Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1983-07-05
1986-01-28
Rowland, James L.
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
340 52F, 340 60, G01L 2700
Patent
active
045663092
ABSTRACT:
A pressure sensor is disposed downstream of a throttle valve in the intake tube of an internal combustion engine. When the throttle valve is closed, a throttle valve switch generates a logic signal. A monitoring of the pressure sensor is effected in that upon the simultaneous occurrence of the logic signal and a pressure signal which corresponds to an abnormal or a physically impossible state when the throttle valve is closed, an alarm is triggered.
REFERENCES:
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patent: 3634881 (1972-01-01), Cline
patent: 3868625 (1975-02-01), Speigner et al.
patent: 3935558 (1976-01-01), Miller et al.
patent: 4189707 (1980-02-01), Ermert
patent: 4246566 (1981-01-01), Endo et al.
patent: 4398174 (1983-08-01), Smith, Jr.
Lotterbach Gerhard
Van Belzen David
van Woudenberg Jan F.
Zucker Udo
Greigg Edwin E.
Robert & Bosch GmbH
Rowland James L.
Tumm Brian R.
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