Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1992-07-17
1993-04-13
Wright, Dirk
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
3644241, F16H 5948
Patent
active
052012514
ABSTRACT:
In an automatic transmission for a vehicle having at least one frictional engaging element and an electromagnetic valve to control hydraulic pressure supplied to the frictional engaging element and achieving a plurality of speed ratios including a predetermined speed ratio achieved by engaging the frictional engaging element, a shift control apparatus includes retardation rate detection means for detecting retardation rate of the vehicle and electromagnetic valve control means for controlling the electromagnetic valve according to the value detected by the retardation rate detection means, and hydraulic pressure supplied to the frictional engaging element is corrected by the electromagnetic valve through electromagnetic valve control means according to the retardation rate of the vehicle detected by the retardation rate detection means, thereby reducing speed-shift shocks during a down-shift in association with retardation of the vehicle.
REFERENCES:
patent: 5085104 (1992-02-01), Konno et al.
patent: 5103693 (1992-04-01), Hibi
patent: 5113718 (1992-05-01), Sato
patent: 5152192 (1992-10-01), Koenig et al.
Furuichi Yoichi
Kan Shoji
Kitagawa Takeshi
Taki Takahiro
Takuma Hiroshi
Mitsubishi Jidosha Kogyo Kabushiki Kaisha
Wright Dirk
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