Control system for internal combustion engine

Details Control system for internal combustion engine Control system for internal combustion engine

1997-08-05

1998-11-10

Nelli, Raymond A.

Internal-combustion engines

Combustion chamber means having fuel injection only

Having a particular relationship between injection and...

F02B 500

Patent

active

058328939

ABSTRACT:
In an intra-cylinder injection type engine, a first fuel cut-off starting rotational speed, a first return rotational speed and a first target idling speed in a compression stroke injection mode, which is superior in both combustion and responsivity, are set at lower speeds than a second fuel cut-off starting rotational speed, a second return rotational speed, and a second target idling speed in a suction stroke injection mode. During an operation in the compression stroke injection mode, a fuel cut-off mode and an idle running of the engine are practiced at a low engine speed, to improve the fuel economy without causing deterioration of combustion.

REFERENCES:
patent: 5305720 (1994-04-01), Ando et al.
patent: 5626115 (1997-05-01), Kawaguchi
patent: 5628290 (1997-05-01), Iida et al.
patent: 5699766 (1997-12-01), Saito
patent: 5720254 (1998-02-01), Yoshida et al.

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