Powertrain Systems

The Delphi Diesel Electronic Unit Pump (EUP) is a proven fuel injection system for heavy duty engines with cam shafts situated in the cylinder block.  The EUPs, one per cylinder, are driven from an additional lobe on the camshaft.  They are arranged along the engine and connected to the injectors by equal-length high-pressure pipes.

The Delphi Diesel EUP technology is similar to the Delphi Electronic Unit Injector (EUI).  Each injector is fed fuel by a solenoid-controlled spill valve situated in the body of the EUP.  The actuator is controlled by an electronic control unit (ECU) that receives continuous signals from various sensors located around the engine and compares the information with optimum values.  The ECU then sends appropriate signals to the actuator enabling it to deliver the precise amount of fuel at the exact time required by the engine.

The Delphi Diesel Electronic Unit Pump features:

• 2,000 bar peak pressure injection
• Control valve integrated within the EUP body
• Electronic pilot injection
• Fully flexible electronic control
• Shot-to-shot fuel adjustment

Benefits

• Helps manufacturers meet Euro III and Euro IV emissions standards, with potential for Euro V and US 07
• Optimal efficiency
• Reduced noise
• Effective transient control and improved driveability
  

Typical Applications

The Delphi Diesel Electronic Unit Pump is designed for heavy duty diesel applications and is suitable for both overhead and cam-in-block engines.  Delphi recognizes that overhead camshaft engines offer efficiency, but cam-in-block engines also offer other benefits including suitability for low profile engines.  Thus, Delphi designed the Diesel EUP to meet manufacturer needs for both types of engines.

Performance Advantages

The Delphi Diesel Electronic Unit Pump has a 2,000 bar peak injection pressure to help manufacturers of low-profile engines to meet the latest emissions regulations and to provide a base for development of Euro IV- and Euro V-compliant engines.

The Delphi EUP is more easily retrofitted to existing engines because the bulk of the design is remote from the cylinder head and related drivetrain components.

Specifications

The Delphi Advantage

Delphi is an industry leader in diesel fuel injection technology and actively involved in the development of advanced diesel technology that can help manufacturers meet stringent emissions requirements while enhancing fuel economy and providing robust performance.  Extensive experience in high-pressure fuel injection technology has helped Delphi develop several strategies that provide cost-competitiveness, high-value, low noise and the ability to deliver accurate injection over the life of the vehicle.

Delphi has 15 diesel design and engineering centers located in Europe, Asia, North America and South America, and 21 diesel manufacturing facilities in 13 countries enabling exceptional on-time delivery.