Revolution Control Apparatus for an Internal Combustion Engine, and Internal Combustion Engine Provided with That Revolution Control Apparatus
First Claim
1. A revolution control apparatus of an internal combustion engine that performs engine revolution feedback control in which an engine revolution of the internal combustion engine, which has a plurality of cylinders, is detected and the fuel injection amount from fuel injection means is controlled so that the detected engine revolution approaches a target revolution, comprising:
- revolution calculation and storage means for calculating, from a time that is required for a crank shaft to rotate by a predetermined angle from a compression upper dead center of each cylinder, the engine revolution in an expansion stroke of that cylinder, and storing this in association with that cylinder number; and
feedback revolution switching means that, in determining the fuel injection amount based on the engine revolution that has been associated with that cylinder number and the target revolution, feeds back a revolution that is obtained by retroactively averaging the stored revolutions from the cylinder immediately prior to a cylinder before the cylinder that is immediately prior as the engine revolution, and calculates a feedback revolution by switching the number of retroactive cylinders according to an operation state of said internal combustion engine.
2 Assignments
0 Petitions
Accused Products
Abstract
An engine revolution in an expansion stroke of a cylinder is calculated, and stored, from a time that is required for a crank shaft to rotate by a predetermined angle from a compression upper dead center of that cylinder, and to determine the fuel injection amount, in averaging these stored revolutions from the cylinder immediately prior to a cylinder before the cylinder that is immediately prior to obtain a revolution that serves as the engine revolution, how many past cylinders are retroactively averaged is switched according to the engine operation state.
-
Citations
12 Claims
-
1. A revolution control apparatus of an internal combustion engine that performs engine revolution feedback control in which an engine revolution of the internal combustion engine, which has a plurality of cylinders, is detected and the fuel injection amount from fuel injection means is controlled so that the detected engine revolution approaches a target revolution, comprising:
-
revolution calculation and storage means for calculating, from a time that is required for a crank shaft to rotate by a predetermined angle from a compression upper dead center of each cylinder, the engine revolution in an expansion stroke of that cylinder, and storing this in association with that cylinder number; and
feedback revolution switching means that, in determining the fuel injection amount based on the engine revolution that has been associated with that cylinder number and the target revolution, feeds back a revolution that is obtained by retroactively averaging the stored revolutions from the cylinder immediately prior to a cylinder before the cylinder that is immediately prior as the engine revolution, and calculates a feedback revolution by switching the number of retroactive cylinders according to an operation state of said internal combustion engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification