公开(公告)号：WO1996027081A1

公开(公告)日：1996-09-06

申请号：PCT/US1996002827

申请日：1996-03-01

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  GOLDBERG, Gary, L. ,  HILGEMAN, Paul, E. ,  RECTOR, James, V. ,  McARTHUR, Malcolm, J. ,  JEORLING, David, E. ,  DUTART, Charles, H. ,  DESAI, Mahendra, P.

IPC: F02C07/32

CPC classification number: F02C7/32 ,  F05D2220/50 ,  F05D2260/20 ,  F05D2260/406 ,  Y02T50/675

Abstract: In a power transmission or generation apparatus having a source of heated pressurized air, the problem of achieving rapid controlled engagement of a hydraulically actuated clutch at low ambient temperatures is solved by utilizing a portion of that heated pressurized air for heating only that small control volume of hydraulic fluid within a clutch control circuit needed to achieve rapid actuation and stable control of the hydraulic clutch. Our invention is thus particularly applicable in a power transmission or generation apparatus having a gas turbine engine, or a turbocharged piston engine as the prime mover. With gas turbine engine powered units, our invention contemplates the use of compressor discharge air, rather than exhaust products for heating the hydraulic fluid. Similarly, for piston engines our invention contemplates the use of turbocharger discharge air rather than exhaust products. In one embodiment a clutch and a control circuit are provided in which the fluid volume of the control circuit is minimized, and fluid removal features are provided to effectively drain all residual fluid from a portion of the control circuit following disengagement of the clutch. On subsequent start-up from cold ambient temperatures, the drained portion of the control circuit is filled with preheated fluid prior to engagement of the clutch thus eliminating problems of slow response and controllability encountered due to cold viscous fluid in prior clutch control circuits.

Abstract translation: 在具有加热加压空气源的动力传动装置或发电装置中，在低环境温度下实现液压致动离合器的快速控制接合的问题通过利用一部分加热的加压空气来加热只有小的控制体积的 离合器控制电路内的液压流体需要实现快速致动和液压离合器的稳定控制。 因此，本发明特别适用于具有燃气涡轮发动机或作为原动机的涡轮增压活塞式发动机的动力传递或发电装置。 利用燃气涡轮发动机动力装置，本发明考虑使用压缩机排放空气，而不是用于加热液压流体的排气产品。 类似地，对于活塞式发动机，本发明考虑使用涡轮增压器排放空气而不是排气产品。 在一个实施例中，提供了离合器和控制电路，其中控制电路的流体体积最小化，并且提供流体去除特征以在分离离合器之后有效地排出来自控制电路的一部分的所有残余流体。 在从环境温度的后续启动中，控制回路的排出部分在离合器接合之前被填充有预热流体，从而消除了由于现有离合器控制回路中的冷粘性流体而导致的缓慢响应和可控性的问题。

公开(公告)号：EP0839269A1

公开(公告)日：1998-05-06

申请号：EP96909553.0

申请日：1996-03-01

Applicant: SUNDSTRAND CORPORATION, INC.

Inventor： GOLDBERG, Gary, L. ,  HILGEMAN, Paul, E. ,  RECTOR, James, V. ,  McARTHUR, Malcolm, J. ,  JEORLING, David, E. ,  DUTART, Charles, H. ,  DESAI, Mahendra, P.

IPC: F02C7 ,  F16D25 ,  F16D48

CPC classification number: F02C7/32 ,  F05D2220/50 ,  F05D2260/20 ,  F05D2260/406 ,  Y02T50/675

Abstract: In a power transmission or generation apparatus having a source of heated pressurized air, the problem of achieving rapid controlled engagement of a hydraulically actuated clutch at low ambient temperatures is solved by utilizing a portion of that heated pressurized air for heating only that small control volume of hydraulic fluid within a clutch control circuit needed to achieve rapid actuation and stable control of the hydraulic clutch. Our invention is thus particularly applicable in a power transmission or generation apparatus having a gas turbine engine, or a turbocharged piston engine as the prime mover. With gas turbine engine powered units, our invention contemplates the use of compressor discharge air, rather than exhaust products for heating the hydraulic fluid. Similarly, for piston engines our invention contemplates the use of turbocharger discharge air rather than exhaust products. In one embodiment a clutch and a control circuit are provided in which the fluid volume of the control circuit is minimized, and fluid removal features are provided to effectively drain all residual fluid from a portion of the control circuit following disengagement of the clutch. On subsequent start-up from cold ambient temperatures, the drained portion of the control circuit is filled with preheated fluid prior to engagement of the clutch thus eliminating problems of slow response and controllability encountered due to cold viscous fluid in prior clutch control circuits.