Hybrid electric vehicle and constant speed cruise control method and control system

A hybrid electric vehicle, cruise control technology, applied in the field of hybrid electric vehicle constant speed cruise control, can solve the problems of not considering the road conditions, low control reliability, etc., and achieve the effect of maintaining the constant speed of the vehicle

Inactive Publication Date: 2019-06-18
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a hybrid electric vehicle constant speed cruise control method to solve the problem that the existing hybrid electric vehicle constant speed cruise control method does not consider the road conditions and cause the problem of low control reliability

Method used

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  • Hybrid electric vehicle and constant speed cruise control method and control system
  • Hybrid electric vehicle and constant speed cruise control method and control system

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Embodiment Construction

[0039] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0040] In order to illustrate the constant-speed cruise control method for a hybrid vehicle provided by the present invention, it will be described in conjunction with a hybrid vehicle below, and, since other components are not the focus of the present invention, only the fixed-speed cruise control method for the hybrid vehicle will be used below. The mechanism related to high-speed cruise control will be described.

[0041] Such as figure 1 As shown, a hybrid electric vehicle includes an engine, a motor, a motor controller, a power battery and a vehicle controller. Connection, the vehicle controller is electrically connected with the engine and motor controllers to realize information interaction.

[0042] In order to realize constant speed cruise control, the vehicle controller is connected with a relevant data acquisition subsystem for receiving data inf...

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Abstract

The invention relates to a hybrid electric vehicle, a constant speed cruise control method and a constant speed cruise control system. The constant speed cruise control method includes the steps of detecting slope information at a set distance in front, detecting corresponding slope length information when the detected slope information is greater than or equal to a set first slope threshold, detecting the SOC (state of charge) of a power battery when the detected slope length information is less than or equal to a set slope length threshold, calculating the amount of power increase due to increased ramp resistance according to gradient, vehicle weight and cruising speed when the SOC of the power battery is greater than or equal to a set first SOC threshold, outputting the amount of the power increase through a motor, calculating the torque value that the motor needs to output based on motor speed, sending a signal to the motor through a controller, and controlling the output torque value of the motor in an electric state to balance and realize unchanged vehicle speed due to the increase of ramp resistance power. With vehicle information combined with road condition information, the constant speed cruise control method has the advantage of enabling the control reliability of constant speed cruise to be high.

Description

technical field [0001] The invention relates to a hybrid electric vehicle, a constant-speed cruise control method and a control system, and belongs to the technical field of the constant-speed cruise control of the hybrid electric vehicle. Background technique [0002] The constant speed cruise control system is generally used to control the constant speed of the car. Once the car is set to cruise, the fuel supply of the engine is controlled by the vehicle ECU, and the ECU continuously adjusts the fuel supply according to the road conditions and the driving resistance of the car. , so that the car always keeps running at the set speed without manipulating the accelerator, which reduces the driver's fatigue and reduces unnecessary speed changes. [0003] At present, the constant-speed cruise control of highway passenger cars has been equipped as standard, such as the patent document with the announcement number CN 105346390A and the name "A Constant-speed Cruise System and Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/14B60W10/06B60W10/08
Inventor 刘积成郑辉李元伟
Owner ZHENGZHOU YUTONG BUS CO LTD
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