×

Fuel vapor treatment apparatus

  • US 20060225713A1
  • Filed: 04/06/2006
  • Published: 10/12/2006
  • Est. Priority Date: 04/08/2005
  • Status: Active Grant
First Claim
Patent Images

1. A fuel vapor treatment apparatus comprising:

  • a first canister for adsorbing fuel vapor produced in a fuel tank in such a way that the fuel vapor can be desorbed;

    a purge passage for introducing an air-fuel mixture containing fuel vapor desorbed from the first canister into an intake passage of an internal combustion engine and for purging the fuel vapor;

    a detection passage for causing the first canister to connect with atmosphere;

    a gas flow producing means arranged in the detection passage and for producing a gas flow;

    a second canister interposed between the first canister and the gas flow producing means and for adsorbing fuel vapor in the air-fuel mixture in such a way that the fuel vapor can be desorbed; and

    a pressure detecting means provided between the first canister and the gas flow producing means and for detecting a pressure when the gas flow producing means produces a gas flow;

    wherein flow rate of purge is adjusted on the basis of pressure detected by the pressure detecting means.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×