Gm Global Technolgoy Operations, Inc.

Delphi Technologies, Inc.

Bruce Alan Tucker

John Meade Beardmore

Richard B Jess

Bryan K Pryor

Thomas C Rytlewski

Karl R Gilgenbach

Roy William Heath

David R Aden

David Fredrick Hammerbacher

Jason J Wiedyk

Shane E Bremer

Ihab M Hanna

Aleksandar J Filipovic

Jerrod M Etienne

David N Leland

A vehicle and a method of reducing sound produced by a liquid fluid pump are disclosed. A pump is activated when a predetermined event is detected. A control valve of the pump is operated in one of an initial and a standard mode when the pump is activated. The control valve is operable to allow a gaseous fluid to vent out of the pump when in the initial mode corresponding to the pump being in a first phase. The control valve is operable to allow a liquid fluid to move through the pump when in the standard mode corresponding to the pump being in a second phase. A solenoid of the control valve is energized and de-energized, at a calibrated frequency, in a sequence when in the initial mode to reduce the sound in the pump during the initial mode.

Vehicle and a method of reducing sound produced by a liquid fluid pump

A chatter boundary system includes a measuring module, a comparison module, and a boundary module. The measuring module measures and collects samples of undulations in a manufactured part. The comparison module classifies a sound signal generated by the undulations as either noisy or quiet. The boundary module determines a continuous boundary between the noisy and quiet undulations based on the samples and the sound signal.

Continuous chatter boundary criteria for manufactured parts

A sliding vane pump comprising a rotor housing having a pumping chamber, a rotor in the pumping chamber having a plurality of radially disposed slots, and a plurality of sliding vanes disposed in the slots configured to extend to follow an inner wall of said pumping chamber.

Sliding vane pump

An oil pump drive assembly for an internal combustion engine includes a source of rotational input such as a crankshaft and a splined hub mounted to the crankshaft for rotation therewith. The splined hub has male splines extending about the outer perimeter to transfer rotational load to drive an oil pump. The oil pump includes a pump body housing a gerotor pump set, which includes an internally lobed pumping annulus and a pump rotor. The pump rotor has lobes along the outer surface to engage the internally lobed pumping annulus and female splines along the inner surface which compliment and receive the male splines of the splined hub for meshing engagement to operatively connect the crankshaft and the gerotor pump set. The oil pump further includes a splined isolator ring disposed between the pump rotor and the splined hub wherein the inner periphery of the isolator ring is configured for meshing engagement with the male splines of the splined hub and the outer periphery of the isolator ring is configured for meshing engagement with the female splines of the pump rotor. The splined isolator ring operates to minimize noise generation upon impacts between the splined hub of the crankshaft and the pump rotor.

Isolated engine oil pump drive

According to the present invention a connecting rod constructed of a rigid, primary material is defined by a longitudinally extending beam having, at a first end, a piston pin bearing boss and, at a second end, a crankpin bearing boss. The longitudinally extending beam includes an opening extending from a location near the piston pin bearing boss to a location near the crankpin bearing boss to define opposing webs or legs. A secondary material having stiffness properties different from said primary material is disposed within the opening in the longitudinally extending beam. Under loads imposed on the connecting rod during the combustion event, the opposing legs exhibit a resiliency which allows inward movement, towards the beam axis thereby compressing the secondary material in the opening. The inward movement of the opposing legs, and resulting compression of the secondary material therebetween, absorbs a portion of the applied load to reduce or modify the amplitude of the force transferred to the crankpin. As the force of the combustion event diminishes through downward movement of the piston in the engine cylinder, the opposing legs move outwardly, away from the beam axis, returning to their original relationship and relieving the compressive forces imposed on the secondary material in the opening. As the webs return to the starting position, a substantial portion of the previously absorbed load, applied to the connecting rod by the combustion event, is transferred to the crankpin such that the total transmitted force is substantially the same as that of a typical connecting rod while the peak force amplitude is reduced.

Connecting rod for internal combustion engine

According to the present invention a connecting rod is defined by a longitudinally extending beam having, at a first end, a piston pin bearing boss and, at a second end, a crankpin bearing boss. The longitudinally extending beam includes an opening extending from a location near the piston pin bearing boss to a location near the crankpin bearing boss to define opposing webs or legs. Under loads imposed on the connecting rod during the combustion event, the opposing legs exhibit a resiliency which allows inward movement, towards the beam axis. The inward movement of the opposing legs absorbs a portion of the applied load, thereby reducing the amplitude of the force transferred to the crankpin. As the force of the combustion event diminishes through downward movement of the piston in the engine cylinder, the opposing legs move outwardly, away from the beam axis, returning to their original relationship. As the webs return to the starting position, the previously absorbed portion of the load applied to the connecting rod, by the combustion event, is transferred to the crankpin such that the total transmitted force is substantially the same as that of a typical connecting rod while the peak force amplitude is reduced.

Growing community of inventors

Brighton, MI, United States of America

Bruce Alan Tucker