Diesel Engine Fuel Economy Improvement Enabled by Supercharging and Downspeeding

2012 ◽  
Vol 5 (2) ◽  
pp. 483-493 ◽  
Author(s):  
Sean Keidel ◽  
Philip Wetzel ◽  
Brandon Biller ◽  
Karen Bevan ◽  
Aaron Birckett
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Engine Fuel ◽  
Fuel Economy Improvement

Effect of an ORC Waste Heat Recovery System on Diesel Engine Fuel Economy for Off-Highway Vehicles

2017 ◽  
Author(s):  
Apostolos Karvountzis-Kontakiotis ◽  
Apostolos Pesiridis ◽  
Hua Zhao ◽  
Fuhaid Alshammari ◽  
Benjamin Franchetti ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Engine Fuel ◽  
Waste Heat Recovery System ◽  
Recovery System ◽  
Heat Recovery System

Lubricants That Optimize Diesel Engine Fuel Economy and Allow Extended Oil Drains

2001 ◽  
Author(s):  
J. A. Mc Geehan ◽  
W. Alexander ◽  
M. C. Couch ◽  
J. A. Rutherford ◽  
S. H. Roby
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Engine Fuel

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

Modeling of Compressed Air Hybrid Operation for a Heavy Duty Diesel Engine

2008 ◽  
Author(s):  
Xiaoyong Wang ◽  
Tsu-Chin Tsao ◽  
Chun Tai ◽  
Hyungsuk Kang ◽  
Paul N. Blumberg
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Internal Combustion Engines ◽  
Compressed Air ◽  
Valve Timing ◽  
Heavy Duty ◽  
Vehicle Simulation ◽  
Heavy Duty Diesel Engine ◽  
Fuel Economy Improvement ◽  
Heavy Duty Diesel

Internal combustion engines can be modified to operate regenerative braking cycles by using compressed air power. This paper presents a particular air hybridization design from among many possible configurations. The engine cycles are enabled by a highly flexible engine valvetrain, which actuates engine valves to generate desired torque with optimal efficiency. A lumped parameter model is developed first to investigate the cylinder-tank mass and energy interaction based on thermodynamic relationships and engine piston kinematics. Special consideration is given to the engine valve timing and air flow. A high fidelity, detailed model using the commercially available GT-Power software is developed for a commercial 10.8 liter heavy-duty diesel engine with a 280 liter air tank in order to capture the effects of engine friction, heat transfer, gas dynamics, etc. The model is used to develop optimal valve timing for engine control. The established engine maps are incorporated into the ADVISOR vehicle simulation package to evaluate the potential fuel economy improvement for a refuse truck under a variety of driving cycles. Depending on the particular driving cycle, the simulation has shown a potential 4% – 18% fuel economy improvement over the truck equipped with the conventional baseline diesel engine.

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