Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1976-02-09
1978-02-21
Dority, Jr., Carroll B.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123139DP, 417307, F02M 5902
Patent
active
040746682
ABSTRACT:
A piston-type injection pump for supplying fuel through a discharge conduit to an injector of an internal combustion engine. The injection pump has a relief piston movable between an upstream and a downstream position in a sleeve. This relief piston limits the rate of pressure drop in the discharge conduit. The sleeve has an annular groove and the relief piston is formed by at least one annular recess. A channel extends transversely through the relief piston at said annular groove. An axial blind channel terminates at said transverse channel. These two channels form part of the flow path for the fuel. The upper edge of either the annular groove or annular recess and the lower edge of the other define therebetween a maximum flow-through area for the fuel when the relief piston is in the upstream position. This maximum flow-through area is substantially equal to the cross-sectional flow-through area of the discharge conduit.
REFERENCES:
patent: 2090351 (1937-08-01), Heinrich et al.
patent: 2612841 (1952-10-01), Lasley
patent: 2918048 (1959-12-01), Aldinger et al.
patent: 3762386 (1973-10-01), Vuaille
Argenbright Tony M.
Dority Jr. Carroll B.
Vysoke uceni technicke
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