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Introduction The aim of the following article is to evaluate the workshop methods of testing injectors used in modern compression ignition engines. Various test benches and devices for fuel atomization process visualization were used to evaluate the effectiveness of the damage detection. Not only injectors are evaluated in terms of fuel dosage but also in the shape of the stream or atomization of droplets. A widely used automatic test in 4 operating points may lead to confusion when deciding about the reconditioning of the injector. The examinations expanded with injector characteristics in a wide range of parameter changes coupled with experience of machine operator leads to more precise diagnostics and can even indicate malfunction of other engine components or improper engine maintenance.

The effectiveness of fault detection in common rail injectors examination methods