Delphi Details Latest Strategies for Gasoline and Diesel At I.Mech.E Engineering Conference in London







Published by Gerald Ferreira Date: March 14, 2012
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Delphi specialists present new approaches to reducing the cost of compliance with next-generation emissions regulations for all vehicle sectors

Delphi Remote Pump Common Rail System

LONDON - Delphi Automotive (NYSE: DLPH) will outline developments in its advanced gasoline and diesel fuel system technologies when it presents four technical papers during the Institution of Mechanical Engineers (I.Mech.E) Fuel Systems For Internal Combustion Engines Conference in London (March 14-15). The program, which focuses on the latest technology for state-of-the-art system design, characterization, measurement and modeling, brings together speakers and delegates from vehicle manufacturers, suppliers and research institutions.

To help address global fuel conservation efforts and increasing concerns about global warming, car makers are accelerating the introduction of technologies that reduce fuel consumption and cut emissions of all pollutants, while ensuring best engine performance and cost effectiveness. Injection technology plays a key part in helping to meet these challenges.

Delphi's papers will focus on techniques for reducing the cost of meeting tough emissions targets with particular reference to new control system architectures that deliver significantly improved performance and flexibility. The approach uses flexible software to allow improvements in emissions performance at a lower cost than alternative hardware-based strategies.

"Our work is driven by the need to create greener vehicles that are durable and enjoyable to drive, using cost-effective technologies that provide the flexibility needed by global platforms," said Steven A. Kiefer, president, Delphi Powertrain Systems. "State-of-the-art fuel injection equipment is one of the enabling technologies that help vehicle manufacturers produce the type of cars consumers want and governments demand. It's a growing, high-value market in which Delphi has considerable strength."

"Taking a fresh look at control architectures has allowed us to unlock new areas of innovation in almost every key area of diesel and gasoline fuel systems," said Bruno Annycke, Delphi's high pressure common rail pump deputy chief engineer, who will chair the conference's Light Duty Diesel session on March 14. "Control innovation has had a fascinating impact on our hardware design, allowing us to implement new approaches that offer substantial and affordable improvements in emissions without additional aftertreatment."

The first Delphi paper, "CO2 Savings Due to Electronically Controlled Fuel Pump in Fuel Delivery Modules" explains how new brushless, electronically controlled diesel fuel pumps can reduce CO2 emissions by up to 3g/km. The new pump will enter production during 2013 as part of the next generation of fuel delivery modules that allow high and low output pumps in the same package and help facilitate low-cost implementations of stop-start. Delphi's brushless pump will help reduce parasitic losses, improving fuel economy as well as contributing to reduced emissions.

The second paper, "Outwardly Opening Solenoid Injector for Homogeneous Gasoline Engines with Direct Injection", describes Delphi's outwardly opening solenoid fuel injector for homogenous GDi (gasoline direct injection) engines. Particular attention will be paid to techniques for reducing the number of particulate particles (very small combustion particles in the exhaust) to meet demanding government emissions targets such as Euro 6 phase 2 without costly additional aftertreatment of the exhaust. The introduction of this regulation is planned for the year 2017. The paper specifically addresses optimization of the injector hardware and control strategies to reduce cold-start emissions and concludes by discussing vehicle trials that validate the performance and cost-saving benefits of the new approach.

In the third paper, "Diesel Common Rail Fuel System Technology for High Efficiency Ultralow Emissions Medium-Duty Engines", Delphi presents the steps taken to produce ultra-low emissions with good fuel economy from medium-duty diesel engines. The world market for medium-duty diesel engines has very specific requirements, demanding high levels of durability, efficiency and robustness. The paper analyzes the critical differences between light-duty and medium-duty applications and discusses how this knowledge can identify appropriate areas of technology transfer from Delphi's proven light-duty systems.

The paper then looks at the areas of innovation needed to meet the specific requirements of the medium duty market, including high levels of reliability over a significantly greater vehicle lifetime to keep the vehicles on the road, earning money for their operators. The paper also presents Delphi's approach to engine management strategies that provide the company's customers with the versatility to support a range of emission-reduction technologies, such as low- and high-pressure exhaust gas recirculation, diesel particulate filters and selective catalytic reduction.

The fourth paper, "Ultra High Pressure Common Rail: Evolution of 3-way Solenoid Valve Injection Control", describes Delphi's approach to the design of a high-pressure common rail system for medium and heavy duty diesel applications. The new system combines a flexible architecture with precise control of injection events up to 3,000 bar, achieved using a new concept in three-way valve technology that required further advances in manufacturing technology. The design provides the foundations for products that go beyond Euro 6 to ensure extremely competitive systems for future requirements.