186 results about "Displacement mode" patented technology

A system and method for controlling an internal combustion engine operable with a first cylinder firing frequency and a second cylinder firing frequency to reduce or eliminate transmission of torsional vibrations associated with the second cylinder firing frequency to reduce or eliminate constraints on reduced displacement mode operation using a closely coupled drive train component rotating in an opposite direction relative to rotating components of the engine. A close coupling device allows the inertia of the counter-rotating elements to reduce or eliminate the torque reaction of the drivetrain associated with acceleration and deceleration of the engine crankshaft in response to the second cylinder firing frequency in the reduced displacement mode.

A method and system for controlling an ultrasonically driven handpiece employable in an ocular surgical procedure is provided. The method includes operating the ultrasonically driven handpiece in a first tip displacement mode, such as a longitudinal mode according to a first set of operational parameters, and enabling a user to alter the ultrasonically driven handpiece to employ a second tip displacement mode, such as a transversal or torsional mode, using a second set of operational parameters. Enabling the user to alter performance of the handpiece comprises the user being enabled to dynamically select operational parameters for the first tip displacement mode relative to the second tip displacement mode by using, for example, a switching apparatus such as a footpedal.

A system or method for controlling a multiple cylinder internal combustion engine operable in a reduced displacement mode with at least one valve or cylinder selectively deactivated include monitoring valve operation by analyzing camshaft position to detect valve operation inconsistent with a current cylinder state (activated or deactivated) and controlling the engine in response to detecting the inconsistent operation. The camshaft position may be used to produce a surrogate signal indicative of intake / exhaust valve lift generated using camshaft sensor tooth deviation relative to an expected or reference tooth position for a corresponding crankshaft position and compared to a corresponding threshold. The surrogate signal indicative of valve lift may also be generated by pattern matching or correlation of one or more reference tooth position patterns to a measured or inferred tooth position pattern.

A tire assembly with integrated power generation features includes one or more piezoelectric devices and power conditioning modules. Piezoelectric devices may include a plurality of piezoelectric fibers embedded in a generally unidirectional fashion within an epoxy matrix, a piezoceramic wafer provided on a substrate and substantially surrounded by a protective casing, or a piezoceramic unimorph structure adhered with a thermoplastic polyimide to respective top and bottom conductive layers. Each piezoelectric device may include multiple piezoelectric elements connected in series and / or parallel arrangements, configured with respective poling directions in opposing or in-phase arrangements and / or configured in d33 or d31 displacement modes. Piezoelectric devices are preferably mounted within a tire or wheel assembly such that electric charge is generated therein as the wheel assembly moves along a ground surface and is subsequently stored in one or more energy storage devices. Stored energy may then be used to power electronics such as a tire monitoring system that wirelessly transmits such information as tire pressure, temperature and identification variables to a remote receiver location.

The invention relates to a self-born acid composite acid fracturing process for a high-temperature deep well carbonate rock reservoir. The process comprises the following work procedures of: (1) injecting slick water into a stratum through an oil pipe; (2) injecting non-crosslinked fracturing liquid into the stratum through the oil pipe; (3) injecting a self-born acid system into the stratum through the oil pipe; (4) injecting a gelled acid system into the stratum through the oil pipe in a low-displacement mode; and (5) injecting the slick water into the stratum through the oil pipe, wherein the volume proportions of liquid, accounting for the total liquid injected into the stratum, injected in the first to fifth work procedures are shown as follows: the slick water in the first work procedure accounts for 3 to 10 percent; the non-crosslinked fracturing liquid in the second work procedure accounts for 40 to 60 percent; the self-born acid system in the third work procedure accounts for 30 to 50 percent; the gelled acid system in the fourth procedure accounts for 3 to 10 percent; the volume proportion of the slick water in the fifth work procedure is 3 to 15 percent; and the volume unit is m<3>. Through the self-born acid composite acid fracturing process, the flow guide capability is improved by more than 140md.m, and the deep penetration effect of the high-temperature deep well carbonate rock reservoir is obvious.

A system or method for controlling a multiple cylinder internal combustion engine operable in a reduced displacement mode with at least one valve or cylinder selectively deactivated include controlling the engine in response to detecting opening of an exhaust valve after deactivation based measured or inferred exhaust pressure changes after deactivation. In one embodiment, controlling the engine includes reactivating one or more deactivated cylinders / valves, inhibiting subsequent deactivation, and / or storing a diagnostic code in a computer readable storage medium in response to detecting valve opening after deactivation.

The invention discloses a girder structure dynamic deflection monitoring method based on a strain mode. The method is characterized in that a strain sensor is adopted for carrying out strain testing on a vibrating girder structure to obtain dynamic strain data, a strain mode shape is worked out through a cross-correlation function of the dynamic strain data, a displacement mode shape is worked out through a strain-displacement conversion relation, then, displacement mode coordinates are worked out through the dynamic strain data and the strain mode shape, finally, a real-time deflection line of the girder structure is obtained by superimposing the worked-out displacement mode coordinates on the displacement mode shape, and therefore monitoring of the dynamic deflection is achieved. According to the method, on the premise of guaranteeing precision, the dynamic deflection of the girder structure can be monitored through simple equipment at a low cost.

A method for estimating an output torque generated by a multi-displacement engine operating in a partial-displacement mode includes multiplying a measure representing a mass air flow through the engine's intake manifold by a engine-speed-based mass-air-flow-to-torque conversion factor, and thereafter summing the product with a torque offset value likewise based on engine speed data, to obtain a base indicated potential output torque. The base indicated potential output torque is then multiplied with a torque-based efficiency conversion factor representing at least one of a partial-displacement mode spark efficiency, fuel-air-ratio efficiency, and exhaust gas recirculation efficiency, and the resulting product is summed with a torque-based frictional loss measure to obtain the desired estimated engine output torque. The estimated engine output torque is particularly useful in determining whether a transition from the partial-displacement engine operating mode to a full-displacement engine operating mode is desired.

The invention provides a method for preparing natural gas without sulfur by marsh gas, which comprises the steps of: a, impurity removal; b, desulfurization; c, pressurized pushing; d, absorption displacement, namely carbon dioxide gas contained in the marsh gas processed by the steps is absorbed through an absorption tower in a solution displacement mode; e, cooling dehydration, namely the marsh gas processed by the steps is cooled and finishes the dehydration, and the water content of the marsh gas is controlled to be below 80 percent of relative humidity; and f, secondary filtration, namely the marsh gas processed by the step e is further filtered through a secondary filtration device to remove other impurities in the marsh gas to obtain the natural gas without the sulfur (the content of methane is between 85 and 99 percent). The invention also discloses a device for preparing the natural gas without the sulfur by the marsh gas. The method has the advantages that the marsh gas has high purity and is suitable to be massively and efficiently utilized, the utilization rate of raw materials for preparing the marsh gas is improved and the like.

The invention relates to a three-dimensional simulation device for an edge / bottom water reservoir. The device comprises a body and a detachable moving side wall which is arranged on the side surface of the body, wherein an accommodating cavity is formed in the body; a gland is arranged on the top of the body; a piston is arranged on the lower part of the gland; a plurality of vent holes communicated with the accommodating cavity are formed in the gland; an annular groove in which a clapboard can be arranged in a sealing mode is formed in the peripheral side wall of the accommodating cavity; a plurality of poroid functional measuring points are formed on all the wall surfaces of the body and the gland and are communicated with the accommodating cavity in a controlled mode; a plurality of granular porous media are fully filled in the accommodating cavity; and a plurality of pipe columns for simulating a mineshaft are arranged in the granular porous media in the accommodating cavity. By the device, edge / bottom water reservoirs which have different thicknesses and are developed at different dip angles in different displacement modes and different well pattern types can be subjected to physical simulation experiment, so that an oil-water percolation mechanism of an oil and gas reservoir can be researched, and the effects of the edge / bottom water reservoirs in different development modes can be evaluated.

A vessel (10) designed to operate efficiently as both a catamaran and air cushion vessel can travel at low speed (e.g. Froude number (Fn)=0-0.3) in a catamaran or displacement mode and at high speed (e.g. Froude numbers (Fn)=0.3 or more) in an air cushion or dynamically supported mode. The vessel (10) includes molded catamaran hulls (11, 12) with parabolic waterlines, a flexible, air cushion seal system (16, 17), surface piercing propellers (20) and a propulsion system (e.g. combined diesel and gas turbine). There are preferably auxiliary gas turbines for generating lift air pressure. Forward mounted independently stabilizing foils (30), can optionally facilitate ride stabilization and load compensation at high and low speeds. The foils also generate transverse roll forces to improve high speed maneuvering.

The present invention provides methods and apparatus for accomplishing a strong phase shift direct write lithography process using reconfigurable optical mirrors. A maskless lithography system is provided. The maskless direct-write lithography system provided uses an array of mirrors configured to operate in a tilting mode, a piston-displacement mode, or both in combination. The controlled mirror array is used to generate strong phase shift optical patterns which are directed onto a photoimageable layer of a substrate in order to facilitate pattern transfer. In order to avoid constraining the system to forming edges of patterns aligned with the array of mirrors, gray-scale techniques are used for subpixel feature placement.

The invention discloses a simulation long board-peg work centrifugal model and a test unit and a method thereof, wherein the centrifugal model comprises a box, a simulation roadbed and a simulation drain board, a polyvinyl chloride (PVC) tube is adopted to produce a cement mixing pile model, and the slurry is poured into the box for a plurality of times to produce the simulation roadbed; and woolen yarns are adopted as the simulation drain board, and the simulation drain board is vertically fed into a soil body to the designated depth of the soil body. The test unit utilizes a hydraulic jack to realize the dynamic grading loading of the centrifugal model test through a loading board, and various test data are measured by a measurement system. The invention can reasonably study the loading characteristics of the side sway modes of different soil bodies which are loaded by an axial load-bearing pile, can obtain the inner displacement mode of the soil body applying on the surface of the pile body, the limitation of the theoretical analysis is made up, and the key technology of simulating the long board-peg roadbed and the embankment load construction process is provided.

A tire assembly with integrated power generation features includes one or more piezoelectric devices and power conditioning modules. Piezoelectric devices may include a plurality of piezoelectric fibers embedded in a generally unidirectional fashion within an epoxy matrix, a piezoceramic wafer provided on a substrate and substantially surrounded by a protective casing, or a piezoceramic unimorph structure adhered with a thermoplastic polyimide to respective top and bottom conductive layers. Each piezoelectric device may include multiple piezoelectric elements connected in series and / or parallel arrangements, configured with respective poling directions in opposing or in-phase arrangements and / or configured in d33 or d31 displacement modes. Piezoelectric devices are preferably mounted within a tire or wheel assembly such that electric charge is generated therein as the wheel assembly moves along a ground surface and is subsequently stored in one or more energy storage devices. Stored energy may then be used to power electronics such as a tire monitoring system that wirelessly transmits such information as tire pressure, temperature and identification variables to a remote receiver location.

The invention relates to a productivity prediction method for displacement development of an oilfield flooding well network. The method comprises the following steps of (1) establishing a development productivity prediction model of a conventional petroleum reservoir water flooding well network; (2) introducing a displacement comprehensive coefficient, and popularizing the displacement comprehensive coefficient to various petroleum reservoir types and displacement development modes; (3) analyzing and screening relevant parameters which can reflect characteristics of the displacement development modes and have important influences on productivity results; (4) establishing a numerical model of the researched well network type and displacement development mode by use of a petroleum reservoir numerical simulation method; (5) calculating and analyzing a single factor correlation between the characteristic parameter in step (3) and the displacement comprehensive coefficient; (6) obtaining a plurality of groups of productivity results through calculation; (7) obtaining a productivity prediction model of the corresponding flooding well network displacement mode; and (8) respectively verifying the accuracy of the productivity prediction model. The method is relatively strong in universal applicability and can carry out a rapid and effective comparative analysis.

The present invention provides an optimized direct write lithography system using optical mirrors. That is, a maskless lithography system is provided. The maskless direct-write lithography system provided uses an array of mirrors configured to operate in a tilting mode, a piston-displacement mode, or both in combination. The controlled mirror array is used as a substitute for the traditional chrome on glass masks. In order to avoid constraining the system to forming edges of patterns aligned with the array of mirrors, gray-scale techniques are used for subpixel feature placement. The direct-writing of a pattern portion may rely on a single mirror mode or a combination of modes.

The invention relates to a centrifugal model retaining wall test device, belonging to the research technical filed of soil pressure centrifugal model test. The device comprises a driving system, a model retaining wall structure, a measurement system and a displacement automatic control system of model retaining wall. The added displacement automatic control system of model retaining wall can guarantee the model retaining wall to be remained at rest during centrifugal acceleration is increased; by adopting an electric motor as the driving system, the displacement of the model retaining wall can be guaranteed to be slow, homogeneous and continuous, and a data acquisition system can be guaranteed to completely record a change process of soil pressure and soil body displacement field during the model retaining wall moves; and an improved structure of the model retaining wall leads the model retaining wall to keep translatory displacement model. The preliminary experimental result shows that the device has stable capability, reliable operation and convenient operation, and is suitable for the research of the rest condition of the rigid retaining wall and the soil pressure of a driving side.

The invention provides an experimental device for measuring influences of water injection and gas injection on petroleum reservoir exploitation. The experimental device comprises an injection system, an experiment implementation system and a detecting and processing system. The injection system is communicated with the experiment implementation system. The detecting and processing system is electrically connected with the experiment implementation system. According to the experimental device, one side face of an experiment box is arranged into a transparent side wall, and therefore workers can visually observe the dynamic state and the flow process of fluid and analyze the dynamic stage and the flow process, and workers can be assisted in more accurately understanding influences of different water injection and gas injection conditions on petroleum reservoir exploitation. The invention further provides an experimental method for measuring influences of water injection and gas injection on petroleum reservoir exploitation. By means of the experimental method, petroleum reservoir and displacement modes can be more accurately stimulated, and influences of displacement modes on petroleum reservoir exploitation are more accurately measured through the combination with the observed dynamic stage and the observed flow process of fluid.

The invention relates to a constraint competition counting code circuit with in-phase shift method. Wherein, it comprises a 16-bit shift register (A), 16-bit shift register (B), 4-bit output register (C), initialize preset switch (D), initialize preset switch (E), while the highest and lowest bits of shift registers (A, B) are end-to-end connected, and the registers (A, B) are preset by the switches (D, E) into fixed character sequence; the counting impulse is connected to the shift control port (CLK) of 16-bit register; the 0 bits of registers (B, A) are connected to the lower two bits of 4-bit output latch; the twelve 12s of registers (B, A) are connected to the higher two bits of 4-bit output latch; after initialization preset, inputting impulse, using in-phase shift to count and output constraint competition counting code.

The invention discloses a soil pressure testing device and method for an anchor-plate-like retaining wall in different displacement modes. A problem that soil pressure distribution rules of the retaining wall in the different displacement modes cannot be tested and researched is solved by the soil pressure testing device and method. The soil pressure distribution rules of the retaining wall in thedifferent displacement modes are researched. The technical scheme is that the soil pressure testing device comprises a base, the base is provided with a test soil loading box, the test soil loading box is a frame-type structure, and the test soil loading box is filled with a soil body; one side wall of the test soil loading box is throughout provided with an anchor rod, the anchor rod is extendedto the outer side of the test soil loading box and is connected with a prestress loading device; and the top of the test soil loading box is provided with a cover load loading device, and the outer side of the side wall, throughout provided with the anchor rod, of the test soil loading box is connected with a lateral displacement loading device.

The invention provides a variable-displacement-ratio double-stage compression air conditioner system and a control method thereof. The variable-displacement-ratio double-stage compression air conditioner system comprises a variable-displacement-ratio double-stage compressor (1). A low-pressure suction pipeline (2), a high-pressure exhaust pipeline (3) and a capacity-variable pipeline (4) are arranged on the compressor in a connected mode. Low-pressure stage double air cylinders of the double-stage compressor are made to operate by introducing high pressure into the capacity-variable pipeline (4), and one low-pressure stage single air cylinder of the double-stage compressor is made to operate by introducing low pressure. Switching control over the displacement ratio can be realized by introducing high pressure or low pressure into the capacity-variable pipeline, switching control over the displacement ratio is carried out through the above ways according to the indoor unit capacity requirement and overall load, the air conditioner system operates in a large displacement mode when the load is small and operates in a small displacement mode when the load is large, and the operating efficiency of the system is maximized, so that the technical problem of poor economy existing when the load is too small or too large is solved.

The invention belongs to the field of acoustic metamaterial and discloses an acoustic wave focusing device based on an intrinsic displacement mode. The acoustic wave focusing device is a metallic ring-like structure and immersed in water, the metallic ring-like structure is made of copper, iron, steel, aluminum, zinc, gold, silver, nickel and synthetic metal; the acoustic wave focusing device is excellent in acoustic focusing effect, and energy is centralized because the focus is arranged at the central point of the ring-like structure; the frequency coverage area is wide, and the focusing frequency is changed in the range from 100Hz to 1GHz; the acoustic focusing effect is wide in application range and applied for the circular-ring, square or elliptical-ring structure; the acoustic wave focusing device is simple in structure, easy to realize, process and integrate, and proper in size.

The invention provides a lateral displacement type multifunctional model tank experiment system. The model tank experiment system comprises a model tank part, an experimental loading part and a measurement part, wherein the model tank part is connected with the experimental loading part through a bolt; and the measurement part is fixed on the model tank part through a bolt. The system has the effects that the experiment system can perform multiple tests according to specific experiment requirements. The posture of a movable baffle wall is adjusted, so that related experiments in various displacement modes can be performed; the position of the movable baffle wall is limited, so that model tank experiments of different sizes can be realized; the movable baffle is removed, so that related experiments under the condition that lateral limit does not exist can be realized; the movable baffle wall is replaced by a plate made of a broken material, and a tunnel excavation related experiment can be simulated; the movable baffle wall is fixed, so that various pile foundation experiments can be performed; due to rainfall equipment, problems related to rainfall can be simulated; the experimental result can be intuitively seen through an exterior measurement system, and due to the counter-force balance of a counter-force rack, the experiment system has high independence, and the experimental implementation difficulty is reduced.

A shock-isolation system having a platform for supporting an operator station and a console which can both be fixedly secured to the platform in a relative non-displacement mode with the platform supported by a shock mount that simultaneously isolates the platform including an operator, the operator station and the console as a unitary component from high “g” shock to thereby minimize injury to an operator due to impact with either the operator station, the console or the platform.

The invention discloses a treatment method for shear lag of an inverted U-shaped composite beam. According to the treatment method for the shear lag of the inverted U-shaped composite beam, a shear lag warping displacement mode is reasonably supposed for section structure characteristics of the inverted U-shaped composite beam; on the basis of the minimum potential energy principle, an equilibrium equation in the variational form is established; and the continuous variational equilibrium equation is converted into a discrete finite beam segment method through introducing displacement interpolation functions of two shear lag freedom degrees of each node so as to obtain an element stiffness matrix which considers the shear lag effect. A related application program is written to carry out fine analysis on the construction process of an inverted U-shaped composite beam cable-stayed bridge. The treatment method for the shear lag of the inverted U-shaped composite beam has the advantages that shear lag displacement boundary condition mutation caused by concentrated bending moment in the cable-stayed bridge can be treated, the stress state of girder section in the construction process can be really reflected and the accuracy of the construction process of the inverted U-shaped composite beam cable-stayed bridge can be improved. The treatment method for the shear lag of the inverted U-shaped composite beam has the advantages of clear mechanical conception, simple calculation and broad application prospect and is a useful addition to the shear lag treatment method in the current specifications.

The invention discloses a determination method of deformation of a soil body caused by pipe jacking construction by considering grouting pressure. The determination method comprises the following steps: determining parameters of a soil layer of a place by geological survey, then determining bulkhead additive thrust and displacement caused by friction force on the side surface by using a Mindlin displacement solution, determining the displacement and the deformation caused by the grouting pressure through a three-dimensional round hole expansion theory and determining the deformation caused by loss of the soil body and the like by a Sagaseta soil body displacement mode caused by the loss of the soil body; and finally determining the deformation of the soil body caused by the pipe jacking construction by superimposing the deformation caused by four factors and further providing a basis for the pipe jacking construction. According to the determination method disclosed by the invention, one-sidedness and unreliability in deformation prediction in the past are avoided, and the determination method has the main advantage of being more accurate to predict the deformation caused by the pipe jacking construction relative to a traditional method; and furthermore, the method is simple.