Piston ring wear diagnostic device and procedure therefor

Details Piston ring wear diagnostic device and procedure therefor Piston ring wear diagnostic device and procedure therefor

1991-01-18

1993-11-02

Black, Thomas G.

Boots, shoes, and leggings

36442403, 73120, G01M 1500

Patent

active

052589307

ABSTRACT:
A device for diagnosing wear on the sliding surface of a piston ring (07a) on a piston (01) which is reciprocating inside a cylinder (02), as applied in diesel engines and compressors, etc. A through-hole (103) is bored in the cylinder wall (02) to extend from the exterior to the interior, and an electric displacement sensor (100) such as, for example, an eddy current type displacement sensor, is inserted into the through-hole inwardly toward the cylinder. The displacement sensor is utilized to measure a difference in an amount of wear between one piston ring (07a) coated with a wear resistant material (102) and another piston ring (07b, 07c, 07d) without wear resistant material coated thereon, and its initial data and data to be collected after use are computed (114), permitting an operator to diagnose the wear on the piston rings based on the change in thickness of the wear resistant material in use.

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patent: 4143319 (1979-03-01), Rouam
patent: 4592964 (1986-06-01), Buran et al.
patent: 5062298 (1991-11-01), Falcoff et al.
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Japanese Abstract, vol. 13, No. 412 (P-932) (3760) Sep. 12, 1989 & JP-A-1 152 305 (Fuji Electric Co. Ltd.) Jun. 14, 1989.
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