Browse Publications Technical Papers 2009-24-0126
2009-09-13

Experimental Investigation of the Benefits of Cooled and Extra-cooled Low-Pressure EGR on a Light Duty Diesel Engine Performance 2009-24-0126

The present paper describes an experimental study on the application of a Low Pressure EGR system, equipped with an high efficiency cooler, to a LD diesel engine operating with both conventional combustion and PCCI mode.
The research activity is aimed to carry out an analysis of the potentiality of the cooling (with engine water at 90°C) and super-cooling (with external water at 20°C) of the low pressure EGR flow gas on the simultaneous reduction of fuel consumption and pollutant emissions. The effects were evaluated running the engine with diesel conventional combustion and PCCI mode in several engine operating points.
The employed engine was a 4-cyliders LD CR diesel engine of two liters of displacement at the state of art of the current engine technology.
The overall results identified benefits on both the fuel consumption and emissions with the use of a low pressure EGR system with respect to the “classical” high pressure EGR one. The cooled EGR system showed advantage mainly at medium and high speed/load operating points.

SAE MOBILUS

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

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 17% off list price.
Login to see discount.
We also recommend:
JOURNAL ARTICLE

Acidic Condensation in Low Pressure EGR Systems using Diesel and Biodiesel Fuels

2009-01-2805

View Details

JOURNAL ARTICLE

Effects of Rail Pressure, Pilot Scheduling and EGR Rate on Combustion and Emissions in Conventional and PCCI Diesel Engines

2010-01-1109

View Details

TECHNICAL PAPER

Potential of Common Rail Injection System for Passenger Car DI Diesel Engines

2000-01-0944

View Details

X