公开(公告)号：WO1997013972A1

公开(公告)日：1997-04-17

申请号：PCT/US1996016575

申请日：1996-10-10

Applicant: ALLIEDSIGNAL INC.

Inventor： ALLIEDSIGNAL INC. ,  PERKEY, Russel, C.

IPC: F02C07/228

CPC classification number: F02C7/228 ,  F02C7/232

Abstract: A fuel system including a fuel pump (15) for supplying fuel from a source through a variable orifice flow metering valve (17) and then through a variable orifice pressurizing valve (19) to an engine utilizes a determination of the pressurizing valve orifice area (29, 65) to ascertain the fuel flow through the pressurizing valve. The pressurizing valve includes a movable piston (45) with a piston section movable linearly to open and close selectively an orifice (41, 73). The pressurizing valve may take the form of a cylindrical cavity (59) with the piston reciprocable therein. The cavity is provided with an Inlet port (31) and at least one sidewall outlet port (61, 73; 63, 75) and the piston section slidable along the sidewall outlet port to increase and decrease selectively the effective size of the orifice. A transducer (29) is coupled to the piston to provide an indication of piston position. A second piston section (47) for opening and closing selectively a second orifice (63, 75) may be provided. The piston has one extreme position where both orifices are open, another extreme position where both orifices are closed, a first range of positions where the size of one orifice varies while the other orifice remains closed, and a second range of positions where the sizes of both orifices vary. A linear relationship between orifice area and piston position occurs wherever the outlet ports have a substantially constant circumferential dimension.

Abstract translation: 一种燃料系统，包括用于从源通过可变孔流量计量阀（17）提供燃料然后通过可变孔加压阀（19）向发动机供应燃料的燃料泵，利用加压阀孔面积的确定（ 以确定通过加压阀的燃料流量。 加压阀包括可移动活塞（45），活塞部分可直线移动以选择性地打开和关闭孔口（41,43）。 加压阀可以采用圆柱形空腔（59）的形式，活塞可往复运动。 空腔设置有入口端口（31）和至少一个侧壁出口（61,73; 63,75），活塞部分可沿着侧壁出口端滑动以选择性地增加和减少孔口的有效尺寸。 传感器（29）联接到活塞以提供活塞位置的指示。 可以提供用于选择性地打开和关闭第二孔（63,75）的第二活塞部分（47）。 活塞具有一个极端位置，其中两个孔是开放的，另一个极端位置，两个孔都关闭，一个孔口的尺寸在另一个孔口保持关闭的同时第一范围的位置以及第二范围的位置， 两个孔都不同。 喷嘴面积和活塞位置之间的线性关系发生在出口端口具有基本恒定的周向尺寸的任何位置。

公开(公告)号：EP0854976B1

公开(公告)日：2000-12-27

申请号：EP96936570.9

申请日：1996-10-10

Applicant: AlliedSignal Inc.

Inventor： PERKEY, Russel, C.

IPC: F02C7/228 ,  F02C7/232

CPC classification number: F02C7/228 ,  F02C7/232

Abstract: A fuel system including a fuel pump (15) for supplying fuel from a source through a variable orifice flow metering valve (17) and then through a variable orifice pressurizing valve (19) to an engine utilizes a determination of the pressurizing valve orifice area (29, 65) to ascertain the fuel flow through the pressurizing valve. The pressurizing valve includes a movable piston (45) with a piston section movable linearly to open and close selectively an orifice (41, 73). The pressurizing valve may take the form of a cylindrical cavity (59) with the piston reciprocable therein. The cavity is provided with an Inlet port (31) and at least one sidewall outlet port (61, 73; 63, 75) and the piston section slidable along the sidewall outlet port to increase and decrease selectively the effective size of the orifice. A transducer (29) is coupled to the piston to provide an indication of piston position. A second piston section (47) for opening and closing selectively a second orifice (63, 75) may be provided. The piston has one extreme position where both orifices are open, another extreme position where both orifices are closed, a first range of positions where the size of one orifice varies while the other orifice remains closed, and a second range of positions where the sizes of both orifices vary. A linear relationship between orifice area and piston position occurs wherever the outlet ports have a substantially constant circumferential dimension.

公开(公告)号：EP0854976A1

公开(公告)日：1998-07-29

申请号：EP96936570.0

申请日：1996-10-10

Applicant: AlliedSignal Inc.

Inventor： PERKEY, Russel, C.

IPC: F02C7 ,  F16K37 ,  F23R3

CPC classification number: F02C7/228 ,  F02C7/232

Abstract: A fuel system including a fuel pump (15) for supplying fuel from a source through a variable orifice flow metering valve (17) and then through a variable orifice pressurizing valve (19) to an engine utilizes a determination of the pressurizing valve orifice area (29, 65) to ascertain the fuel flow through the pressurizing valve. The pressurizing valve includes a movable piston (45) with a piston section movable linearly to open and close selectively an orifice (41, 73). The pressurizing valve may take the form of a cylindrical cavity (59) with the piston reciprocable therein. The cavity is provided with an Inlet port (31) and at least one sidewall outlet port (61, 73; 63, 75) and the piston section slidable along the sidewall outlet port to increase and decrease selectively the effective size of the orifice. A transducer (29) is coupled to the piston to provide an indication of piston position. A second piston section (47) for opening and closing selectively a second orifice (63, 75) may be provided. The piston has one extreme position where both orifices are open, another extreme position where both orifices are closed, a first range of positions where the size of one orifice varies while the other orifice remains closed, and a second range of positions where the sizes of both orifices vary. A linear relationship between orifice area and piston position occurs wherever the outlet ports have a substantially constant circumferential dimension.