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1. (US20100273604) HYBRID SYSTEM CONTROL METHOD

Office : United States of America
Application Number: 12809949 Application Date: 10.12.2008
Publication Number: 20100273604 Publication Date: 28.10.2010
Publication Kind : A1
Prior PCT appl.: Application Number:JP08072375 ; Publication Number: Click to see the data
IPC:
B60W 10/02
B60W 20/00
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
W
CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
10
Conjoint control of vehicle sub-units of different type or different function
02
including control of driveline clutches
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
W
CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
20
Control systems specially adapted for hybrid vehicles, i.e. vehicles having two or more prime movers of more than one type, e.g. electrical and internal combustion motors, all used for propulsion of the vehicle
Applicants: IMASEKI TAKASHI
Inventors: Imaseki Takashi
Agents: RONALD E. GREIGG;GREIGG & GREIGG P.L.L.C.
Priority Data: 2007 328683 20.12.2007 JP
Title: (EN) HYBRID SYSTEM CONTROL METHOD
Abstract: front page image
(EN)

To reduce a torque drop caused by shift shock and time lag in a hybrid system.

In a hybrid system control method of the present invention, when the gear ratio of a transmission is upshifted, the torque of a motor is instantaneously increased when half clutch control of a clutch is started, and during half clutch control, the torque of the motor is controlled to be zero or minus to compensate for an increase in a vehicle drive torque resulting from rotational inertia of an engine. The torque of the motor is increased when the clutch is completely engaged and, after this increase of the torque, is attenuated by a predetermined time constant. When the gear ratio of the transmission is downshifted, the torque of the motor is increased when half clutch control of the clutch is started, and during half clutch control, the torque of the motor is attenuated by a predetermined time constant from the torque that was increased to compensate for a drop in the vehicle drive torque resulting from rotational inertia of the engine and is smoothly connected to a torque up amount at the time of complete engagement of the clutch.


Also published as:
EP2226228CN101903230WO/2009/081729