Borgwarner Inc.

James Mawer

Steve Birnie

Sean Rylance

Andrew Richardson

Sanjit Chaggar

Malcolm Carr

Kiumars Shoghi

A method of assembling and retaining a noise attenuation device () within an air inlet () of a compressor cover () includes inserting the noise attenuation device () into the air inlet () and applying a rolling compressive force to the air inlet () using a forming tool (). As a result, the air inlet terminal end () is deformed radially inward so as to form a radially-inwardly protruding lip (b) about the air inlet terminal end (). The radially-inwardly protruding lip () is configured to retain the noise attenuation device () within the air inlet (). The forming tool () used to form the radially-inwardly protruding lip () is also described.

Compressor cover assembly method and forming tool

A turbine () section of a turbocharger () includes a turbine wheel () disposed in a turbine housing (), the turbine housing () defining a gas inlet (), a volute configured to direct gas from the inlet () to the turbine () wheel, and a gas outlet. A rotary diverter valve () is disposed in the gas inlet () upstream of the volute, and provides three modes of controlling exhaust gas flow about the turbocharger ().

Rotatable diverter valve

A turbocharger () that uses exhaust gas flow to drive a turbine wheel () having a barrel or piston-type wastegate valve assembly () with a wastegate valve () that controls exhaust gas flow bypassing the turbine wheel () to control turbine work. A cylinder (), which may have a through hole (), is moveable in a tubular chamber () and functionally operates with a wastegate port () in the turbine housing () for controlling exhaust gas flow. An actuator () operably controls movement of the cylinder ().

Growing community of inventors

Harrogate, United Kingdom

James Mawer