Powertrain Systems

The Delphi F2 Distributed Pump Diesel Common Rail System (F2 System) is a new concept in diesel common rail technology and is the world's first ultra high pressure common rail system to be mounted entirely within an engine's cylinder head. In addition to offering a high performance solution for new engines, the F2 System also provides a cost effective upgrade path for existing Electronic Unit Injector (EUI) engines.

The distributed pump diesel common rail system utilizes two types of injectors. "Non-pumping" injectors act like traditional common rail injectors whereas "pumping" injectors also contain separate pumping elements driven by the overhead cam, which pressurize the rail. The number of pumping elements is no longer fixed to the number of injectors and may, therefore, be optimized according to the power requirement of each application. This pressurized rail provides the injectors with a constant source of ultra high pressure fuel at any engine speed, allowing fully flexible injection capability, particularly related to close coupled small quantities.

Benefits

• Space saving design enables packaging entirely within the cylinder head
• High energy efficiency
• Delphi's robust, proven electronic unit injector pumping system combined with new ultra high pressure common rail injector technology
• Wide range of nozzle options are available
• Scalable distributed pump design enables a variety of pumping combinations and non-pumping injectors to be installed for different power ratings
• Fully flexible injection capability
• Small quantity injection control
• Close coupled multiple injection capability
• Low mechanical noise
• Ultra high pressure capability (up to 3,000 bar) provides the potential to minimize the need for aftertreatment devices
• On board diagnostics and dynamic trimming capability
• Target emissions: Euro VI, post-US 10, post-Japan NLTR, Tier IV
• Dynamic selective replacement of pumping injectors provides enhanced operating efficiency

Typical Applications

The Delphi F2 Distributed Pump Diesel Common Rail System is suitable for nine to 16 liter heavy duty diesel engines that are used for on- and off-highway applications.

Specifications

Performance Advantages

The Delphi F2 Distributed Pump Diesel Common Rail System is the ultimate common rail solution for new engines and for upgrading existing electronic unit injector engines. With Delphi's F2 System, the number of pumping elements is no longer fixed to the number of injectors and, therefore, they may be optimized according to the power requirement of each application.

The Delphi F2 Distributed Pump Diesel Common Rail System allows engine manufacturers to combine the benefits of ultra high pressure and fully flexible injection for optimized combustion across the engine speed range. This reduces the need for expensive aftertreatment systems and maximizes engine efficiency.

The Delphi Advantage

Delphi is a world leader in innovation, design and the manufacture of heavy duty diesel fuel systems. Delphi has many years experience in the heavy duty market and a long history of working closely with engine manufacturers. Delphi heavy duty diesel fuel systems can be found on millions of engines around the world.

As a global leader in engine management systems, Delphi can help manufacturers meet emissions requirements, improve fuel economy and enhance performance. Delphi is a source for high value solutions and our systems expertise is built into every product. Delphi's flexible engineering approach encourages collaboration. And, Delphi has a thorough understanding of markets around the world and a global network of resources.