公开(公告)号：US3592298A

公开(公告)日：1971-07-13

申请号：US3592298D

申请日：1969-07-02

Applicant: GEN MOTORS CORP

Inventor： LEFFERT CHARLES B ,  HAFSTAD LAWRENCE R

IPC: F16D65/78 ,  F16D65/84

CPC classification number: F16D65/84 ,  F16D2065/781 ,  F16D2065/789

Abstract: A brake-cooling system in which the rotating brake friction surfaces are in heat transfer contact with the evaporator section of a heat pipe arrangement. The heat transferred during low levels of braking is transmitted to ambient air or other heat exchange means by conduction and convection. When sufficiently severe braking loads occur so that the conduction mode of heat transfer will not carry away the heat at a sufficient rate, the heat pipe liquid is vaporized and builds up vapor pressure to bring the heat pipe into efficient operation. As the cooling system quickly shifts into this mode of operation the entire heat pipe assembly in effect suddenly increases its thermal conductivity by several orders of magnitude and the heat is rapidly carried away to the heat pipe condenser section, where it is then removed by a suitable heat exchanger arrangement.