US 6,205,977 B1 · Fuel injection control apparatus of multicylinder internal combustion engine

Abstract

To provide a fuel injection control apparatus of a multicylinder internal combustion engine capable of adjusting the quantity of fuel injection between cylinders by use of the fewest possible number of rheostats. The quantity of fuel to be injected into each cylinder of an internal combustion engine is calculated. Any one of a plurality of cylinders in the multicylinder internal combustion engine is selectively designated in accordance with an output of a first variable control section. An adjusting data indicating the amount of adjustment for the fuel injection quantity is generated in accordance with the output of a second variable control section and the quantity of fuel injection is corrected in accordance with the adjustment data when the fuel injection quantity corresponding to one cylinder designated in the mode of fuel adjustment between cylinders is calculated, so that only the corrected quantity of fuel injection will be injected to one cylinder thus designated.

Claims17

Dependent claims

A fuel injection control apparatus for controlling the quantity of fuel to be injected into each cylinder of a multicylinder internal combustion engine, comprising:

a fuel injection quantity calculating means for calculating the quantity of fuel to be injected into each cylinder of said internal combustion engine in accordance with engine operation parameters;
a cylinder designating means for selectively designating any one cylinder of said multicylinder internal combustion engine in accordance with an output of a first variable control device;
an adjustment quantity designating means for generating fuel adjusting data which indicate an amount of adjustment of fuel injection in accordance with an output of a second variable control device;
a fuel injection quantity correcting means for correcting the quantity of fuel to be injected in accordance with the fuel adjusting data generated by said adjustment quantity designating means;
and
a means for injecting into said one designated cylinder the corrected fuel quantity that has been corrected by said injection quantity correcting means.

3 more elements

A fuel injection control apparatus for controlling the quantity of fuel to be injected into each cylinder of a multicylinder internal combustion engine, comprising:

a fuel injection quantity calculating means for calculating the quantity of fuel to be injected into each cylinder of said internal combustion engine in accordance with predetermined engine operation parameters;
a cylinder designating means for selectively designating any one cylinder of said internal combustion engine in accordance with an output of a first variable control device;
an adjustment quantity designating means for generating fuel adjusting data for indicating the amount of adjustment of fuel injection in accordance with an output of a second variable control device;
and
means for injecting into said one designated cylinder the corrected fuel quantity that has been corrected based on said adjusting data.

2 more elements

Dependencies are inferred from the claim text.

Fuel injection control apparatus of multicylinder internal combustion engine

Life of this patent

Fuel injection control apparatus of multicylinder internal combustion engine

Life of this patent

Abstract

Claims17