Determining barometric pressure using a manifold pressure sensor

Details Determining barometric pressure using a manifold pressure sensor Determining barometric pressure using a manifold pressure sensor

1988-07-25

1990-05-15

Lall, Parshotam S.

Boots, shoes, and leggings

36443104, 123494, 123463, 123412, 731182, F02D 4130, G06F 1520

Patent

active

049263358

ABSTRACT:
A method for determining barometric pressure uses a manifold pressure sensor for measuring the manifold absolute pressure. A pressure drop between the atomosphere and the intake manifold is determined by utilizing stored lookup tables based on measured values of throttle angle and engine speed. Barometric pressure is then determined by summing the manifold absolute pressure and the pressure drop.

REFERENCES:
patent: 4271797 (1981-06-01), McCarbery
patent: 4385606 (1983-05-01), Hattori et al.
patent: 4446523 (1984-05-01), Reinke
patent: 4590563 (1986-05-01), Matsumura et al.
patent: 4600993 (1986-07-01), Pauwels et al.
patent: 4714067 (1987-12-01), Staerzl
patent: 4787043 (1988-11-01), Zimmerman et al.

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