Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Reexamination Certificate
2009-05-01
2011-10-11
Moulis, Thomas N (Department: 3747)
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
C073S114390
Reexamination Certificate
active
08033271
ABSTRACT:
A diagnostic device for a fuel vapor treatment system having: a canister that captures fuel vapor generated in a fuel tank; a purge passage for purging fuel vapor from the canister to an intake passage of an internal combustion engine; a purge valve provided in the purge passage to adjust a flow rate of fuel vapor; a processing device that depressurize an fuel vapor path extending from the fuel tank to the purge valve via the canister by a pump and performs a diagnostic processing for diagnosing a leak of fuel vapor from the fuel vapor path based on a change in pressure in the fuel vapor path during depressurization; and an angle detection device that detects an angle of inclination of the vehicle. The processing device determines, based on an inclination angle of the vehicle detected by the angle detection device, whether the diagnostic processing can be performed.
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Gifford Krass Sprinkle Anderson & Citkowski P.C.
Moulis Thomas N
Toyota Jidosha & Kabushiki Kaisha
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