Internal-combustion engines – Noncompression
Patent
1975-03-04
1976-04-27
Burns, Wendell E.
Internal-combustion engines
Noncompression
123139AT, 239533, B05B 130, F02M 4700
Patent
active
039527115
ABSTRACT:
A fuel injector for a diesel engine for use with a common rail type universal fuel injection system includes an injection piston driven by the common rail pressure fluid to inject a metered quantity of fuel through an injection nozzle. The opening of the nozzle valve is controlled by a compression spring in a conventional manner. The nozzle closing is effected by the introduction of fuel at injection pressure above the nozzle valve which acts in combination with the spring to seat the valve. In the preferred embodiment, means are provided for connecting the nozzle spring chamber with the pumping chamber of the injection piston at or slightly before the end of delivery of injected fuel to the nozzle, thereby producing a sharp cutoff of fuel flow through the nozzle. The valve spring may accordingly be selected to provide an optimum opening force rather than to satisfy the nozzle closing requirements as heretofore necessary.
REFERENCES:
patent: 3587547 (1971-06-01), Hussey et al.
patent: 3625192 (1971-12-01), Dreisin
patent: 3752137 (1973-08-01), Kimberley
patent: 3796379 (1974-03-01), Fenne
patent: 3810453 (1974-05-01), Wolfe
patent: 3831863 (1974-08-01), Fenne
Kimberley John A.
Kraus Richard D.
Ambac Industries, Inc.
Burns Wendell E.
Cranson James W.
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