Abstract: A magnetic flow sensor using a permanent magnet to provide the magnetic flux is configured to compensate for electrode related drifts. The electrode signals are cyclically short circuited and the flow rate related voltages are isolated from various drift signals during short signal sampling periods. Some versions of the invention use multiple sensing heads in a single sensor to increase the magnitude of the flow related signal.

Abstract: A precision flowmeter is adapted to measure at least one of mass flow rate and flow velocity of a fluid, at steady or transient state, in a bi-directional low-velocity flow system. The flowmeter includes pressure taps and static pressure taps, passing from the interior of a tubular main body and through a wall of the tubular main body, and a plurality of impact tubes located circumferentially spaced-apart and extending axially parallel through a conical wall of the tubular main body toward a center of the cylindrical throat portion. The pressure taps correspond in number to the plurality of impact tubes and communicate with inner ends of the corresponding plurality of impact tubes, and static pressure taps pass through walls of the upstream and downstream tubular channel sections and through the tubular throat portion. A method for measuring at least one of flow rate and flow velocity of a fluid is also disclosed.

Abstract: A mass flowmeter for measuring the flow of fluids, operating by the Coriolis principle and designed for mounting on a fluid-carrying, preferably straight pipe, with at least one detector capable of measuring Coriolis forces and/or Coriolis-force-induced oscillations of the pipe, and with a bridge. The detector is attached to the bridge and the bridge is mountable on the pipe. The mass flowmeter is compact and can be mounted on existing pipes of a conduit system due to a design that permits radial attachment of the bridge on the pipe.

Abstract: A torque indicating wrench has a resilient beam with a handle end and a work-engaging end carrying a ratchet mechanism. The resilient beam is generally channel-shaped in transverse cross section and is tapered in thickness from the work-engaging end to the handle end. A reference beam is disposed in the channel and has first and second ends respectively pivotally coupled to the work-engaging and handle ends of the resilient beam. The reference beam has openings adjacent to its first and second ends to facilitate pivotal coupling to the resilient beam while substantially eliminating non-pivotal relative movement in use. A handle housing encloses the beams along substantially their entire lengths and is fixed to the resilient beam only adjacent to its handle end.

Abstract: A non-intrusive pressure sensor and method for measuring pressures within a pipe includes a displacement based sensor disposed on a surface of the pipe. The displacement based sensor measures the radial displacement response of the surface of the pipe to the unsteady pressure. The displacement based sensor may comprise an accelerometer, an absolute velocity sensor, or an absolute displacement sensor. One or more of sensors may be axially distributed along the pipe or alternatively the sensors may be circumferentially distributed about the pipe.

Abstract: A wireless tire inflation pressure measurement device is used to obtain inflation pressure information for a tire of a vehicle and a signal therefrom may be used for determining the location of the tire. An identifier may be associated with the inflation pressure information for each wheel of the vehicle. Tire rotation speed may be determined by amplitude fluctuations of a radio frequency carrier from a radio frequency transmitter rotating with the wheel. Differences in wheel rotation speeds during a turn may be used in determining the location of each tire of the vehicle. An antenna may be placed on each wheel toward the outer perimeter of the wheel and connected to the radio frequency transmitter. A radio frequency identification (RFID) tag and pressure sensor may be used as the wireless tire inflation pressure measurement device and a RFID pickup coil may be provided in each wheel well for pickup of the inflation pressure signals from each RFID tag on a wheel.

Abstract: A method for determining internal pressure in the cylinders of an internal combustion engine by measuring and analyzing structure borne noise signals using a neural network.

Abstract: An ultrasonic flow measuring method that includes selecting a section area in a right angle to an ultrasonic transit trajectory line for measuring a flow velocity as a section area necessary for a flow measurement; and multiplying a flow velocity component of a direction corresponding to an ultrasonic transit trajectory, which is directly measured by an ultrasonic wave, by the section area thereby to compute a flow or flowrate, so that a flow measuring error and a measuring error of a section area can be significantly reduced, thereby enhancing the accuracy of the flow measurement. The apparatus having a plurality of paired transducers disposed within the pipe at opposing sides; a mechanism for measuring a flow velocity of the fluid for each of a plurality of chords dividing the section area; and a mechanism for determining the flow of the fluid based on a product of the average flow velocity of the fluid and a flow computing area.

Abstract: A governor comprising an output setting means for setting an output value for an engine, an output adjusting means for adjusting an engine output based on a value set by the output setting means, and a load detecting means. The load detecting means is provided in a transmission system for driving a vehicle for detecting an amount of load torque generated through rotational resistance applied on the axles that is transmitted from the axles to the engine through the transmission system.

Abstract: A flow sensor component consists of a diaphragm of monocrystalline silicon, the diaphragm having arranged therein filled slots which are filled with a thermally insulating material and which penetrate the diaphragm from a first main surface to a second main surface thereof. The filled slots defining at least one heating area of the diaphragm provided with at least one heating element and at least one detection area of the diaphragm provided with at least one temperature detection element, the filled slots thermally insulating the heating area and the detection area from one another and surrounding the heating area and the detection area completely.

Abstract: A number of embodiments of direct injected V-type outboard motors provided with a very effective fuel supply system wherein the number of components can be significantly reduced as well as the elimination of many of the flexible conduits normally employed. This also permits the fuel system to be assembled as a relatively unitary assembly that can be then affixed to the engine. The arrangement is such that purging of the system from vapors during shutdowns is easily accomplished and the system can be purged without complicated construction. Furthermore, the system can be pressure tested by an arrangement where the low pressure system can bypass the high pressure system when the engine is not operating so as to be pressurized for testing purposes. However, when the high pressure system operates, then the bypass line will be closed by the shunting valve arrangement.

Abstract: A pressurizing chamber 1 is formed as a recess by half etching of a silicon single-crystal substrate 2. A nozzle communicating hole 6 through which the pressurizing chamber 1 is connected to a nozzle opening 5 is formed as a through hole which is smaller in width than the pressurizing chamber 1. The pressurizing chamber 1 is connected to the nozzle opening 5 in the other face via the nozzle communicating hole 6 while reducing the volume of the pressurizing chamber 1 to a degree as small as possible. The silicon single-crystal substrate is used as a member constituting a spacer so that an ink drop of a reduced ink amount suitable for high density printing flies with high positioning accuracy.

Abstract: The subject matter of the invention is a rolldynamometer for motor vehicles comprising at least one running roll or drum (9) for one wheel (2) of one axis of the vehicle (1) to be examined, respectively, at least one electric motor (9) for directly driving and slowing down the running rolls (3), the stator housing (9a) of said electric motor (9) being borne in a support frame (6) in a pendulum fashion and supported on said support frame via force meters (20), and a control unit to which a running simulator for adjusting specific vehicle data and for simulating selected running conditions is allocated. For increasing the accuracy of the measurements, according to the invention, the stator housing (9a) of the driving motor (9) is borne in a lubrication oil free bearing arrangement in the support frame (6).

Abstract: An ultrasonic transit time flow sensor detects a signal corresponding to the phase difference between signals from two transducers during the interval of an acoustic transmission, and uses this signal to adjust an output flow rate signal in order to compensate for circuit errors inherent in the flow sensor. An Exclusive-Or phase detector detects the difference in phase between the signals resulting from the difference in propagation transit time of the flowing fluid. This measured difference includes a phase shift due to the electrical circuits of the flow sensor. In order to compensate for the circuit-induced phase shift, when the transducers are transmitting bursts of acoustic energy, the corresponding electrical signals are routed to the Exclusive-Or phase detector in order to generate a common mode DC signal representative only of the phase shift of the electrical circuits of the flow sensor.

Abstract: By employing command value signals for controlling the opening timing of an exhaust valve or an intake valve and means for measuring flow rates of an intake air of a flow direction which flows through an intake manifold of an internal combustion engine, an air flow rate corresponding to the command value signal is measured. A valve mechanism includes the intake valve and the exhaust valve for each cylinder of the internal combustion engine and is controlled by a valve control means for controlling the valve mechanism. A failure diagnosis of an operating status of the valve mechanism can be performed.

Abstract: A pressure sensor 1—1 comprises a housing 10 having a pressure introduction hole 12, a sensor element 20 having semiconductor elements 22 with piezoresist effects, a holder 30 for fixing the sensor element 20, and a pressure case 60 having electromagnetic shield effect. The sensor element 20, holder 20 and pressure case 60 are welded airtightly so as to form a pressure sensor body formed with a reference pressure space. The pressure sensor body is retained in an electrically insulated manner in the housing 10.

Abstract: Pressurized oil is charged into a hydraulic chamber (12) formed within a slide (3) of a mechanical press (1). relationship between a working force (F) during a press working and a pressure (P) of the pressurized oil is preliminarily measured for every predetermined initial pressure of the pressurized oil. A computer (33) stores the measured results as a plurality of pressurizing characteristics (A1), (A2) and (A3). The computer (33) stores through a pressure sensor (27), a pressure of the pressurized oil while a press working is not performed, as a preload pressure (Pa1). And it stores a maximum pressure of the pressurized oil during the press working as a peak pressure (Pb1). It further selects a pressurizing characteristic (A1) corresponding to the preload pressure (Pa1) from among the plurality of pressurizing characteristics and thereafter calculates a working force (F1) based on the selected pressurizing characteristic (A1) and the peak pressure (Pb1).

Abstract: Gas flow sensor 10 generally comprises housing 20 defining internal cavity 40, diaphragm assembly 50 separating internal cavity 40 into first chamber 42 in communication with gas inlet 44 and second chamber 46 in communication with gas outlet 49 and having orifices 66 therethrough for passage of gas, valve 70 mounted on diaphragm assembly 50 for closing and opening orifices 66; and a sensing unit 80 sensing when diaphragm assembly 50 has moved at least to a predetermined location. Incoming gas moves diaphragm assembly such that valve 70 is pressed against wall 47 of second chamber 46 whereby valve 70 is opened and gas passes through orifices 66 and out gas outlet 49.

Abstract: A hybrid electric vehicle is placed in a running condition on a chassis dynamometer, a vehicle-end data is acquired by access to sensors in the vehicle, a dynanometer-end data is acquired by measurements at the chassis dynamometer, and the vehicle-end data and the dynamometer-end data are analyzed for inspections of drive and control systems of the vehicle.

Abstract: A flow meter includes a flow sensor for conducting fluid in a measuring direction and an opposite measuring direction, alternatively. Evaluation electronics coupled to the flow sensor generate a sensor signal corresponding to the flow rate of the fluid. A first subcircuit converts the sensor signal to a flow rate signal and a second subcircuit coupled to the first subcircuit generates an output signal representing the flow rate in the measuring direction. A third subcircuit fed by the flow rate signal delivers a control signal for controlling the generation of the output signal. The third subcircuit determines a flow when the fluid flows in the measuring direction and a counterflow when the fluid flows in the opposite direction, and calculates a balanced flow therefrom. Depending on the balanced flow, the third subcircuit controls the second subcircuit with the control signal to generate the output signal in a predetermined manner.