Diesel engine fuel limiting system

Details Diesel engine fuel limiting system Diesel engine fuel limiting system

1982-06-21

1984-01-31

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

123350, 123458, 123571, 123494, 123489, 123440, F02M 2506

Patent

active

044283547

ABSTRACT:
A fuel limit controller includes a computer supplying a commanded absolute EGR control pressure that is a measure of fuel supplied per diesel engine revolution. An absolute EGR control pressure equal to the commanded absolute pressure is generated from a subatmospheric pressure source and atmospheric air so that the absolute EGR control pressure is limited to atmospheric pressure. Fuel per engine revolution is limited to the value represented by the absolute EGR control pressure so that the fuel limit is automatically compensated for altitude variations. The rate of change in the fuel limit in response to changes in the absolute EGR control pressure is limited to delay increases in fuel to match the time to purge excess exhaust gases from the engine intake manifold.

REFERENCES:
patent: 3916854 (1975-11-01), Barton
patent: 4249374 (1981-02-01), Sugasawa et al.
patent: 4300516 (1981-11-01), Hayakawa
patent: 4304210 (1981-12-01), Hayakawa
patent: 4359032 (1982-11-01), Obie
patent: 4372266 (1983-02-01), Hiyama et al.
patent: 4385610 (1983-05-01), Le Blanc
Same Paper 790899 "Standyne DB2 Distributer Pump for Medium Duty Diesels" by Hess and Salzgeber Sep. 10-13, 1979.

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