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Hybrid electric vehicle limping control method and hybrid electric vehicle

A technology of hybrid electric vehicles and control methods, which is applied in the field of vehicles, can solve problems such as imperfect limp control methods, and achieve the effects of improving coordinated control and driving safety

Active Publication Date: 2021-12-28
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current limp control method is not perfect. Although the driving safety can be guaranteed to a certain extent, the driving safety needs to be further improved, and there are control coordination problems when various faults occur.

Method used

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  • Hybrid electric vehicle limping control method and hybrid electric vehicle
  • Hybrid electric vehicle limping control method and hybrid electric vehicle
  • Hybrid electric vehicle limping control method and hybrid electric vehicle

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Embodiment Construction

[0047]In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings but not all of them.

[0048] Such as figure 1 As shown, the present embodiment provides a hybrid electric vehicle, including a powertrain and wheels, and the powertrain includes an engine, a generator, a clutch, a drive motor, a transmission unit and a power battery, wherein the engine is selectively connected to the When the transmission unit is connecte...

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Abstract

The invention relates to the field of vehicles and discloses a limp control method for a hybrid electric vehicle and the hybrid electric vehicle, fault types of the hybrid electric vehicle are divided according to priorities according to fault severity, and when multiple fault types with different priorities exist, a limp control mode can be determined according to the fault type with the higher priority; the limp control modes are divided according to the safety level and the priorities, so when a plurality of faults with the same priority exist, a vehicle can be controlled to run according to the limp control mode with the higher priority in the determined limp control modes; when the hybrid electric vehicle breaks down, it is guaranteed that the whole vehicle runs safely and reliably according to the requirements of a driver, meanwhile, the most reasonable limping mode is selected, limping of the vehicle is controlled to the maximum extent on the premise that safety is guaranteed, coordination control when various faults happen is improved, and driving safety is further improved.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a limp control method of a hybrid electric vehicle and the hybrid electric vehicle. Background technique [0002] When a vehicle breaks down, in order to ensure the safety of the vehicle and the occupants, the lameness of the vehicle is usually controlled to the greatest extent under the premise of ensuring safety, so that the vehicle can drive away from dangerous sections such as intersections or expressways or drive to the vicinity as soon as possible. car repair shop. [0003] However, there are many kinds of vehicle faults, and the corresponding limp control will be different due to different vehicle configurations and power source types. The current limp control method is not perfect. Although the driving safety can be guaranteed to a certain extent, the driving safety needs to be further improved, and there are control coordination problems when various faults occur. Contents of ...

Claims

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Application Information

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IPC IPC(8): B60W20/50B60W20/20
CPCB60W20/50B60W20/20B60W2520/10Y02T10/62
Inventor 王德平李想刘元治李晶李畅
Owner CHINA FIRST AUTOMOBILE
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