Delphi also presenting paper co-written with Renault and other partners on emissions reduction

Release Date: October 02, 2008

AACHEN, GERMANY -- To complement its full line-up of powertrain technologies, Delphi Corp. (PINKSHEETS: DPHIQ) will display its new spray-stratified gasoline direct injection (GDi) system that reduces CO2 emissions at significantly lower costs than traditional systems Oct. 6-8 at the Aachen Colloquium congress. In addition, Delphi will present a paper written in conjunction with Renault and other partners on exhaust system emissions reductions.

During the prestigious show, Delphi will showcase its spray stratified GDi injector, named Multec 20. With solenoid technology that delivers outstanding spray performance, Delphi's spray stratified GDi system improves fuel economy while reducing engine noise and harmful emissions. Spray stratified GDi, also known as "lean" burn GDi, uses less fuel by creating a stratified charge with a stoichiometric air-fuel ratio near the spark plug with no fuel outside the mixture plume in the remainder of the chamber. "Delphi's spray stratified GDi will deliver all the performance OEMs need at significantly lower cost than piezo injectors," said Delphi's Dr. Walter Piock, chief engineer for advanced powertrains. "As a cost-effective and robust solution, Delphi's Multec 20 is fuel-injection technology's next big advancement."

Conventional spray stratified GDi systems employ a relatively costly piezo element as the principal actuating mechanism. In contrast, Delphi engineers have developed a cost-effective, fast single coil actuator. Along with reducing fuel injector noise, Multec 20 benefits include a very repeatable and robust spray behavior, minimized tip deposits and an enhanced linear flow range.

In addition to the injector, Delphi's spray stratified GDi system also includes a high-pressure fuel pump, fuel rail, multi-spark ignition system, electronic control module and a wide-range oxygen sensor.

Along with the new GDi technology, Delphi will show a wide array of powertrain technologies, including:

• Homogeneous GDi including the Multec 10 injector - Featuring a multi-hole spray generator, Delphi's Multec 10 GDi multi-hole fuel injector is a flexible, cost- and performance-optimized injector capable of high pressure. Delphi's homogeneous GDi system is applicable for gasoline engines of any size, including small-displacement turbo-charged engines and large-displacement engines. Small particles in the spray allow optimum charge distribution for future combustion processes such as gasoline homogeneous charge compression ignition (HCCI).
• Transmission electro-hydraulic control modules (TEHCM) - TEHCM is a complete control system for hydraulic fluid flow and contains actuators, electronics, sensors and electrical and hydraulic connections. The actuators are precision-matched to the controllers to ensure very precise control of the transmission.
• Direct Acting Diesel Common Rail System - In the recently unveiled patented diesel system, the injector needle is set in motion directly by a piezo ceramic actuator enabling the injector to spray fuel into the combustion chamber faster and with improved spray momentum and accuracy.

Rounding out its participation at Aachen Colloquium, Delphi is presenting a paper titled, "Comparative study in LTC combustion between a short HP EGR loop without cooler and a Variable Lift and Duration system." Created as part of Europe's New Integrated Combustion System for Future Passenger Car Engines (NICE) program, the paper was written with representatives from Delphi and the following organizations:

• The IFP (France) - a public research and training firm whose mission is to develop technologies and materials of the future in the fields of energy, transport and the environment. For more, visit www.ifp.fr.
• Renault Powertrain Division (France) - which designs the engines and gearboxes used in all Renault vehicles. For more, visit www.renault.com.
• Mechadyne (UK) - researches and develops advanced valve-train systems for internal combustion engines. For more, visit www.mechadyne-int.com.

An excerpt directly from the paper:
"The aim of this paper is firstly to compare the double lift exhaust system with a short-route high-pressure exhaust gas recircualtin (EGR) loop without cooler by quantifying their respective gains on steady state points of the New European Driving Cycle, then by evaluating their potential performances during transient conditions. With the short-route EGR, the potential in hydro-carbon-carbon oxide (HC-CO) emission reduction remains significant on a large scale of engine temperatures representative of engine warm-up. However, the valve lift and duration (VLD) system allows us to achieve an advantageous higher burnt gas temperature at idle speed (HC-CO emissions reduced by 35 percent) and at low engine temperature. Even more, the VLD system's faster response time detailed in this study offers new possibilities in burnt rate transient control, especially in association with a low-pressure EGR loop."

About Aachen Colloquium
The Aachen Colloquium has become the largest automotive and engine technology congress in Europe. In 2007, the congress welcomed 1,800 participants from 25 countries. More information can be found at www.aachener-kolloquium.de/index_e.htm.

About Delphi
Delphi is a leading global supplier of mobile electronics and transportation systems, including powertrain, safety, steering, thermal, and controls & security systems, electrical/electronic architecture, and in-car entertainment technologies. Engineered to meet and exceed the rigorous standards of the automotive industry, Delphi technology is also found in computing, communications, consumer electronics, energy and medical applications.

Headquartered in Troy, Mich., Delphi has approximately 159,000 employees and operates 153 wholly owned manufacturing sites in 34 countries with sales of $22.3 billion in 2007. Delphi can be found on the Internet at www.delphi.com.

FORWARD-LOOKING STATEMENTS
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For more information contact:Delphi
John Wray
1.248.732.0614