Engine pressure and knock sensor

Measuring and testing – Engine detonation – Combustion signal compared to reference signal varied by a...

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73116, 123494, G01L 2322, G01L 2324

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active

044467249

ABSTRACT:
A combination pressure and knock sensor produces an electrical signal in response to the intake manifold absolute pressure of an internal combustion engine. A high pass filter is coupled to the output of the sensor for providing a signal indicative of engine knock. A low pass filter is coupled to the output of the sensor for providing a signal indicative of absolute intake manifold vacuum pressure.

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patent: 3589177 (1971-06-01), Merlo
patent: 3703825 (1972-11-01), Merlo
patent: 3872292 (1975-03-01), Dawson, Jr.
patent: 4083234 (1978-04-01), Aono et al.
patent: 4131088 (1978-12-01), Reddy
patent: 4174638 (1979-11-01), Zabler et al.
patent: 4232545 (1980-11-01), Dobler et al.
patent: 4266421 (1981-05-01), McDougal

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