Paper Title
Measurement of Lubricating Oil Film Thickness between Piston Ring -liner Interface in an Engine Simulator
Keywords
- Piston Ring-Cylinder Liner Interface
- Frictional Losses
- Mechanical Wear
- Internal Combustion Engine
- Particulate Emission Standards
- Capacitance Method
- Oil Film Thickness Measurement
- Piston Ring Lubrication
- Cylinder Liner Friction
- Dielectric Constant
- Capacitive Micro Sensor
- Non-Firing Engine Simulator
- Lubricating Oil Film Thickness
- Engine Tribology
- Piston Tilt Reversal
- Upward Stroke
- Downward Stroke
- Oil Film Variation
- Engine Wear Reduction
- Lubrication Optimization
- Automotive Tribology
- Engine Efficiency
- Lubrication Monitoring
- Engine Component Durability
- Oil Film Dynamics
Journal
Research Impact Tools
Publication Info
| Issue: 2008-28-0071 | Pages: 1-6
Published On
January, 2008
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Abstract
The interface between the piston rings and cylinder liner play an important role in total frictional losses and mechanical wear of internal combustion engine and is increasingly coming under scrutiny as legislated particulate emission standards are getting more and more stringent. The capacitance method is used for measurement of minimum oil film thickness between piston ring and liner interface. Measurement of capacitance formed between the piston ring and a probe mounted flush in the liner provides an accurate means of determining the oil film thickness provided that the region between the probe and liner is flooded with oil and dielectric constant of the oil is known. This paper presents detailed design and measurement of lubricating oil film thickness using capacitive micro sensor in a non-firing engine simulator. Lubricating oil film thickness was found to vary between 0.2μm to 8μm in the non firing engine simulator. At a particular position, lubricating oil film thickness varies significantly in upward and downward stroke of the engine due to reversal in direction of piston tilt in the two directions of motion.
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