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HCU (hybrid control unit) and torque compensation control method

A technology of torque compensation and control method, which is applied in the control field of HCU and torque compensation, and can solve problems such as reducing driving safety, prolonging shift time, and torque deviation

Active Publication Date: 2017-06-06
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there may be a discrepancy between the required torque for vehicle driving and the actual torque provided by the engine, and slow shifting speed, which will affect the dynamic performance of the vehicle, reduce driving safety, and prolong the shifting time

Method used

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  • HCU (hybrid control unit) and torque compensation control method
  • HCU (hybrid control unit) and torque compensation control method

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Embodiment Construction

[0081] With the development of the automobile industry and the popularization of the concept of energy saving and environmental protection, the electrification of automobiles will become the development trend in the future. However, due to the shortcomings of the pure electric drive system such as insufficient mileage and high cost, it is still difficult for pure electric vehicles that use motors alone to gain market and user approval. Combining the motor with the traditional engine to form a hybrid system, through the motor to improve the working state of the engine, improve the efficiency of the entire powertrain, and enhance the energy utilization rate of the vehicle, will undoubtedly have a broad market prospect for a considerable period of time.

[0082] At present, when the vehicle is not shifting gears, when there is a deviation between the required torque of the engine and the actual torque, if there is no motor compensation, the actual torque of the engine may not reac...

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Abstract

The invention provides an HCU (hybrid control unit) and a torque compensation control method. The method comprises the following steps of judging whether the torque of an engine needs to be compensated or not; when the condition that the torque of the engine needs to be compensated is determined, calculating the dimension of the torque to be compensated; judging whether the absolute value of the compensation torque is smaller than the absolute value of the torque capable of being provided by a motor or not; if the absolute value of the compensation torque is smaller than or equal to the absolute value of the torque capable of being provided by the motor, compensating the engine according to the compensation torque. By using the technical scheme, the deviation between the required torque of the vehicle driving and the practical provided torque of the engine can be reduced, so that the driving safety can be improved; in addition, the gear shifting time can be reduced.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicle torque adjustment, in particular to an HCU and a control method for torque compensation. Background technique [0002] Cars are playing an increasingly important role in modern society and have become an indispensable part of most people's daily lives. Under the background of advocating environmental protection, pure electric vehicles and hybrid electric vehicles (Hybrid Electric Vehicle, HEV) emerge at the historic moment. The hybrid control unit (Hybrid Control Unit, HCU) is the core of the entire hybrid vehicle control, mainly responsible for coordinating the engine management system (Engine Management System, EMS), transmission control unit (Transmission Control Unit, TCU) and motor controller (Motor Controller Unit, MCU) work, and is responsible for the high and low voltage power management and fault detection of the entire power system. [0003] At present, when a hybrid ve...

Claims

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Application Information

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IPC IPC(8): B60W20/10B60W10/08
CPCB60W10/08B60W20/00B60W2510/0657B60W2710/083
Inventor 马成杰张鹏君刘汪洋张吉军赵沂侯清亮
Owner SAIC MOTOR
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