摘要:
In a system for optimizing the performance of a plurality of energy conversion devices (10), measurements of fluid flow into and out of the energy conversion devices, the efficiences of the conversion devices and the power produced by the conversion devices are used as inputs to function blocks in a logic arrangements. The function blocks cause a decrease in load demand to be applied to the energy conversion device having the lowest efficiency and an increase in load demand to be applied to the energy conversion device having the highest efficiency.
摘要:
A turbine engine accessory power unit has a compressor (18) provided with a bleed air control system in which a surge bleed valve (58) is proportionally and integrally controlled to maintain a constant minimum compressor bleed flow rate slightly above the compressor's surge flow rate. The system control parameter is automatically reset as a function of (inter- alia) the position of the compressor's adjustable inlet guide vanes to ensure optimum control system performance throughout the air delivery range of the compressor.
摘要:
The cessation of stall/surge in the compressor of a twin spool gas turbine engine is detected by comparing by digital electronics and engines sensed burner pressure with a burner pressure calculated from corrected low pressure compressor speed and sensed airplane Mach number which has been compensated to approximate engine dynamics. (Fig. 3)
摘要:
The monitoring arrangement is used with a spark ignition system (10,13) in which the spark discharge current oscillates at a known frequency, and includes a sonic sensor (30) accoustically coupled to the spark igniter (13), a detector circuit (33, 35, 37, 38) responsive only to signals from the sensor (30) which have a frequency substantially equal to that of the spark discharge current, and an indicating device (43) responsive to an output signal from the detector circuit (33, 35, 37, 38).