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US 10,962,350 B2Granted
Systems and methods for measurement of piston-to-piston clearances in multi-cylinder opposed piston engines
AssigneeCummins Inc.
InventorsJeffrey A. Wheitner, J. Steven Kolhouse
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Abstract
An optical measurement device is disclosed and includes a body configured to be mounted to at least one piston cylinder, and a compression ratio determination unit operatively connected to the body to receive optical measurement data and compute a clearance between at least two opposed pistons disposed within the at least one piston cylinder.
Claims13
An optical measurement device, comprising:
- a body configured to be mounted to a piston cylinder;
- and
- a compression ratio determination unit operatively connected to the body to receive optical measurement data and compute a clearance between at least two opposed pistons disposed within the piston cylinder.
A method of measuring a distance between a first piston and an opposed second piston, comprising:
- inserting an optical measurement device into a bore of a cylinder;
- performing a first rotational movement with the optical measurement device in a radial direction for selectively positioning the optical measurement device in the cylinder to measure a first minimum distance between the optical measurement device and the first piston;
- performing a second rotational movement with the optical measurement device in the radial direction for selectively positioning the optical measurement device in the cylinder to measure a second minimum distance between the optical measurement device and the second piston;
- and
- calculating a total distance between the first piston and the second piston.
2 more elements
Dependencies are inferred from the claim text.