公开(公告)号：US06422023B1

公开(公告)日：2002-07-23

申请号：US09908427

申请日：2001-07-18

申请人： John E. Dudd, Jr. ,  Dennis G. Demers

发明人： John E. Dudd, Jr. ,  Dennis G. Demers

IPC分类号： F02C928

CPC分类号： F02C9/28 ,  F02C7/26 ,  F02C9/36 ,  F05D2270/112 ,  F05D2270/114 ,  F05D2270/3032

摘要： A turbine engine (49) fuel delivery system of the type including a pneumatic governor has an electronic governor and an engine excess stress avoidance feature which disable the pneumatic governor (70) so long as the engine speed exceeds a prescribed value and an electronic control unit (45) continues to function properly. The system transfers governing responsibility to the electronic control unit (45) which controls a torque motor and solenoid valve fuel diversion line (22). The system monitors an engine (49) operating parameter such as gas generator speed (37), power turbine speed, engine output torque, or engine temperature and further diminishes fuel flow to the engine (49) when the monitored parameter exceeds a threshold value. The system resumes normal speed governoring flow when that parameter returns to an acceptable level. The system also senses rotor blade pitch to reduce rotor droop and increases fuel flow to the engine (49) when the pitch (44) increases, and decreasing the fuel flow to the engine (49) when the rotor blade pitch (44) decreases.

摘要翻译： 一种包括气动调速器的涡轮发动机（49）燃料输送系统具有电子调速器和发动机超压应力避免特征，只要发动机转速超过规定值即禁用气动调速器（70），电子控制单元 （45）继续正常工作。 该系统将控制责任转移到控制扭矩电动机和电磁阀燃料转向管线（22）的电子控制单元（45）。 当所监视的参数超过阈值时，系统监视发动机（49）的运行参数，例如气体发生器速度（37），动力涡轮机转速，发动机输出扭矩或发动机温度，并进一步减少到发动机（49）的燃料流量。 当该参数返回到可接受的水平时，系统恢复正常速度调节流。 当转子叶片间距（44）减小时，当桨距（44）增加时，该系统还感测转子叶片桨距以减少转子下垂并增加到发动机（49）的燃料流量，并且减小到发动机（49）的燃料流量。

公开(公告)号：US06282882B1

公开(公告)日：2001-09-04

申请号：US09418053

申请日：1999-10-14

申请人： John E. Dudd, Jr. ,  Dennis G. Demers

发明人： John E. Dudd, Jr. ,  Dennis G. Demers

IPC分类号： F02C928

CPC分类号： F02C7/26 ,  F02C9/28 ,  F02C9/36 ,  F05D2270/112 ,  F05D2270/114 ,  F05D2270/3032

摘要： A turbine engine (49) fuel delivery system of the type including a pneumatic governor has an electronic governor and an engine excess stress avoidance feature which disable the pneumatic governor (70) so long as the engine speed exceeds a prescribed value and an electronic control unit (45) continues to function properly. The system transfers governing responsibility to the electronic control unit (45) which controls a torque motor and solenoid valve fuel diversion line (22). The system monitors an engine (49) operating parameter such as gas generator speed (37), power turbine speed, engine output torque, or engine temperature and further diminishes fuel flow to the engine (49) when the monitored parameter exceeds a threshold value. The system resumes normal speed governoring flow when that parameter returns to an acceptable level The system also senses rotor blade pitch to reduce rotor droop and increases fuel flow to the engine (49) when the pitch (44) increases, and decreasing the fuel flow to the engine (49) when the rotor blade pitch (44) decreases.

摘要翻译： 一种包括气动调速器的涡轮发动机（49）燃料输送系统具有电子调速器和发动机超压应力避免特征，只要发动机转速超过规定值即禁用气动调速器（70），电子控制单元 （45）继续正常工作。 该系统将控制责任转移到控制扭矩电动机和电磁阀燃料转向管线（22）的电子控制单元（45）。 当所监视的参数超过阈值时，系统监视发动机（49）的运行参数，例如气体发生器速度（37），动力涡轮机转速，发动机输出扭矩或发动机温度，并进一步减少到发动机（49）的燃料流量。 当该参数返回到可接受的水平时，该系统恢复正常速度调节流量。当间距（44）增加时，系统还感测转子叶片间距以减少转子下垂并增加到发动机（49）的燃料流量，并且将燃料流量减少到 当转子叶片间距（44）减小时，发动机（49）。

公开(公告)号：US06357219B1

公开(公告)日：2002-03-19

申请号：US09398133

申请日：1999-09-17

申请人： John E. Dudd, Jr. ,  Dennis G. Demers

发明人： John E. Dudd, Jr. ,  Dennis G. Demers

IPC分类号： F02C726

CPC分类号： F02C9/36 ,  F02C7/26 ,  F02C9/28 ,  F05D2270/112 ,  F05D2270/3032

摘要： A turbine engine fuel delivery system (10) and method has, in addition to the conventional fuel bypass (20) for diverting fuel exiting a fuel control (17) away from the engine (49) and back to a fuel pump (15) to maintain a relatively constant pressure differential across the fuel control (17), a separate controllable flow fuel bypass (21) for selectively diverting fuel exiting the fuel control (17) away from the engine (49) and back to the fuel pump (15) to decrease the rate of fuel flow to the engine (49) and correct an overtemperature condition, and an arrangement for enabling the controllable fuel flow bypass (21) during engine (49) start-up and disabling the controllable fuel flow bypass (21) when the engine (49) reaches normal idle speed. Once an engine (49) start or light off is detected, the system (10) automatically prevents turbine outlet temperature exceedences by reducing metered fuel flow to the engine nozzle. The controllable fuel bypass (21) includes a solenoid operable valve (29). A controller (45) is responsive to sensed exhaust gas temperature and supplies a pulse width modulated control signal to the solenoid operable valve (29) which cyclically enables and disables the return flow of a portion of the fuel flow to the engine (49) from the main fuel control (17) back to the engine fuel pump (15). The period of cyclic enabling and disabling is fixed and the fraction of each cycle during which enabling occurs is controlled in accordance with the monitored exhaust gas temperature. The fuel bypass (21) includes a particulate matter filter (25, 31), a flow limiting orifice (27), and the solenoid actuatable valve (29), and a check valve (23) connected in series between the fuel control (17) and the fuel pump (15).

摘要翻译： 涡轮发动机燃料输送系统（10）和方法除了用于将离开燃料控制器（17）的燃料从发动机（49）转回并返回到燃料泵（15）的常规燃料旁路（20） 在燃料控制器（17）之间保持相对恒定的压力差，分离的可控流量燃料旁路（21），用于选择性地将从燃料控制器（17）排出的燃料远离发动机（49）并返回到燃料泵（15） 以减少燃料流向发动机（49）的速度并修正过热状况，以及用于在发动机（49）启动期间使可控燃料流量旁路（21）能够启动和禁用可控燃料流量旁路（21）的装置， 当发动机（49）达到正常怠速时。 一旦检测到发动机（49）启动或熄灭，系统（10）通过减少计量的燃料流向发动机喷嘴来自动防止涡轮机出口温度超过。 可控燃料旁路（21）包括电磁可操作阀（29）。 控制器（45）响应于检测到的废气温度，并向螺线管可操作的阀（29）供应脉冲宽度调制的控制信号，循环地启用和禁止燃料流向发动机（49）的一部分的回流 主燃料控制器（17）回到发动机燃油泵（15）。 循环启用和禁用的周期是固定的，并且根据监测的排气温度来控制能够发生启动的每个循环的分数。 燃料旁路（21）包括颗粒物质过滤器（25,31），流量限制孔（27）和螺线管致动阀（29），以及止回阀（23），其串联连接在燃料控制器 ）和燃料泵（15）。