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Idle speed control method, device and vehicle of hybrid electric vehicle

A hybrid electric vehicle, idle speed control technology, applied in the direction of hybrid electric vehicles, control devices, electric vehicles, etc., can solve the problems of reducing the service life of the clutch, aggravating the degree of clutch wear, and large slip-friction difference of the clutch, etc., so as to prolong the service life, The effect of slowing down the degree of wear and reducing the difference in sliding friction

Active Publication Date: 2022-06-21
HYCET TRANSMISSION SYST (JIANGSU) CO LTD BAODING RES & DEV BRANCH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] However, in the control strategy of the related art, the motor needs to keep idle speed for a long time, which causes noise to be easily generated during idle speed, and greatly increases power consumption. At the same time, it also leads to a large slip-friction difference of the clutch during the creeping process, which continuously increases the wear degree of the clutch. , reduce the service life of the clutch, and the user experience is poor

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  • Idle speed control method, device and vehicle of hybrid electric vehicle
  • Idle speed control method, device and vehicle of hybrid electric vehicle
  • Idle speed control method, device and vehicle of hybrid electric vehicle

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Embodiment Construction

[0053] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

[0054] The present invention is made by the inventor based on the following problems and consciousness:

[0055] In the related art, creeping control is usually realized through the following control strategies, as follows:

[0056] The first control strategy is: the clutch is directly closed during the creep process, and the creep is realized by controlling the motor speed; the second control strategy is: under any working condition, the TCU requests a constant idle speed for the motor, and the creep is realized by controlling the clutch. Among them, creeping refers to a state in which the whole vehicle changes from a static state to a stable speed without stepping on the accelerator after the shift lever is at D or R and the brake is released.

[0057] However, since the engine needs to rely on the ...

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Abstract

The present application relates to the field of automobile technology, and in particular to an idle speed control method, device and vehicle of a hybrid electric vehicle, wherein the method includes the following steps: detecting the current driving mode of the hybrid electric vehicle; when detecting that the current driving mode is a pure electric mode , receiving the idle speed request of the hybrid electric vehicle; generating the target idle speed of the hybrid electric vehicle according to the idle speed request, so as to control the output torque of the P2 motor of the hybrid electric vehicle according to the target idle speed until the creep speed is reached. The method of the embodiment of the present invention can effectively avoid noise generated by long-time idling, reduce power consumption and clutch slippage during creeping, slow down the degree of wear of the clutch, prolong the service life of the clutch, and improve user experience.

Description

technical field [0001] The present invention relates to the technical field of automobiles, in particular to a method, device and vehicle for idling control of a hybrid electric vehicle. Background technique [0002] For a hybrid vehicle equipped with a P2 hybrid module and a DCT (Dual Clutch Transmission) structure, when the driving mode is pure electric mode, the whole vehicle can be powered by the P2 motor in the hybrid module, and usually through the following The control strategy realizes creep in pure electric mode: [0003] Under any working conditions, the TCU (Transmission Control Unit, automatic transmission control unit) requests a constant idle speed for the motor, and creeps by controlling the clutch. Among them, creeping refers to a state in which the shift lever is in D or R gear, after releasing the brake, without stepping on the accelerator, the whole vehicle goes from static to a stable vehicle speed. [0004] However, in the control strategy of the relat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/18B60W10/08B60W10/02B60W20/00B60L15/20
CPCB60W30/18072B60W30/18063B60W10/08B60W10/02B60W20/00B60L15/20B60L2240/423Y02T10/72
Inventor 谢立臣戴晓丹徐雷李韶锁刘大权梁磊
Owner HYCET TRANSMISSION SYST (JIANGSU) CO LTD BAODING RES & DEV BRANCH
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