Alliedsignal Inc.

Jerome W Thompson

Jean-Luc P Fleury

Voytek Kanigowski

A boosted charge air system which eliminates adverse effects of pressure loading on the system components incorporates a pressure compensator mounted intermediate a turbocharger compressor section outlet duct and the inlet duct of a charge air cooler. The compensator includes first and second end bellows each with a first cross sectional area, a middle bellows intermediate the first and second end bellows with an annular cross sectional area substantially equal to the first cross sectional area, first and second end flanges connecting the first and second end bellows to the outlet duct and inlet duct, respectively, and first and second annular plates connecting the middle bellows to the first and second end bellows. An internal restraining structure for the compensator includes two sets of struts interconnecting the first end flange to the second annular plate and the second end flange to the first annular plate. For applications where exhaust pressure variations induce undesirable loading on the charge air system components a compensator, as described, is incorporated intermediate the exhaust manifold outlet duct and the turbine section inlet duct for the turbocharger.

Turbocharger pressure compensation system

An improved compressor wheel assembly for a turbocharger or the like includes a centrifugal compressor wheel having a boreless hub to substantially improve wheel fatigue life. The compressor wheel is formed as by casting to include an integral and internally threaded mounting sleeve extending coaxially from the boreless hub. In the assembly, the mounting sleeve extends through an opening in a compressor backplate for threaded connection to a turbocharger shaft, with a thrust collar spacer being interposed between axially facing shoulders defined respectively on the mounting sleeve and shaft to ensure accurate axial positioning of the components. An annular seal flange on the thrust collar spacer extends axially into the backplate opening in generally concentric spaced relation about the mounting sleeve. This seal flange is adapted to carry one or more seal rings for engaging the backplate, thereby sealing the passage of the mounting sleeve and shaft through the backplate opening.

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Cypress, CA, United States of America

Jerome W Thompson