Measuring and testing – Simulating operating condition – Marine
Reexamination Certificate
2007-01-30
2007-01-30
Cygan, Michael (Department: 2855)
Measuring and testing
Simulating operating condition
Marine
C073S049700
Reexamination Certificate
active
10926295
ABSTRACT:
An inside of an evaporated fuel processing system including a fuel tank is closed after changing an internal pressure of the evaporated fuel processing system to a target pressure value. After the closing, a diagnostic section variably sets a start timing for calculating a pressure change within the evaporated fuel processing system based on a timing when the internal pressure of the evaporated fuel processing system changes from the target pressure value to a peak pressure value. Then, a change amount between the respective internal pressure values detected by a detector at the set start timing and at a termination timing, which comes after the start timing, is calculated. The diagnostic section diagnose a leak within the evaporated fuel processing system based on the calculated change amount. Thus, the variably set start timing allows the diagnosis time to be shortened.
REFERENCES:
patent: 4532795 (1985-08-01), Brayman et al.
patent: 5396873 (1995-03-01), Yamanaka et al.
patent: 6289880 (2001-09-01), Yamaguchi et al.
patent: 2005/0022588 (2005-02-01), Hayakawa et al.
patent: 2001-041116 (2001-02-01), None
patent: 2003-056417 (2003-02-01), None
Copending application, being filed concurrently herewith (Aug. 26, 2004) entitled “Diagnostic Device of Evaporated Fuel Processing System and the Method Thereof” and claiming JP 304924 priority.
Copending U.S. Appl. No. 11/085,272, filed Mar. 22, 2005, entitled “Diagnostic Apparatus for Evaporative Emission Control System”, and claiming JP 2004-093477 priority.
Copending U.S. Appl. No. 10/926,296, filed Aug. 26, 2004 entitled “Diagnostic Device of Evaporated Fuel Processing System and the Method Thereof” and claiming JP 2003-304924 (copy previously submitted).
Copending U.S. Appl. No. 11/200,094 filed Aug. 10, 2005, entitled “Diagnostic Apparatus for Evaporative Emission Control System”, and claiming 2004-234648 priority.
Cygan Michael
Fuji Jukogyo Kabushiki Kaisha
Smith , Gambrell & Russell, LLP
LandOfFree
Diagnostic device of evaporated fuel processing system and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diagnostic device of evaporated fuel processing system and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diagnostic device of evaporated fuel processing system and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3722064