Characteristics of Diesel Engine Oil for Heavy Duty Commercial Vehicles Achieving for both Fuel Economy and Reliability

2019 ◽  
Author(s):  
Yoichiro Nakamura ◽  
Ken Hashimoto ◽  
Hideki Nakamura ◽  
Shinji Ejiri
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Engine Oil ◽  
Heavy Duty ◽  
Commercial Vehicles

Development of Fuel Economy Engine Oil for Heavy Duty Diesel Engine

2015 ◽  
Author(s):  
Yoichiro Nakamura ◽  
Kenji Tomizawa ◽  
Takahiro Onishi ◽  
Takashi Hashimoto ◽  
Motoshige Sato ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Engine Oil ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

The Development of Fuel Economy Test Method for Heavy Duty Diesel Engine Oil (The First HD Engine Test Method and the New JASO DH-2F Category)

2017 ◽  
Vol 10 (2) ◽  
pp. 502-509
Author(s):  
Ken Hashimoto ◽  
Kenji Tomizawa ◽  
Yoichiro Nakamura ◽  
Takashi Hashimoto ◽  
Takahiro Tatani ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Test Method ◽  
Engine Oil ◽  
Engine Test ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

Impact of military JP-8 fuel on heavy-duty diesel engine performance and emissions

2007 ◽  
Vol 221 (8) ◽  
pp. 957-970 ◽  
Author(s):  
G Fernandes ◽  
J Fuschetto ◽  
Z Filipi ◽  
D Assanis ◽  
H McKee
Keyword(s):  
Particulate Matter ◽  
Diesel Engine ◽  
Fuel Economy ◽  
Engine Performance ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Performance And Emissions ◽  
Heavy Duty Diesel ◽  
Engine Performance And Emissions ◽  
The Impact

Investigating the impact of jet fuel on diesel engine performance and emissions is very important for military vehicles, due to the US Army Single Fuel Forward Policy mandating that deployed vehicles must refuel with aviation fuel JP-8. There is a known torque and fuel economy penalty associated with the operation of a diesel engine with JP-8 fuel, due to its lower density and viscosity. On the other hand, a few experimental studies have suggested that kerosene-based fuels have the potential for lowering exhaust emissions, especially particulate matter, compared to diesel fuel #2 (DF-2). However, studies so far have typically focused on quantifying the effects of simply replacing the regular DF-2 with JP-8, rather than fully investigating the reasons behind the observed differences. This research evaluates the effect of using JP-8 fuel in a heavy-duty diesel engine on fuel injection, combustion, performance, and emissions, and subsequently utilizes the obtained insight to propose changes to the engine calibration to mitigate the impact of the trade-offs. Experiments were carried out on a Detroit Diesel Corporation (DDC) S60 engine outfitted with exhaust gas recirculation (EGR). The results indicate that torque and fuel economy of diesel fuel can be matched, without smoke or NO x penalty, by increasing the duration of injection to compensate for the lower fuel density. The lower cetane number of JP-8 caused an increased ignition delay and increased premixed combustion, and their cumulative effect led to relatively unchanged combustion phasing. Under almost all conditions, JP-8 led to lower NO x and particulate matter (PM) emissions and shifted the NO x-PM trade-off favourably.

Sooted Diesel Engine Oil Pumpability Studies as the Basis of a New Heavy Duty Diesel Engine Oil Performance Specification

2002 ◽  
Author(s):  
David M. Stehouwer ◽  
Greg Shank ◽  
Steven N. Herzog ◽  
Charles W. Hyndman ◽  
Bernard G. Kinker ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Engine Oil ◽  
Heavy Duty ◽  
Performance Specification ◽  
Heavy Duty Diesel Engine ◽  
Oil Performance ◽  
Heavy Duty Diesel

Numerical Simulation on Aerodynamic Characteristics of Heavy-Duty Commercial Vehicle

2011 ◽  
Vol 346 ◽  
pp. 477-482 ◽  
Author(s):  
Zhe Zhang ◽  
Ying Chao Zhang ◽  
Jie Li ◽  
Jia Wang
Keyword(s):  
Numerical Simulation ◽  
Fuel Economy ◽  
High Speed ◽  
Aerodynamic Drag ◽  
Aerodynamic Characteristics ◽  
National Standards ◽  
Heavy Duty ◽  
Commercial Vehicles ◽  
Automotive Technology ◽  
New Research

With the development of automotive technology and high-speed highway construction, the speed of the vehicles increase which cause the significant increase in the aerodynamic drag when road vehicles are moving. Thereby the power of the vehicles, fuel economy, operational stability and other properties are affected very seriously. Heavy-duty commercial vehicles as the most efficient way to transport goods on the highway are widely used, and the speed of the vehicles increases faster. Especially the demands for heavy-duty commercial vehicles are increasing in recent years. Reducing the aerodynamic drag by the analysis of external aerodynamic characteristics, improving the fuel economy and reducing energy consumption have become new research topics of heavy-duty commercial vehicles. To make the heavy-duty commercial vehicles meet the national standards of energy saving, a simplified heavy-duty commercial truck model was built in this paper. The numerical simulation of the vehicle was completed based on the theory of the aerodynamics. The aerodynamic characteristics were analyzed, according to the graphs of the pressure distribution, velocity distribution and flow visualization. To improve the aerodynamic characteristics of heavy-duty commercial vehicles, the main drag reduction measures are reducing the vortex of the cab and the container, the end of the container and the bottom of the container.

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