Browse Publications Technical Papers 2010-01-1472
2010-05-05

Increasing Power Density in HSDI Engines as an Approach for Engine Downsizing 2010-01-1472

In the context of CO₂ emission regulations and increase of energy prices, the downsizing of engine displacement is a widely discussed solution that allows a reduction of fuel consumption. However, high power density is required in order to maintain the power output and a good driveability.
This study demonstrates the potential to strongly increase the specific power of High Speed Diesel Injection (HSDI) diesel engines. It includes the technological requirements to achieve high specific power and the optimal combination of engine settings to maximize specific power. The results are based on experimental work performed with a prototype single-cylinder engine (compression ratio of 14). Tests were conducted at full load, 4000 rpm. Part load requirements are also taken into account in the engine definition to be compatible with the targets of new emission standards. The influence of boost pressure, peak in-cylinder pressure, injection pressure and nozzle flow rate on full load limitations (exhaust temperature and smoke level) is studied to define the technological requirements for a power density of 80, 85 or 90 kW/l.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
We also recommend:
TECHNICAL PAPER

Synergies of Cooled External EGR, Water Injection, Miller Valve Events and Cylinder Deactivation for the Improvement of Fuel Economy on a Turbocharged-GDI Engine; Part 1, Engine Simulation

2019-01-0245

View Details

TECHNICAL PAPER

Electric Low Pressure Fuel Pump Control for Fuel Saving

2013-01-0339

View Details

TECHNICAL PAPER

Improvement of Performance for Truck Diesel Engine by Multi Valve System

912463

View Details

X