Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1995-10-26
1998-11-03
Allen, Stephone B.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
73705, H01T 516
Patent
active
058312633
ABSTRACT:
An in-cylinder pressure sensing apparatus for a multi-cylinder engine has a plurality of sensing parts packaged between a cylinder head and a cylinder block of an engine having a plurality of cylinders and being operative to detect a signal indicative of an internal pressure of each of the plurality of cylinders. A detection circuit is provided for connecting the sensing parts in series and for overlapping detection signals obtained from the individual sensing parts to take out a resulting overlapped signal. A reference signal generator operates to supply a reference signal for separating detection signals corresponding to the individual cylinders from the overlapped signal. A unit is also provided for separating the detection signals, detected in accordance with pressures of the individual cylinders, from the overlapped signal on the basis of the reference signal.
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Komachiya Masahiro
Kurita Masahiro
Nakazawa Terumi
Oho Shigeru
Sasayama Takao
Allen Stephone B.
Hitachi , Ltd.
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