US 9,810,217 B2
Vehicle and a method of reducing sound produced by a liquid fluid pump
Bryan K. Pryor, Waterford, MI (US); Bruce A. Tucker, Brighton, MI (US); Karl R. Gilgenbach, Rochester Hills, MI (US); and Richard B. Jess, Haslett, MI (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Nov. 22, 2013, as Appl. No. 14/87,439.
Prior Publication US 2015/0147192 A1, May 28, 2015
Int. Cl. F02M 37/04 (2006.01); F02M 69/02 (2006.01); F02M 21/02 (2006.01); F04B 53/00 (2006.01); F04C 14/22 (2006.01)
CPC F04C 14/226 (2013.01) [F02M 21/0254 (2013.01); F02M 37/04 (2013.01); F02M 69/02 (2013.01); F04B 53/001 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of reducing sound produced by a liquid fluid pump, the method comprising:
detecting, via a controller, a predetermined event;
activating, via the controller, the pump when the predetermined event is detected, wherein the pump contains a gaseous fluid when in a first phase of the pump and a liquid fluid when in a second phase of the pump;
operating a control valve of the pump in one of an initial operating mode and a standard operating mode when the pump is activated, with the control valve operable to allow the gaseous fluid to vent out of the pump when in the initial operating mode corresponding to the pump being in the first phase, and with the control valve operable to allow the liquid fluid to move through the pump when in the standard operating mode corresponding to the pump being in the second phase; and
energizing and de-energizing, at a calibrated frequency, via the controller, a solenoid of the control valve in a sequence which cycles the solenoid on and off when in the initial operating mode to reduce the sound produced by the pump during the initial operating mode;
moving a rod of the control valve back and forth in response to the solenoid being energized and de-energized, at the calibrated frequency, in the sequence when in the initial operating mode;
moving a blocking member of the control valve back and forth in response to the movement of the rod when in the initial operating mode such that the blocking member controls a rate that the gaseous fluid is vented from the pump as the solenoid is cycled on and off while in the initial operating mode; and
operating the control valve in the standard operating mode when the gaseous fluid has been vented from the pump in the initial operating mode.