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Engine accessory torque acquisition method and engine accessory torque acquisition device

A technology of engine and engine speed, which is applied in the direction of motor vehicles, transportation and packaging, hybrid vehicles, etc., can solve the problems of torque calibration of the engine's own accessories, and achieve the effect of improving accuracy and torque control accuracy

Active Publication Date: 2017-06-13
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the accurate calibration of the engine output torque and engine friction torque has been realized, but the calibration of the engine's own accessory torque has not been realized, so how to obtain the engine's own accessory torque becomes a problem

Method used

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  • Engine accessory torque acquisition method and engine accessory torque acquisition device
  • Engine accessory torque acquisition method and engine accessory torque acquisition device
  • Engine accessory torque acquisition method and engine accessory torque acquisition device

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Embodiment Construction

[0065] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0066] In this embodiment, the engine accessories specifically include a generator, an electronically controlled fan, an air compressor, a steering pump and an air conditioner compressor. Obtaining the torque of the engine accessories is to obtain the torque of the generator, electronically controlled fan, air compressor, steering pump and air conditioner compressor. see figure 1 , which shows a flowchart of a method for obtaining to...

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Abstract

The invention provides an engine accessory torque acquisition method and an engine accessory torque acquisition device. The method includes the steps of accurately acquiring generator demand torque, electrically-controlled fan demand torque, air compression pump demand torque, steering pump demand torque and air conditioning compressor demand torque; performing a summation operation on the generator demand torque, the electrically-controlled fan demand torque, the air compression pump demand torque, the steering pump demand torque and the air conditioning compressor demand torque to obtain accurate demand torque of engine accessories. The precision of the torque in an engine is improved, and the torque control precision of the engine is improved.

Description

technical field [0001] The invention relates to the field of engine design, in particular to a method and device for acquiring torque of an engine accessory. Background technique [0002] Compared with pure electric vehicles, plug-in hybrid vehicles can not only play the advantages of long continuous working time of the engine and good power performance, but also take advantage of the advantages of no pollution and low noise of the motor, so plug-in hybrid vehicles are popular in the market. widely used. [0003] The engine control mode of the plug-in hybrid vehicle is torque control, so the torque control accuracy of the engine is relatively high. At present, the torque control accuracy of the engine is improved by improving the accuracy of the torque in the engine. Among them, the internal torque of the engine is the sum of the torque at the output end of the engine, the friction torque of the engine and the torque of the engine's own accessories. However, the accurate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/15B60W40/00
CPCB60W40/00B60W2710/0666
Inventor 王德军李海田娄丙民陈宾车文超李宗吉
Owner WEICHAI POWER CO LTD
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