Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control
Patent
1997-09-16
2000-09-19
Cuchlinski, Jr., William A.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Transmission control
477 34, 477156, 477116, 477117, 477158, 477163, 477 97, 701 53, G06G 770, B60K 4108
Patent
active
061225827
ABSTRACT:
In a control device for an automatic transmission which holds a line pressure solenoid of an automatic transmission in a stationary ON state while an engine is in a stop state, when a key switch is switched ON, "stationary ON control device" supplies a high voltage to the line pressure solenoid for a short time so as to over-excite it, and a holding magnetization of the line pressure solenoid is then maintained by a low voltage. Subsequently, if it is determined by engine rotation speed detection device that a cell motor is being driven, ordinary control is performed wherein an over-excitation, holding magnetization and OFF cycle is repeated. Further, when a battery voltage drops while the cell motor is being driven so that the line pressure solenoid with holding magnetization switches OFF, recovery device rapidly restores the solenoid to the normal stationary ON state by performing intermittent over-excitation.
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patent: 5612874 (1997-03-01), Schulz et al.
patent: 5769753 (1998-06-01), Kusafuka et al.
patent: 5801499 (1998-09-01), Tsuzuki et al.
patent: 5873803 (1999-02-01), Geon
Cuchlinski Jr. William A.
Hernandez Olga
Jatco Corporation
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