Device for determining a mass flow of a first gas within an...

Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy

Reexamination Certificate

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C073S861040

Reexamination Certificate

active

08047082

ABSTRACT:
A device is provided for determining a mass flow of a first gas flowing in a flowing channel of an internal combustion engine of a motor vehicle. The device includes: sound transducers arranged at respective ends of a measuring path for providing sound signals, a temperature sensor for determining a temperature of an overall mass flowing in the flow channel, and an evaluation unit arranged downstream of the sound transducers. The evaluation unit is capable of carrying out the following: determining a flow rate of the overall mass and a speed of sound based on delay times of the sound signals, determining an overall mass flow based on the flow rate, the temperature, and a pressure of the overall mass in the flowing channel, ascertaining a proportion of a second gas flowing in the flow channel at a temperature above 10° C. and based on the speed of sound and the temperature, and correcting the overall mass flow to obtain the mass flow of the first gas.

REFERENCES:
patent: 4754650 (1988-07-01), Braswell
patent: 4922750 (1990-05-01), Magori
patent: 5247826 (1993-09-01), Bauer
patent: 5325703 (1994-07-01), Màgori
patent: 5546813 (1996-08-01), Hastings
patent: 6460402 (2002-10-01), Gomm
patent: 6487916 (2002-12-01), Gomm
patent: 6568281 (2003-05-01), Sato et al.
patent: 6886412 (2005-05-01), Banno et al.
patent: 6991607 (2006-01-01), Muz et al.
patent: 2008/0208483 (2008-08-01), Loose et al.
patent: 2009/0178490 (2009-07-01), Konzelmann et al.
patent: 555473 (1974-10-01), None
patent: 3312092 (1984-10-01), None
patent: 4011526 (1991-10-01), None
patent: 4237907 (1994-05-01), None
patent: 4336174 (1995-04-01), None
patent: 4343855 (1995-07-01), None
patent: 4442078 (1996-05-01), None
patent: 19727597 (1998-08-01), None
patent: 10156854 (2003-02-01), None
patent: 0262441 (1988-04-01), None
patent: 0477419 (1992-04-01), None
patent: 0 533 980 (1993-03-01), None
patent: 1077365 (2001-02-01), None
patent: 1233266 (2002-08-01), None
patent: 5346336 (1993-12-01), None
patent: WO 9518958 (1995-07-01), None
patent: WO 2007/020113 (2007-02-01), None
German Office Action dated Jun. 12, 2008 issued in corresponding application No. 10 2005 059 062.4.

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