Method for carrying out correction compensation on fuel injection advance angle based on environmental parameters of electrically controlled diesel engine

Abstract

The invention provides a method for carrying out correction compensation on a fuel injection advance angle based on the environmental parameters of an electrically controlled diesel engine. By utilizing the rich software and hardware resources of a control unit of the modern electrically controlled diesel engine, data, such as water temperature, inlet gas temperature, fuel oil temperature and environmental parameters, such as atmospheric pressure, are collected through an original electric control system, simple and efficient correction calculation is carried out on the fuel injection basic advance angle, the control parameters of the advance angle are automatically optimized and adjusted, the diesel engine can automatically adjust fuel injection time according to environmental variation,and the dynamic performance of the diesel engine is enabled to still meet application requirements as much as possible under the condition of large environmental variation.

Description

technical field [0001] The invention belongs to the technical field of diesel engine electronic control, and in particular relates to a method for correcting and compensating the fuel injection advance angle based on the environmental parameters of the electronically controlled diesel engine. Background technique [0002] Among the many control parameters of the electronically controlled diesel engine, the injection advance angle of the diesel engine has a great influence on the oil-air mixing and combustion quality of the diesel engine, and is directly related to the power, economy and emission of the diesel engine. The modern electronically controlled diesel engine is a high-performance power machine integrating computer technology, modern sensor technology and advanced control technology. It can realize independent and flexible adjustment of the fuel injection advance angle, thereby improving the power performance of the diesel engine. It is a common method to optimize th...

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Problems solved by technology

[0003] However, as the requirements of diesel engine emission, performance, reliability and service life become more and more stringent, and the application environment is more and more extensive, the traditional control method based on the oil quantity and speed of the bench to calibrate the advance angle of the diesel engine can no longer meet the current high performance. The refined control of the diesel engine requires that the electronic control system of the diesel engine must comprehensively correct and compensate the fuel injection advance angle according to changes in different application environmental conditions such as ambient temperature, intake air temperature, fuel temperature, and altitude, so that the diesel engine can always automatically Obtain the optimal fuel injection advance angle control parameters, maintain a good combustion process of the diesel engine, and improve quality factors such as output performance, service life and reliability of the diesel engine

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