The Garrett Corporation

Gm Global Technolgoy Operations, Inc.

Hans Egli

Joe L Byrne

James H Nancarrow

Albert H Bell, Iii

A rotor shaft assembly for use in turbochargers includes a metal shaft having a generally cylindrical female cavity therein concentrically distributed about the axis thereof; and a solid hubbed ceramic turbine wheel having a male stub shaft insertable into the female cavity. The axis of the male stub shafted ceramic turbine is coextensive with the axis of the shaft and the stub shaft is mated with the female receptacle and joined by an adhesive. A turbocharger includes a rotor-shaft assembly of the above-described type, in which the metal to ceramic adhesive joint is located in the turbocharger center housing.

Turbocharger and rotor shaft assembly

An energy transfer machine including a stator ring carried in a casing forming a toroidal fluid path between a fluid inlet and a fluid outlet. A rotor has a blade cascade coacting with fluid in the path to transfer energy therebetween. Apparatus and methods are disclosed for controllably unloading the energy exchange between the rotor and the fluid.

Energy transfer machine

A device to produce vehicle braking from a two-shaft gas turbine engine including an air brake with a centrifugal impeller on the power turbine shaft, the impeller having blades forwardly turned at the impeller exit through an angle greater than sixty degrees for absorbing energy from the power turbine shaft thereby to control power transfer to an output shaft. The system includes a variable inlet control assembly to throttle inlet air flow to the air brake impeller so as to regulate the amount of power absorption from the power turbine shaft.

Turbine engine with air brake

A multiple turbosupercharger system for an internal combustion engine routes the air from ambient, or combustible gas mixture from downstream of the carburetor, serially through a low-pressure compressor, a high-pressure compressor, the engine's intake and exhaust manifolds, and thence through the high-pressure and low-pressure turbines, thereafter exhausting to ambient. The high-pressure turbine, being of the meridionally divided wall type, is coupled to the engine's exhaust manifold so as to efficiently utilize the blow-down pulse energy of the exhaust gas. The low-pressure turbine has a movable vane in its gas distributor for establishing exhaust gas flow rate control without substantial loss of total energy of the fluid. The vane is positioned by an actuator under the control of sensing means which senses a suitable system or engine parameters.

Growing community of inventors

Santa Monica, CA, United States of America

Hans Egli