Injection system for a dual-fuel engine

Details Injection system for a dual-fuel engine Injection system for a dual-fuel engine

1988-02-24

1989-09-12

Nelli, Raymond A.

Internal-combustion engines

Combustion chamber means having fuel injection only

Injecting diverse fuels or different states of same fuel

123276E, F02M 4300

Patent

active

048649902

ABSTRACT:
An injection system for a dual-fuel diesel engine operated by means of a main fuel having a low cetane number and an auxiliary fuel having a high cetane number is disclosed. The injection system includes a pressure regulating check valve provided in parallel to a delivery valve in a main fuel injection pump and allowing fuel flow only in a direction opposite to that in the delivery valve. A control valve feeds the auxiliary fuel pressurized by a fuel feed pump to a fuel injection valve at an appropriate feed rate and at appropriate fuel feed timing regulated by a control device. A check valve is provided in the proximity of a fuel reservoir of the fuel injection valve in a flow passageway of the auxiliary fuel.

REFERENCES:
patent: 1132581 (1915-03-01), Hein
patent: 4583508 (1986-04-01), Scheeter
patent: 4597364 (1986-07-01), Young
patent: 4632083 (1986-12-01), Reggiani
patent: 4699103 (1987-10-01), Tsukahara et al.
patent: 4700672 (1987-10-01), Baguena
patent: 4754733 (1988-07-01), Steiger

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