公开(公告)号：US3621861A

公开(公告)日：1971-11-23

申请号：US3621861D

申请日：1969-11-12

Applicant: BOWLES FLUIDICS CORP

Inventor： BOWLES ROMALD E

IPC: F15C1/04 ,  F15C1/14 ,  F15C3/00

CPC classification number: F15C1/04 ,  F15C1/14 ,  Y10T137/2076 ,  Y10T137/218 ,  Y10T137/2251 ,  Y10T137/2256

Abstract: TECHNIQUES ARE DISCLOSED WHEREIN SYMMETRY OF OPERATION, GAIN AND/OR FREQUENCY RESPONSE CHARACTERISTICS OF FLUIDIC AMPLIFIERS MAY BE SELECTIVELY VARIED. IN ONE TECHNIQUE AN AMPLIFIER VENT PASSAGE IS PROVIDED WITH ONE OR MORE INSERTS WHICH CHANGE IN SIZE AND SHAPE IN RESPONSE TO TEMPERATURE AND/OR QUALITATIVE COMPOSITION OF THE WORKING FLUID, THE LATTER TWO PARAMETERS BEING SELECTIVELY VARIABLE TO CHANGE THE FLOW IMPEDANCE OF THE VENT PASSAGE. ANOTHER TECHNIQUE EMPLOYS A SIMILAR INSET IN A FLUIDIC CAPACITOR CONNECTED TO THE AMPLIFIER OUTPUT PASSAGE, WHEREBY THE CAPACITY OF THE OUTPUT PASSAGE, AND HENCE THE FREQUENCY RESPONSE OF THE AMPLIFIER, IS SELECTIVELY VARIABLE WITH EITHER WORKING FLUID TEMPERATURE OR WORKING FLUID QUALITATIVE COMPOSITION. IN STILL ANOTHER TECHNIQUE THE REYNOLDS NUMBER OF A POWER STREAM IN A TURBULENCE AMPLIFIER IS SELECTIVELY VARIED BY VARYING FLUID TEMPERATURE, PRESSURE AND/OR QUALITATIVE COMPOSITION, WHEREBY TO VARY THE SENSITIVITY OF THE POWER STREAM TO TURBULENCE IN RESPONSE TO DIFFERENT INPUT SIGNAL FREQUENCIES. IN ANOTHER TECHNIQUE FLUIDIC CAPACITORS, CONNECTED TO THE INPUT AND/OR OUTPUT PASSAGES OF A FLUIDIC AMPLIFIER, ARE SELECTIVELY VARIED BY INTRODUCING VARIABLE QUANTITIES OF CONTROL FLUID INTO THE CAPACITORS, THE VARIABLE CAPACITY PROVIDES CORRESPONDING VARIABLE AMPLIFIER FREQUENCY RESPONSE CHARACTERISTICS. IN ANOTHER TECHNIQUE, THE POWER STREAM PRESSURE IN A FLUIDIC AMPLIFIER IS AUTOMATICALLY VERIED TO MAINTAIN THE MINIMUM POWER STREAM PRESSURE NECESSARY TO PROVIDE A LINEAR AMPLIFIER GAIN CHARACTERISTICS FOR VARYING INPUT SIGNAL RANGES.

公开(公告)号：US3586020A

公开(公告)日：1971-06-22

申请号：US3586020D

申请日：1968-06-20

Applicant: BOWLES FLUIDICS CORP

Inventor： BOWLES ROMALD E

IPC: F15C1/14 ,  F15C1/12

CPC classification number: F15C1/146 ,  Y10T137/2142 ,  Y10T137/2147

Abstract: Variable function generation techniques are disclosed for fluidic systems. One technique employs a fluidic amplifier which is constructed to provide an output signal as a variable function of an input signal in accordance with selectively variable proportioning of the input signal among the amplifier input ports. Alternatively, the input signal is variably proportioned between plural amplifiers having different gain characteristics, the output signals of each amplifier being combined to provide a common signal. A still further alternative comprises amplification of a differential pressure signal in a proportional three-output passage fluidic amplifier, the three output signals from the amplifier being selectively paired to provide various functions of the input signal, the various functions in turn being selectively gated to provide an output signal comprising various combinations of the functions.

公开(公告)号：US3586065A

公开(公告)日：1971-06-22

申请号：US3586065D

申请日：1967-12-26

Applicant: BOWLES FLUIDICS CORP

Inventor： BOWLES ROMALD E

IPC: B63B27/24 ,  B63B27/26 ,  B63B27/34

CPC classification number: B63B27/26 ,  B63B27/24 ,  Y10T137/9682

Abstract: Fluid is transferred from a supply station to one or more receiving stations separated from the supply station and in motion relative thereto, by directing a coherent, high-velocity, well-defined jet of the fluid from a discharge nozzle or nozzles, whose orientation may be varied according to the relative movement of the respective receiving station, toward and into a fluid catcher at the receiving station from which the received fluid may be distributed to appropriate storage tanks. The fluid jet is unconfined throughout its path from the supply station to the receiving station, passing directly through the open space between the stations, the maintenance of integrity of the jet over that path depending upon such factors as discharge nozzle design, supply pressure, and viscosity of the fluid.

公开(公告)号：US3687147A

公开(公告)日：1972-08-29

申请号：US3687147D

申请日：1970-08-05

Applicant: BOWLES FLUIDICS CORP

Inventor： BOWLES ROMALD E ,  STOUFFER RONALD D

IPC: F15C1/14

CPC classification number: F15C1/14 ,  Y10T137/0318 ,  Y10T137/2169

Abstract: A jet velocity augmentation scheme employs a pulsed fluid source of relatively incompressible fluid which produces at least two fluid jets which are caused to impact on one another with the leading faces of the fluid jets at a relatively small angle, for instance

Abstract translation: 射流速度增加方案采用相对不可压缩流体的脉冲流体源，其产生至少两个流体射流，这些流体射流相互冲击，流体射流的引导面以相对较小的角度，例如<60° 面之间有一个中心线。 由于在流体段塞的表面之间限定的空腔的塌缩，产生了成形的电荷效应。 喷射速度结果的增加和3.5至11.5倍量级的速度增加可能取决于流体块塞的表面的角度。 这导致相应的最终速度压力放大为原始速度压力的12.25至132.25倍的量级。

公开(公告)号：US3587764A

公开(公告)日：1971-06-28

申请号：US3587764D

申请日：1968-06-20

Applicant: BOWLES FLUIDICS CORP

Inventor： BOWLES ROMALD E

IPC: F02P5/145 ,  B60K27/06

CPC classification number: F02P5/1455 ,  Y02T10/46 ,  Y10S123/10 ,  Y10T137/0379 ,  Y10T137/2098

Abstract: SPARK TIMING IN A SPARK IGNITION ENGINE IS CONTROLLED TO PROVIDE MAXIMUM ENGINE TORQUE BY UTILIZING A FLUIDIC LOGIC CIRCUIT IN COMBINATION WITH AN ACTUATOR FOR SELECTIVELY ADVANCING AND RETARDING SPARK TIMING IN RESPONSE TO FLUID SIGNALS AND A SENSOR FOR DETECTING INCREASING AND DECREASING ENGINE TORQUE. AT ANY GIVEN ENGINE SPEED THE LOGIC CIRCUIT SEEKS THE ACTUATOR DIRECTION WHICH PRODUCES INCREASING TORQUE BY PROVIDING SIGNALS WHICH MOVE THE ACTUATOR ALTERNATELY TO ADVANCE AND RETARD THE SPARK TIMING AND BY SENSING THE RESULTING INCREASE OR DECREASE IN ENGINE TORQUE. AN INCREASE IN ENGINE TORQUE CAUSES THE CIRCUIT TO CONTINUE TO MOVE THE SPARKTIMING ACTUATOR IN THE SAME DIRECTION, A DECREASE IN ENGINE TORQUE RESULTS IN A REVERSAL OF THE ACTUATOR DIRECTION. THE SPARK TIMING IS THEREFORE ADJUSTED UNTIL THE MAXIMUM TORQUE IS REALIZED AND THE CONTROL SYSTEM THEN ENTERS A LOW-AMPLITUDE MODE OF OSCILLATION ABOUT THE MAXIMUM-TORQUEPRODUCING ACTUATOR POSITION UNTIL A TORQUE VARIATION IS ONCE AGAIN SENSED.