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Originally Posted by revvedup  Can you please elaborate ? If my assumption is right you are saying that after a point the injectors are not able to inject more fuel to compensate for the increased air that is now entering the engine. Can we not fit in injectors of the 90 BHP version of this engine used in the Linea which have the capability to supply more fuel due to the fact that they fire more no. of times per main injection. |
Based on what I have read CRDi engines tend to use a high pressure fuel pump and use a common rail to pump in fuel to the injectors at extremely high pressures. The injectors are fired multiple times to get the desired quantity of fuel into the cylinder this is what I am assuming is a limiting factor to the additional quantity of fuel going into the system.(I may be wrong here please educate me if I am.)
As far as the add on modules that you get tend to increase fuel pressure and also some units tend to increase the injection pulse duration to increase the power output of the engine.