Cummins Electronics Company, Inc.

Other

James H Green

Richard Ling

Mark R Stepper

Gregory R White

Jeffrey P Seger

Douglas VanKlompenburg

John F Green, Jr

A method is provided for computing a stabilized vehicle speed value from a detected vehicle speed pulse signal and a detected engine speed signal, the vehicle speed value being for use by a vehicle speed control system. The method comprises several continuous cyclic steps commncing with generating a measured vehicle speed value from the detected vehicle speed pulse signal and generating a measured engine speed value from the detected engine speed signal. A current gear ratio is calculated from the measured vehicle speed value and the measured engine speed value. This current gear ratio is then passed through a single pole digital filter to filter changes in the gear ratio between consecutive cycles as a function of the current gear ratio and the gear ratio computed in the last preceding cycle of the computation. A current usable gear ratio is generated which is changed from the most recently generated usable gear ratio only if changes in the gear ratio exceed predetermined limit values. Otherwise the current usable gear ratio is unchanged from its most recently generated value. A stabilized predicted vehicle speed value is then computed from the measured engine speed and the current usable gear ratio for use by the vehicle speed control system. Slew rate limiting of the predicted vehicle speed is also provided by the method.

Method and device for computing a stabilized vehicle speed value from a

This invention provides a safety mechanism as an improvement to a bowstring release device and operative to prevent the accidental discharge of an arrow drawn in the bow. The safety mechanism disclosed comprises a slidable cam which is adapted to actuate a lock pin into a position to block the movement of a trigger member of the bowstring release device. When the safety mechanism is moved in the opposite direction, the lock pin is allowed to move away from the position blocking trigger movement under pressure of a biasing spring, thus freeing the trigger to operate.

Bowstring release safety mechanism

An electronic microcomputer based engine brake control device and a method for controlling an engine compression brake is disclosed. An algorithm for enabling engine brake operation includes monitoring a brake enable switch, engine RPM, engine fueling rate, cruise control or power takeoff system activation state, throttle position, manifold pressure and clutch pedal position. Engine brake operation is fully automatic and operates in a safe manner according to the disclosed algorithm.

Engine brake control apparatus and method

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Manhattan Beach, CA, United States of America

James H Green