Acceleration Capability of the Turbo-Charged Diesel

The different acceleration capability of naturally aspirated and turbocharged diesels used in utility vehicles influences vehicle operation.

By an examination of the factors determining engine acceleration capability, the author establishes that acceleration characteristics of naturally aspirated and turbocharged engines are primarily dependent on the value of the moment of inertia approaching the unity of the effective moment. Since the moment of inertia of a turbo-charged engine is smaller it accelerates better.