Plug-in four-wheel driven vehicle dynamical system fault handling method , system and vehicle

A power system and vehicle power technology, which is applied to hybrid vehicles, motor vehicles, transportation and packaging, and can solve problems such as vehicles being unable to drive

Inactive Publication Date: 2018-09-28
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a plug-in four-wheel drive vehicle power system fault handling method, system and ve

Method used

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  • Plug-in four-wheel driven vehicle dynamical system fault handling method , system and vehicle
  • Plug-in four-wheel driven vehicle dynamical system fault handling method , system and vehicle
  • Plug-in four-wheel driven vehicle dynamical system fault handling method , system and vehicle

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Embodiment approach

[0044] As a specific implementation, when it is determined that the front drive motor system fails to output torque, the torque output of the front drive motor system is requested to be 0, and only the rear drive motor system is allowed to output torque to drive the vehicle to control The vehicle enters rear drive mode;

[0045] When it is determined that the rear drive motor system fails to output torque, the torque output of the rear drive motor system is requested to be 0, and only the front drive motor system is allowed to output torque to drive the vehicle, so as to control the vehicle to enter the front drive mode.

[0046] Further, in the front drive mode, when the vehicle speed exceeds a preset speed threshold, the front drive motor system and the engine system are used to jointly drive the vehicle.

[0047] As a specific implementation, when it is determined that the engine system or the generator system has a fault that cannot output torque, the engine is controlled ...

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Abstract

The invention discloses a plug-in four-wheel driven vehicle dynamical system fault handling method. Running status data monitored by dynamical systems in a four-wheel driven vehicle are obtained, eachdynamical system includes a whole vehicle control system, a front drive motor system, an electric generator system, a front axle clutch system, a rear drive motor system, an engine system and a powerbattery system; whether the current operating dynamical system is faulty or not is determined according to the running status data; when the current operating dynamical system is judged to be faulty,a none-faulty system is selected from the dynamical systems according to the current vehicle information to serve as a power source for driving the vehicle. The problem that the vehicle can not travel when one or several power sources of the current hybrid four-wheel driven vehicle are faulty is solved. When the vehicle is faulty, the set safe state is guaranteed to achieve, meanwhile the runningrequirement of a driver can be met. In addition, the invention also provides a plug-in four-wheel driven vehicles dynamical system fault handling system and the vehicle.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicle control, in particular to a method, system and vehicle for handling faults in the power system of a plug-in four-wheel drive vehicle. Background technique [0002] Limited petroleum reserves, increasing demand and cost of petroleum fuels, as well as air pollution and greenhouse gas emissions all pose challenges to the development of the traditional automobile industry, and electric vehicles have become a research hotspot. [0003] Since people pay more and more attention to long-distance self-driving travel besides work, the requirements for the driving ability of vehicles are also getting higher and higher. ) four-wheel drive vehicles are becoming more and more popular. [0004] Different from conventional internal combustion engine-powered vehicles, new energy power systems or pure electric systems have more flexible driving forms, and the system configuration is not limited to ...

Claims

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Application Information

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IPC IPC(8): B60W20/50B60W10/06B60W10/08
CPCB60W10/06B60W10/08B60W20/50B60W2510/0657B60W2510/083B60W2510/242B60W2710/0666B60W2710/083Y02T10/62
Inventor 熊张林肖波吴康朱睿唐先尧
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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