Internal-combustion engines – Engine speed regulator – Having condition responsive means with engine being part of...
Patent
1978-12-11
1981-07-28
Lall, P. S.
Internal-combustion engines
Engine speed regulator
Having condition responsive means with engine being part of...
123349, F02D 1108
Patent
active
042804604
ABSTRACT:
For the automatic adjustment of the number of revolutions per minute of an internal combustion engine in idling conditions when the accelerator pedal is released, a device is disclosed with which the instantaneous rpm is sensed and compared with reference values of the number of revolutions, called N.sub.1, N.sub.2 and N.sub.3, wherein N.sub.2 is smaller than N.sub.3 but equal to, or greater than, N.sub.1. These reference values can be used to preset an electronic comparison circuit, or the comparison can be effected by exploiting a mechanism comprising a metering pump, the result being always that when the rpm of the engine is below the preselected minimum, the feed of fuel to the engine is supplemented, whereas it is reduced or cut off if the situation is the contrary, that is when the engine tends to overtake the normal idling rpm.
REFERENCES:
patent: 3253772 (1966-05-01), Parker
patent: 3659499 (1972-05-01), Woodward
patent: 3861490 (1975-01-01), Sakakibara
patent: 3921751 (1975-11-01), Sakakibara et al.
patent: 3964457 (1976-06-01), Coscia
patent: 4133408 (1979-01-01), Riddel
Bassi Aldo
Radaelli Dario
Rogora Edoardo
Alfa Romeo S.p.A.
Brown Charles E.
Lall P. S.
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