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Apparatus and method for controlling creep torque of hybrid electric vehicle

a hybrid electric vehicle and creep torque technology, applied in vehicle position/course/altitude control, process and machine control, instruments, etc., can solve the problems of deterioration of fuel consumption, and deterioration of shift feel during shifting, so as to improve shift feel and fuel consumption of hybrid electric vehicles

Active Publication Date: 2016-03-31
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an apparatus and method for controlling the creep torque of a hybrid electric vehicle to improve its shift feel and fuel efficiency. By controlling the creep torque during shifting prior to stop, fuel consumption and shift feel can be improved.

Problems solved by technology

In this shift process, a shift feel may be deteriorated when a torque variation is generated, a torque is less than 0, or a torque is too high.
As shown in FIG. 4, if the creep torque of the hybrid electric vehicle is increased and exceeds 0 torque before stopping and shifting, which results in deterioration of fuel consumption.
Moreover, a shift feel may be deteriorated during shifting before stopping because a torque variation is generated.

Method used

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  • Apparatus and method for controlling creep torque of hybrid electric vehicle
  • Apparatus and method for controlling creep torque of hybrid electric vehicle
  • Apparatus and method for controlling creep torque of hybrid electric vehicle

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Embodiment Construction

[0038]Reference will now be made in detail to various embodiments of the present invention(s), examples of which are illustrated in the accompanying drawings and described below. While the invention(s) will be described in conjunction with exemplary embodiments, it will be understood that the present description is not intended to limit the invention(s) to those exemplary embodiments. On the contrary, the invention(s) is / are intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

[0039]In the following detailed description, only certain exemplary embodiments of the present invention have been shown and described, simply by way of illustration. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the...

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PUM

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Abstract

An apparatus and a method for controlling a creep torque of a hybrid electric vehicle that outputs the creep torque to improve shift feel and fuel consumption of the hybrid electric vehicle, may include the method for controlling a creep torque of a hybrid electric vehicle that may include detecting data of the hybrid electric vehicle for controlling the creep torque, determining whether a vehicle speed is greater than or equal to a predetermined speed and the hybrid electric vehicle is shifting from a current shift stage to 1 stage when the current shift stage is 3 stage or 2 stage, applying a creep torque factor depending on a shift stage and a brake amount when the hybrid electric vehicle is shifting from 3 stage or 2 stage to 1 stage, and controlling a motor to output the creep torque to which the creep torque factor is applied.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application claims priority to and the benefit of Korean Patent Application No. 10-2014-0131638 filed on Sep. 30, 2014, the entire contents of which is incorporated herein for all purposes by this reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to an apparatus and a method for controlling a creep torque of a hybrid electric vehicle. More particularly, the present invention relates to an apparatus and a method for controlling a creep torque of a hybrid electric vehicle that outputs the creep torque to improve shift feel and fuel consumption of the hybrid electric vehicle.[0004]2. Description of Related Art[0005]A hybrid vehicle is a vehicle using two or more different kinds of power sources and is generally a vehicle that is driven by an engine that obtains a driving torque by burning fuel and a motor that obtains a driving torque with battery power.[0006]Hybrid electric ve...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B60W20/00B60K6/48B60L15/20B60L50/16
CPCB60W20/00B60L15/2063B60K6/48B60W2520/10Y10S903/902B60W2540/12B60W2540/10B60W2710/083B60W2510/1005B60W10/08B60W40/08B60W40/105B60W2540/16B60L15/2009B60L15/2054B60W30/18063B60L2240/12B60L2240/423B60L2260/22B60L2240/48Y02T10/72B60L2240/486B60L2250/26B60L2260/30B60K2006/4825B60K6/387B60W2710/1005B60W20/30B60W10/11B60W10/184Y02T10/62Y02T10/64
Inventor HUH, JEE, WOOKDU, GWANG, IIKIM, SUNG, DEOKCHO, TEH, HWAN
Owner HYUNDAI MOTOR CO LTD
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