A Sensitivity Analysis Method of Electronically Controlled Diesel Engine Parameters

Abstract

The invention relates to a parameter sensitivity analysis method of an electronically controlled diesel engine. The method includes: calculating the key working condition points in the operating condition area of ​​the electronically controlled diesel engine through PreDoE; The key working point specifies the parameter combination in the parameter combination scheme, and collects data for each parameter combination in combination with the bench test, analyzes the sensitivity of each parameter according to the collected data, and reserves the sensitive parameters until the next stage of development In the scheme, non-sensitive parameters can be directly eliminated. The method of the invention is applicable to parameter sensitivity analysis of various electronically controlled diesel engines, and a parameter combination scheme is drawn up before engine performance development, so that subsequent engine performance development is more targeted, and development time and cost are saved.

Description

technical field [0001] The invention relates to the analysis of parameters of an electronically controlled diesel engine, in particular to a parameter sensitivity analysis method of an electronically controlled diesel engine, which is used for the sensitivity analysis of combustion control parameters of an electronically controlled diesel engine. Background technique [0002] In the development process of electronically controlled engines, how to achieve emission, fuel economy, power performance and reliability goals through the combination and optimization of many engine parameters has always been the core issue. This part of the work is not only a key link in the development of electronically controlled engines, but also a difficult link. . In the conventional development process, empirical judgment or a large number of DoE tests are usually used, which requires high engineering technical background and test cost, and it is difficult to find the optimal solution. The reas...

AI Technical Summary

Problems solved by technology

In the conventional development process, empirical judgment or a large number of DoE tests are usually used, which requires high engineering technical background and test cost, and it is difficult to find the optimal solution

The reason is that the electronically controlled diesel engine combustion control parameters include pre-injection advance angle, pre-injection amount, post-injection advance angle, post-injection amount, and EGR rate. If there is no certain sensitivity analysis and judgment in advance, the development process will take a lot of time, and the optimal solution will be easily missed when the DoE test is insufficient

Images