B - Operations – Transporting – 60 – K
Patent
B - Operations, Transporting
60
K
341/86, 341/94
B60K 31/00 (2006.01) B60K 31/04 (2006.01) F02D 31/00 (2006.01) F02P 17/04 (2006.01)
Patent
CA 1217837
ABSTRACT OF THE DISCLOSURE An electronic circuit for disengaging an electronic speed control system when the rate of change of the automobile engine speed exceeds a predetermined amount is disclosed. A ferrite or powdered iron ring current transformer generates an input signal to the electronic circuit from one of the spark plug wires in the engine. The pulses from the ring current transformer are passed through a monostable multivibrator circuit and a filter network to a differentiator. The output of the differentiator is connected to a high limit detector and a low limit detector. When the rate of change of engine speed exceeds a predetermined amount, a signal is generated to disengage the speed control circuit.
449625
Dana Corporation
Ridout & Maybee Llp
LandOfFree
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