Method and control device for operating electric vehicle or hybrid vehicle

A technology for hybrid vehicles and control equipment, which is applied in road vehicle drive control systems, motor vehicles, control devices, etc., and can solve problems such as acceleration

Active Publication Date: 2019-07-05
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Undesirable uncontrolled acceleration of the vehicle can thus result, for example, when the vehicle is driven on level ground and an excessively high torque is provided for an excessively long period of time
this is disadvantageous

Method used

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  • Method and control device for operating electric vehicle or hybrid vehicle
  • Method and control device for operating electric vehicle or hybrid vehicle
  • Method and control device for operating electric vehicle or hybrid vehicle

Examples

Experimental program
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Embodiment Construction

[0020] The invention relates to a method for operating an electric vehicle or a hybrid vehicle with a drive unit including an electric machine. Furthermore, the invention relates to a control device for carrying out the method.

[0021] In this context, the invention concerns details of the creep and hill-start functions of an electric vehicle or a hybrid vehicle, in which the torque is provided at the output by the electric machine.

[0022] When there is no accelerator pedal actuation on the driver's side, and preferably also when there is also no brake pedal actuation on the driver's side, the creep and hill-start functions are provided at the output of the vehicle via the electric motor of the drive unit actual torque. This actual torque provided at the output depends on the target torque required on the control side by the creep and hill-start functions.

[0023] Even when the accelerator pedal is not actuated, but the brake pedal is actuated, the creep and hill start f...

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PUM

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Abstract

The invention relates to a method and control device for operating an electric vehicle or a hybrid vehicle. The vehicle comprises a drive unit including an electrical machine, wherein when there is noaccelerator pedal operation, via a creeper and hill start function on the electric machine, an actual moment is provided at the output end, and the actual moment is depended on a rated moment requested by the creep and hill start function at the control side. In accordance with the invention, a change in the acceleration that is formed depending on the actual moment at the output end is determined. Depending on the acceleration change, a maximum permissible creep and hill start moment is determined. Then, if the rated moment requested by the creep and hill start function is smaller than the maximum permissible creep and hill start moment, the rated moment requested by the creep and hill start function is left unchanged. Then, when the rated moment requested by the creep and hill start function is greater than the maximum permissible creep and hill start moment, the rated moment requested by the creep and hill start function is reduced to zero or in reduced to about zero.

Description

technical field [0001] The invention relates to a method for operating an electric vehicle or a hybrid vehicle. Furthermore, the invention relates to a control device for operating an electric vehicle or a hybrid vehicle. Background technique [0002] When the driver of an electric vehicle or a hybrid vehicle actuates the accelerator pedal, also called the accelerator pedal, on the driver's side, the electric motor of the electric vehicle or hybrid vehicle operates on the The actual torque is available at the output. The actual torque, which depends on the driver's wishes, can already be monitored by simple safety functions. [0003] Electric vehicles and hybrid vehicles using creep and hill start functions are known. If there is no accelerator pedal actuation on the driver's side, the creep and hill-start function provides an actual torque at the output, which depends on the target torque requested by the creep and hill-start function on the control side . Thereby, a c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/18B60W10/08B60W10/18
CPCB60W30/18063B60W10/08B60W10/18B60W2540/12B60W2710/083B60W2552/15B60W30/18B60W2540/10B60W10/06B60W30/18027B60W2710/0666Y02T10/72B60W40/076B60W2510/0657B60W2720/103B60Y2300/18058B60Y2200/91B60Y2200/92
Inventor 克里斯蒂安·阿伦斯
Owner ZF FRIEDRICHSHAFEN AG
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