The Influence of the Valve Stroke Design in Variable Valve Timing Systems on Load Cycle, Mixture Formation and the Combustion Process in Conjunction with Throttle-Free Load Governing 981030
In conjunction with throttle-free load control on a 4-valve, single-cylinder spark-ignition engine, the influencing variables of charge cycle, mixture formation and combustion process are presented both as computer calculations and on the basis of test results.
The influences of the position of the maximum of the inlet valve stroke, the position of the inlet close, the shape of the valve stroke and the load motion in relation to the maximum power and minimum fuel consumption are investigated in full load by computer calculations and in partial load by engine tests.
Citation: Klein, F., Kühn, M., Weimann, H., Wolpers, F. et al., "The Influence of the Valve Stroke Design in Variable Valve Timing Systems on Load Cycle, Mixture Formation and the Combustion Process in Conjunction with Throttle-Free Load Governing," SAE Technical Paper 981030, 1998, https://doi.org/10.4271/981030. Download Citation
F. Klein, M. Kühn, H.-J. Weimann, F. Wolpers, M. Krämer, J. Abthoff
International Congress & Exposition
1998 Variable Valve Actuation and Power Boost-SP-1346, SAE 1998 Transactions - Journal of Engines-V107-3