Turbocharger with two-stage compressor, including a twin-wheel parallel-flow first stage

US8181462B2 · kind B2 · utility

Assignee

• HONEYWELL INTERNATIONAL INC. · US

Inventors

• Steven Don Arnold · Rancho Palos Verdes, US
• Will Smith · London, GB
• Mike Guidry · Morristown, US
• Jeff Letterman · Torrance, US
• James Reyenga · Long Beach, US
• Vai Man Lei · Torrance, US
• Asit Singhal · Lake Forest, US
• Kelvin Buneirisert · Torrance, US

Key dates

• Filing date: Jun 23, 2009
• Grant date: May 22, 2012
• Expiry date: Apr 4, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A single-shaft exhaust gas-driven turbocharger includes two parallel-flow first-stage centrifugal compressors in series with a single second-stage centrifugal compressor, and a one-stage turbine arranged to drive both the first- and second-stage centrifugal compressors via a single shaft on which the compressors and turbine are fixedly mounted. The compressor housing defines from one to a plurality of circumferentially spaced inlet ducts for the second wheel of the first stage, and from one to a plurality of circumferentially spaced interstage ducts leading from a vaneless diffuser of the first stage into the inlet of the second stage.