Process for determining the film of fuel deposited on the intake manifold of electroinjector engines with controlled ignition

摘要

Process for the quantitative determination of gasoline film deposited on the intake manifold of an engine with controlled ignition, which comprises the following steps:a) feeding of a first set of injectors (I) with a first fuel selected from those which do not leave deposits in the feeding manifold;b) opening of the second set of injectors (II) fed with a second fuel to be tested, until an equilibrium stage of the air/fuel ratio equal to that of step (a) is reached;c) calculation of the mass of fuel film by integrating the difference in the flow-rate values measured in step (b).