Development of a Fuel Economy and Exhaust Emissions Test Method with HILS for Heavy-Duty HEVs

2008 ◽  
Vol 1 (1) ◽  
pp. 873-887 ◽  
Author(s):  
Kenji Morita ◽  
Kazuki Shimamura ◽  
Seiichi Yamaguchi ◽  
Keiji Furumachi ◽  
Nobuya Osaki ◽  
...  
Keyword(s):  
Fuel Economy ◽  
Exhaust Emissions ◽  
Test Method ◽  
Heavy Duty

The Impact of Lubricants on Heavy Duty Diesel Engine Fuel Economy and Exhaust Emissions

2000 ◽  
Author(s):  
K. M. Jefferd ◽  
J. S. Rogerson ◽  
D. E. Copp ◽  
R. L. Brundle ◽  
M. A. Huntly
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Exhaust Emissions ◽  
Engine Fuel ◽  
Heavy Duty ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel ◽  
The Impact

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

Tumble Flow Measurements Using Three Different Methods and Its Effects on Fuel Economy and Emissions

2006 ◽  
Author(s):  
Myoungjin Kim ◽  
Sihun Lee ◽  
Wootae Kim
Keyword(s):  
Fuel Economy ◽  
High Performance ◽  
Gasoline Engine ◽  
Exhaust Emissions ◽  
Combustion Stability ◽  
Lean Burn ◽  
Flow Measurements ◽  
Part Load ◽  
Gasoline Engines ◽  
Dynamometer Test

In-cylinder flows such as tumble and swirl have an important role on the engine combustion efficiencies and emission formations. In particular, the tumble flow, which is dominant in-cylinder flow in current high performance gasoline engines, has an important effect on the fuel consumptions and exhaust emissions under part load conditions. Therefore, it is important to know the effect of the tumble ratio on the part load performance and optimize the tumble ratio of a gasoline engine for better fuel economy and exhaust emissions. First step in optimizing a tumble flow is to measure a tumble ratio accurately. In this research the tumble flow was measured, compared and correlated using three different measurement methods: steady flow rig, 2-Dimensional PIV, and 3-Dimensional PTV. Engine dynamometer test was performed to find out the effect of the tumble ratio on the part load performance. Dynamometer test results of high tumble ratio engine showed faster combustion speed, retarded MBT timing, higher exhaust emissions, and a better lean burn combustion stability. Lean limit of the baseline engine was expanded from A/F=18:1 to A/F=21:1 by increasing a tumble ratio using MTV.

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