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Advanced Fuel Economy in Hino New P11C Turbocharged and Charge-Cooled Heavy Duty Diesel Engine
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Abstract
This paper describes some of the advanced technologies designed for low fuel consumption in the new P11C in-line 6-cylinder, heavy duty diesel engine which has two power ratings of 239kW at 2100rpm and 221kW at 2150rpm.
The new engine's displacement has been increased from 8.8 liters of the base engines (EP100, P09C) to 10.5 liters without an increase in either engine weight or overall dimensions. The turbocharger has a mixed-flow turbine which improves the fuel consumption by improving the turbine efficiency. The piston, made from ductile cast iron, improves the fuel consumption and reduces the exhaust emissions by heat insulation of the combustion chamber (i.e. the ductile cast iron has a lower thermal conductivity than the previous piston's aluminum alloy). Additionally, this engine achieves lower friction loss by an intake air system with low air flow resistance and by roller cam followers.
Due to these advancements the P11C achieves a BSFC of 184g/kWh at 1500rpm, and meets the 1989 Japanese exhaust emission regulations.
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Tsujita, M., Niino, S., Ishizuka, T., Kakinai, A. et al., "Advanced Fuel Economy in Hino New P11C Turbocharged and Charge-Cooled Heavy Duty Diesel Engine," SAE Technical Paper 930272, 1993, https://doi.org/10.4271/930272.Also In
References
- Suzuki T. et al. “Development of a Higher Boost Turbocharged Diesel Engine for Better Fuel Economy in Heavy Vehicles” SAE paper 830379 1983
- Sato A. et al. “Advanced Boost-up in Hino EP100-II Turbocharged and Chargecooled Diesel Engine” SAE paper 870298 1987
- Rohlik, H. E. “Analytical Determination of Radial Inflow Turbine Design Geometry for Maximum Efficiency” 1967
- Chou Cheng-chien et al. “The Design and Testing of a Mixed-flow Turbine for Turbochargers” SAE paper 890644 1986
- Suzuki T. et al. “An Observation of Combustion Phenomenon on Heat Insulated Turbocharged and Inter-Cooled D.I. Diesel Engines” SAE paper 861187 1986
- Suzuki T. et al. “Controlling Exhaust Emission from the Turbocharged Automotive Diesel Engine” 16th FISITA 2-10 1976
- Ikeya N. et al. “Development of Advanced Model of Turbocharger for Automotive Engines” SAE paper 920047 1982