Title:
EVAPORATION FUEL TREATMENT DEVICE
Document Type and Number:
Japanese Patent JP2022074666
Kind Code:
A
Abstract:
To early recover adsorption performance by improving desorption performance of each of a first canister and a second canister in an evaporation fuel treatment device having the first canister adsorbing evaporation fuel during refueling and the second canister adsorbing evaporation fuel during parking.SOLUTION: An evaporation fuel treatment device includes: a three-way valve 52 opening a first vapor passage 50 communicated with a first canister 30 from a fuel tank 13 during refueling and opening a second vapor passage 54 communicated with a second canister 40 from the fuel tank 13 during parking; and a purge valve 62 opening both purge passages 60, 64 communicated with an intake passage 15 from both of the canisters 30, 40 during purge. The evaporation fuel treatment device also includes: a first heater 76 capable of heating a first adsorbent 32 of the first canister 30; and a second heater 78 capable of heating a second adsorbent 42 of the second canister 40. A temperature of the first adsorbent 32 heated by the first heater 76 is higher than that of the second adsorbent 42 heated by the second heater 78.SELECTED DRAWING: Figure 1
Inventors:
AKIYAMA TAKANORI
Application Number:
JP2020184906A
Publication Date:
May 18, 2022
Filing Date:
November 05, 2020
Export Citation:
Assignee:
AISAN IND
International Classes:
F02M25/08
Attorney, Agent or Firm:
Okada International Patent Office