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Test method for working mode division of hybrid electric vehicle powertrain

A hybrid electric vehicle, working mode technology, applied in the field of computer analysis, to achieve the effect of solving vehicle load, continuous adjustability

Active Publication Date: 2019-10-25
CHINA AUTOMOTIVE ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional test methods often need to analyze and count multiple cycle conditions and single conditions to find the areas divided by powertrain working modes, but this method has major drawbacks, that is, it is difficult to complete comprehensively and systematically. Drawing of Powertrain Mode Division Diagram

Method used

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  • Test method for working mode division of hybrid electric vehicle powertrain
  • Test method for working mode division of hybrid electric vehicle powertrain

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Embodiment Construction

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0041] Such as figure 1As shown, the present invention provides a kind of test method of hybrid electric vehicle powertrain working mode division, comprises the steps:

[0042] 1. Place the drive wheel of the hybrid vehicle to be tested on the drum of the drum test bench, and the non-drive wheels are fixed or idle with the drum of the drum test bench.

[0043] 2. Set the drum to constant speed mode.

[0044] 3. Set the car to the forward gear, and turn off the electric devices such as car accessories and air conditioners.

[0045] 4. ...

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Abstract

The invention provides a hybrid electric vehicle power assembly working mode division testing method, comprising the following steps of S2, placing a to-be-tested hybrid electric vehicle on a roller of a drum test bench, and setting a working mode of the roller of the drum test bench; S2, collecting vehicle working data of the hybrid electric vehicle in an operation process, and setting rotation speed of the roller, and adjusting operation vehicle speed; and S3, adjusting vehicle acceleration pedal opening degree through utilization of a pedal limiter, obtaining hybrid electric system state data of the vehicle at certain operation vehicle speed under different load conditions, analyzing power assembly working modes of the hybrid electric system according to the data, recording the power assembly working modes under a great number of vehicle speed-load conditions, generating a power assembly working mode dot matrix state graph, and obtaining each power assembly working mode division interval.

Description

technical field [0001] The invention relates to the field of computer analysis, in particular to a test method for division of working modes of a power assembly of a hybrid electric vehicle. Background technique [0002] Hybrid electric vehicle interprets the organic combination of internal combustion engine, power battery and coupling technology with its good environmental protection and practicality, solves the current problems of low energy density of power battery and short driving range of pure electric vehicles, and has a high technical level and market application value. [0003] Affected by its multi-energy coupling characteristics, hybrid electric vehicles have the problem of various powertrain working modes and overlapping working areas between modes. In the process of benchmarking, a large number of tests need to be carried out on the vehicle, in order to obtain the working mode division of the powertrain of the benchmark prototype through the data analysis of a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007G01D21/02
CPCG01D21/02G01M17/0072
Inventor 欧阳王鹏徐磊王洪荣周舟孙瀚文唐国强关静白琴陈周欢尹华钢
Owner CHINA AUTOMOTIVE ENG RES INST
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