking effect and improve braking power.

Inactive Publication Date: 2019-05-10
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of traditional braking is limited and cannot meet the strict driving safety requirements

Method used

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  • Method for improving braking power of engine
  • Method for improving braking power of engine

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Embodiment Construction

[0019] The core of this specific embodiment is to provide a method for increasing the braking power of the engine, which can increase the braking power of the engine and solve the current problems in this field.

[0020] Hereinafter, an embodiment will be described with reference to the drawings. In addition, the examples shown below do not limit the content of the invention described in the claims in any way. In addition, all the contents of the configurations shown in the following embodiments are not limited to be essential to the solution of the invention described in the claims.

[0021] The method for increasing the braking power of the engine provided in this specific embodiment enables the ECU to control the fuel injection unit to inject fuel to realize combustion braking. That is, under the engine braking condition, the ECU controls the fuel injection unit to supply a certain amount of fuel to participate in the combustion, so that the generated high-temperature and ...

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Abstract

The invention discloses a method for improving braking power of an engine. According to the method, an ECU controls a fuel injection unit to inject fuel to achieve combustion braking. Specifically, under an engine braking condition, the ECU controls the fuel injection unit to supply a certain amount of fuel to participate in the combustion, so that the generated high-temperature and high-pressuregas performs negative work on an ascending piston, then the upward resistance of the ascending piston is greater than the resistance generated by pure compressed air, and then a good braking effect isachieved. By means of the method for improving the braking power of the engine, the braking power of the engine is increased and the problem in the field at the present stage is solved.

Description

technical field [0001] The invention relates to the field of engine braking, and more specifically, relates to a method for increasing engine braking power. Background technique [0002] With the development of technology and the improvement of road conditions, the driving speed of the car is getting higher and higher, the engine power is getting bigger and bigger, and the load and quality of the car are also increasing; at the same time, the driving resistance and friction loss of the vehicle are getting higher and higher. Smaller and smaller, and driving safety requirements and regulations are more stringent, therefore, the braking power of the engine is forced to further increase. [0003] As far as the existing technology is concerned, the traditional engine adopts compression release brake, that is, the engine cuts off the oil after the brake is opened, and the exhaust valve is opened near the top dead center of the compression stroke and the bottom dead center of the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/04F02D41/30F01L13/06
Inventor 孟丽陈琳张晓张鹏伟
Owner WEICHAI POWER CO LTD