Patent ID: 8522691
Filing Date: 2013-09-03
Classification: F01P

Abstract:
1. A supplemental cooling system for an internal combustion engine fueled by a liquefied fuel gas comprising: an internal combustion engine configured to combust liquefied fuel gas and having a heat exchanger in thermal contact therewith; a storage tank configured to store liquefied fuel gas therein in liquid form; a supplemental heat exchanger; a radiator in thermal contact with ambient air; an accumulator configured to store liquefied fuel gas in gaseous form therein; a balance valve, having a controller, fluidly located between said radiator and said supplemental heat exchanger; a bypass loop fluidly connected to said balance valve; a coolant fluid; a sensor configured to measure ambient air temperature; wherein said internal combustion engine heat exchanger, said radiator and said supplemental heat exchanger are connected in a fluid loop for the flow of said coolant fluid and whereby said bypass loop fluidly bypasses said supplemental heat exchanger in connecting with said internal combustion engine heat exchanger; wherein said storage tank is fluidly connected to said accumulator through said supplemental heat exchanger; wherein during normal operation said coolant fluid is heated by said combustion engine and cooled by heat transfer with ambient air through said radiator; and wherein, in response to an abnormal, temporary increase in ambient air temperature, said controller directs said valve to direct increased coolant fluid flow from said radiator to said supplemental heat exchanger.