公开(公告)号：US3763744A

公开(公告)日：1973-10-09

申请号：US3763744D

申请日：1971-03-11

Applicant: BOSCH GMBH ROBERT

Inventor： LOCHER J ,  FOURNELL H ,  ADLER K

IPC: F15B21/08 ,  F15B15/17 ,  F15B9/03 ,  F15B9/09

CPC classification number: F15B21/087

Abstract: A servo loop for correcting the position of a piston operating against a load has a control unit comprising a three point regulator for operating two on-off valves and a pulse length modulator for operating a switch over valve, the on-off and switch over valves being connected to the piston cylinder, a pressure tank, and a collection tank, so as to move the piston in either of two directions. The three point regulator and the pulse length modulator are driven by the difference between the desired signal and the actual signal, the latter being obtained from an inductive displacement pickup coupled to the piston rod.

Abstract translation: 用于校正活塞抵抗负载的活塞位置的伺服回路具有控制单元，该控制单元包括用于操作两个开关阀的三点调节器和用于操作切换阀的脉冲长度调制器，开关阀和切换阀 连接到活塞缸，压力罐和收集箱，以便在两个方向中的任一方向上移动活塞。 三点调节器和脉冲长度调制器由期望信号和实际信号之间的差值驱动，后者是从耦合到活塞杆的感应位移拾取器获得的。

公开(公告)号：US3831495A

公开(公告)日：1974-08-27

申请号：US38720173

申请日：1973-08-09

Applicant: BOSCH GMBH ROBERT

Inventor： ARNOLD W ,  LOCHER J

IPC: F16K31/06 ,  F15B11/08 ,  F15B21/08 ,  F15B13/044

CPC classification number: F15B20/008 ,  F15B21/08 ,  F15B2013/0409 ,  F15B2211/30525 ,  F15B2211/324 ,  F15B2211/329 ,  F15B2211/8636 ,  F15B2211/8755

Abstract: The system includes a hydraulic user device and a source of hydraulic fluid. A hydraulic arrangement connects the source of fluid to the user device and provides a path for the flow of fluid from the source to the user device, and includes a control member positioned in such path and mounted for movement between a plurality of positions in different ones of which the control member differently affects the flow of fluid from the source to the user device, including a neutral position in which the control member blocks the flow of fluid from the source to the user device. An electrohydraulic moving arrangement is operative when electrically energized for moving the control member by applying hydraulic force thereto. A restoring arrangement is operative for applying to the control member a restoring force tending to move the control member to said neutral position when the electrohydraulic moving arrangement is electrically unenergized. An electrical control arrangement controls the electrohydraulic moving arrangement and includes a source of electrical power having two terminals, connectors connecting the source of electrical power to the electrohydraulic moving arrangement for furnishing electrical energy to the latter, a remote control arrangement and an electrical control cable having a first cable end connected to the electrohydraulic moving unit and a second cable end connected to the remote control arrangement, the control cable comprising a first conductor having at the first cable end a first end connected to one terminal of the source of electrical power and having a second end at the second cable end, a second conductor extending along the length of the cable and having a first end at the first cable end and a second end at the second cable end. A fail-safe unit prevents electrical energization of the electrohydraulic moving arrangement when a short-circuit develops between the first and second conductors, to prevent the application by the electrohydraulic moving arrangement of hydraulic force to the control member and to thereby cause the control member to be returned to the neutral position by the restoring means.

公开(公告)号：US3796197A

公开(公告)日：1974-03-12

申请号：US3796197D

申请日：1971-03-05

Applicant: BOSCH GMBH ROBERT

Inventor： LOCHER J ,  SCHONART E ,  ADLER K

IPC: F02B3/06 ,  F02D41/38 ,  F02D41/40 ,  G05D3/18 ,  F02P5/04 ,  F02B3/00

CPC classification number: G05D3/18 ,  F02B3/06 ,  F02D41/38 ,  F02D41/401 ,  Y02T10/44

Abstract: Arrangement for controlling fuel injection. Transducers generate first and second signals indicative of first and second engine operating conditions. Fuel-quantity selector generates electrical quantity signal indicative of the quantity of fuel to be injected per combustion cycle as a predetermined function of said first and second signals. Timer generates electrical timing signal indicative of time of commencement of fuel injection with respect to the combustion cycle as a predetermined function of said first and second electrical signals. Fuel-injection means commences fuel injection at a time with respect to the combustion cycle indicated by said timing signal, and at such time injects an amount of fuel indicated by said quantity signal.

Abstract translation: 燃油喷射控制装置 传感器产生指示第一和第二发动机操作条件的第一和第二信号。 燃料量选择器产生指示每燃烧循环中要喷射的燃料量的电量信号作为所述第一和第二信号的预定函数。 定时器产生指示相对于燃烧循环的燃料喷射开始时间的电定时信号，作为所述第一和第二电信号的预定函数。 燃料喷射装置相对于由所述定时信号指示的燃烧循环一次开始燃料喷射，并且在此时喷射由所述数量信号指示的燃料量。