Two-fuel injector apparatus for an internal combustion engine

Details Two-fuel injector apparatus for an internal combustion engine Two-fuel injector apparatus for an internal combustion engine

1987-03-11

1987-10-20

Cox, Ronald B.

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

123304, F02M 4502

Patent

active

047006722

ABSTRACT:
An injector apparatus for an internal combustion engine and suitable for injecting two different fuels, namely a "pilot injection" liquid fuel and a "main injection" liquid or gaseous fuel comprising a low-pressure pump (1B) for pilot injection fuel feed, a high-pressure pump (1A) of the injection pump type, two fuel injectors, and a metering pump (30) selectively connecting the low-pressure pump, the high-pressure pump, and the two fuel injectors. The metering pump (30) includes a transfer piston (2) and two abutments (3, 4) which are independently adjustable so as to vary the relative importance of pilot injection and of main injection and also vary the extent to which the two injection stages overlap.

REFERENCES:
patent: 4033314 (1977-07-01), Walton
patent: 4201160 (1980-05-01), Fenne
patent: 4520774 (1985-06-01), Sitter
patent: 4522174 (1985-06-01), Babitzka
patent: 4530337 (1985-07-01), Laufer
patent: 4590904 (1986-05-01), Wannenwetsch

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