Method of measuring atmospheric pressure for an internal combust

Details Method of measuring atmospheric pressure for an internal combust Method of measuring atmospheric pressure for an internal combust

1989-10-18

1990-10-16

Raevis, Robert

Measuring and testing

Vehicle drive train

Rear end

G01M 1500

Patent

active

049626639

ABSTRACT:
According to the present invention, a method of measuring atmospheric pressure for a combustion engine having a suction pipe connected to it is accomplished by first providing a sensor for detecting negative pressure in the suction pipe. Next, a maximum ripple value of an output of the sensor means is measured when an operating condition of the engine becomes a predetermined one, to thereby determine the atmospheric pressure.

REFERENCES:
patent: 4271797 (1981-06-01), McCarbery
patent: 4388825 (1983-06-01), de Valpillieres
patent: 4475381 (1984-10-01), Nakatomi et al.
patent: 4600993 (1986-07-01), Pauwels et al.

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