Pressure sensor unit having a ring-like pressure sensing...

Details Pressure sensor unit having a ring-like pressure sensing... Pressure sensor unit having a ring-like pressure sensing...

2006-09-19

2006-09-19

McCall, Eric S. (Department: 2855)

Measuring and testing

Engine detonation

Specific type of detonation sensor

C073S115060

Reexamination Certificate

active

07107819

ABSTRACT:
According to the present invention, there is provided a pressure sensor unit (1) having a ring-like pressure sensing element (3), which is formed separately from a spark plug, in the state where a spark plug (100) has been attached a rear end of at least one of an inner cylinder member (6) and an outer cylinder member (5) in the direction of an axis (O) is located between the rear end of the pressure sensing element (3) and the rear end of a insulator (110) of the spark plug (standard section (SS)), while at the rear of the standard section (SS), no component of the pressure sensor unit (1) exists in an area inside the inner circumferential surface of the outer cylinder member (5) or its extended plate (EP).

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