Title:
FUEL INJECTION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP3185637
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the air fuel ratio control accuracy at the mode switching time by providing an intake non-synchronization injection mode in which a fuel injection is carried out before an intake process and an intake synchronization injection mode in which the fuel injection is carried out during the intake process and correcting a fuel injection amount based on a correction amount map attached on a wall surface at the injection mode switching time.
SOLUTION: ECU 70 for inputting the output signal from a throttle opening sensor 42, O2 sensor 45 and a crank angle sensor 51 calculates a fuel injection amount by which a target air fuel ratio is acheived based on the intake air amount per one rotation of an engine and energizes a fuel injection valve 60 at the point of time reached a prescribed crank angle. In this case, an operation is controlled by switching an intake non-synchronization injection mode in which a fuel injection is carried out before an intake process and an intake synchronization injection mode in which the fuel injection is carried out during the intake process and the fuel injection amount is corrected based on a correction amount map attached on a wall surface, when the switching of an injection mode is carried out by an injection mode switching means at the steady operation time. Thereby, the storm of an air fuel ratio at the mode switching time is prevented.
Inventors:
Genki Ohtani
Application Number:
JP29139995A
Publication Date:
July 11, 2001
Filing Date:
November 09, 1995
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02D41/04; F02D41/34; (IPC1-7): F02D41/04
Domestic Patent References:
| JP5202783A | ||||
| JP5125983A | ||||
| JP8158913A |
Attorney, Agent or Firm:
Takashi Ishida (3 others)