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A Numerical Simulation of AFR Switch of SI Engines
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English
Abstract
A novel mechanical method of achieving a rapid switch between stoichiometric and lean conditions for SI engines is explored. Two and three throttle configurations, a switch strategy which employs a standard intake manifold and an assembly of pipes and throttle(s), are investigated numerically by using a one-dimensional engine simulation program based on the method of characteristics. The results indicate that it is possible to achieve rapid AFR switch without a torque jump, i.e. unperceptible to the driver.
Authors
Citation
Li, J., Collings, N., and Ma, T., "A Numerical Simulation of AFR Switch of SI Engines," SAE Technical Paper 981439, 1998, https://doi.org/10.4271/981439.Also In
References
- Lenz H. P. Mixture Formation in Spark- Ignition Engines Springer-Verlag Wien New York 1990
- Kigota Y. Concept of Lean Burn Combustion by Barrel-Stratification SAE 920678 1992
- Omorl S. Effect of Intake Port Flow Pattern on the In-cylinder Tumbling Air Flow in Multi-valve SI Engines SAE 910477 1991
- Main J.J. Ford ELTEC Integrated Power- train Control SAE 860652 1986
- T. M a . Engine Management System
- Peters B. Numerical Simulation of Unsteady Flow in Engine Intake Manifolds SAE 930609 1993
- Benson R. S. The Thermodynamics and Gas Dynamics of Internal Combustion Engines 1 Oxford University Press 1982
- Bingham J. Intake System Design Using A Validated Internal Combustion Engine Computer Model Proceedings of IMechE 1987
- Blair A. Gas Glow Modelling of Valves and Manifolds in Car Engines Proceedings of IMechE 1987
- Shayler P. J. Fuel Transport Characteristics of Spark ignition Engines for Transient Fuel Compensation SAE 950067 1995