Study of Transient Oil Consumption of Automotive Engine Toyota Motor Corporation

Format:

Conference/Event

Author/Creator:

Inoue, Takashi, author.

Conference Name:

1989 SAE International Fall Fuels and Lubricants Meeting and Exhibition (1989-09-25 : Baltimore, Maryland, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1989

Summary:

The oil consumption phenomena during transient engine operating condition is analyzed. The investigation of the oil consumption by means of the real-time oil consumption meter shows that higher intake manifold vacuum during engine-brake condition causes a larger amount of transient oil consumption.The reverse blowby gas flow into the combustion chamber from the crankcase is generated by the high vacuum under engine-brake condition. It is found that this reverse gas flow carries the oil into the chamber from the third land of the piston through the ring end gap of the compression rings. The oil on the piston skirt leaks into the third land through the clearance between the oil ring and the cylinder bore. The weakened bore-to-ring contact pressure by the piston slap motion increases the amount of the leakage oil.New ring sets and pistons are developed based on the results of this study. The experimental results prove that these ring sets and pistons have high potential to decrease the amount of the transient oil consumption

Notes:

Vendor supplied data

Publisher Number:

892110

Access Restriction:

Restricted for use by site license