Determination of optimal counterweight configurations for multithrow crankshafts

Conference · Sun Sep 01 00:00:00 EDT 1996

OSTI ID:282274

Sharpe, R N; David, J W; Lowndes, E M

Balancing of the crankshaft to minimize bearing loads is a critical concern in the design of multicylinder engines, especially high-speed racing engines. In this paper a numerical model is developed for the crankshaft-connecting rod-piston assembly that considers reciprocating forces as well as gas pressure forces. The model is used in an optimization scheme to design crankshaft counterweights which minimize main bearing forces. A V-8 NASCAR engine is analyzed. The results indicate reductions in average bearing force of as much as 73% while peak force is reduced as much as 41%.

• OSTI ID: 282274
• Report Number(s): CONF-960204-; ISBN 1-56091-798-9; TRN: IM9638%%72
• Resource Relation: Conference: International congress and exposition of the Society of Automotive Engineers (SAE), Detroit, MI (United States), 26-29 Feb 1996; Other Information: PBD: 1996; Related Information: Is Part Of Modeling of SI and CI engines; PB: 283 p.
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
SPARK IGNITION ENGINES
RELIABILITY
MECHANICAL SHAFTS
MECHANICAL VIBRATIONS
BEARINGS
SERVICE LIFE