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    • 2. 发明公开
    • OIL COOLING SYSTEM
    • 油冷却系统
    • EP3293368A1
    • 2018-03-14
    • EP17185506.7
    • 2017-08-09
    • Rolls-Royce plc
    • Keeler, Benjamin
    • F01D25/10F02C7/14F02C7/18
    • F02C7/16F01D25/10F02C7/14F02C7/18F02C7/22F05D2220/32F05D2220/76F05D2260/213F05D2260/606F05D2270/112F05D2270/303
    • An oil cooling system for an engine (10). The system comprises an oil input line (30) configured to receive heated oil from a component (24, 26),
      an oil cooler (32) configured to cool oil and direct oil to an oil return line (36) and a first bypass line (34) configured to selectively bypass oil from the input line (30) to the return line (36) without passing through the oil cooler (32). The first bypass line (34) comprises a first oil pressure actuated valve (38) urged toward a closed position, and configured to move toward an open position where a pressure differential across the valve exceeds a first predetermined pressure. The first bypass line (34) further comprises a second oil pressure actuated valve (40) urged toward an open position, and configured to move toward a closed position where a pressure differential across the valve exceeds a second predetermined pressure. The second predetermined pressure is greater than the first predetermined pressure, and the first and second valves (38, 40) are provided in series.
    • 一种发动机油冷却系统(10)。 该系统包括构造成接收来自部件(24,26)的热油的油输入管线(30),构造成冷却油并将油引导至回油管线(36)的油冷却器(32),以及第一旁路管线 (34),其构造成选择性地将油从所述输入管线(30)旁路到所述返回管线(36)而不经过所述油冷却器(32)。 第一旁通管路(34)包括朝向关闭位置推动的第一油压致动阀(38),并且构造成朝向横跨阀的压差超过第一预定压力的打开位置移动。 第一旁通管线(34)还包括第二油压致动阀(40),该第二油压致动阀(40)朝向打开位置推动,并且构造成朝向跨越阀的压差超过第二预定压力的关闭位置移动。 第二预定压力大于第一预定压力,并且第一和第二阀(38,40)串联设置。