Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1984-09-06
1985-09-10
Nelli, Raymond A.
Internal-combustion engines
Engine speed regulator
Idle speed control
123350, F02D 1110
Patent
active
045399557
ABSTRACT:
An idle speed control device is disclosed for an internal combustion engine controlled by a throttle wherein the device has a throttle stop positioning shaft for the throttle and a threaded drive gear that engages threads on the shaft and on turning in one direction retracts the shaft and connected throttle stop on turning in the opposite direction extends the shaft to a maximum throttle stop positioned where the gear disengages from the shaft and then can freewheel in the opposite direction without forcing further extension of the shaft. A conical spring received on the shaft has a small diameter end adapted to self-lock to the shaft and a large diameter end adapted to be engaged by the gear to compress the spring as the shaft is fully extended whereby the spring is loaded to forcibly re-engage the gear with the shaft when the gear is turned in the one direction to initiate retraction of the throttle stop when fully extended.
REFERENCES:
patent: 4212272 (1978-11-01), Hawk
patent: 4363303 (1981-08-01), Takayama
patent: 4395985 (1981-09-01), Hagen
patent: 4412517 (1981-04-01), Kobashi et al.
patent: 4436069 (1984-03-01), Collonia
Bock Gustavus P.
Wilson Robert E.
General Motors Corporation
Nelli Raymond A.
Phillips R. L.
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