Fuel injection apparatus for internal combustion engines

Details Fuel injection apparatus for internal combustion engines Fuel injection apparatus for internal combustion engines

1993-10-01

1994-07-05

Miller, Carl S.

Internal-combustion engines

Charge forming device

With fuel pump

123449, F02M 3704

Patent

active

053258371

ABSTRACT:
A fuel injection apparatus for internal combustion engines comprising a pump work chamber defined in a bore of a housing by a pump piston. The pump work chamber is supplied with fuel and relieved via a fuel line containing a magnet control valve. Moreover, the pump work chamber communicates with an injection valve via a supply line. Controlling of the injection is done via the opening or closing of the magnet control valve during the pumping stroke of the pump piston; to that end, the magnet valve is triggered by a control unit. To enable performing an accurate injection, a needle stroke transducer is disposed on the nozzle needle of the injection valve; if a limit value is exceeded, its stroke motion is detected as a precise signal for the onset and end and hence the size of the injection quantity and is transmitted to the control unit, where this actual value is compared with a set-point value from a performance graph, and a correction of the magnet valve triggering is consequently done performed, if needed.

REFERENCES:
patent: 2856482 (1982-08-01), Linder
patent: 4359032 (1982-11-01), Ohie
patent: 4438496 (1984-03-01), Ohie
patent: 4576129 (1986-03-01), Wallenfang
patent: 4594979 (1986-06-01), Yasuhara
patent: 4788960 (1988-12-01), Oshizawa
patent: 4884549 (1989-12-01), Kelly
patent: 5070836 (1991-12-01), Wahl
patent: 5080076 (1992-01-01), Eckert
patent: 5205262 (1993-04-01), Anton
patent: 5273017 (1993-12-01), Braun

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