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Exhaust brake control method based on multi-parameter electronic control diesel engine

A diesel engine and engine controller technology, applied in engine control, combustion engine, machine/engine, etc., can solve problems such as poor braking effect, reduce the number of maintenance and replacement of brake pads, improve energy utilization, The effect of improving reliability and driving safety

Active Publication Date: 2021-02-02
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing vehicle braking method has poor braking effect when the vehicle is driving on a high-speed or steep road section, the present invention provides a control method based on multi-parameter electronically controlled diesel engine exhaust braking

Method used

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  • Exhaust brake control method based on multi-parameter electronic control diesel engine
  • Exhaust brake control method based on multi-parameter electronic control diesel engine
  • Exhaust brake control method based on multi-parameter electronic control diesel engine

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Embodiment Construction

[0045] Such as figure 1 As shown, the present invention provides a method for controlling the exhaust braking of a diesel engine based on multi-parameter electronic control, and the specific process is as follows:

[0046] Step 1: Set the parameter values ​​of the engine controller

[0047] The parameter values ​​of the engine controller include the engine coolant temperature threshold C coolant , the value range is generally set to (-10 ~ 10) ℃; under normal temperature conditions, the engine braking minimum speed threshold C max , the value range is generally set to (900 ~ 1000) r / min; the engine braking minimum speed threshold C in the cold state maxcool , the value range is generally set to (1000-1200) r / min; the maximum intake pressure threshold C for the engine to enter the exhaust brake P, the value range is generally set to 400Kpa ~ 500Kpa; the engine brake enters the exhaust brake speed threshold T min ;

[0048] Step 2: Read engine and vehicle parameter informat...

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Abstract

The invention discloses an exhaust brake control method based on a multi-parameter electronic control diesel engine. The exhaust brake control method realizes accurate control of the exhaust brake output state of the engine, and improves the brake effect and the brake reliability, thereby improving the driving safety. The method mainly comprises the following steps of 1, setting parameter values of an engine controller; 2, reading parameter information of an engine and a whole vehicle; 3, carrying out delay processing on a brake switch state signal; 4, judging whether a general exit state of an engine exhaust brake is effective or not; 5, judging whether the exhaust braking state of the engine in the previous period is effective or not; 6, judging whether a general entering state of the engine exhaust brake is effective or not; 7, judging whether an exhaust brake interface entering condition is effective or not; and 8, judging whether an engine exhaust brake interface exit condition iseffective or not.

Description

technical field [0001] The invention belongs to the field of electronically controlled diesel engine power control, in particular to an electronically controlled diesel engine exhaust brake control method, which utilizes the engine exhaust brake to perform an auxiliary brake on a traveling vehicle. Background technique [0002] With the development of our country's economy and the continuous improvement of the road network, the road transportation has developed vigorously, but the traffic accidents that follow continue to appear. Use the service brakes to slow down to keep your vehicle speed within a safe range. [0003] Frequent use of service brakes will lead to a sharp rise in the temperature of the brake hub, a decrease in braking capacity, and even brake failure in severe cases. Traditional engine braking control uses stop engine fuel injection to increase engine braking effect. However, due to the low braking power of the engine itself, the braking effect is not good...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D9/06
CPCF02D9/06Y02T10/40
Inventor 于正同时培燕冯健朋毛宁周宇晨王雅荟
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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