Title: Fuel systems for compression ignition engines

Abstract: A compression ignition engine is provided with the usual injection pump to deliver fuel to the engine cylinders. A constant vacuum carburettor is provided in the air inlet manifold of the engine to enable an alternative fuel to be mixed with the air flowing to the engine. The carburettor includes a jet and needle which are both movable to control the amount of alternative fuel supplied to the engine. The needle is controlled in accordance with the rate of air flow to the engine while the jet is controlled in accordance with the amount of fuel supplied by the injection pump to the engine.

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Inventors: Mowbray, Dorian F. (Burnham, GB)

Application Number: 889298
Filing Date: 1978-03-23
Publication_date: 1980-05-13
Assignee: Lucas Industries Limited (Birmingham, GB2)
Primary Class(es): 123/502 123/445, 261/44.4
Other Classes:
US Patent Ref:

2646265	Jul, 1953	Bareham et al.	261/44.
3174470	Mar, 1965	Von Seggern et al.	123/32.
3330543	Jul, 1967	Mennesson	261/44.
3443552	May, 1969	Von Seggern et al.	123/32.
3734473	May, 1973	Moriya et al.	261/44.
4080109	Mar, 1978	Green	123/139.

Other Refs: 966380231118

Apr, 1975	CA
Feb, 1944	CH

Primary Examiner: Lazarus, Ira S.
Assistant Examiner: Moy, Magdalen
Attorney: