公开(公告)号：US5927064A

公开(公告)日：1999-07-27

申请号：US996600

申请日：1997-12-23

申请人： Gerald P. Dyer ,  Mark R. Tardif

发明人： Gerald P. Dyer ,  Mark R. Tardif

IPC分类号： F01D21/02 ,  F02C9/26 ,  F02C9/28 ,  F02C9/46

CPC分类号： F01D21/02 ,  F02C9/263 ,  F02C9/28 ,  F05D2260/85 ,  F05D2270/021

摘要： A start, shutoff and overspeed system includes a shutoff valve which permits the flow of fuel to an engine when the pressure of the main flow of fuel received from the fuel pump at first end of the shutoff valve exceeds a bias pressure at a second end of the shutoff valve. The bias pressure at the second end of the shutoff valve is controlled by an overspeed governor valve operating in conjunction with a start solenoid valve and shutoff solenoid valve. The overspeed governor positions a spool valve in response to engine speed. During engine start the spool valve sets the bias pressure to a first pressure which closes the shutoff valve, permitting fuel flow to the engine. As speed increases the spool must transition to a second position to maintain the shutoff valve in a closed position. If the spool fails to transition, the start solenoid will set the bias pressure such that the shutoff valve will prevent engine start. The overspeed governor will transition to a third position, for an overspeed condition, which controls the bias pressure such that the engine will operate at a reduced speed. The shutoff solenoid operates to shut the engine down regardless of overspeed governor or start solenoid position.

摘要翻译： 起动，关闭和超速系统包括截止阀，当截流阀的第一端从燃料泵接收到的主要燃料流的压力超过第二端的偏压时，允许燃料流向发动机 截流阀。 截止阀第二端的偏压由与启动电磁阀和截止电磁阀一起操作的超速调速阀控制。 超速调速器根据发动机转速定位滑阀。 在发动机启动期间，滑阀将偏压压力设置为关闭截止阀的第一压力，允许燃油流向发动机。 随着速度的增加，阀芯必须转移到第二位置，以将截止阀保持在关闭位置。 如果阀芯无法转换，则起动电磁阀将设置偏压，使截流阀阻止发动机起动。 超速调速器将转换到第三个位置，用于超速状态，其控制偏压，使得发动机将以降低的速度运行。 无论超速调速器或起动电磁阀位置如何，关闭电磁阀都可以关闭发动机。

公开(公告)号：US06250067B1

公开(公告)日：2001-06-26

申请号：US09237848

申请日：1999-01-27

申请人： Gerald P. Dyer ,  Mark R. Tardif ,  David L. Chapski

发明人： Gerald P. Dyer ,  Mark R. Tardif ,  David L. Chapski

IPC分类号： F02C926

CPC分类号： G05B9/03 ,  F02C9/46

摘要： According to the present invention, a fuel control has an electronic primary control for scheduling a flow of fuel to an engine in a primary mode and hydromechanical secondary control for scheduling the flow of fuel to the engine in a backup mode. The fuel control also has a tracking piston and link whose position is responsive to the HMU during the operation of the electronic primary control. The tracking piston and link effectively changes the power lever angle sensed by the HMU so that in the event of a transfer of control from the electronic primary control to the HMU, changes in the scheduled fuel flow to the engine are minimized.

摘要翻译： 根据本发明，燃料控制具有用于调度主模式的发动机的燃料流的电子主控制和用于在备用模式下调度到发动机的燃料流的液压机械二次控制。 燃料控制还具有跟踪活塞和连杆，其位置在电子主控制的操作期间响应于HMU。 跟踪活塞和连杆有效地改变由HMU感测到的动力杆角度，使得在将控制从电子主控制传递到HMU的情况下，到发动机的调度燃料流量的变化被最小化。