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Hybrid electric vehicle engine start timing selection method

A technology for starting hybrid vehicles and engines, applied to hybrid vehicles, motor vehicles, vehicle components, etc., can solve problems such as not well considered, and achieve the effect of improving energy utilization

Inactive Publication Date: 2017-04-26
TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Hybrid vehicles are driven by the engine and the electric motor. In order to better meet various power requirements, more and more hybrid vehicles are equipped with gearboxes. The existing gearbox shifting principles are generally determined based on information such as engine speed. To meet the high-efficiency operation of the engine, and the vehicle is driven by an electric motor when starting in a low gear. When the vehicle speed reaches a certain value, switch to a high gear and start the engine, and the engine drives the vehicle. This gear shifting method is only selected according to the high-efficiency zone of the engine. It does not take into account the situation of the vehicle power supply and the current vehicle power requirements. For example, if the current vehicle power supply is sufficient and there is no large power demand, the timing of engine startup can be extended, and the output of the power supply can be increased. Kinetic energy recovery increases more energy storage space

Method used

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  • Hybrid electric vehicle engine start timing selection method

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Embodiment Construction

[0017] The concrete implementation method of the present invention is as follows:

[0018] A hybrid vehicle is a new energy vehicle driven by an engine and an electric motor. In order to better adapt to various working conditions and improve the power of the hybrid vehicle, a gearbox is often added to the hybrid vehicle, and the shift timing of the gearbox Generally, it is based on the high-efficiency zone of the engine speed to select whether to shift gears, and whether to select a high gear or a low gear. However, due to different operating conditions or different needs, if only the current engine high-efficiency zone is considered, the effective energy efficiency may be reduced. use, and cannot satisfy the driver's sense of operation. For example, when the power supply is sufficient, start the engine and select a high gear to run. Although the engine runs in a high-efficiency zone, the power of the power supply cannot be released and cannot be effectively used. The lack of ...

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Abstract

The invention discloses a hybrid electric vehicle engine start timing selection method. The current power requirement is judged through acquisition of the accelerator pedal stepping condition, then the electric quantity storage state of a power electric source is acquired to judge the current optimal drive power source, and the energy use rate of a hybrid electric vehicle is increased through control over the gear shifting of a gearbox and the start timing of an engine.

Description

technical field [0001] The invention relates to a hybrid electric vehicle, in particular to a method for selecting an engine start timing and a gear position of a dual power supply hybrid electric vehicle. Background technique [0002] Hybrid vehicles are driven by the engine and the electric motor. In order to better meet various power requirements, more and more hybrid vehicles are equipped with gearboxes. The existing gearbox shifting principles are generally determined based on information such as engine speed. To meet the high-efficiency operation of the engine, and the vehicle is driven by an electric motor when starting in a low gear. When the vehicle speed reaches a certain value, switch to a high gear and start the engine, and the engine drives the vehicle. This gear shifting method is only selected according to the high-efficiency zone of the engine. It does not take into account the situation of the vehicle power supply and the current vehicle power requirements. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/11B60W10/06B60W20/10B60W20/30
CPCB60W10/11B60W10/06B60W20/10B60W20/30B60W2510/244B60W2540/10B60W2710/06B60W2710/1005
Inventor 张辉
Owner TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECH CO LTD
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