Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Reexamination Certificate
2007-01-19
2008-10-28
Moulis, Thomas N (Department: 3747)
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
C701S114000, C361S153000
Reexamination Certificate
active
07441550
ABSTRACT:
For the purposes of a determination of a fuel vapor loading level of a fuel vapor retention system of a combustion engine, an opening level of a valve of the fuel vapor retention system is increased in steps or continuously during a determination phase. Furthermore, the valve is activated at most a predefined first period prior to a start of the determination phase by a conditioning pulse at least whenever the valve was closed previously for a second period that is longer than a predefined threshold value. The conditioning pulse is generated in such a way that the valve definitely opens at most for a predefined opening period and then closes again.
REFERENCES:
patent: 4683861 (1987-08-01), Breitkreuz et al.
patent: 4764729 (1988-08-01), Yakuwa et al.
patent: 4865000 (1989-09-01), Yajima
patent: 4870364 (1989-09-01), Trox et al.
patent: 5243296 (1993-09-01), Ando et al.
patent: 5351193 (1994-09-01), Poirier et al.
patent: 5623914 (1997-04-01), Kawamoto et al.
patent: 5727532 (1998-03-01), Everingham et al.
patent: 5873350 (1999-02-01), Wild et al.
patent: 5921224 (1999-07-01), Sinnamon
patent: 5959825 (1999-09-01), Harcombe
patent: 6148804 (2000-11-01), Blomquist et al.
patent: 6283095 (2001-09-01), Krueger
patent: 6364281 (2002-04-01), DeLand et al.
patent: 6394414 (2002-05-01), Breitling et al.
patent: 6516786 (2003-02-01), Krimmer et al.
patent: 6966325 (2005-11-01), Erickson
patent: 7096113 (2006-08-01), Ludwig et al.
patent: 42 18 541 (1993-12-01), None
patent: 44 27 688 (1998-07-01), None
patent: 10 2004 022 999 (2005-12-01), None
Van Basshuysen/Schäfer; “Handbuch Verbrennungsmotor”; Grundlagen, Komponenten, Systeme, Perspektiven; Siemens VDO Automotive; 2002; pp. 604-607; Vieweg Verlag.
Ludwig Wolfgang
Mai Wolfgang
Pache Jens
Bell Boyd & Lloyd LLP
Moulis Thomas N
Siemens Aktiengesellschaft
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