Fuel injection pump for internal combustion engines

Details Fuel injection pump for internal combustion engines Fuel injection pump for internal combustion engines

1993-11-05

1995-04-04

Miller, Carl S.

Internal-combustion engines

Charge forming device

With fuel pump

123495, 123 9061, F02M 3704

Patent

active

054027640

ABSTRACT:
A fuel injection apparatus for internal combustion engines, having a pump piston, which is guided in a cylinder bore and driven to reciprocate by a cam drive. The pump piston defines a pump work chamber with its face end. The pump work chamber communicates with an injection valve via a pressure conduit and is supplied with fuel and relieved via a fuel line. The cam drive acts upon the pump piston via a rocker bolt, a tappet bolt, and a tappet insert, and the connections from the tappet bolt to both the rocker bolt and the tappet insert are embodied in the manner of ball joints. For simple installation of the tappet bolt, it is axially secured in relation to the rocker and to a tappet sleeve, which receives the tappet insert, via securing elements having elastic stretching properties, which expand to the size of the outer diameter of the ball head when a certain force is exerted, so that the tappet bolt can be installed and removed without disassembling the whole pump.

REFERENCES:
patent: 2897805 (1959-08-01), Etzler
patent: 4206734 (1980-06-01), Perr
patent: 4407241 (1983-10-01), Butler
patent: 4531672 (1985-07-01), Smith
patent: 4794894 (1989-01-01), Gill
patent: 4864983 (1989-09-01), Breitbarth
patent: 4957090 (1990-09-01), Rathmayr
patent: 4966108 (1990-10-01), Bentz
patent: 5102047 (1992-04-01), Rossignol
patent: 5320278 (1994-06-01), Kolarik

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