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Delphi’s Revolutionary Direct Acting Diesel Fuel Injection System Making World Premiere on New Mercedes C-Class


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With More Torque and Power, Delphi Technology in Mercedes C250 Delivers Reduced Emissions and Improved Fuel Economy

PARIS -- Delphi Corporation (PINKSHEETS: DPHIQ) has announced that, following several years of development in cooperation with Daimler engineering teams, the new Mercedes C250 CDI will premiere Delphi’s revolutionary Direct Acting Piezo injector.

The new Direct Acting Common Rail (CR) from Delphi represents a radical break-through in diesel injection technology as, for the first time, the injector needle is directly activated by the piezo stack, removing the hydraulic circuit and its associated lag and energy consumption. This change enables vehicle manufacturers to comply with future emission legislations while providing more power and uncompromised fuel economy.

"Today, Delphi surpassed a major milestone in diesel technology history" said Jose Avila, general manager of Delphi Diesel Systems. "And there is no better way to write this new chapter than to be partnered with Mercedes-Benz, the company with the industry’s longest history in diesel engines"

Delphi’s Direct Acting CR system uses a patented direct-acting concept in which the injector needle is set in motion directly by a piezo ceramic actuator instead of being moved via an electro-hydraulic circuit as with existing fuel injection technologies. The piezo ceramic actuator directly operates the needle valve of the injector for initial lifts, such as those obtained in pilot injections, and a motion amplifier is used to help complete the lift for large injections. This enables the injector to spray fuel into the combustion chamber faster, with much improved spray momentum and accuracy, at higher pressures (up to 2,000 bar). It also provides extremely fast opening and closing of the needle valve, independent of injection pressure. With needle velocities reaching above 3 m/s or 3 times faster than today’s servo systems, the system allows seven (or more) injection events per engine cycle. Delphi’s hydraulic circuit design makes best use of the characteristics of piezo ceramic actuators: high force and speed with efficient packaging.

Thanks to high-precision multiple injections of fuel, the fuel injection process can be adapted to all engine loads and speeds with greater accuracy, which has a positive impact on emissions, consumption and combustion noise. By offering the ability to control the needle opening rate electronically and independently of hydraulic constraints, the engine calibrator is able to satisfy the conflicting requirements of noise optimization and minimization of exhaust emissions without compromise.

At idle, the Direct Acting injector concept makes no perceptible noise above the engine itself, which is a remarkable achievement when compared with today’s servo piezo injection systems.

Moreover, thanks to the innovative actuation concept, the injector’s radically new operating principle is also completely leak free. So, no high-pressure fuel is wasted into a return flow back to the tank, saving up to one kilowatt of lost energy used by today’s servo systems and removing the requirement of expensive fuel coolers even at a rail pressure of 2,000 bar.

Overall benefits include a considerable reduction in emissions, more torque and power across all engine speeds, and significantly improved fuel economy and refinement.

"With its excellent injection performance, Delphi’s Direct Acting Common Rail is an attractive fuel injection system and a unique tool to meet ambitious development targets of future diesel engines and exceed customer expectations" said Detlev Schoeppe, engineering director Delphi Diesel Systems.

The new C-Class’ unrivalled performance -- the application of Delphi’s ground-breaking technology

The new Mercedes C250 takes advantage of Delphi’s revolutionary technology to offer drivers improved engine output and torque while reducing emissions and fuel consumption.

Mercedes-Benz’s completely-new four-cylinder diesel engine, named OM 651, celebrated its world premiere at the Paris Motor Show on the C Class. Ultimately it will be produced in three versions: 150kW, 125kW and 100kW -- all with Delphi Diesel CR systems.

The OM 651 is being launched first in its 150 kW version on the Mercedes C250 CDI BlueEFFICIENCY, marking the debut of Delphi’s Direct Acting Piezo CR system.

To ensure the durability and robustness of its all-new power unit, Mercedes-Benz subjected the engine and fuel injection system to 100,000 hours on test rig and 10,000,000 test kilometres under conditions ranging from the desert to Polar regions. With its new generation of four-cylinder diesel engines, Mercedes-Benz is launching the first Euro 5 application and setting new standards in power output, torque, fuel consumption and exhaust emissions.

Delphi’s innovative diesel technology was developed in Delphi diesel technical centres in Blois, France, Gillingham, United Kingdom, and Bascharage, Luxembourg. The C-Class’ system is composed of a high-pressure pump, injectors, a rail and an electronic control unit (ECU). Employees at Delphi’s technical centre and manufacturing facility in Blois are dedicated exclusively to engineering and producing injectors for advanced common rail injection systems. With a "customer-orientated" approach and employing a Quick Response Room for rapid customer response, the Delphi team relies on a unique combination of people and processes to deliver this precision product.

Delphi Diesel portfolio: two solutions to better fit customers’ requirements

With the introduction of the Direct Acting Common Rail, Delphi now offers two families of Diesel CR Systems: The Delphi Multecâ„¢ Diesel Common Rail with the Balanced Valve Fast Servo Solenoid Injector and the Direct Acting CR with the Direct Acting Piezo Injector.

All key components of both families have been designed in a way that they can easily be interchanged. As such, one can switch from Fast Solenoid to Direct Acting injector technology without having to make any design change to the base engine. Pump and rail can be kept similar, and, having exactly the same packaging for both injector types, they can be interchanged without any changes to the base cylinder head.

The Balanced Valve Fast Servo Solenoid Injector family is capable of system pressures up to 2,000 bar. It is based on a unique injector design with balanced servo valve technology. The small size of this actuator allows it to be packaged in-line and in close proximity to the needle providing extremely fast actuation and precise metering.

"Because there are no significant differences in performance between Delphi’s balanced valve servo-solenoid and competitors’ unbalanced servo-piezo systems, Delphi’s Multec servo solenoid injector is the best value solution in the market today" said Avila. "In addition, Delphi’s Direct Acting delivers a unique performance/cost value proposition and a step-change in technology that provides considerable potential for further refinement"

"With the introduction of the Direct Acting diesel Common Rail technology, Delphi is able to deliver the best solution for the customers’ requirements: the Balanced-valve solenoid technology offering a high-performance, cost-effective solution for the majority of vehicles and the Direct Acting piezo for demanding applications that require high fuel flow with exceptional control" added Avila.

Delphi Diesel Systems business growth

Delphi has booked business for Euro 5 architectures that will significantly exceed its Euro 4 business. With more than 10 automotive diesel engines manufacturers having signed up for its Euro 5 systems and others targeted, Delphi has plans to produce more than 3,500,000 common rail systems each year and has announced a capacity expansion that includes a new plant in Iasi, Romania.

For more information about Delphi, visit www.delphi.com.

FORWARD-LOOKING STATEMENTS

This press release as well as other statements made by Delphi may contain forward-looking statements that reflect, when made, the Company’s current views with respect to current events and financial performance. Such forward-looking statements are and will be, as the case may be, subject to many risks, uncertainties and factors relating to the Company’s operations and business environment which may cause the actual results of the Company to be materially different from any future results, express or implied, by such forward-looking statements. In some cases, you can identify these statements by forward-looking words such as "may" "might" "will" "should" "expects" "plans" "anticipates" "believes" "estimates" "predicts" "potential" or "continue" the negative of these terms and other comparable terminology. Factors that could cause actual results to differ materially from these forward-looking statements include, but are not limited to, the following: the ability of the Company to continue as a going concern; the ability of the Company to operate pursuant to the terms of the debtor-in-possession financing facility, its advance agreement with GM, to obtain an extension of term or other amendments as necessary to maintain access to such facility and advance agreement, including the contemplated accommodation agreement, extension of the advance agreement with GM, and partial temporary accelerated payment agreement; the Company’s ability to obtain Court approval with respect to motions in the chapter 11 cases prosecuted by it from time to time; the ability of the Company to achieve all of the conditions to the effectiveness of those portions of the Amended and Restated Global Settlement Agreement and Amended and Restated Master Restructuring Agreement with GM which are contingent on Delphi’s emergence from chapter 11; the ability of the Company to obtain Court approval to modify its amended plan of reorganization which was confirmed by the Court on January 25, 2008 as set forth in its filing on October 3, 2008 and to confirm such modified plan or any subsequent modifications to the confirmed plan or any other subsequently confirmed plan of reorganization and to consummate such plan; risks associated with third parties seeking and obtaining Court approval to terminate or shorten the exclusivity period for the Company to propose and confirm one or more plans of reorganization, for the appointment of a chapter 11 trustee or to convert the cases to chapter 7 cases; the ability of the Company to obtain and maintain normal terms with vendors and service providers; the Company’s ability to maintain contracts that are critical to its operations; the potential adverse impact of the chapter 11 cases on the Company’s liquidity or results of operations; the ability of the Company to fund and execute its business plan as described in the proposed modifications to its plan of reorganization as filed with the Court and to do so in a timely manner; the ability of the Company to attract, motivate and/or retain key executives and associates; the ability of the Company to avoid or continue to operate during a strike, or partial work stoppage or slow down by any of its unionized employees or those of its principal customers and the ability of the Company to attract and retain customers. Additional factors that could affect future results are identified in the Annual Report on Form 10-K for the year ended December 31, 2007 filed with the SEC, including the risk factors in Part I. Item 1A. Risk Factors, contained therein, and the Company’s quarterly periodic reports for the subsequent periods, including the risk factors in Part II. Item 1A. Risk Factors, contained therein, filed with the SEC. Delphi disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events and/or otherwise. Similarly, these and other factors, including the terms of any reorganization plan ultimately confirmed, can affect the value of the Company’s various prepetition liabilities, common stock and/or other equity securities.



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