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Engine characteristic working condition point polymerization method

A polymerization method and engine technology, applied in the field of vehicles, can solve problems such as lack of polymerization methods, low efficiency, and numerous fuel consumption performance analysis tasks

Pending Publication Date: 2021-11-12
DONGFENG MOTOR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing engine characteristic operating point aggregation method is lacking, and there is no simplified treatment method for all models equipped with the same engine, which makes the entire fuel consumption performance analysis work cumbersome and inefficient

Method used

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  • Engine characteristic working condition point polymerization method
  • Engine characteristic working condition point polymerization method
  • Engine characteristic working condition point polymerization method

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Embodiment Construction

[0019] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention.

[0020] The aggregation method of engine characteristic working condition points of the present invention uses the shortest distance partition simplification method to aggregate and simplify the set of engine working condition points to obtain several engine working condition simplified points, such as figure 1 As shown, it specifically includes the following steps:

[0021] Step 1: Acquiring engine operating condition points, wherein each of the engine operating condition points includes rotational speed and torque information. When the engine is working, the speed and torque information of the engine at each time is collected according to the set sampling frequency, and m...

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Abstract

The invention discloses an engine characteristic working condition point polymerization method. The method comprises the following steps: acquiring an engine operating point; marking each engine working condition point in a rotating speed and torque coordinate system in a coordinate point form; dividing the coordinate system into a plurality of grids at certain horizontal and vertical coordinate intervals; determining the number of engine operating points in each grid; dividing a grid containing engine operating points into two regions by taking a grid as a basic unit and taking the principle that points are the same or closest, then continuously dividing the obtained regions into two regions according to the same method, and so on, and finally dividing regions with the same quantity as the required simplified quantity of the engine operating points; and calculating an engine working condition simplification point in each finally divided region. Through a partition simplification method, the engine characteristic working condition points with representative significance can be quickly obtained, the engine working condition points of the whole area are represented, and the follow-up analysis and research period for the performance such as engine oil consumption is shortened.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a method for aggregating engine characteristic operating condition points. Background technique [0002] The actual working condition of the engine is referred to as the working condition for short. The working condition of the engine can be described by a set of parameters that characterize its certain performance. The main parameters are the speed and torque (or effective power), and these parameters take different values. That is, it corresponds to different engine operating conditions. [0003] The fuel consumption of traditional fuel vehicles depends largely on the universal characteristics of the engine. The universal characteristics of the engine are composed of hundreds of operating points, and its development is difficult and takes a long time. However, in the development of the vehicle’s fuel consumption under working conditions, not all the operating conditions of th...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F30/15
CPCG06F30/20G06F30/15
Inventor 辛力王岭贾志勇李迎浩田威
Owner DONGFENG MOTOR GRP