Method and device for controlling transient-state injection of a supercharged diesel engine

摘要

The method includes the steps of generating a reference injection pressure value (PMAP) as a function of the speed (N) of a diesel engine (2) and of the quantity (Q) of fuel supplied to the engine (2), the reference injection pressure value (PMAP) defining an optimum injection pressure value for steady-state operation of the engine (2); generating an incremental injection pressure value (DPMAX) as a function of the speed (N) of the engine (2) and the supercharge pressure (Ps) of the engine (2), the incremental injection pressure value (DPMAX) defining the maximum permissible variation in injection pressure between one engine cycle and the next during a transient operating state of the engine (2); and generating a desired injection pressure value (Po) as a function of the reference injection pressure value (PMAP) and the incremental injection pressure value (DPMAX), and such that the variation in injection pressure during the transient operating state of the engine (2) does not exceed the maximum permissible value. <IMAGE>