Electric control diesel engine parameter sensitivity analysis method

A sensitivity analysis, diesel engine technology, applied in the field of electronically controlled diesel engine parameter sensitivity analysis, combustion control parameter sensitivity analysis, can solve problems such as a lot of time, high engineering technical background and test cost requirements, and a large number of parameter combinations. , to achieve the effect of improving efficiency

Active Publication Date: 2015-04-22
DONGFENG CUMMINS ENGINE
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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

Method used

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  • Electric control diesel engine parameter sensitivity analysis method
  • Electric control diesel engine parameter sensitivity analysis method
  • Electric control diesel engine parameter sensitivity analysis method

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 As shown, the electronically controlled diesel engine parameter sensitivity analysis method of the present invention comprises the following steps:

[0027] S100. Calculate the key working condition points in the operating condition area of ​​the electronically controlled diesel engine through PreDoE, wherein the operating condition area of ​​the electronically controlled diesel engine of the present invention includes an emission control area and a vehicle operating condition area. The calculation process of the key operating point specifically includes the following steps:

[0028] S101. Calculate A, B, and C rotational speeds n and corresponding torque Tq in the ESC regulations according to the external characteristic torque curve and accessory work curve interpolation, and store the obtained working condit...

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Abstract

The invention relates to an electric control diesel engine parameter sensitivity analysis method which comprises the steps that key working condition points in an electric control diesel engine operation working condition zone are computed through PreDoE; and then a parameter combination scheme is obtained through an appointed engine parameter object and a factor level, parameter combination in the parameter combination scheme is appointed for the key working condition points, data collecting is carried out on parameter combination with bench tests combined, according to collected data, parameter sensitivity is analyzed, sensitive parameters are reserved to a following-stage development scheme, and non-sensitive parameters are directly removed. The method is suitable for sensitivity analysis of various electric control diesel engine parameters, before engine performance development, parameter combination schemes are prepared, following engine performance development is 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...

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Application Information

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IPC IPC(8): G01M15/00
Inventor 舒咏强刘利
Owner DONGFENG CUMMINS ENGINE
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