Internal-combustion engines – Noncompression
Patent
1976-10-01
1979-03-13
Jordan, Charles T.
Internal-combustion engines
Noncompression
123 32EA, F02B 302
Patent
active
041436210
ABSTRACT:
A fuel injection system for a spark ignited, internal combustion engine employs sensors which measure engine operating parameters to control the duration of actuating pulses applied to at least one fuel injector. One of the sensors measures engine temperature and the pulse duration is increased at lower engine temperatures to compensate for the lower volatility of the fuel at such lower temperatures. The output of a manifold vacuum sensor is differentiated to derive a signal proportional to the rate of increase of engine load and that is used in combination with the engine temperature sensor to increase the duration of an injector actuating pulse in amounts proportional to the rate of increase of engine load. The amount of increase in duration of the pulse varies inversely with engine temperature. This allows the enrichment of the fuel charge which normally occurs as an inverse function of engine temperature to be maintained at a level which may produce a leaner steady state air to fuel ratio during engine warm-up and to provide additional enrichment of the fuel charge during periods of increase transient engine load to provide reduced exhaust emissions during warm-up without stalling.
REFERENCES:
patent: 3504657 (1970-04-01), Eicher et al.
patent: 3566846 (1971-03-01), Glockler
patent: 3971354 (1976-07-01), Luchaco et al.
Allied Chemical Corporation
Criss Roger H.
Jordan Charles T.
Kashimba Paul T.
Kirby John P.
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