Hybrid power vehicle power assembly control method

A technology of hybrid electric vehicles and powertrains, applied in hybrid electric vehicles, motor vehicles, control devices, etc., can solve the problems of inaccurate division of working modes and acceleration of the whole vehicle, and achieve improved battery life, fuel economy, and good performance. The effect of robustness and real-time

Active Publication Date: 2015-09-09
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the inaccurate division of vehicle operating modes caused by power distribution only based on vehicle speed and battery SOC state in the prior art, and to provide a powertrain control method for hybrid electric vehicles. The driver's control action can obtain the driving signal, and then predict the current driving condition, and then combine the vehicle demand torque and battery SOC state to perform power distribution, improve the fuel economy of the vehicle, and effectively control the vehicle according to different driving conditions. Exhaust emissions accelerate the development of environmentally friendly and green vehicles, meeting the requirements of economic and environmental development

Method used

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  • Hybrid power vehicle power assembly control method

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Embodiment 1

[0034] combine figure 1 , figure 2 with image 3 , a powertrain control method of a hybrid electric vehicle in this embodiment, the control method is: obtain a clear driving signal according to the driver's operation on the accelerator pedal and the brake pedal, and predict the current driving condition of the vehicle according to the driving signal. Judgment; the vehicle controller receives the current driving condition information, and collects the vehicle demand torque and battery SOC state information at the same time; according to the current driving conditions, vehicle demand torque and battery SOC state, it reasonably selects the power distribution scheme, and performs power distribution. Reasonable distribution.

[0035] Clear driving signals in this embodiment include: accelerator pedal stroke, brake pedal stroke, vehicle speed, accelerator pedal stroke change rate and brake pedal stroke change rate; figure 1 As shown, the accelerator pedal stroke and the rate of ...

Embodiment 2

[0068]A hybrid electric vehicle powertrain control method in this embodiment has the same basic features as in Embodiment 1, except that in this embodiment, the membership function MF1 is established according to the accelerator pedal stroke, and the definition is related to the accelerator pedal stroke. Corresponding two membership grades: small (NS) and large (NB). When the accelerator pedal stroke is greater than 40%, the membership grade is considered to be large, otherwise it is small; the membership function MF2 is established according to the brake pedal stroke, and the definition and system Two membership levels corresponding to the brake pedal stroke: small and large. When the brake pedal stroke is greater than 40%, the membership level is considered to be large, otherwise it is small; establish the membership function MF3 according to the vehicle speed, and define 3 corresponding to the vehicle speed Subordination levels: slow (NS), medium (ZR) and fast (NB). When the...

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Abstract

The invention discloses a hybrid power vehicle power assembly control method, and belongs to the control field of hybrid power vehicles. The hybrid power vehicle power assembly control method includes: obtaining running signals according to drive action of drivers, and then predicting current running conditions for the hybrid power vehicles, dividing the running conditions into country conditions, city conditions and high speed conditions, using a whole vehicle controller to receive current running condition information after confirming the current running conditions, and then reasonably selecting power allocation schemes according to whole vehicle demand torque and SOC states of batteries, reasonably allocating power, and achieving self-adaptive control for the different conditions. The hybrid power vehicle power assembly control method improves dynamic performance and fuel economy for the whole vehicles, can effectively control exhaust gas emission according to the different running conditions, accelerates development of environment friendly vehicles and green vehicles, and conforms to development demands of economy and environment protection.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicle control, and more specifically, relates to a hybrid electric vehicle powertrain control method. Background technique [0002] With the increasingly serious oil crisis and environmental pollution, the development of low-consumption, low-emission environmentally friendly vehicles has become the focus of current research. A hybrid vehicle has two power sources, an engine and a motor, and is combined with a battery as an energy storage. The good matching and optimal control between them can give full play to the advantages of pure electric vehicles and traditional vehicles, and become the most researched vehicle today. Significant low emission and low fuel consumption vehicles. Therefore, it will be of great significance to research and develop a hybrid electric vehicle powertrain control method based on the driver's actions. [0003] Hybrid electric vehicles generally have at least ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00
CPCB60W2520/10B60W2540/10B60W2540/12Y02T10/62
Inventor 牛礼民阮晓东杨洪源
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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