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Method of Controlling Common Rail Fuel Injection Device

Delphi Multec® Light Duty Diesel Common Rail System

6/16/2017 10:11 AM  | Author: Ellin

The system features balanced valve, extremely fast actuating servo-solenoid injectors, which deliver precise metering and performance similar to competitive servo-piezo technologies, but at lower cost. Delphi high pressure fuel pump, which may be included in the system, offers best-in-class volumetric efficiency, well above 90 percent at very high pump speed. The compact size of the DFP6 pump and injectors allows packaging flexibility with reduced weight. And, the system also includes Delphi's patented Individual Injection Characterization (I3C) control strategy, which helps provide optimal control of multiple injections over the life of the engine to help maintain low noise and reduced emissions.

The key elements of the Delphi Multec Light Duty Diesel Common Rail System include:

  • Compact, state-of-the-art fuel injectors for best possible packaging (17 mm, or 19 mm pencil diameter)
  • High pressure modular pump range (0.3 to 1.2 cm3/rev). The DFP6 single plunger pump enables operation up to 2,000 bar, with the inherent capability of 2,200 bar
  • DFP6 roller cam shoe mechanism optimized for reduced torque, dynamic mass and noise via the patented Delphi static shoe guide
  • Proven, tubular-shaped common rail
  • Reliable electronic control unit (ECU) with 32-bit processor
  • Filter customized to application requirements to ensure performance over the life of the engine

Delphi now offers a new family of Diesel fuel injection equipment that offers improved performance through increased injection pressure--up to 2,500 bar--leakage reduction, and increased multiple injection optimization because the injectors are capable of up to nine injections per cycle. These innovations translate into better injection control and better combustion, thus reducing fuel consumption, CO2 and other emissions. The new system is not yet in production. Contact Delphi for further information.

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