Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.