Numerical Study of Scavenging Flow in Poppet-Valved Two-Stroke Engines Kanazawa Univ

Format:

Conference/Event

Author/Creator:

Yang, Xiaofeng, author.

Conference Name:

International Congress & Exposition (1999-03-01 : Detroit, Michigan, United States)

International Fuels and Lubricants Meeting and Exposition (1999-10-25 : Toronto, Canada)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1999

Summary:

Three-dimensional computations are performed to investigate the scavenging characteristics of poppet-valved two-stroke engines. The new subroutines are developed to handle various valve shrouds. Visualization of scavenging flow on a modified two-stroke transparent cylinder engine is used for validation and compared well in flow pattern. The flows in engines with different configurations are simulated at a speed of 5000 r/minutes The stroke bore/ratio and valve arrangements were considered to investigate their effects on the scavenging flows. Additionally, valve timing and boost pressure have also been studied. The results show that stroke/bore ratio of 0.4 to 0.6, shroud angle of 69° to 108°, turn angle of shroud of 18° to 28°, average tumble ratio of 1.2-1.6 were found to be the optimum range for effective scavenging

Notes:

Vendor supplied data

Publisher Number:

1999-01-1250

Access Restriction:

Restricted for use by site license