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Method of A/F Control During SI Engine Cold Start, Part 1
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English
Abstract
This work presents an approach for developing a control algorithm for fuel delivery at cold start based on C.F.Aquino's fuel film dynamic model [1].
The control algorithm presented takes into account the fuel delivery both in the fuel film form and in the form of droplets and vapor, that allows setting the limits on the fuel supply calculation in order to achieve good startability (without spark plug wetting) and low CO and HC emission.
An algorithm was developed as a computer program and tested in calculation experiments. Although the empirical parameters of mathematical fuel delivery model were determined on a carburetor engine, this control algorithm is also applicable to engines with fuel injection due to similarity of the physical nature of mixture preparation.
Authors
Citation
Neyachenko, I., "Method of A/F Control During SI Engine Cold Start, Part 1," SAE Technical Paper 981171, 1998, https://doi.org/10.4271/981171.Also In
References
- Aquino C.F. «Transient A/F Control Characteristics of the 5 Liter Central Fuel Injected Engine» SAE Pap. 810494
- Laurikko J. «Emissions Performance of Current TWC Vehicles at Low Ambient Temperature over FTP and ECE Test Cycles» SAE Pap. 940933
- Hires S.D. Overington M.T. «Transient Mixture Strength Excursions - An Investigation of Their Causes and the Development of a Constant Mixture Strength Fueling Strategy» SAE Pap. 810495
- Monden H. Kataoka R. «Practical Measuring Method of Deposited Fuel and Evaporated Fuel in the Induction System» SAE Pap. 905042
- Hohsho Y. Fucunaga S. Murata K. «Mixture Formation at Engine Cranking» 1979 27 2 21 29
- Aquino C.F. «Steady-State and Transient A/F Control Requirements for Cold Operation of a 1.6 Liter Engine with Single-Point Fuel Injection» SAE Pap. 850509
- Browning L.H. «Alcohol Cold Starting - A Theoretical Study» SAE Pap. 839097
- Ladomatos N. Rose D.W. «Results of a Computer Model of Droplet Thermodynamic and Dynamic Behavior in the Port of a Port-Injected Engine» SAE Pap. 960468
- Voinov A.N. «Combustion in High-Speed Piston Engines» Machine-Building Moscow, USSR 1977