Abstract: A novel vehicle-mounted wireless charging system is disclosed, which includes a transmitter. The transmitter includes a full-bridge unit, a compensating unit, a transmitting unit and a selecting unit. The full-bridge unit consists of one or two full-bridge modules, the compensating unit consists of two or more compensating network modules, the transmitting unit consists of multiple transmitting coils, and the selecting unit is used for switching different coils. Two full-bridge modules, two compensating network modules and multiple transmitting coils form a first mode, different full-bridge modules are selected to charge different models of mobile phones by switching through the selecting unit; one full-bridge modules, two groups of compensating network modules and multiple transmitting coils form a second mode, different compensating network modules are selected to charge different models of mobile phones by switching through the selecting unit.

Abstract: Operating an engine system includes cold starting an engine, closing spill valves to pressurize fuel in a plurality of plunger cavities, opening injection valves in some of a plurality of fuel injectors to inject fuel into firing cylinders in an engine cycle, and opening spill valves in some of the plurality of fuel injectors while injection valves therein remain closed to bleed fuel to a lower pressure space in the engine cycle. The pressurization of fuel in the fuel injectors remaining closed parasitically loads the engine to increase a fuel burned amount hastening warm up and limiting misfire. Related apparatus and control logic is also disclosed.

Abstract: A dual fuel engine system includes an engine, and a fuel system including a pressurized fuel reservoir, a first fuel pump, and a plurality of second fuel pumps each having an actuating fluid inlet fluidly connected to at least one of the first fuel pump or the pressurized fuel reservoir. The plurality of second fuel pumps may intensify or de-intensify a pressure of a second fuel relative to a pressure of the first fuel used to actuate the second fuel pumps so as to obtain an increased flow rate of the second fuel. Related apparatus and methodology is also disclosed.

Abstract: An electronically controlled fuel injector includes an injection valve; a control valve fluidly connected between a pressurized fuel supply passage and a control chamber for controlling operation of the injection valve, the control valve movable between a non-injection position and an injection position; the injection valve configured to inject fuel with the control valve in the injection position; and a control member chamber including an orifice that fluidly connects the control member chamber with a low pressure return line of a fuel supply system. The control chamber is fluidly coupled with a pressure communication passage such that the control chamber is fluidly coupled with the low pressure return line through the orifice in the control member chamber when the control valve is in the injection position. The pressure communication passage includes a two-way, variable flow rate valve.

Abstract: Disclosed is a personal flying machine using compressed air as power source, and an operation method thereof, the flying machine including a stationary rotor lift device in a cyclone duct, a seat frame and a compressed air supply device; wherein the stationary rotor lift device in a cyclone duct includes a cyclone duct, in-duct stationary rotors and in-duct compressed air artificial wind blowing ports; wherein the in-duct stationary rotor includes a stationary propeller hub and a plurality of stationary blades fixed connected around the stationary propeller hub and arranged radially; wherein the stationary blade is shaped as an airplane's wing having an airfoil, an angle of attack, a leading edge and a trailing edge; wherein the compressed-air supply device supplies compressed air to the in-duct compressed-air artificial wind blowing ports to eject airflows towards the leading edges of the stationary blades and form a cyclone to generate lift.

Abstract: An electronically controlled fuel injector includes an injection valve; a control valve fluidly connected between a pressurized fuel supply passage and a control chamber for controlling operation of the injection valve, the control valve movable between a non-injection position and an injection position; the injection valve configured to inject fuel with the control valve in the injection position; and a control member chamber including an orifice that fluidly connects the control member chamber with a low pressure return line of a fuel supply system. The control chamber is fluidly coupled with a pressure communication passage such that the control chamber is fluidly coupled with the low pressure return line through the orifice in the control member chamber when the control valve is in the injection position. The pressure communication passage includes a two-way, variable flow rate valve.

Abstract: A fully variable electro-hydraulic valve system, comprising a sliding sleeve (A103, B103), a spiral shaft (A102, B102), a piston (A105, B105), and a reset spring (A104, B104). The sliding sleeve (A103, B103) is fixed relative to an engine; the piston (A105, B105) abuts against a valve assembly (106); the spiral shaft (A102, B102) is axially controlled by a cam surface of a camshaft (101); and the spiral shaft (A102, B102) is provided with a spiral groove (A102D, B102D) and a blockage part (A102G, B102G). When the spiral groove (A102D, B102D) communicates with a limiting oil hole (A118, B118), a sliding sleeve cavity (Q) communicates with a low-pressure oil path of the engine for pressure relief.

Abstract: A screw compressor comprises: a rotor set comprising male rotor and female rotor meshing with each other; a rotor housing; and a partition plate, fixed on the rotor housing and having a first annular section and a second annular section. The annular outer surface diameter of the first annular section is the same or substantially the same as the diameter of the circle formed by the male rotor teeth tips. The annular inner surface diameter of the first annular section is the same or substantially the same as the male rotor main shaft diameter. The annular outer surface diameter of the second annular section is the same or substantially the same as the diameter of the circle formed by the female rotor teeth tips. The annular inner surface diameter of the second annular section is the same or substantially the same as the female rotor main shaft diameter.

Abstract: Magnetic resonance imaging (MRI) systems and compositions thereof are provided. The MRI systems may include a main magnet configured to generate a primary magnetic field, the primary magnet forming a bore. The MRI system may include a gradient coil arranged in the bore and configured to generate a gradient magnetic field that provides a magnetic field environment with the main magnetic field. The gradient coil may include a shielding gradient coil including two or more coil units. One of the two or more coil units may be wound along a first coil path. Another one of the two or more coil units may be wound along a second coil path. The MRI system may also include a shimming structure arranged between the gradient coil and the primary magnet and configured to homogenize the main magnetic field.

Abstract: Embodiments of the present application provide a calibration method and device for dental implant navigation surgery, and a tracking method and device for dental implant navigation surgery. The calibration method comprises: (110) obtaining a position of a scanning area (304) relative to a second visual marker (306) based on a spatial position of a first visual marker (305) disposed on a scanning device (302), a spatial position of the second visual marker (306) disposed on a surgical area (303), and a scanning position of the scanning area (304) obtained by scanning with the scanning device (302); and (120) registering the position of the scanning area (304) relative to the second visual marker (306) with a three-dimensional scene to obtain a transformation matrix, and applying the transformation matrix to the tracking of a surgical instrument.

Abstract: A registration method and an electronic device for visual navigation in dental implant surgery, comprising obtaining a three-dimensional model of a target tooth to be registered, an entity model of the target tooth and a second model of the target tooth, obtaining a position and attitude matrix of the three-dimensional model in a virtual coordinate system according to the coordinates of at least three points on a three-dimensional model of a substrate after the registration of the three-dimensional model in the virtual coordinate system, mounting the entity model of the target tooth onto a registration standard board, obtaining a position and attitude matrix of the entity model in the visual coordinate system according to three optical marks and the points on the entity model corresponding to the three points, and obtaining a correspondence between the virtual coordinate system and the visual coordinate system according to two position and attitude matrices.

Abstract: Disclosed is a denture tray for visual marking and a manufacturing method thereof. The method comprises: establishing a three-dimensional model of a target dentition of a target patient; obtaining a three-dimensional model of a substrate of a denture tray based on the three-dimensional model of the target dentition; providing a through hole at a preset position on the three-dimensional model of the substrate of the denture tray; establishing a three-dimensional model of a fixed connection portion on an outer side surface of the three-dimensional model of the substrate of the denture tray to form a three-dimensional model of the denture tray, wherein the three-dimensional model of the fixed connection portion is integrally connected with the three-dimensional model of the substrate of the denture tray; and manufacturing the denture tray based on the three-dimensional model of the denture tray.

Abstract: A method includes selecting one of a first safety architecture and a second safety architecture of a protection system configured to monitor a protection system. The protection system includes an input base, a controller base and an output base. The selecting includes selecting one of a first voting logic associated with the first safety architecture and a second voting logic associated with the second architecture. The controller base is configured to execute the selected voting logic. The method also includes configuring the protection system including a plurality of processing channels to operate in one of a first configuration associated with the first safety architecture and a second configuration associated with the second safety architecture. The configuring includes altering the number of processing channels releasably coupled to the protection system and hardware relay output in the protection system.

Abstract: Systems and methods for rule optimization are disclosed. In accordance with aspects, a method may include providing a segment rule, where the segment rule uses a machine learning model score associated with a data record and a scaler value to evaluate data records and the segment rule is configured to evaluate data records categorized into a corresponding segment of the segment rule by attributes of the data records; receiving, at the segment rule, a categorized set of data records, wherein each data record in the categorized set of data records is categorized in the corresponding segment of the segment rule based on attributes of the data records; iteratively evaluating, by the segment rule, each received data record with a range of scaler values, where the iteratively evaluating produces a plurality of outputs of the segment rule; and determining an optimal output from the plurality of outputs.

Abstract: A fuel injector is disclosed. The fuel injector may have an injector body having a fuel inlet and at least one orifice. The fuel injector may also have a first check valve member. The first check valve member may be selectively movable to fluidly block a first flow of fuel from the fuel inlet to the at least one orifice. The fuel injector may have a second check valve member. The second check valve member may be selectively movable to fluidly block a second flow of fuel from the fuel inlet to the at least one orifice. The fuel injector may also have a control valve assembly. The control valve assembly may be configured to selectively operate either the first check valve or both the first check valve and the second check valve to fluidly connect the fuel inlet and the at least one orifice.

Abstract: Systems and methods for frequent machine learning model retraining and rule optimization are disclosed. In accordance with aspects, a method may include retrieving, from a data store, a plurality of datasets; generating a challenger machine learning model, wherein the challenger machine learning model is generated from a production machine learning model, and includes variables and variable weights included in the production machine learning model; training the challenger machine learning model with the plurality of datasets; adjusting the variable weights of the challenger machine learning model based on patterns in the plurality of datasets determined by the challenger machine learning model; performing a comparative analysis between the challenger model and the production model; and promoting the challenger model to a production environment based on the comparative analysis.

Abstract: Systems and methods for frequent machine learning model retraining and rule optimization are disclosed. In accordance with aspects, a method may include generating a challenger machine learning model based on a production machine learning model; training the challenger machine learning model on a plurality of datasets; scoring historical data with the challenger machine learning model, wherein the scoring produces a respective score for each record of a plurality of records in the historical data; determining that the challenger model performs within predetermined thresholds based on the scoring; selecting an optimal scaler value for a rule based on execution of the rule with a range of scaler values applied to the respective score for each record of the plurality of records evaluated by the rule; determining that the optimal scaler value outperforms a production scaler value; and promoting the challenger model and the optimal scaler value to a production environment.

Abstract: A fuel injector capable of injecting a plurality of different fuels in a single fuel injection event includes a body including a primary fuel path and a pilot fuel path and a first plunger in fluid communication with the pilot fuel path. The fuel injector also includes a second plunger in fluid communication with the primary fuel path and with the pilot fuel path, a hydraulic control chamber within the pilot fuel path, and an injection valve at which the primary fuel path and the pilot fuel path connect to each other.

Abstract: A fully variable electro-hydraulic valve system having a buffering function, comprising: a camshaft (101), a valve assembly (106), a sliding sleeve (103), a spiral shaft (102), a piston (105), and a position restoring spring (104). The sliding sleeve (103) is fixed relative to an engine, the piston (105) abuts against the valve assembly (106), and the spiral shaft (102) is controlled by a cam surface of the camshaft (101) in the axial direction. sliding sleeve (103) is provided with a buffering oil hole (123) that communicates with a buffering cavity (R) and with a low-pressure oil circuit of the engine by means of a throttling device (124). When a valve is going to be seated, the piston collides with a buffering ring (121), and due to the effect of the throttling device, engine oil within the buffering cavity has a damping effect on the movement of the buffering ring.