Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1993-03-03
1995-07-11
Koczo, Michael
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
477154, 477155, 475123, 475129, F16H 6106
Patent
active
054316081
ABSTRACT:
An automotive automatic transmission has a hydraulically operated clutch device and an electronic control unit. The clutch device includes drive and driven clutch plates and a piston for pressing the drive and driven clutch plates to establish an engagement therebetween when an oil chamber for the piston is fed with a certain amount of fluid. In order to control the clutch device, the following steps are employed, which are (a) issuing a first instruction signal to the clutch device; (b) feeding the oil chamber with the fluid by an amount which is sufficient for moving the piston from a rest position to a critical position which is ready for effecting the actual pressure against the drive and driven clutch plates; (c) issuing a second instruction signal to the clutch device; and (d) increasing the hydraulic pressure in the oil chamber to cause the piston to instantly establish the engagement between the drive and driven clutch plates.
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Jatco Corporation
Koczo Michael
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