Engine Operation on Dimethyl Ether in a Naturally Aspirated, Dl Diesel Engine

Rasmus Christensen; S. C. Sorenson; Michael G. Jensen; Ken Friis Hansen

doi:10.4271/971665

1997-05-01

Engine Operation on Dimethyl Ether in a Naturally Aspirated, Dl Diesel Engine 971665

A naturally aspirated, direct injection diesel engine was modified in order to be run on dimethyl ether (DME), with a conventional pump-line-nozzle system. The effects of various modifications to engine timing and the injection system as well as EGR were experimentally determined. Compared to the original diesel engine, the NO_x emissions were reduced by over 70% through the use of suitable timing, lowered injector opening pressure and EGR. Particulate emissions were very low, and represent over a 90% reduction as compared to the original diesel version.

The original pump-line-nozzle injection system was found to be not well suited to DME operation, CO and HC emissions were substantially higher due to secondary injections, caused by high pressure oscillations and residual pressure with the DME.

SAE MOBILUS

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

Access SAE MOBILUS »

Digital $37.00 Print $37.00

Preview Document

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

Engine Operation on Dimethyl Ether in a Naturally Aspirated, Dl Diesel Engine 971665

SAE MOBILUS