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Automatic halt control method and system for hybrid power vehicle

A hybrid vehicle, automatic shutdown technology, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., to achieve the effect of low implementation cost, improved characteristics, and smooth shutdown

Active Publication Date: 2012-07-11
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This device and method is actually only a means of correction after the event, and cannot prevent the phenomenon of engine reversal in advance, and cannot really avoid the reverse of the engine from the source. Therefore, there are still defects

Method used

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  • Automatic halt control method and system for hybrid power vehicle
  • Automatic halt control method and system for hybrid power vehicle
  • Automatic halt control method and system for hybrid power vehicle

Examples

Experimental program
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Embodiment Construction

[0024] In order to make the above objects, features and advantages more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] figure 1 It is a structural diagram of a power system of a hybrid electric vehicle according to an embodiment of the present invention. Such as figure 1 As shown, the hybrid electric vehicle of the present invention has a hybrid electric vehicle automatic shutdown control system, which specifically includes a hybrid system controller (HybridControlUnit, HCU) 01, an engine 10 for converting chemical energy into mechanical energy output, and an engine 10 for controlling the engine. 10 to control the engine controller (EngineControlUnit, ECU) 11, the gearbox 20, the gearbox controller (TransmissionControlUnit, TCU) 21 for controlling the gearbox 20, the motor 30 connected to the engine through the transmission mechanism, for A motor controller (MotorCo...

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Abstract

The invention discloses an automatic halt control method and system for a hybrid power vehicle. The control method comprises the following steps: judging whether a system conforms to a condition for entering an automatic halt working condition; if so, performing a step of stopping supplying oil to an engine; and after oil is stopped to supply to the engine, immediately performing the following control steps of protecting the engine from inversion: detecting and obtaining an engine revolving speed signal which reflects the engine revolving speed in real time, according to the engine revolving speed signal, calculating to obtain a practical target motor output torque which needs to be implemented by the motor, sending a command for implementing the practical target motor output torque to the motor, implementing the practical target motor output torque by the motor according to the command, and acting the torque implemented by the motor to the engine, thus the engine is protected from inversion before automatic halt.

Description

technical field [0001] The invention relates to engine start / stop control of a hybrid electric vehicle, in particular to a control method and system for automatic shutdown of a hybrid electric vehicle. Background technique [0002] One of the advantages of a hybrid vehicle over a traditional vehicle is that it can automatically stop the vehicle when it is idling, thereby reducing fuel consumption and emissions. The automatic shutdown function refers to the system controlling the engine to shut down when the signals such as the car gear position, vehicle speed, brake pedal, and battery status meet the conditions. And when the engine needs to be restarted, the engine starts to inject fuel when the motor drives the engine to a certain speed. [0003] For example, Chinese Invention Patent Application Publication No. CN1986307A discloses an engine start-stop control method for a hybrid electric vehicle. When the engine coolant temperature is higher than the predetermined set va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60W10/06B60W10/08B60W40/12B60W40/10B60W40/08B60W20/15B60W20/40
CPCY02T10/6286Y02T10/62
Inventor 张君鸿周宇星孟涛姜炜赵晓峰林宗浩邱国茂
Owner SAIC MOTOR
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