US 5,832,901 A · Fuel injection control apparatus and method for an internal combustion engine

Abstract

A fuel injection control apparatus for an internal combustion engine includes an electronic control unit (23) which has a fuel injection information calculating section for periodically calculating fuel injection information according to the operation state of the engine, a temporary setting section for temporarily setting fuel injection information derived at specific timing prior to the actuation of the fuel injection valve in a desired operation cycle as fuel injection information in the desired operation cycle, and a correcting section for correcting the temporally set fuel injection information based on fuel injection information derived at a correction timing set later than the specific timing; and a fuel injection valve driving section (34) for driving the fuel injection valves (8) provided for the respective cylinders of the engine for each operation cycle of the engine based on the fuel injection information, to thereby effect more adequate fuel injection control based on the newest fuel injection information.

Claims43

Dependent claims

A fuel injection control apparatus for an internal combustion engine including fuel injection information calculating means for periodically calculating fuel injection information in accordance with an operation state of the internal combustion engine, the fuel injection information being used to operate fuel injection valves provided for cylinders of the internal combustion engine;

and fuel injection valve driving means for driving the fuel injection valves based on fuel injection information derived by the fuel injection information calculating means in association with operation cycles of the internal combustion engine, comprising:
setting means for setting fuel injection information derived by said fuel injection information calculating means at a specific timing before actuation of the associated fuel injection valve in a desired operation cycle, as fuel injection information in the desired operation cycle;
driving information outputting means for outputting driving information based on which the internal combustion engine is driven;
and
correction means for correcting at least part of the fuel injection information set by said setting means, the correction being made at a correction timing later than the specific timing in accordance with driving information which is output from said driving information outputting means.

2 more elements

A fuel injection control method for an internal combustion engine for periodically calculating fuel injection information in accordance with an operation state of the internal combustion engine, and for driving fuel injection valves provided for respective cylinders of the internal combustion engine based on the fuel injection information in association with operation cycles of the internal combustion engine, comprising:

a first step of setting fuel injection information derived at a specific timing in a desired operation cycle of the internal combustion engine as fuel injection information in the desired operation cycle;
a second step of correcting at least part of the fuel injection information set in said first step, at a correction timing which lags behind the specific timing in the desired operation cycle in accordance with driving information of the internal combustion engine;
and
a third step of driving the fuel injection valves in the desired operation cycle based on the fuel injection information corrected in said second step.

1 more element

Dependencies are inferred from the claim text.

Fuel injection control apparatus and method for an internal combustion engine

Life of this patent

Fuel injection control apparatus and method for an internal combustion engine

Life of this patent

Abstract

Claims43