Title:
FUEL VAPOR TREATMENT APPARATUS FOR ENGINE
Document Type and Number:
WIPO Patent Application WO/2020/017218
Kind Code:
A1
Abstract:
In the present invention, an intake passage 2 of an engine is provided with a throttle valve 22, a supercharger 3, and a bypass passage 25 that connects an upstream side and a downstream side of the supercharger 3 and that opens when the supercharger 3 is not operated. In the intake passage 2, forward advancing flows 91, 92 and bypass oriented flows 93, 94 occur when the supercharger 3 is not operated, the forward advancing flows being made up of intake air flowing from the throttle valve 22 toward the supercharger 3, and the bypass oriented flows being made up of intake air that has reversed direction due to forward advancement being obstructed by the supercharger 3 and that flows from the supercharger 3 toward a connection opening where the bypass passage 25 opens into the intake passage 2. A fuel vapor introducing opening 56 for directing fuel vapor generated in a fuel tank to the intake passage 2 is formed in a wall surface of the intake passage 2 where the bypass oriented flow 93 occurs.
Inventors:
KATO JIRO (JP)
YAMAUCHI TAKETOSHI (JP)
YOSHIDA KEN (JP)
TAKAMI KENJI (JP)
TANAKA KAZUAKI (JP)
ROKUYAMA KATSUYA (JP)
YAMAUCHI TAKETOSHI (JP)
YOSHIDA KEN (JP)
TAKAMI KENJI (JP)
TANAKA KAZUAKI (JP)
ROKUYAMA KATSUYA (JP)
Application Number:
PCT/JP2019/024020
Publication Date:
January 23, 2020
Filing Date:
June 18, 2019
Export Citation:
Assignee:
MAZDA MOTOR (JP)
International Classes:
F02M25/08
Domestic Patent References:
| WO2018173537A1 | 2018-09-27 | |||
| WO2019069434A1 | 2019-04-11 |
Foreign References:
| JP2018031352A | 2018-03-01 | |||
| JP2017223185A | 2017-12-21 | |||
| JP2015169124A | 2015-09-28 | |||
| JPS63162965U | 1988-10-25 | |||
| JPH0660734U | 1994-08-23 | |||
| JP2018031352A | 2018-03-01 |
Other References:
See also references of EP 3808965A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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