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公开(公告)号：EP0132977A3
公开(公告)日：1986-03-19
申请号：EP84304693
申请日：1984-07-10
CPC分类号： F02C9/28 , F02C9/32 , F05D2200/11
摘要： A fuel control system has a main metering valve (24), a stepping motor (40) and a torque motor (33), the motors (40, 33) being responsive to control signals from a computer. The motors (33, 40) are coupled through a spring (46) to provide a force sum which positions the control element (32) of a servo valve (30) for positioning the metering valve (24). The arrangement is such that in the event of electrical failure the motors (33, 40) are de-energised and the stepping motor (40) is arrested in a position which corresponds to a steady-running fuel flow at the time of failure.
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公开(公告)号：EP0273848A3
公开(公告)日：1988-07-20
申请号：EP87630241
申请日：1987-11-19
发明人： Krukoski, Leon , Laprad, Richard F.
IPC分类号： F02C09/28
CPC分类号： F02C9/28
摘要： A gas turbine engine control system operates based upon a synthesized value of a parameter upon loss of the actual measured value of the parameter. To provide smooth engine operation upon switchover to the synthesized parameter a fixed trim is applied to the synthesized parameter which, upon switchover, makes the synthesized parameter equal to the last known measured value of the parameter. Thus, the engine will see no sudden change in operation at the instant of switchover. Thereafter the trimmed synthesized parameter changes in value by the same amount as does the untrimmed synthesized parameter.
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公开(公告)号：EP0187115A3
公开(公告)日：1988-08-17
申请号：EP85630228
申请日：1985-12-18
摘要： @ A control system for a twin spool gas turbine engine for synthesizing a control parameter for the engine (such as the ratio of high compressor inlet temperature to low compressor inlet temperature) includes a function generator responsive to an engine operating parameter (such as corrected rotor speed) to generate a simulated value of the control parameter for a base engine configuration. A second function generator, responsive to an engine operating parameter, generates a simulated value of the difference between the value of the control parameter for the base engine configuration and the value of the parameter for another configuration. This difference is operated upon to correct it to the actual engine configuration. The corrected difference is added to the simulated value of the control parameter for the base configuration to give a simulated value of the control parameter for the actual engine configuration.
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4.发明公开Method and means for enhancing recovery of a surge condition in a gas turbine engine 失效提高燃气轮机发动机转速条件恢复的方法与手段
公开(公告)号：EP0268545A3
公开(公告)日：1988-08-10
申请号：EP87630248
申请日：1987-11-19
CPC分类号： F02C9/48 , F02C9/28 , F05D2270/101
摘要： A system (38) and method for directing control actions to recover from the occurrence of a surge condition within a turbocompressor includes a high/low engine power output discriminator (40). Control action is taken by the system (38) in response to both the detection of a surge condition and the current engine power output level. The system (38) selects among a plurality of corrective control actions (56, 62, 68) to best achieve a return to normal engine operation.
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公开(公告)号：EP0181099A3
公开(公告)日：1987-06-03
申请号：EP85307388
申请日：1985-10-15
IPC分类号： F02C09/28
CPC分类号： F02C9/28
摘要： A fuel metering device (21) includes inlet and outlet ports (37, 38) and a control member (22) movable by a servo pressure to control flow through the inlet port (37). The inlet port (37) is provided in a sleeve (36) which is adjustable axially in accordance with the known density of fuel to be used. The metering device (21) forms part of a fuel control which includes a shut-off valve (63) which is responsive to a servo pressure controlled by a pilot valve (86) operated by a torque motor (88). The motor (88) is arranged to latch in the position to which it was last energised, so that the shut-off valve (63) remains in the position to which it was last operated, after de-energisation of the torque motor (88).
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公开(公告)号：EP0180248A3
公开(公告)日：1987-06-03
申请号：EP85113983
申请日：1983-10-07
IPC分类号： F02C09/28
CPC分类号： F02C9/263 , F02C9/28 , Y02T50/671 , Y10T137/7737 , Y10T137/777
摘要： A valve arrangement, particularly for a gas turbine engine fuel system, has a main valve control element (51) for regulating flow between an inlet (16) and an outlet (24), the control element (51) being responsive to a servo pressure in a chamber (53). The servo pressure is regulated by a valve (57) defined by a part of control element (51) and by a stem (56) of a piston (55) which is responsive to the pressure in the inlet (16) and to the pressure downstream of a variable metering device (30). The valve arrangement (50) spills fuel from upstream of the metering device (30) in such a way as to maintain the pressure difference across the metering device substantially constant.
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公开(公告)号：EP0273849A3
公开(公告)日：1988-07-20
申请号：EP87630243
申请日：1987-11-19
发明人： Krukoski, Leon
IPC分类号： F02C09/28
CPC分类号： F02C9/28 , F05D2270/112 , F05D2270/303
摘要： In a gas turbine engine electronic control system the engine total inlet temperature is synthesized from aircraft Mach number and the nozzle expansion ratio. When the engine is in a transient mode of operation the synthesized value of the total inlet temperature is maintained constant at the value calculated just before entering the transient mode. The synthesized temperature is used when the actual measured temperature is unavailable or unreliable.
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公开(公告)号：EP0067628A3
公开(公告)日：1984-02-15
申请号：EP82302864
申请日：1982-06-03
申请人： CHANDLER EVANS INC.
发明人： Meyer, Gene A. , Peck, Robert E.
CPC分类号： F02C9/28
摘要： A fuel metering system for a gas turbine engine with a low pressure drop fuel vaporizing system includes an engine driven centrifugal pump (10) supplied with fuel at a given absolute pressure (Pi) from a tank. The pump discharges fuel to a rapidly pulsed, solenoid operated ball valve (20) which functions as a metering valve in controlling flow to the engine. The solenoid of the metering valve receives periodic voltage pulses of appropriate width from an electronic control (24) which senses selected engine parameters and computes the required fuel flow and the pressure differential (Pr-Pp) across the metering valve. Since the pressure differential across the metering valve (20) increases with engine speed, favorable flow turndown ratios may be achieved without operating the metering valve at high or low values of duty cycle.
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公开(公告)号：EP0092501A3
公开(公告)日：1984-01-04
申请号：EP83630062
申请日：1983-04-15
CPC分类号： F02C9/28 , F05D2220/329 , F05D2270/07 , G05D1/0005 , G05D1/0858 , Y02T50/671
摘要： A digital fuel control (53) for a helicopter engine (20) controls fuel flow (52) to the engine in response to a turbine reference speed (62) determined in a normal mode (Fig. 5) to be a rated speed, in a fade-in mode (Fig. 6) to be incremented (117, 120) to an estimated optimum minimum speed (114, 115, 125), in an optimizer mode (Fig. 7) to be incremented (138) in a direction (137) leading to least fuel consumption (135), and in a fade-out mode (Fig. 8) to be incremented (151, 153) back to rated speed (154). The invention provides an engine reference speed which results in minimum fuel consumption during cruise flight.
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公开(公告)号：EP0050403A3
公开(公告)日：1982-10-27
申请号：EP81303590
申请日：1981-08-05
发明人： Fujikawa, Yasuo
CPC分类号： F02C9/26
摘要： A fuel-supply control system for a gas-turbine engine includes a fuel injector (47) opening into an engine combustion chamber (48), and a reservoir (23) connected to the fuel injector (47). Three fuel lines (20, 21, 22) are each connected at one end to the reservoir (23) for supplying fuel to the combustion chamber (48) via the reservoir (23) and the fuel injector (47). Electrically operable on-off metering valves (24, 25, 26) equal in number to the lines are connected in corresponding lines in such a manner that the lengths of the lines (20, 21, 22) from the corresponding metering valves (24, 25, 26) to the reservoir (23) are different from each other. A sensor (54) detects a certain engine operating condition. A controller (50) is connected to the sensor (54) for producing a pulse train whose duty cycle depends on the engine operating condition. The pulse train is fed to the metering valves (24, 25, 26) to open them periodically.
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