A modern six-cylinder automobile CI engine is adjusted to operate properly using diesel fuel with a cetane number of 52. The vehicle is accidently fuelled with a diesel fuel having a cetane number of...

A modern six-cylinder automobile CI engine is adjusted to operate properly using diesel fuel with a cetane number of 52. The vehicle is accidently fuelled with a diesel fuel having a cetane number of 42. Would more or less exhaust smoke be expected? Explain.