Development of an Experimental Test Bench for an Electronically Control Fuel Injection System


  • Mohd Shahrul Nizam A Halim
  • Hazlina Selamat
  • Ahmad Jais Alimin Faculty of Mechanical & Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia
  • Mohd Taufiq Muslim Apt Touch Sdn Bhd, Johor, Malaysia



4-Cylinder Engine, Electronic Fuel injection, Engine Management System, Engine Signal Generator, Fuel Measurement Test Bench.


: Electronic fuel injection (EFI) system is a fuel delivery system that is controlled electronically with an electronic control unit (ECU) used in most modern vehicle’s engine. As the fuel injection runs on a vehicle engine, it is difficult to observe the overall behavior of the fuel injection system. A test bench for a 4-cylinder engine is generally developed to run the ECU without the real engine. The development of the test bench described in this paper includes the fabrication of the mechanical model of the test bench, the use of a signal generator for the input signals representing the various signals of an engine and the development of a computer control algorithm for the four-cylinder engine to provide optimum power and fuel efficiency for the engine. The input signal generation of the crankshaft signal and throttle position signal that are similar to the real signal provided by an engine is also discussed. The development of a cost-effective ECU that calculates the suitable amount of fuel to be delivered at correct timings and sequence is also explained. The important part of this paper is the control of the amount of time needed for the injectors to remain open to give the accurate amount fuel injected as well as to control the injection timing of a 4-cylinder engine sequence. The test bench can also be used for several experiments that require the measurement of fuel injected such as fuel injector performance test.


Hassani, A. and V. Hosseini, “An assessment of gasoline motorcycle emissions performance and understanding their contribution to Tehran air pollutionâ€, Transportation Research Part D: Transport and Environment, 2016. 47: pp. 1-12.

Abdo, E., Modern Motorcycle Technology. Vol. Second Edition. 2013, United State, America: Cengage Learning.

Overcash, D.A., L.E. Hall, and G.W. Mueller, “Throttle position sensorâ€, 1986, Google Patents.

"2002 Ford Explorer: 2002 Ford Explorer How Do I Install Tps Where ...",, 2017. [Online]. Available: questions/2002-ford-explorer-2002-ford-explorer--4. [Accessed: 29May-2017].

Schroeder, T., “Crankshaft position sensorâ€, 2002, Google Patents.

Aziz, A., “Electronic control unit (ECU) development of a fuel injection systemâ€, in Thesis (Sarjana Kejuruteraan (Elektrik - Mekatronik dan Kawalan Automatik)) - UniversitiTeknologi Malaysia, 2013. 2013, UniversitiTeknologi Malaysia.

Surnilla, G., H.B. Gangwar, and S.B. Smith, “Lean idle speed control using fuel and ignition timingâ€, 2005, Google Patents.

Hartman, J., How to Tune and Modify Engine Management Systems, 2004: Motorbooks.

Wade, A., Motorcycle Fuel Injection Handbook, MotorBooks International. Urich, M. and B. Fisher, Holley: Carburetors, Manifolds and Fuel Injection. 1994: HP Books.

Houston, R.D. and G.F. Chatfield, “Engine management systemâ€, 2003, Google Patents.

Rathore, V.D., “Use of CRDi/MPFi Technology in Automobilesâ€, International Journal of Scientific & Engineering Research, 2015. 6(6): pp. 1211-1213.




How to Cite

A Halim, M. S. N., Selamat, H., Alimin, A. J., & Muslim, M. T. (2017). Development of an Experimental Test Bench for an Electronically Control Fuel Injection System. ELEKTRIKA- Journal of Electrical Engineering, 16(3), 30–35.