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U.S. Department of Energy
Office of Scientific and Technical Information

Positive displacement compounding of a heavy duty diesel engine

Technical Report ·
OSTI ID:5841153

A helical screw type positive displacement (PD) compressor and expander was considered in this study as an alternative to the turbocharger and the power turbine in the Cummins Advanced Turbocompound engine. The Institute of Gas Technology (IGT) completed the design, layout, and performance prediction of the PD machines under a subcontract from Cummins. The results of the study indicate that a screw compressor-expander system is feasible up to at least 750 HP, dry operation of the rotors is feasible, cost and producibility are uncertain, and the system will yield about 4% improvement in brake specific fuel consumption (BSFC) over the Advanced Turbocompound engine.

Research Organization:
Cummins Engine Co., Inc., Columbus, IN (USA)
DOE Contract Number:
AC02-78CS54936
OSTI ID:
5841153
Report Number(s):
DOE/NASA-4936-3; NAS-CR-168286; CTR-0748-84003; ON: DE85009879
Country of Publication:
United States
Language:
English