Control apparatus for internal combustion engine
AssigneesToyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha
InventorsKoichi Kimura, Yoshiyuki Tanaka, Katsutoshi Tanei, Tomoyuki Uchiyama
Life of this patent
Estimating the term…
Abstract
A control apparatus for an internal combustion engine according to the invention obtains a first index that indicates the amount of fuel adhering to the wall surface of an intake passage, using intake valve timing; obtains a correction value that reduces the first index, using exhaust valve timing and the intake valve timing; and calculates a second index that indicates the amount of fuel adhering to the wall surface of the intake passage, using the correction valve. The control apparatus controls the amount of fuel to be injected based on at least one of the first index and the second index.
Claims15
A control apparatus for an internal combustion engine, comprising:
- a calculation portion which obtains a first index that indicates an amount of fuel adhering to a wall surface of an intake passage, using intake valve timing, based on a first relation that is set between the intake valve timing and the first index under a condition that exhaust valve timing is fixed;
- obtains a correction value that reduces the first index, using the exhaust valve timing and the intake valve timing, based on a second relation that is set among the exhaust valve timing, the intake valve timing and the correction value under a condition that the exhaust valve timing is not fixed;
- and
- calculates a second index that indicates the amount of fuel adhering to the wall surface of the intake passage, by correcting the first index using the correction value,
- a control portion which controls an amount of fuel to be injected based on at least one of the first index and the second index.
Dependencies are inferred from the claim text.