Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1992-04-21
1993-02-16
Nelli, Raymond A.
Internal-combustion engines
Engine speed regulator
Idle speed control
417 34, F02M 300
Patent
active
051861429
ABSTRACT:
The idling system reduces the speed of an engine having a speed governor that is used to power an air compressor, a pressure washer, or another load device which outputs pressurized gases or fluids. The idling system includes a pressure or flow switch which is activated in response to a sensed pressure or fluid flow respectively in the load device. When the switch is activated, an electromagnet is energized through a diode rectifier by the engine alternator or other power source. The energizing of the electromagnet creates a magnetic field that attracts a governor lever arm on the engine's mechanical speed governor. Since the lever arm is interconnected with the throttle plate of the engine carburetor, movement of the lever arm rotates the throttle plate to reduce the engine speed to an idle speed.
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Engine Control Devices Idling System for Air Compressors, Sold at Least as Early as Dec. 1, 1989.
United Electric Controls Company Catalog, pp. 4-5 Regarding Type H100 Pressure Switches, Published in 1990.
Delaval Turbine, Inc. Flow Switches, described in "Machine Design", Electrical & Electronics 1978 Reference Issue, p. 145, Pub. May 18, 1978.
Cat Pumps Idling System for Pressure Washers, Sold at Least as Early as Aug. 1989.
Brunelli Brian
Fiorenza, II John A.
Briggs & Stratton Corporation
Nelli Raymond A.
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