| 摘要 |
A power train having a gas turbine engine with controlled power transfer between the load turbine drive train and the compressor turbine drive train and a power shift transmission is shown. The engine control system includes a fuel control responsive to input and output speeds and compressor discharge pressure and an output power characteristic, horse power and torque, program control responsive to compressor and auxiliary torque and speed controlling the power transfer clutch between the compressor and engine to maintain proper turbine inlet temperature at a proper constant high value in a wide range of operation for optimum efficiency. Overcontrols responsive to acceleration and the temperature of the power transfer clutch and ambient air are provided. The power shift transmission control pressure is controlled by compressor discharge pressure and engine output or transmission input speed to provide a shift actuating pressure proportional to the torque produced by the engine. The shift actuating pressure acts on ratio establishing devices to provide engagement with a speed and force having the same proportion to pressure and thus to torque for uniformly smooth shifting. The engine, during overrun, provides increased engine braking. The engine control provides an overrun signal for engine transfer clutch control and transmission pressure control for smooth shifting. The overrun signal cuts off the governor pressure reduction signal to increase transmission pressure or increase the bias force on the transmission regulator valve to increase transmission pressure on overrun.
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