一种基于活塞环缸套摩擦测量设备的膜厚观测方法
By combining a piston ring and cylinder liner friction measurement device with a high-speed camera and laser interferometry, the problem of measuring the oil film thickness distribution in the piston ring and cylinder liner contact area, which is impossible to measure by traditional methods, was solved, realizing high-precision oil film thickness measurement and lubrication status research under dynamic conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING INST OF TECH
- Filing Date
- 2025-11-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies cannot effectively measure the oil film thickness distribution in the contact area of the piston ring and cylinder liner friction pair, and traditional methods cannot perform accurate measurements under high-frequency dynamic conditions, and the experimental setup differs greatly from actual working conditions.
Using a piston ring and cylinder liner friction measurement device, combined with a high-speed camera and laser interferometry, the oil film thickness is measured at the nanometer level through field calibration, finding the dynamic contact area, setting parameters, and continuously acquiring images. The measurement is then verified using a simulation model.
It enables arbitrary measurement of oil film thickness between piston rings and cylinder liners with nanometer-level accuracy. It can capture dynamic contact areas under high-frequency reciprocating motion conditions and study changes in lubrication state under complex working conditions.
Smart Images
Figure CN121576930B_ABST