Interrelated power delivery controls – including engine control – Transmission control – With brake control
Patent
1996-06-28
1998-04-21
Ta, Khoi Q.
Interrelated power delivery controls, including engine control
Transmission control
With brake control
477 71, 477114, 477901, B60K 4120
Patent
active
057412006
ABSTRACT:
The invention provides a control apparatus for an automatic transmission for carrying out neutral control and hill-hold control in a range that causes no slip of a hill-hold brake. The control apparatus has a judgment unit for determining, in accordance with a signal output by a gradient detector whether an uphill road is steep enough to cause a hill-hold brake to slip with the hill-hold brake engaged, a hydraulic pressure reducing device for reducing the hydraulic pressure applied to a hydraulic servo of a clutch in order to place the clutch in an all but released state, a hydraulic pressure applying device for applying a hydraulic pressure to a hydraulic servo of a brake in order to engage the brake, and an execution unit for permitting the hydraulic pressure reducing device to reduce the hydraulic pressure applied to the hydraulic servo and the hydraulic pressure applying device to apply a hydraulic pressure to the hydraulic servo only if a stop, or halted, state is detected by a stop-state detector and an uphill road is determined by the judgement unit not to be steep enough to cause the hill-hold brake to slip.
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Hayabuchi Masahiro
Kusafuka Muneo
Nishida Masaaki
Nishimura Junichi
Taniguchi Takao
Aisin Aw Co. Ltd.
Kwon Peter T.
Ta Khoi Q.
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