Cummins common rail fuel injection system ppt

This is quite opposite to the fuel injection pump supplying diesel thruвЂ™ independent fuel lines to injectors in case of earlier generation ( DI) design. In the CRDi system, the fuel-rail constantly stores and supplies the fuelВ to the solenoid valve injectors at the required pressure. It maintains optimum residual fuel pressure and also acts as a shared fuel reservoir for all the injectors. They are opened by an ECU signal, depending upon the variables such as engine speed, load, engine temperature, etc.ДЇurthermore, a Common Rail system uses a fuel-rail or, in simple words, a 'fuel distribution pipe' that is common for all cylinders. Additionally, the conventional injectors are replaced with more advanced, electrically operated solenoid injectors. Versions of the ISX engine made after 2010 have a single camshaft system with a common rail fuel operation that relies on piston pumps to inject diesel. The fuel system features components that are more intelligent in nature and controls them electrically / electronically. High-pressure fuel injection system: The high-pressure Cummins ISX fuel pump system forms a clean and complete combustion phase. It then calculates the precise quantity of fuel and timing of injection. The CRDi technology works in tandem with the engine ECU, which gets inputs from various sensors. Today, manufacturers use CRDi technology to overcome some of the deficiencies of conventional diesel engines, which were sluggish, noisy, and poor in performance when implemented, especially in passenger vehicles.ДЇollowing is the schematic CRDi line diagram: Common Rail Direct Injection However, they considerably differ from each other on parameters such as pressure & type of fuel used.Д«esides, in Common Rail Direct Injection, the combustion occurs directly into the main combustion chamber located in a cavity above the piston crown. Both these technologies have a similarity in design since they consist of a 'fuel-rail' that supplies fuel to injectors. However, in diesel engines, manufacturers refer to this technology as CRDi, whereas Petrol engines term it as Gasoline Direct Injection ( GDI) or Fuel Stratified Injection (FSI). Both petrol and diesel engines use a common 'fuel-rail' which supplies the fuel to injectors. Most modern engine fuel systems use an advanced technology known as CRDi or Common Rail Direct Injection.

Cummins common rail fuel injection system ppt