Browse Publications Technical Papers 2009-01-1847
2009-06-15

The Effect of Injection Location of DME and LPG in a Dual Fuel HCCI Engine 2009-01-1847

Dimethyl ether (DME) as a high cetane number fuel and liquefied petroleum gas (LPG) as a high octane number fuel were supplied together to evaluate the controllability of combustion phase and improvement of power and exhaust emission in homogeneous charge compression ignition (HCCI) engine. Each fuel was injected at the intake port and in the cylinder separately during the same cycle, i.e., DME in the cylinder and LPG at the intake port, or vice versa. Direct injection timing was varied from 200 to 340 crank angle degree (CAD) while port injection timing was fixed at 20 CAD.
In general, the experimental results showed that DME direct injection with LPG port injection was the better way to increase the IMEP and reduce emissions. The direct injection timing of high cetane number fuel was important to control the auto-ignition timing because the auto-ignition was occurred at proper area, where the air and high cetane number fuel were well mixed. In the case of port injection with high cetane number fuel, performance was limited due to early or constant combustion phase as the amount of fuel injection was increased.

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.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

A Study on the Characteristics of Natural Gas Combustion at a High Compression Ratio by Using a Rapid Compression and Expansion Machine

2012-01-1651

View Details

TECHNICAL PAPER

Predicting Effects of DME on the Operating Range of Natural Gas-Fueled Compression Ignition Engines

2007-01-0620

View Details

TECHNICAL PAPER

A Study of Supercharged HCCI Combustion Using Blended Fuels of Propane and DME

2014-32-0005

View Details

X