Piston slap is one of the major sources of noise in a 4-cycle diesel engine. Reduction of it is essential in reducing total engine noise.For the purpose of reducing piston slap noise, piston lateral transverse movement was simulated using a new analytical model which considers not only the effect of oil cushioning, but also piston deformation, within a reasonable computing time.The simulation results showed that the modification of piston profile, as well as piston pin center offset and reduction of piston-liner clearance, can reduce the piston slap force. As a result, an improved piston profile was designed for reducing slap noise, and the effect of the improved piston on noise reduction was proven.
Analysis and Reduction of Piston Slap Noise in Diesel Engines
Sae Technical Papers
SAE International Congress and Exposition ; 1989
1989-02-01
Conference paper
English
Analysis and Reduction of Piston Slap Noise ef Diesel Engines
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