Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1996-11-20
1998-05-12
Elms, Richard T.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
180287, 34082569, 290 38C, 1231792, B60R 2504
Patent
active
057510733
ABSTRACT:
A motor vehicle has a detector for detecting the presence of a valid radio frequency transmitter only within a seating space inside the vehicle. Start control circuitry is responsive to a RUN signal, provided that the detector has detected the presence of a valid radio frequency transmitter within the seating space, to unlock a steering column lock, activate an engine electric power circuit and a start motor, repeatedly receive an engine speed signal from the engine speed signal generator and compare the received engine speed signal to a predetermined speed reference indicating engine starting. The start motor is deactivated and a park lock solenoid is activated when the engine speed signal exceeds the speed reference. Alternatively, the engine electric power circuit and start motor are deactivated and the column lock is locked if the engine speed signal does not exceed the speed reference within a first predetermined time. Engine deactivation occurs responsive to an OFF signal during engine operation to deactivate the engine electric power circuit and activate the detector; and an accessory control is responsive to engine deactivation, if a valid transmitter is detected, to activate the accessory circuit for a predetermined time or until the driver door is opened, whichever occurs first, and suspend activation of the detector for the duration of the activation of the accessory circuit. A vehicle access control may be responsive to the same transmitter by way of a first antenna mounted on the vehicle body for communication with the transmitter outside the body while the detector has a second antenna associated with the driver seat for communication with the transmitter only within the seating space.
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Elms Richard T.
General Motors Corporation
Sigler Robert M.
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