Title:
CONTROL DEVICE FOR LOCKUP CLUTCH
Document Type and Number:
WIPO Patent Application WO/2012/117880
Kind Code:
A1
Abstract:
When vehicle speed detected by a vehicle speed sensor (Sc) and acceleration pedal opening degree detected by an acceleration pedal opening degree sensor (Sd) are determined by a control area determination medium (M3) to be in a tire area of a lockup clutch, an engagement permission medium (M2) allows engagement of the lockup clutch to contribute to fuel efficiency improvement by increasing the frequency of the engagement of the lockup clutch within a range not affecting a function even though the water temperature of an engine coolant detected by a water temperature sensor (Sa) or the temperature of transmission working fluid detected by an oil temperature sensor (Sb) is below a predetermined temperature. Since engaging responsiveness does not matter much in the tire area where the lockup clutch is fully engaged, the lockup clutch causes no problems while engaged at a low temperature where the engaging responsiveness is lowered due to low oil temperature and high viscosity of the working fluid.
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Inventors:
MARUYAMA FUMIKAZU (JP)
YAMANAKA HIDEYUKI (JP)
YAMANAKA HIDEYUKI (JP)
Application Number:
PCT/JP2012/053960
Publication Date:
September 07, 2012
Filing Date:
February 20, 2012
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
MARUYAMA FUMIKAZU (JP)
YAMANAKA HIDEYUKI (JP)
MARUYAMA FUMIKAZU (JP)
YAMANAKA HIDEYUKI (JP)
International Classes:
F16H61/14
Foreign References:
| JPH03260463A | 1991-11-20 | |||
| JP2005030484A | 2005-02-03 | |||
| JP2005016616A | 2005-01-20 | |||
| JP2005016616A | 2005-01-20 |
Other References:
See also references of EP 2682647A4
Attorney, Agent or Firm:
OCHIAI Takeshi et al. (JP)
Ochiai 健 (JP)
Ochiai 健 (JP)
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Claims: