Patent ID: 9500198
Filing Date: 2016-11-22
CPC Classification: F01D,F02C,F04D,F05D

Claim Text:
1. A method for operating a multiple spool turbocharger in an engine, comprising: counter-rotating first and second compressor spools and first and second turbine spools of the turbocharger; during a first condition, wherein the first condition is a low engine load and/or speed operating condition, supplying compressed air from the first compressor spool to the engine and bypassing the second compressor spool; during a second condition, wherein the second condition is a high engine load and/or speed operating condition, supplying compressed air from the second compressor spool to the engine and bypassing the first compressor spool; and during a third transient condition, wherein the third transient condition is a tip-in or tip-out, supplying compressed air from both the first and second compressor spools to the engine.