Comparison of Measured and Predicted Skirt Liner Clearances in a Gasoline Engine Isuzu Motors Limited

Format:

Conference/Event

Author/Creator:

Perchanok, Mathias, author.

Conference Name:

International Fuels and Lubricants Meeting and Exposition (1997-10-13 : Tulsa, Oklahoma, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1997

Summary:

Using skirt-liner clearance and cylinder pressure measurements provided by Isuzu Motors, Limited of a production type gasoline automotive engine, a validation study was done of Ricardo's PISDYN code, which predicts the secondary motions and skirt liner elastohydrodynamic lubrication of pistons. Predictions using the computer code of the skirt liner clearance at two locations on the skirt were compared with measured results. Using the code, parametric studies were done.Very good qualitative and quantitative agreement was found for the baseline cases. In the parametric studies using the code only, the following were found: The predicted clearances were very sensitive to variation in cold minimum clearance. The effect of cylinder induced pressure deformation was significant, especially near the point of peak cylinder pressure. Increasing the cylinder pressure increased the peak clearances. Changing the asperity roughness height affected the clearances near a point of asperity contact only. The clearances showed small sensitivity to changes in temperature

Notes:

Vendor supplied data

Publisher Number:

972879

Access Restriction:

Restricted for use by site license