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

Hydraulic assist turbocharger system

Patent ·
OSTI ID:5031655
This patent describes a turbocharger system for supplying charge air to a combustion engine. It comprises a pair of turbochargers each having a first turbine and compressor mounted on a common shaft for concurrent rotation, the first turbine being adapted to be rotatably driven by exhaust gases from the combustion engine to rotatably drive the compressor to produce charge air for supply to the engine, the turbocharger further including a second turbine mounted on the shaft, the second turbine comprising an hydraulic turbine for rotatably driving the common shaft to rotatably drive the compressor; pump means for producing a supply of hydraulic fluid under pressure; conduit means for delivering the hydraulic fluid under pressure to the second turbine to rotatably drive the second turbine; electrohydraulic control valve means for regulating passage of the hydraulic fluid through the conduit means to selectively control rotatable driving of the shaft by the second turbine in accordance with engine operating parameters; and a common support frame having the pair of turbochargers and the control valve means and the pump means mounted thereon to define a substantially unitary package adapted for facilitated mounting onto the engine.
Assignee:
Allied-Signal, Inc., Morris County, NJ (United States)
Patent Number(s):
A; US 5113658
Application Number:
PPN: US 7-525967
OSTI ID:
5031655
Country of Publication:
United States
Language:
English