Series Turbocharging-A Requirement for High Specific Output, Vehicular Diesel Engines

In view of the problems associated with obtaining broad compressor range and efficiency at high pressure ratio and the ever-present requirements for durable, low cost and low inertia turbochargers, it is logical to examine the performance benefits to be derived from series turbocharging.

The merits and demerits of series turbocharging are reviewed. With respect to efficiency, range, transient response, and pressure ratio capability, it is practical to use currently available vehicular turbocharger technology to provide optimum solutions for near term, higher pressure ratio turbocharger capability.