The Delphi E3 Diesel Electronic Unit Injector (EUI) is one of the world’s most advanced production diesel unit injectors for high performance heavy duty applications. It is the flagship of Delphi’s extensive range of high quality EUI products, which are designed to fit the same injector pocket. Delphi is a source for high value solutions and our systems expertise is built into every product. This allows manufacturers the freedom to meet a variety of emissions standards with the same cylinder head design. And, Delphi has a thorough understanding of markets around the world and a global network of resources.
The Delphi E3 Diesel Electronic Unit Injector (EUI) is one of the world’s most advanced production diesel unit injectors for high performance heavy duty applications. It is driven by the engine’s overhead camshaft, with one EUI per cylinder. The Delphi E3 EUI helps achieve extremely low smoke/particulate levels at any engine load and speed and, thus, helps reduce the need for large and costly aftertreatment devices. The Delphi E3 EUI integrates a high pressure pump and separately controlled nozzle needle into a single fuel injection device. It is driven by the engine’s overhead camshaft, with one EUI per cylinder. Kettering’s 1951 ASME presentation goes into detail about the development of the modern Unit injector. The Delphi Advantage Delphi is a world leader in innovation, design and the manufacture of heavy duty diesel fuel systems. patent No.1,981,913 on the unit injector design later used for the General Motors two-stroke diesel engines. The pressure determines how much fuel the injectors get and the time is determined by the cam. The Delphi E3 EUI integrates a high pressure pump and separately controlled nozzle needle into a single fuel injection device. Delphi’s flexible engineering approach encourages collaboration. 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. The Delphi E3 EUI is designed to help manufacturers meet the world’s most stringent emissions regulations. E.W. Specifications: (Chart) Plunger diameter range 9 mm to 11 mm Stroke range Up to 19 mm Engine cylinder capacity 1.5 L to 2.6 L Peak pressure 2,500 bar Weight 1.1 kg Drive voltage 50 V (operates on 12 V and 24 V vehicles) Performance Advantages The Delphi E3 Diesel Electronic Unit Injector provides a major advantage for diesel engine manufacturers in meeting extremely stringent future emissions requirements. Delphi’s E3 EUI dual valve design offers enhanced fuel delivery control at high-speed, ultra high pressure operation and many advanced features including a flexible injection capability enabling pilot, post and split injections to reduce engine noise and exhaust emissions.
Commercial usage of unit injectors in the United States began in early 1930s on Winton engines powering locomotives, boats, even US Navy submarines, and in 1934, Arthur Fielden was granted U.S. Also Cummins PT (pressure-time) is a form of unit injection where the fuel injectors are on a common rail fed by a low pressure pump and the injectors are actuated by a third lobe on the camshaft. And with optimized hydraulic performance and one million miles durability, it represents a significant advancement in heavy duty diesel fuel injection technology. Delphi’s E3 EUI dual valve design offers enhanced fuel delivery control at high-speed, ultra high pressure operation and many advanced features including a flexible injection capability enabling pilot, post and split injections to reduce engine noise and exhaust emissions. Most mid-sized diesel engines used a single pump and separate injectors, but some makers, such as Detroit Diesel and Electro-Motive Diesel became well known for favoring unit injectors, in which the high-pressure pump is contained within the injector itself. Delphi has many years experience in the heavy duty market and a long history of working closely with engine manufacturers.
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