Method and apparatus for injecting fuel into the cylinders of an

Details Method and apparatus for injecting fuel into the cylinders of an Method and apparatus for injecting fuel into the cylinders of an

1992-06-03

1993-05-11

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

F02M 5100

Patent

active

052092054

ABSTRACT:
A method and apparatus for injecting fuel into the cylinders of an engine which has an injection valve for each cylinder that is positioned so that it can injection fuel into an open inlet port. The method and apparatus provide for fuel to be partially injected into a suction pipe leading to the cylinder before the corresponding intake-valve arrangement opens, so that it is stored in advance. Fuel is also partially injected into the open inlet port. A value which is a measure of the temperature in the suction pipe also is acquired. On the basis of this acquired value, the total required fuel quantity to be stored in advance is determined and to what extent this fuel quantity will be injected after the injection-valve arrangement opens. The method and apparatus avoid the formation of wall film in the suction pipe as a result of storing too much injected fuel in advance.

REFERENCES:
patent: 4915078 (1990-04-01), Sonoda et al.
patent: 4955339 (1990-09-01), Sasaki et al.
patent: 5068794 (1991-11-01), Itosoka

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