Patent ID: 8459413
Filing Date: 2013-06-11
Classification: B64C,F01M,F16N

Abstract:
1. A lubrication system to lubricate moving components comprising: a housing defining a hot oil sump and a cold oil sump; a heat exchanger system; an external lubrication communication system to communicate a lubricating oil from said hot oil sump to said cold oil sump though said heat exchanger system; an internal lubrication communication system to communicate the lubricating oil from said cold oil sump to the moving components; a breather valve in communication with said housing, said breather valve in communication with said housing and atmospheric pressure; and a controller to selectively close said breather valve and seal said housing from atmospheric pressure in response to a loss of lubricant condition indicated by a pressure sensor such that said external lubrication communication system develops a negative pressure within said housing.