Fuel injection piston and method of its manufacture

Details Fuel injection piston and method of its manufacture Fuel injection piston and method of its manufacture

1973-12-05

1976-01-06

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02F 328

Patent

active

039304825

ABSTRACT:
A piston for a fuel injection pump for use in internal combustion engines and its method of manufacture is described. The piston is reciprocated and rotated within a cylinder having a fuel supply opening. The piston has an upper control edge determining initiation of fuel injection and a lower control edge determining initiation of fuel injection and a lower control edge determining termination of fuel injection as the edges move past the fuel supply opening. In its improvement the piston is manufactured to provide a notch in its upper end surface which, at the intersection of the notch with the circumferential surface of the piston, forms at least two upper control sections serving at least as a part of the upper control edge. The two control edge sections have relatively different inclinations with respect to the upper end surface of the piston which effects the fuel injection.

REFERENCES:
patent: 1966694 (1934-07-01), Vaudet et al.
patent: 2225019 (1940-12-01), Retel
patent: 2356511 (1944-08-01), Poeoyrtis
patent: 2696807 (1954-12-01), Junge et al.
patent: 2810375 (1957-10-01), Froehlich et al.

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