Intake pressure sensing device for internal combustion engine

Measuring and testing – Vehicle chassis – Steering

Reexamination Certificate

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Reexamination Certificate

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06840094

ABSTRACT:
An intake pressure detecting device for detecting the intake pressure in an intake pipe as information for controlling the operational state of an engine includes an intake pressure detecting sensor for detecting the absolute pressure of the intake air. It further includes a reference voltage power supply for supplying a prescribed reference voltage Vref and a differential amplifier for amplifying the differential between the output voltage Vin from the intake pressure detecting sensor and the reference voltage Vref of the reference voltage power supply. Further, an A/D converter is included for converting the analogue signal output by the differential amplifier to a digital signal. Thereby, the intake pressure can be detected to a high degree of accuracy in a two-cycle engine, for example, which has a relatively low intake negative pressure, while achieving cost reductions.

REFERENCES:
patent: 4428227 (1984-01-01), Yamagata et al.
patent: 4660408 (1987-04-01), Lewis
patent: 4750464 (1988-06-01), Staerzl
patent: 4787966 (1988-11-01), Nakajima et al.
patent: 4788958 (1988-12-01), Nakajima et al.
patent: 4819602 (1989-04-01), Mieno et al.
patent: 4825837 (1989-05-01), Nakagawa
patent: 4860712 (1989-08-01), Nakajima et al.
patent: 4903649 (1990-02-01), Staerzl
patent: 4922429 (1990-05-01), Nakajima et al.
patent: 4958611 (1990-09-01), Uchinami et al.
patent: 5635635 (1997-06-01), Tsukada et al.
patent: 5786531 (1998-07-01), Lewis et al.
patent: 6457353 (2002-10-01), Kanke et al.
patent: 6564642 (2003-05-01), Clifford
patent: 314 8368 (1982-07-01), None
Patent Abstract of Japanese Patent Publication No. 57-097105, Jun. 16, 1982.
Patent Abstract of Japanese Patent Publication No. 11-298327, Oct. 29, 1999.
Patent Abstract of Japanese Patent Publication No. 09-112316, Apr. 28, 1997.
Patent Abstract of Japanese Patent Publication No. 04-303726, Oct. 27, 1992.

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