Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1989-05-18
1991-05-07
Bonck, Rodney H.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74867, B60K 4108
Patent
active
050126997
ABSTRACT:
When a gearshift command for a power-on/downshift or power-off/upshift mode is issued, the magnitude of a change in the engine rotational speed due to the gearshift is calculated from the vehicle speed or the engine rotational speed when the gearshift starts to be effected and the gear ratio of a gear position to be reached by the gearshift. If the magnitude of the engine speed change is large, then a hydraulic control pressure is lowered for a certain period of time to advance the timing of operating of a hydraulic pressure release valve to quickly disengage a previous-gear-position clutch. If the magnitude of the engine speed change is small, then the control pressure is increased to delay the timing of operation of the hydraulic pressure release valve to allow the previous-gear-position clutch to be disengaged after a next-gear-position clutch starts to be engaged.
REFERENCES:
patent: 3832915 (1974-09-01), Hiramatsu
patent: 4274308 (1981-06-01), Iwanaga et al.
patent: 4445401 (1984-05-01), Ishimaru
patent: 4476747 (1984-10-01), Kawamoto
patent: 4495837 (1985-01-01), Morscheck
patent: 4685356 (1987-08-01), Iwatsuki
patent: 4713989 (1987-12-01), Hayakawa et al.
patent: 4748809 (1988-06-01), Sumiya et al.
patent: 4791568 (1988-12-01), Hiramatsu et al.
English translation summary of Japanese Appln. 61-189354 and 60-211152.
Aoki Takashi
Ozawa Shigeo
Sekine Noboru
Shimada Takamichi
Bonck Rodney H.
Honda Giken Kogyo Kabushiki Kaisha
Massey Ryan
LandOfFree
Apparatus for controlling gearshifts in automatic transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for controlling gearshifts in automatic transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for controlling gearshifts in automatic transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-932281