Benefits of diesel detergency in modern diesel fuel injection systems

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Benefits of diesel detergency in modern diesel fuel injection systems

Bhatti, Nadia / Caprotti, Rinaldo / Balfour, Graham

Modern diesel Fuel Injection Equipment (FIE) is prone to form a range of different types of deposits e.g. carbonaceous, soaps and ash containing. These deposits can occur at different locations within the FIE system and in particular in the nozzle spray holes and inside the injector body. Formation of these deposits is not restricted to one particular type of mechanism. On the contrary, a variety of mechanisms, collectively or in isolation, can lead to deposit formation. These phenomena can occur in Passenger Car (PC) and Heavy Duty (HD) vehicles and reported incidences are increasing. This paper describes FIE deposits developed in modern Euro 4/5 PC and Euro V HD engines. It was observed that engine performance can be significantly impacted by the formation of deposits, typified by increased fuel consumption, loss in power and poor drivability. The selection of appropriate fuel additive technology allows effective control of all these deposits, either by preventing their formation or by restoring the designed engine performance.