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Patent Searching and Data


Title:
CREEP TORQUE CONTROL DEVICE FOR VEHICLE
Document Type and Number:
Japanese Patent JP2012057708
Kind Code:
A
Abstract:

To provide a creep torque control device for a vehicle capable of controlling creep torque accurately and with high responsiveness according to braking force acting to the vehicle and of thus achieving reduction of fuel consumption and wear suppression of a clutch sufficiently.

Normal time creep torque characteristics A to D for reducing target creep torque with an increase of clutch rotation speed Nc and for reducing the target creep torque with an increase of brake fluid pressure are previously stored as a map. Then, by calculating the clutch rotation speed Nc and the target creep torque from the brake fluid pressure based on the map, the target creep torque is immediately increased and decreased when the clutch rotation speed Nc or the brake fluid pressure is changed, which is reflected on half clutch control of the clutch.


Inventors:
KUMAZAWA ATSUSHI
MIZUNO TOSHIO
Application Number:
JP2010201111A
Publication Date:
March 22, 2012
Filing Date:
September 08, 2010
Export Citation:
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Assignee:
DAIMLER AG
International Classes:
F16D48/02
Domestic Patent References:
JP2004116748A2004-04-15
JP2005337432A2005-12-08
JP2003264905A2003-09-19
JP2004197934A2004-07-15
JP2004248499A2004-09-02
JP2004116748A2004-04-15
Attorney, Agent or Firm:
Koji Nagato