Common-rail injection system. marine. A fuel supply system in which two or more high-pressure pumps supply a common manifold or rail. Timing valves determine the timing and extent of fuel delivery to the cylinder injectors. The benefits of common rail technology are smokeless operation, lower, stable running speeds (down to about 10 rpm for 2 Note: The aim of this document is to provide generic information concerning all Delphi Common Rail systems. The Common Rail injection system has been developed to do the following: • Reduce noise. • Reduce polluting emissions. • Reduce fuel consumption. • Increase performance. 1.1 REDUCING NOISE The chapter shows a typical high-pressure common rail high-pressure pump system structure. The high-pressure rail can be used as an accumulator to reduce the pressure fluctuation during the fuel supply of a high-pressure pump and fuel injection of an electronically controlled injector. Common rail direct injection system line diagram Components of CRDI Fuel injection pump-pressurizes fuel to high pressure High-pressure pipe-sends fuel to the injection nozzle Injection nozzle- injects the fuel into the cylinder Feed pump-sucks fuel from the fuel tank 1.5 Common Rail System And Supply Pump Transitions zThe world's first common rail system for trucks was introduce d in 1995. In 1999, the common rail system for passenger cars (the HP2 supply pump) was introduc ed, and then in 2001 a common rail system using the HP3 pump (a lighter and more compact supply pump) was introduced. 2.1 Fuel Injection principles Over the years, different techniques have been used for fuel injection in Scania diesel engines. The most commonly used techniques, at the current date, are PDE and HPI, which both are so called unit injector systems. XPI, which is a common rail system, will be used 4th Gen Diesel Common Rail Injection System"Euro 5" - Einspritzsystem "Optimal" Shape for PC Engines Ösophisticated closed loop fuel metering control Öinnovative, delivery controlled high pressure pump platform • Advantages Ösmall Q hyd and passive rate shaping to pull down In common rail systems, a high-pressure pump stores a reservoir of fuel at high pressure — up to and above 2,000 bars (200 MPa; 29,000 psi). The term "common rail" refers to the fact that all of the fuel injectors are supplied by a common fuel rail which is nothing more than a pressure accumulator where the fuel is stored at high pressure. Detailed modeling of common rail fuel injection process Citation for published version (APA): Seykens, X. L. J., Somers, L. M. T., & Baert, R. S. G. (2005). Detailed modeling of common rail fuel injection Published: 01/01/2005 Document Version: Publisher's PDF, also known as Version of Record (includes final page, issue and volume numbers Common Rail is an EDC controlled injection system The ECU controls & monitors the complete injection process The sensors delivers all the measured values which are required in the process fCOMMON RAIL FUEL INJECTION SYSTEM Summary Components of CRFIS are: Pre-supply pump High-pressure pump High-pressure accumulator (rail) Pressure-control valve Heavy Duty XPI Fuel System. The Cummins HD XPI System is a common rail system that provides the highest injection pressure of any other common rail system. Primarily targeted for mid-range and heavy-duty applications, the XPI system is the result of Cummins market leading technology. The XPI provid