Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1977-02-22
1978-10-17
Peters, Jr., Joseph F.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
123102, B60K 3100
Patent
active
041203739
ABSTRACT:
A motor drives a fuel supply control element, typically the throttle of an automotive-type gasoline engine through a solenoid controlled coupling. Upon brake, clutch, manual switch, or other interrupting operation, the solenoid is de-energized so that a spring can permit interruption of the coupling and a throttle return spring can return the throttle to idle position. To prevent dangerous conditions from arising, and run-away of the engine in case of malfunction of the coupling, an electronic circuit is provided to introduce a signal to the speed control system which tends to move the throttle positioning motor to change the position of the throttle to idle speed condition if a disabling signal is sensed. Preferably, additionally, a first timing circuit interrupts energization of the positioning motor servo loop after a predetermined period of time; a second timing circuit may be provided which has a time constant which is long with respect to the return time of the throttle under its spring connection and controlling a malfunction memory which provides a visual indication of malfunction in the system.
REFERENCES:
patent: 3612017 (1971-10-01), Ishizaki
patent: 3715006 (1973-02-01), Walsh
Peters Jr. Joseph F.
Robert & Bosch GmbH
Siemens Terrance L.
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