Abstract: The present invention relates to the technical field of catalyst preparation, disclosing a preparation method and application of a coated vanadium-tungsten-titanium oxide monolithic SCR catalyst. The method includes the steps of mixing a vanadium oxide precursor, a tungsten oxide precursor, titanium dioxide, an inorganic adhesive, an organic adhesive and a macromolecular surfactant with deionized water and stirring them to obtain a thick liquid; adding a pH adjuster to the thick liquid to make its pH 1.5-4.5; impregnating a cordierite honeycomb carrier in the thick liquid to obtain a preliminarily-impregnated catalyst and dried and calcined the preliminarily-impregnated catalyst to obtain a finished catalyst. The method has advantages such as simple operation, easy repetition and short time-consuming, so it can be applied to exhaust gas post-treatment of a marine diesel engine, and provide a good choice for catalysts used to denitrify medium and high temperature exhausted gas from marine engines.

Abstract: An actuator assembly includes a housing having a central axis, a motor compartment on one end defined about the central axis, a gear compartment on the other end. An electronic rotational position sensor is fixed relative to the housing proximate the motor compartment. A motor assembly is disposed in the motor compartment and has a hollow input shaft extending along the central axis into the gear compartment. An output shaft extends along the central axis and has a lower end extending out of the gear compartment and an upper end extending freely through the hollow input shaft to a point proximate to the electronic rotational position sensor. A gear assembly is supported within the gear compartment for translating rotation of the input shaft to the output shaft. A sensed object is disposed on the upper end of the output shaft opposed to the speed sensor.

Abstract: An electronic multi-lane stop watch is disclosed. Said multi-lane stop watch can record multi-athletes' split times and final times simultaneously. Said multi-lane stop watch can also automatically save collected data to files and export/import information and data to/from external devices such as computers or printers.

Abstract: A modular actuator assembly is provided which is adapted to accommodate a predetermined range of gear ratios. The modular actuator assembly includes a standard housing having a central axis, a motor compartment on one end defined about the central axis and a generally cylindrical, coaxial gear compartment on the other end with a fixed diameter. A drive motor is disposed in the motor compartment and has an input shaft extending along the central axis into the gear compartment. An output shaft extends along the central axis and out of the gear compartment and is supported for free, coaxial rotation within the gear compartment. A gear assembly includes predetermined radial design clearances that are sufficiently large to allow gears of differing diameters to be included to allow the predetermined range of gear ratios to be accommodated with the standard housing.

Abstract: An actuator assembly includes a housing having a central axis, a motor compartment on one end defined about the central axis, a gear compartment on the other end. An electronic rotational position sensor is fixed relative to the housing proximate the motor compartment. A motor assembly is disposed in the motor compartment and has a hollow input shaft extending along the central axis into the gear compartment. An output shaft extends along the central axis and has a lower end extending out of the gear compartment and an upper end extending freely through the hollow input shaft to a point proximate to the electronic rotational position sensor. A gear assembly is supported within the gear compartment for translating rotation of the input shaft to the output shaft. A sensed object is disposed on the upper end of the output shaft opposed to the speed sensor.

Abstract: An electronic multi-lane stop watch is disclosed. Said multi-lane stop watch can record multi-athletes' split times and final times simultaneously. Said multi-lane stop watch can also automatically save collected data to files and export/import information and data to/from external devices such as computers or printers.

Abstract: A fuel level sensor assembly includes a magnetic sensor for sensing a magnetic field corresponding to fuel level. The magnetic sensor includes a magnetic sensing element packaged within a hermetically sealed non-magnetic metal case. The magnetic sensing element may be a Hall effect, giant magnetoresistive (GMR), or anisotropic magnetoresistive (AMR) sensor. The case may correspond to the dimensions of a standard transistor outline (TO) package such as TO-3, TO-5, TO-8, TO-18, TO-39, TO-46, TO-52, or TO-72.

Abstract: A transmission clutch position sensor includes two Hall sensors located at opposite ends of a flux concentrator outside the casing of the transmission to sense a magnetic field generated by a magnet attached to the clutch piston. To reduce sensitivity to magnet-to-sensor gap tolerances, a ratio of the voltage of one Hall sensor to the sum of the voltages from both Hall sensors is used to correlate to the piston and, hence, clutch position.

Abstract: The present invention relates to a pace clock and system for timing repetitive exercise, and more particularly to a pace clock and system for interval based training such as swim training to allow the swimmer predetermined periods of time to rest and recover after each individual swim within a particular set. A pace clock according to the present invention can display time in minutes and seconds; it can also display at least one additional digit which indicates the swim repeat number and/or cycle repeat number. The pace clock having a processing center, such as a micro-controller, to receive operation commands and workout plan from the master controller, such as computer and handheld device, through the transceiver. The master controller connecting with multiple pace clocks through RF or wired transceiver enables the coach to know the current status of the workout from multiple swimmers having their own workout plan.

Abstract: A transmission clutch position sensor includes two Hall sensors located at opposite ends of a flux concentrator outside the casing of the transmission to sense a magnetic field generated by a magnet attached to the clutch piston. To reduce sensitivity to magnet-to-sensor gap tolerances, a ratio of the voltage of one Hall sensor to the sum of the voltages from both Hall sensors is used to correlate to the piston and, hence, clutch position.

Abstract: A valve actuator includes a motor coupled to an output shaft that in turn can be coupled to valve elements in a vehicle air passage to move the elements. A position sensing component is provided to produce feedback of actuator motion, and limits of actuator travel for any particular application can be learned in a learning mode and subsequently used in an operating mode to satisfy commands of an engine control module (ECM).

Abstract: System and methods for determining a concentration of urea in an aqueous solution disposed in a container are provided. The system includes an infrared light source and an infrared light detector. The system further includes a window disposed proximate to an aperture of the container, such that the infrared light at a first light intensity level from the infrared light source passes through a first portion of the window toward the aqueous solution. A portion of the infrared light is absorbed by the aqueous solution, and a second portion of the infrared light is reflected from the aqueous solution and through a second portion of the window. The infrared light detector system generates a first signal indicative of a second light intensity level based on the second portion of infrared light. The system further includes a microprocessor that determines the second light intensity level based on the first signal, and further determines a urea concentration based on the first and second light intensity levels.

Abstract: A level of fluid in a container is determined as is a capacitance associated with the fluid. The capacitance and level are used to determine a concentration of ethanol in the fluid.

Abstract: A sensor circuit is coupled to a sensing element for determining a property, such as a dielectric constant, of a fuel. The circuit includes an excitation voltage signal generator, a synchronization trigger and a processing circuit configured to generate an output signal indicative of the fuel property. The excitation signal is applied to the sensing element to produce an induced current signal. The synchronization trigger generates a trigger signal when the excitation signal crosses zero volts, at which time the real (resistive) component of the induced current signal is zero. The induced signal is therefore wholly representative of the imaginary component attributable to a capacitance of the fuel, which in turn is dependent on the dielectric constant (and thus ethanol concentration) of the fuel blend. The processing circuit is configured to sample the induced signal in response to the trigger signal and produce the output signal.

Abstract: A total capacitance is measured between an inner electrode disposed in a dielectric sleeve and an outer electrode surrounding the sleeve, with a fluid chamber being established between the sleeve and outer electrode. The total capacitance is correlated to a level (l) of fluid in the chamber using an electrode length, a unit length capacitance associated with the sleeve, and a unit length capacitance associated with the fluid chamber when no fluid is in the chamber.

Abstract: A fuel sensor includes a cylindrical, one-piece plastic body that has an inlet, an outlet and a fuel passage in between. The body further includes three sensing, thin-walled plate holders that extend from the cylindrical body into and across the fuel passage. Three parallel sensing plates are disposed in the holders for use in forming a pair of parallel plate devices. The thin-walled plate holders surrounding the plates provide isolation of the plates from contact with the fuel. The body also includes a cavity to house a printed circuit board (PCB), which includes signal processing circuitry. The PCB is also isolated from exposure to the fuel. The sensing plates have leads that extend into the cavity for connection to the PCB. An interface connector for connection to an engine controller is also provided. The sensor achieves isolation from exposure to fuel without the use of any coatings.

Abstract: Systems and methods for determining a concentration of biodiesel in a mixture of biodiesel and petrodiesel are provided. In one exemplary embodiment, a method includes receiving an oscillatory signal at an inductance-capacitance-resistance circuit. The circuit has a sensing element fluidly communicating with the mixture of biodiesel and petrodiesel. The method further includes generating a resonant current at a resonant frequency utilizing the circuit in response to the oscillatory signal. The method further includes determining a concentration value indicating the concentration of the biodiesel in the mixture based on an amplitude of the resonant current and/or the resonant frequency, utilizing a microprocessor. The method further includes storing the concentration value in a memory device, utilizing the microprocessor.

Abstract: Systems and methods for determining a total acid number associated with biodiesel in a mixture of biodiesel and petrodiesel are provided. The method includes receiving an oscillatory signal at an inductance-capacitance-resistance circuit. The circuit has a sensing element fluidly communicating with the mixture of biodiesel and petrodiese. The method further includes generating a resonant current at a resonant frequency utilizing the circuit in response to the oscillatory signal. The method further includes determining a dielectric constant value indicating a dielectric constant associated with the biodiesel in the mixture based on the resonant frequency of the resonant current, utilizing a microprocessor. The method further includes determining a concentration value indicating a concentration of the biodiesel in the mixture based on an amplitude of the resonant current and the dielectric constant value, utilizing the microprocessor.

Abstract: A viscosity sensor for, e.g., outputting a signal representing the viscosity of engine oil has one or more piezoelectric diaphragms disposed in a fluid chamber of a housing. An elongated amplification channel is formed in the housing and extends away from the chamber. The diaphragm can be excited to induce fluid movement that in turn induces the diaphragm to output a sensor signal representative of the viscosity of the fluid.

Abstract: A non-contacting, magnet-based, rotary and linear travel absolute position sensor each include a stationary galvanomagnetic sensing element disposed in an air gap or slot of a movable magnet/flux concentrator assembly. The assembly has a first flux concentrator comprising ferromagnetic material having opposing magnet ends, and a second flux concentrator also comprising ferromagnetic material having opposing magnet ends but that is spaced apart from the first flux concentrator by a pair of magnets to form the air gap or slot. The magnet ends of each flux concentrator have a respective magnet area configured to engage a corresponding magnet and is configured in size and shape to cover the magnet. Additionally, the flux concentrators are configured in geometry to decrease in cross-sectional area from the inboard side of the magnet ends towards the center region of the concentrators, specifically the center of travel together provide improved linearity and signal to noise ratio of the output position signal.