Back to results
US 2019/0186899 A1Published application
Systems and methods for measurement of piston-to-piston clearances in multi- cylinder opposed piston engines
AssigneeCummins Inc.
InventorsJeffrey A. Wheitner, J. Steven Kolhouse
Life of this patent
Estimating the term…
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.
Claims22
An optical measurement device, comprising:
- 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.
An optical measurement device, comprising:
- a base having a beam projector configured to project a light beam, and a beam receiver configured to receive the light beam;
- an elongated body having a first end connected to the base and an opposite second end;
- a reflective object configured to redirect the light beam and disposed near the second end of the elongated body, such that the light beam is projected by the beam projector toward the reflective object and the redirected light beam is received by the beam receiver.
A method of measuring a distance between at least two components, comprising:
- inserting an optical measurement device into a cavity through a bore;
- performing rotational movement with the optical measurement device in a radial direction for selectively positioning the optical measurement device in the cavity;
- and
- calculating a distance between the at least two components based on the rotational movement of the optical measurement device inserted into the cavity.
1 more element
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 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 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.