Patent 7287368 was granted and assigned to Rolls-Royce on October, 2007 by the United States Patent and Trademark Office.
In a fluid system for a gas turbine engine, oil is supplied from an oil tank (10) by a constant displacement pump (12) to lubricate engine components (18). The oil is supplied to the components (18) via a heat exchanger (16) in which oil and fuel are placed in direct heat exchange relationship.