Abstract
Keywords - diesel engine, timing chain, oil pump chain, auxiliary belt, simulation
Abstract - Fluctuation of crankshaft speed in a turbo charged direct-injection diesel (i-CTDi) engine significantly increases the load on the transmission chain. A simulation method which enables the transmission load caused by these fluctuations to be predicted was therefore developed. All moving parts, centering on the crankshaft, have been connected in the simulation, which is therefore able to faithfully reproduce a working engine on computer.
The model was simplified by focusing on the frequency response of each component when it was being constructed, enabling accuracy to be reconciled with a reduction in calculation time.
This has enabled the transmission load in an i-CTDi engine to be both accurately and rapidly predicted. The virtual engine contributed significantly to the optimization of the design of the transmission system in an actual engine.