Title:
SHIFT-DOWN CONTROL METHOD AND SYSTEM OF HYBRID VEHICLE
Document Type and Number:
Japanese Patent JP2015061772
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide shift-down control method and system of a hybrid vehicle capable of eliminating an acceleration delay feeling of a hybrid vehicle and improving acceleration linearity before and after gear change.SOLUTION: A shift-down control method of a hybrid vehicle includes: a step for determining whether or not a travel mode of a hybrid vehicle is an electric motor vehicle (EV) mode; a step for determining whether or not kickdown for shift-down has occurred when the hybrid vehicle is travelling in the EV mode; a step for turning an engine ON and performing shift start (SS) when a shift-down condition by the kickdown is satisfied; a step for determining whether or not the RPM of the motor is synchronized with the RPM of the engine before performing the actual shift begin (SB); a step for coupling an engine clutch when the RPM of the motor is synchronized with the RPM of the engine; and a step for performing actual shift by performing the actual shift begin (SB) when the engine clutch is coupled.
Inventors:
LEE SOO BANG
JUNG TAI JIN
JUNG TAI JIN
Application Number:
JP2013245381A
Publication Date:
April 02, 2015
Filing Date:
November 27, 2013
Export Citation:
Assignee:
HYUNDAI MOTOR COMPANY CO LTD
International Classes:
B60W20/00; B60K6/48; B60K6/54; B60L15/20; B60L50/16; B60W10/02; B60W10/06; B60W10/08; B60W10/10
Domestic Patent References:
| JP2008179242A | 2008-08-07 | |||
| JP2013043592A | 2013-03-04 | |||
| JP2001182821A | 2001-07-06 |
Foreign References:
| WO2012053633A1 | 2012-04-26 | |||
| WO2012102370A1 | 2012-08-02 |
Attorney, Agent or Firm:
Kyosei International Patent Office