Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Indication or control of braking – acceleration – or deceleration
Reexamination Certificate
2005-03-22
2005-03-22
Nguyen, Tan Q. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Indication or control of braking, acceleration, or deceleration
C701S104000, C701S110000, C123S335000
Reexamination Certificate
active
06871132
ABSTRACT:
A vehicle control unit is disclosed which can be coupled between a tachometer sensor and an electronic ignition system on a vehicle. The unit is also coupled to a speedometer sensor to measure the vehicle's speed. The vehicle control unit limits the vehicle speed by monitoring the tachometer signal from the tachometer sensor and passing the tachometer signal to the ignition system if the engine speed is within predetermined limits. The tachometer signal is a pulse train which is used by the electronic ignition system to determine ignition timing. The vehicle control unit limits both vehicle speed and engine speed by disconnecting pulses from the tachometer sensor and generating time-delayed pulses of its own to delay the combustion of fuel until after the instance of maximum fuel compression, thereby reducing engine power when the vehicle or engine speeds exceed predetermined limits.
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Jurok Jason A.
Olsen Stuart W.
Silvernagle Darin R.
Conley & Rose, P.C.
Nguyen Tan Q.
Vertias DGC Inc.
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