Evaporation fuel purge system
AssigneeHamanakodenso Co., Ltd.
InventorsHideya TOCHIHARA, Tetsunori INOGUCHI
Life of this patent
Estimating the term…
Abstract
An evaporation fuel purge system includes: a fuel tank; a canister that absorbs and desorbs evaporation fuel emitted from the fuel tank; an intake passage for an internal combustion engine in which the evaporation fuel desorbed from the canister is mixed with fuel for combustion; a purge passage that connects the canister to the intake passage; an ejector device disposed in the purge passage; and a fluid drive device. The ejector device has a nozzle part that accelerates external fluid. The fluid drive device sends outside air corresponding to the external fluid to flow into the nozzle part.
Claims7
An evaporation fuel purge system comprising:
- a fuel tank that stores fuel;
- a canister that absorbs evaporation fuel when evaporation fuel is emitted from the fuel tank, the canister being able to desorb the evaporation fuel;
- an intake passage for an internal combustion engine in which the evaporation fuel desorbed from the canister is mixed with fuel for combustion;
- a purge passage that connects the canister to the intake passage;
- an ejector device disposed in the purge passage and having
- a nozzle part that accelerates external fluid flowing into,
- a suction part that draws the evaporation fuel from the canister by a drawing force produced by the external fluid ejected from the nozzle part, and
- a diffuser part that emits a mixture of the external fluid ejected from the nozzle part and the evaporation fuel drawn from the suction part into the intake passage;
- and
- a fluid drive device that sends outside air corresponding to the external fluid to flow into the nozzle part.
Dependencies are inferred from the claim text.