ABSTRACT
This chapter illustrates the main features of the modern mechatronic concept of common rail fuel injection systems (CRFIS) using an injection system for a diesel engine working with pressure in the range of 1000–2000 bar. A successful tuning of a CRFIS needs a huge amount of simulation sessions, which alternate with software validation by HiL simulations. A simple way of reducing the overall computation time is the Discrete Partitioning Technique. The principle of this procedure is to divide the complete injection system into smaller subsystems and perform a co-simulation between the master and slave systems. The chapter contains mainly the results of the numerical simulation performed by Amesim for a typical piezo inline injector developed by a few companies for high-quality diesel engines. The simulation results show high precision of the injection timing, rate, and duration offered by a two-stage solenoid actuated common rail diesel fuel injection systems.
