Hybrid vehicle creep control method and device

A technology of hybrid electric vehicles and control methods, applied in the field of automobiles, to achieve the effects of strong versatility, easy implementation, and simple control methods

Active Publication Date: 2016-04-13
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the aforementioned technical problem that there is no crawling control method for this type of vehicle, the present invention provides a creeping control method and device for a hybrid vehicle

Method used

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  • Hybrid vehicle creep control method and device
  • Hybrid vehicle creep control method and device
  • Hybrid vehicle creep control method and device

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Embodiment Construction

[0066] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0067] The hybrid electric vehicle of the embodiment of the present invention, as figure 1 As shown, the hybrid vehicle includes: a front axle power system, a rear axle power system, and a high-voltage power battery. The front axle power system includes: engine, generator and transmission. The rear axle power system includes: drive motor. Among them, the engine and the generator provide power for the front axle through the transmission, the drive motor provides power for the rear axle, the generator charges the high-voltage power battery, and the high-voltage power bat...

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Abstract

The invention provides a crawling control method for a hybrid electric vehicle. An engine of the hybrid electric vehicle provides power for a front axle through a transmission, a drive motor provides power for a rear axle, and a high-voltage power battery provides electric energy for the drive motor. The method includes the steps that whether the hybrid electric vehicle meets the following conditions that a gear shifting lever is in a reverse gear or a forward gear, the value of the vehicle speed is lower than a preset vehicle speed value, and an accelerator pedal is loosened or not is detected; when the hybrid electric vehicle meets all the conditions, whether the transmission is in a neutral position or not is detected; if the detection result shows that the transmission is in the neutral position, the drive motor is controlled to drive the hybrid electric vehicle, and the hybrid electric vehicle is in a crawling mode; if the detection result shows that the transmission is not in the neutral position, after the transmission is in the neutral position, the drive motor is controlled to drive the hybrid electric vehicle, and the hybrid electric vehicle is in the crawling mode. The invention further provides a crawling control device. The crawling control method is simple, easy to implement and high in universality.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a creeping control method and device of a hybrid electric vehicle. Background technique [0002] Crawl or crawl is a driving function commonly provided by conventional internal combustion engine vehicles with automatic transmissions. This function means that after the vehicle is started, the gear is put into gear, and within a lower speed range, the transmission system is automatically engaged or semi-engaged, and a part of the driving force is applied to make the vehicle crawl forward or backward at a low speed. The vehicle, according to the current position of the brake pedal, Control its power system to output the corresponding driving force, and control the gear of the transmission to achieve the desired speed. This function is conducive to the smooth start of the vehicle and the slow moving of the vehicle (such as reversing into or out of the garage, slowing down when encounterin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/18B60W20/10
CPCB60W10/06B60W10/08B60W10/26B60W20/00B60W30/18B60W2710/0666B60W2710/083
Inventor 王俊华徐吉汉黄河夏珩魏丹郭俊甘新华杨春雷王敏苏建云罗宇亮伊海霞
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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