Measuring and testing – Vehicle drive train – Rear end
Patent
1996-12-16
1998-05-05
Chilcot, Richard
Measuring and testing
Vehicle drive train
Rear end
73 3512, 324393, 324402, G01M 1500
Patent
active
057476772
ABSTRACT:
An apparatus for detecting pressure in an engine cylinder comprises a cylinder pressure sensor inserted between an ignition plug screwed into an engine cylinder head and a bearing surface on which the ignition plug is mounted. The sensor outputs a detection signal depending upon a change in the sensor load corresponding to a change in the pressure in the cylinder, to detect the pressure in the cylinder based on a detection signal from the cylinder pressure sensor. The detection signal from the cylinder pressure sensor is invalidated for only a predetermined period based on an ignition signal that controls the ignition of the ignition plug so that the S/N ratio in the sensor output will not be deteriorated by the ignition noise.
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Mori Ken-ichi
Tomisawa Naoki
Chilcot Richard
McCall Eric S.
Unisia Jecs Corporation
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