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Optimization of the Solenoid Valve Behavior in Common-Rail Injection Systems
Technical Paper
2000-01-2042
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Injection rate profile is a powerful tool to control engine performance and emission levels. In particular, the Common Rail (C.R.) injection system has allowed flexible fuel injection in DI-diesel engines by permitting a free mapping of the start of injection, injection pressure, rate of injection and, in the near future, multiple injections,. This paper deals with improvements of stable operating condition limits of the Common Rail injector for multiple injection purposes. The focus was to optimize the behavior of the solenoid valve in order to reduce the minimum time interval between two consecutive injections required for system stability. An extensive experimental characterization of the valve has been performed in order to measure the main mechanical and electrical parameters of the assembly components. The experimental and the numerical studies have allowed optimizing the current profile and consequently the design of the anchor pin-ring assembly of the solenoid valve. A new solenoid valve electronic driving circuit has been designed for this purpose. This optimization allowed reducing the minimum valve switching time of about 300 μs. Numerical expectations have been confirmed by the first application of the new driving circuit in valve driving.
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Citation
Bianchi, G., Pelloni, P., Filicori, F., and Vannini, G., "Optimization of the Solenoid Valve Behavior in Common-Rail Injection Systems," SAE Technical Paper 2000-01-2042, 2000, https://doi.org/10.4271/2000-01-2042.Also In
References
- 1993
- Stumpp, G. Ricco, M. “Common-Rail - An Attractive Fuel Injection System for Passenger Car DI Engines” SAE Paper 960870 1996
- Boehner, W. Hummel, K. “Common Rail Injection System for Commercial Diesel Vehicles” SAE Paper 970567 1997
- Renner, G. Koyannagi, K. Maly, R.R. “Effect of Common Rail Injector Design in the Emission Characteristics of Passenger Car DI Engines” Proceedings of “The fourth International Symposium COMODIA 98” 477 482 1998
- Guerrassi, N. Dupraz P. “A Common-Rail Injection System For High Speed Direct Injection Engines” SAE 980803 1998
- Funai, K. Yamaguchi T. Itoh, S. “Injection Rate Shaping Technology with Common-Rail Fuel System (ECD-U2)” SAE Paper 960107 1996
- Flaig, U. Polach, W. Ziegler, G. “Common Rail System (CR-System) for Passenger Car DI Diesel Engines; Experience with Application for Series Production Projects” SAE Paper 1999-01-0191 1999
- Ficarella, A. Laforgia, D. Landriscina, V. “Evaluation of Instability Phenomena in a Common Rail Injection System for High Speed Diesel Engines” SAE Paper 1999-01-0192 1999
- Nehmer, D. A. Reitz, R. D. “Measurements of the Effects of Injection Rate and Split Injections on Diesel Engine Soot and NOx Emissions” SAE Paper 940668 1994
- Pierpont, D. A. Montgomery, D.T. Reitz, R. D. “Reducing Particulate and NOx Using Multiple Injections and EGR in a D.I. Diesel Engine” SAE Paper 940897 1994
- Tow, T. Pierpont, D. A. Reitz, R. D. “Reducing Particulates and NOx Emissions by Using Multiple Injections in a Heavy Duty D.I. Diesel Engine” SAE Paper 940897 1994
- Chan, M. Das, S. Reitz, R. D. “Modeling Multiple Injection and EGR Effects on Diesel Engine Emissions SAE Paper 972864 1997
- Han, Z. Uludogan, Ali Hampson, G.J Reitz, R. D. “Mechanism and NOx Emissions Reduction Using Multiple Injection in a Diesel Engine” SAE Paper 960633 1996
- Ganser. M.A. “Common Rail Injector with Injection Rate Control” SAE Paper 981927 1998
- Digesu P. Ficarella, A. Laforgia, D. Bruni, G. Ricco, M. “Diesel Electro-Injector: A Numerical Simulation Code” SAE Paper 940193 1994
- Filicori, F. Lo Bianco, C.G. Tonielli, A. “Modeling and Control Strategies for a Variable Reluctance Direct-Drive Motor” IEEE Transactions on Industrial Electronics 40 1 February 1993 1993