Garrett Transportation I Inc.

Honeywell International Inc.

Philippe Arnold

Dominique Petitjean

Lorrain Sausse

Emmanuel Severin

Peter Rhys Davies

Gary Agnew

Denis Jeckel

Anthony Ruquart

Dominque Petitjean

Nathaniel Bontemps

Manual Dufin

Michael Ladonnet

Guillaurne Dupont

David Francois

Dominique Petit Jean

Guillaume Dupont

Raphael Hettinger

An assembly can include a first radial compressor wheel that has a rotational axis and that includes a hub surface; a second radial compressor wheel that comprises a hub surface; and an annular baffle disposed at least in part between the hub surfaces wherein the annular baffle an outer edge and a substantially parabolic portion that extends to a tip portion, where the tip portion includes opposing sides that converge radially inwardly to a blunt end.

Multistage radial compressor baffle

A turbocharger for an internal combustion engine or fuel cell includes a compressor having a liquid-cooled backplate through which a liquid coolant is circulated. The backplate reduces compressor outlet temperature, thereby reducing the cooling load on the intercooler for the engine, and enabling a reduction in charge air temperature entering the engine air inlet manifold. The compressor can include a serial two-stage compressor, in which case the backplate serves as a divider between the two impellers. In another variation, a turboexpander is combined on the same shaft with a single-stage compressor having the liquid-cooled backplate. Pressurized air from the compressor drives the turbine wheel of the turboexpander, expanding and reducing the temperature of the air before being fed to the engine.

Turbocharger having compressor with liquid-cooled backplate

Growing community of inventors

Thaon-les-Vosges, France

Philippe Arnold