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PAIRCUI- A New Pressure Accumulative, Injection Rate Controllable Unit Injector for Diesel Engine Fuel Systems
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Abstract
A pressure accumulative injection rate controllable unit injector-PAIRCUI is proposed and developed. This unit injector is powered by fuel pressure accumulation controlled by an electronic control unit and its injection rate is shaped by inner valves of the injector.
Inherent advantages of an accumulator type unit injector have been carried out in this new design, including sructural simplicity, totally flexible injection timing, medium common rail pressure, tolerable pump size and flow requirement. A number of decisive features have also been realized that are significant for high efficiency and low emissions of engine combustion, including higher mean effective injection pressure(MEIP), pilot injection capability and rapid end of injection. The injection pressure is independent of engine speed, but regulated upon engine load. These characteristics are beneficial in improving engine performance and fuel consumption. Installing PAIRCUI Fuel System on an engine is convenient since the injector holder is designed as a standardized P or S size and a conventional P or S nozzle tip is incorporated as a part of the injector.
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Citation
Su, W., Wang, Y., Li, S., Xie, H. et al., "PAIRCUI- A New Pressure Accumulative, Injection Rate Controllable Unit Injector for Diesel Engine Fuel Systems," SAE Technical Paper 971680, 1997, https://doi.org/10.4271/971680.Also In
References
- Wright M.J. “Meeting the Emissions Challenge for Heavy Duty Diesel Engines into the Next Century” Engine Seminar '95 Beijing, China June 14 1995
- Ishida Masahiro et al. “The Effect of Pilot Injection on Combustion in a Turbocharged D.I. Diesel Engine” SAE Paper No. 941692
- Durnholz, M. Engders, H. Frisse, P. “Preinjection - A Measure to Optimize the Emission Behaviour of DI Diesel Engine” SAE Paper No. 940674
- Shimada, T. Shoji, T. Tadaka, Y. “The Effect of Fuel Injection Pressure on Diesel Engine Performance” SAE paper No.891900
- Nakakita, K. et al. “Optimization of Pilot Injection Pattern and Its Effect on Diesel Combustion with High Pressure Injection” Transaction JSME, 59-559(B) 892 898 1993
- Yamaki, Y. et al. “Combustion Characteristics with Pilot Injection” Proc. of 11th Internal Combustion Engine Symposium 1 6 1993
- Yoshizu, F. Nakayama, M. “A Study of New Injector and Spray Concepts of Small DI Diesel Engine. 1st Report” Transaction JSME, 59-559(B) 880 885 1993
- Shakal, J.S. Martin, J.K. “Interactions and Main Effects with Auxiliary Injection in a Two-Stroke DI Diesel Engine” SAE Paper No.940667
- Shakal, J.S. Martin, J.K. “Imaging and Spatially Resolved Two-Color Temperature Measurements through a Coherent Fiberoptic: Observation of Auxiliary Fuel Injection Effects on Combustion in a Two-Stroke DI Diesel Engine” SAE Paper No. 940903
- Nehmer D.A. et al. “Measurement of the Effect of Injection Rate and Spill Injections on Diesel Engine Soot and NOx Emissions” SAE Paper No. 940668
- Tow T.C. “Reducing Particulate and NOx Emission by Using Multiple Injections in a Heavy Duty D.I. Diesel Engine” SAE Paper No. 940897
- Yamaki Yoshihisa et al “Application of Common Rail Fuel System on a Heavy Duty Diesel Engine” SAE Paper No. 942294
- Osuka Isao et al. “Benefits of New Fuel Injection System Technology on Cold Startability of Diesel Engines-Improvement of Cold Startability and White Smoke Reduction by Mean of Multi Injection with Common Rail Fuel System (ECD-U2)” SAE Paper No. 940586
- Hower M.J. Mueller R.A. et al. “The New Navistar T 444E Direct-Injection Turbocharged Diesel Engine” SAE Paper No.930296
- Stocker A.R. et al. “Development of the HEUI Fuel System- Integration of Design, Simulation, Test, and Manufacturing” SAE Paper No.930071
- Beck N.John Chen S.K. “Injection Rate Shaping and High Speed Combustion Analysis - New Tools for Diesel Engine Combustion Development” SAE Paper No. 900639