Evaporated fuel treatment device of an engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsNaoya Takagi, Yoshihiko Hyodo, Toshimi Murai
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Abstract
An internal combustion engine, wherein fuel vapor adsorbed in a canister (22) is purged into a surge tank (13) through a purge control valve (28). A target value of the fuel vapor rate showing the ratio of the amount of fuel vapor in the purge gas to the amount of fuel injection is stored in advance. At least one of the amount of purge gas or the amount of fuel injection is controlled so that the fuel vapor rate becomes the target value.
Claims35
An evaporated fuel treatment device of an internal combustion engine provided with a purge passage for purging fuel vapor generated in a fuel tank into an intake passage;
- a purge control valve for controlling the amount of purge gas to be purged from the purge passage to the inside of the intake passage;
- an injection calculating means for calculating an amount of fuel injection;
- a setting means for setting a target value of a fuel vapor rate showing a ratio of the amount of fuel vapor in the purge gas to the amount of fuel injection;
- and a control means for controlling at least one of the amount of purge gas and the amount of fuel injection so that the fuel vapor rate become the target value.
An evaporated fuel treatment device of an internal combustion engine provided with a purge passage for purging fuel vapor generated in a fuel tank into an intake passage;
- a purge control valve for controlling the amount of purge gas to be purged from the purge passage to the inside of the intake passage;
- an injection calculating means for calculating an amount of fuel injection;
- a setting means for setting a target value of a purge gas rate showing a ratio of the amount of purge gas to the amount of fuel injection;
- and a control means for controlling at least one of the amount of purge gas and the amount of fuel injection so that the purge gas rate become the target value.
Dependencies are inferred from the claim text.