Vol-4 Issues 11, November -2020 ISSN: 2456-9348 Impact Factor: 4.520 International Journal of Engineering Technology Research & Management IJETRM (http://ijetrm.com/ ) [34] DESIGNING OF COMMON RAIL FUEL INJECTION SYSTEM SIMULATOR Abdul Muis 1 Hidayat Hidayat 1,* Abdul Halik 1 Darma Aviva 1 Dwi Cahyadi 2 1 Department of Mechanical Engineering, Politeknik Negeri Samarinda, Indonesia 2 Department of Design, Politeknik Negeri Samarinda, Indonesia *email : hidayat@polnes.ac.id ABSTRACT A typical rail injector is a direct injection system designed around a high-pressure fuel rail feeding solenoid instead of a low-pressure pump feed injector (or pump nozzle). The common rail injection system A fuel supply system in which a typical manifold or rail is supplied by two or more high-pressure pumps. Timing valves specify the timing and degree of fuel delivery to the cylinder injectors. Common rail technology advantages are smokeless operation, lower, steady running speeds (down to about 10 rpm for 2-stroke engines) and reduced fuel consumption at part-load. For mechanical injection systems, the fuel injection pressure is a function of the engine speed and engine load. As the injection pressure decreases at lower loads, the fuel droplets grow larger and there is not enough time for these droplets to complete combustion. The effect would be black smoke. A manifold running along the engine's length at just below the cylinder cover level is the common rail. A microcontroller-based electronic control fuel system simulator with the EUI C-4.4 Caterpillar engine platform has been completed. The Electronic Engine system, and particularly the EUI Engine C-4.4 (Electronic Unit Injectors) system can be recognized and understand by this simulators. KEYWORDS: Common rail, injection system, engine, caterpillar, simulator. INTRODUCTION 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. Smokeless operation, lower, steady running speeds (down to around 10 rpm for 2-stroke engines) and reduced fuel consumption at part- load are the advantages of common rail technology. The fuel injection pressure for mechanical injection systems is a function of engine speed and engine load. The fuel droplets grow larger as the injection pressure drops at lower loads, and there is not enough time for these droplets to complete combustion. Black smoke are the result. A manifold running at just below the cylinder cover level along the length of the engine is the common rail. It provides the fuel oil with a certain storage volume, and has provisions for damping pressure waves. Fuel is supplied to the regular fuel injection valves from the common rail via a separate injection control unit for each engine cylinder. The control units regulate the fuel injection timing, control the injected fuel volume, and set the shape of the injection pattern. In each cylinder cover, the three fuel injection valves are independently operated so that they can be programmed to function separately or as required in unison. Many researchers conduct study common rail fuel system. Experiments were performed to investigate the effect of injection pressure and timing of injections on the temporal evolution of injection rate and length of injection in a specially built experiment rig fitted with a standard rail injection system [1]. Results and discussion on experimental studies on high-speed direct injection light-duty diesel engine test beds are presented for evaluation and review of the effects on all controlled emission gases and torque output of key adjustable parameters of the system of fuel injection [2]. To observe the spray evolution, a constant volume chamber and high-speed camera were used and a common-rail system was used to adjust the injection pressure [3]. An accurate engine fuel injection quantity management technique for high-pressure common rail (HPCR) injection systems using an on-line calibration process based on iterative learning control (ILC) [4]. Commercial No. 2 diesel fuel, biodiesel (FAME) derived from waste cooking oil (B100), 20 percent biodiesel