ANN ARBOR, Mich., July 23 /PRNewswire/ -- Today, Detroit Diesel
Corporation (DDC) released additional information about its 2002 Series 50
engine program at a news conference in Ann Arbor.
Beginning October 2002, further enhancements to the already proven Series
50 engine will allow DDC to meet more stringent exhaust emissions standards of
2.5 gm/bhr-hr Nox + NMHC. The enhancements include new DDEC software for EGR
control, a higher efficiency EGR cooler, steel pistons for improved
durability, and new exhaust aftertreatment systems. Detroit Diesel first
introduced Exhaust Gas Recirculation (EGR) on the Series 50 engine in 2000.
Since then, over 3000 Series 50 EGR engines have been produced.
These newer technologies will provide up to a 90% reduction in particulate
exhaust emissions and a 50% reduction in NOx emissions compared to engines
produced as recently as 1999.
An oxidation catalyst exhaust aftertreatment system will be used to meet
the 49-state, 0.05 gm/bhp-hr particulate EPA urban bus standard. In those
situations where 'near zero' levels of particulate are desired, DDC's
Emitless(R) particulate filter aftertreatment system will be available as a
factory option in place of the catalyst. The Series 50 EGR engine with
Emitless particulate filter and ultra-low sulfur fuel will achieve less than
0.01 gm/bhp-hr particulate emissions.
Detroit Diesel originally released the Emitless particulate filter for
urban bus retrofit in 2001. Since then, several hundred units have been
placed in revenue service. Along with the Emitless particulate filter, DDC
supplies an exhaust back-pressure sensor kit operated with DDEC IV software in
order to facilitate filter maintenance and diagnostics.
Dave Sarcona, Manager of Series 50 Engineering comments, "The urban bus
market demands superb engine performance and reliability. Our engineers and
technicians have over four years of experience developing EGR systems, and DDC
has a proven support network including our distributors and regions for parts,
service, and training. We are in a good position going forward with the new
EGR product.
"Another factor that has been key to 2.5gm EGR development is the
cooperation we've received from some of the major U.S. transit authorities
toward our field test programs. Fifteen Series 50 2.5gm engines are in
revenue service in New York City, Las Vegas, and New Orleans experiencing
operation in a wide range of duty cycles and environments. All are performing
remarkably well. Ann Arbor Transit Authority (AATA) has their first Series 50
EGR-powered bus in revenue service and is now completing their first 2.5gm EGR
engine installation with a particulate filter. The AATA will be the first
public transit fleet in the Midwest to run exclusively with Ultra Low Sulfur
Fuel which, as in New York City, enables application of the Emitless
particulate filter."
Detroit Diesel Corporation, headquartered in Detroit, Michigan, is engaged
in the design, manufacture, sale and service of heavy-duty diesel and
alternative fuel engines, automotive diesel engines and engine-related
products. The company offers a complete line of engines from 22 to 13,000
horsepower for the on-highway, off-road and automotive markets and is a QS-
9000 certified company. Detroit Diesel services these markets directly and
through a worldwide network of more than 2,700 authorized distributor and
dealer locations. Detroit Diesel is a subsidiary of DaimlerChrysler AG, the
world's leading manufacturer of heavy-duty diesel truck engines. Within
DaimlerChrysler AG, DDC is part of the Powersystems Business Unit.
SOURCE Detroit Diesel Corporation
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Related links:
http://www.detroitdiesel.com
Company News On-Call:
http://www.prnewswire.com/comp/239425.html
CONTACT:
Sheree Greenhalge of Detroit Diesel
Corporation, +1-313-592-5170, Fax: +1-313-592-8176, E-mail:
sheree.greenhalge@detroitdiesel.com
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