Gm Global Technolgoy Operations, Inc.

Electro-motive Diesel, Inc.

Michael Dean Tombers

James William Heilenbach

Joshua D Schueler

John R Zagone

Justin E Wagner

A two-stage filtration assembly for a diesel engine crankcase ventilation system which prevents splash oil from entering into the oil separator and limits oil mist contamination of crankcase air prior to passing into the exhaust port. A first stage filtration assembly includes a first stage filter featuring a wire mesh filtration media contained by a cylindrical tube with perforated (expanded) steel end caps for removing and draining large oil particles and any oil splashing adjacent to the crankcase. A second stage filtration assembly includes a second stage filter featuring a web filtration media, preferably fiberglass, for removing small, air borne oil particles with a high efficiency during the second phase of filtration. The second stage a filter is mounted on an acute angle to allow drainage via gravity to the first stage filter. A passageway in the first stage filtration assembly allows oil to drain from the second stage filter back to the crankcase. The drains prevent oil re-entrainment into the air stream, allowing maximum effectiveness of the filtration elements.

Two-stage filtration assembly for a diesel engine crankcase ventilation system

A turbocharger rotor includes a turbine wheel, a compressor wheel, a shaft extending between the turbine and compressor wheels for rotation together about an axis, and connecting means including two pairs of non-locking cones. In a preferred embodiment, the cones include external cones on the turbine and compressor wheels and internal cones on the ends of the shaft. The non-locking cones are centered on the axis with the external and internal cones drivingly engaging one another to align and connect the wheels with the shaft. A long bolt fastener extends through the compressor wheel and the shaft to engage the turbine wheel and hold the rotor components in assembly. An alternative embodiment includes engaging radial surfaces outward of the cones. The radial surfaces share the transmission of torque through the connecting means and assist in stabilizing the joints between the shaft and the connected wheels. Additional features are disclosed.

Conically jointed turbocharger rotor

A method is provided for improving the load distribution on a ramp-surface of a clutch mechanism, such as the camplate of an overrunning clutch for the turbocharger of a locomotive diesel engine. In addition, an improved camplate produced by such a method is also provided in accordance with this invention. The method involves an electroplating process in which the electrostatic field is uniquely shaped so as to concentrate the electrostatic flux at a central region of the ramp surface, such that a greater amount of plating metal is deposited in the central region of the ramp surface as compared to the edges of the ramp surface. As a result, the ramp surface has a crowned contour as defined by the plating alone, and does not require a pre- or post-plating crown grind operation. The crowned contour serves to advantageously distribute a load over the ramp surface, so as to promote a longer service life for the camplate.

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Lockport, IL, United States of America

Michael Dean Tombers