76results about How to "Protection overload" patented technology

To offer a fuel supply system and fuel supply method for direct injection engine that realizes higher output. In a fuel supply system for direct injection engine of the present invention, equipped with a primary fuel injector that injects fuel directly into the cylinder of the direct injection engine and supercharger that increase the intake air quantity of the engine, a secondary fuel injector is installed in addition to the primary fuel injector. In a specified engine load area, fuel is supplied using the primary fuel injector and secondary fuel injector. Even though the fuel quantity injected from the primary fuel injector into the cylinder is limited, the fuel supply system for direct injection engine constructed as above can increase the engine output because the fuel insufficiency can be supplied by the secondary fuel injector.

A method and apparatus for centrifuging. The apparatus comprises a centrifuge for centrifuging a slurry, comprising a bowl driven by a bowl drive motor, a screw conveyor driven by a screw conveyor drive motor, a pump driven by a pump motor, a bowl drive unit operatively arranged to drive the bowl drive motor, a conveyor drive unit operatively arranged to drive the screw conveyor drive motor, a pump drive unit operatively arranged to drive the pump drive motor, and, a general purpose first computer specially programmed to control the bowl drive unit to drive the bowl drive motor at a first constant speed and to control the screw conveyor drive unit to drive the screw conveyor drive motor at a second constant speed and to monitor the torques of the bowl drive motor and the screw conveyor drive motor, while simultaneously controlling the pump drive unit to variably control flow of the slurry through the centrifuge so as to drive one of the bowl drive motor or the screw conveyor motor at a pre-set operating torque.

An electrical interface device (10) for towing, operable to facilitate releasably coupling one or more electrical subsystems of a towing vehicle (12) and a towed vehicle, and including associated modular, removable circuitry (24). The circuitry (24) may provide overload, short-circuit, and reverse connection protection and power signal filtering. Alternative or additional circuitry may be added to support other functionality, including interfacing a brake control subsystem. Circular receptacle and flat plug connectors (20,22) are provided to accommodate without modification a variety of electrical connectors. Covers (32,33) are also provided to protect unused connectors from adverse environmental conditions.

A retaining member for holding and supporting an elongated element from a support includes a base portion and a holding portion. The base portion is attachable to the support. The holding portion is connected to the base portion and has a recess for holding the elongated element therein. The recess includes a tubular portion and a plurality of spaced ribs extending radially inwardly from the tubular portion to have different radial heights.

An optoelectronic arrangement for the detection of relative movements or relative positions of two objects, with the arrangement comprising at least four optoelectronic elements, characterised in that the optoelectronic elements are arranged in at least one first plane and in a second plane different from the first one in such a manner that at least three optoelectronic elements are arranged in the first plane and at least one optoelectronic element is arranged in the second plane. Further, a force and/or moment sensor provided with this arrangement with a first board and a second board, with the first board and the second board being elastically connected with each other and movable relative to one another. Finally, a personal computer keyboard which is provided with such a force and/or moment sensor.

The invention relates to a drive train having a twin-clutch transmission and to a method for controlling the same.

The invention provides a dynamic positioning vessel thruster load limit method based on on-line available power. The method includes computing available power of on-line generator sets in subareas and real-time load power of thrusters by real-time inspection of subarea situations of a distribution board of a dynamic positioning vessel electric propulsion system, then filtering by a digital filter so as to compute a load limit factor of each thruster and a power upper limit value that given thrust of each thruster must satisfy in next control cycle, and finally converting the power upper limit value to a given rotating speed and torque upper limit value of each thruster so as to prevent power failure of the whole vessel caused by overload of the thrusters and the electric propulsion system. Output of a dynamic positioning controller is limited by the aid of the available power of a power station and real-time power of the propulsion system according to optimized load limit coefficient, so that operation safety is improved, power failure of the whole vessel caused by the fact that motors are started untimely due to overload of the thrusters is reduced, and defects of a power station management system are overcome.

The invention provides a plug (100) which is adapted to be connected to a cable, such as an Ethernet cable, the plug (100) having a generally rectangular cross section and being dimensioned and arranged to be received by an aperture in a socket. On opposite lateral faces of the plug a region, or layer, of conductive material (24, 26) is provided for the transmission of electrical current to/from the cable. Use of the invention therefore permits cabling that has conventionally been used to supply data to also supply power, typically in excess of 200 Watts or so. Such amounts of power are sufficient for operating most equipment that also requires a data connection.

In an overload protective apparatus of a compressor and its method capable of preventing damage of a compressor due to overload by removing an overload protector and using an operation control device operating the compressor, the overload protective apparatus includes a reference current setting unit for presetting a reference current value for operating the compressor normally; a microcomputer for generating a power cutoff signal when the detected current value is greater than the reference current value and generating a power supply signal when the detected current value is smaller than the reference current value; and a power supply unit for cutting off power applied to the compressor on the basis of the power cutoff signal or applying power to the compressor on the basis of the power supply signal.

A weighing module 1 has a force-transmitting linkage 13 arranged between the load-receiving portion 3 of the weighing cell 2 and the load receiver 5, with an overload protection device that precisely maintains its position being an integral part of the force-transmitting linkage 13. By means of a positioning element 7, 107, 207, the load receiver 5 is positioned without play relative to the load-receiving portion 3 in the plane that extends orthogonal to the load direction, and the load receiver 5 is also guided in the load direction without play. When forces in excess of the pre-tension force of the elastic element 8 act on the load receiver 5, the latter has the capability of being displaced in the load direction and to tip in all directions that are orthogonal to the load direction. The housing part 18 serves to delimit at least the range of linear downward deflection as well the tipping movement of the load receiver 5 when the load receiver 5 is exposed to transverse forces and to overloads. The rotation constraint 20 is rigidly connected to the load receiver 5 and engages a housing-connected recess 21. To position the load receiver 5 relative to its operating environment, a positioning device 16 is provided, whose central longitudinal axis coincides with the central longitudinal axis of the load receiver 5.

The invention provides a coupler with an overload protection function, which is characterized in that a driving friction disk is arranged at one end of a driving shaft by a driving shaft key so as to ensure that the driving friction disk has degree of freedom (DOF) for sliding along the axial direction and non-rotational DOF; and a pressure spring is arranged between a step A and the driving friction disk, and a driven friction disk and a driven shaft form a fixed connection by a driven shaft key so as to ensure that concentric rounded V-shaped grooves on the driving friction disk and the driven friction disk form a concavo-convex cooperation relationship.

A device for torque vectoring in a wheeled vehicle is presented. The device includes a differential mechanism arranged on an axle having a first drive shaft and a second drive shaft, an electrical power source connected to an electrical motor, the electrical motor being connectable to the axle for torque vectoring between the first drive shaft and the second drive shaft, and control means connected to the power source and configured to receive a plurality of variables representing the current vehicle state and to determine drive currents being dependent on the variables, wherein the drive currents are supplied to the electrical motor from the power source for introducing a torque increase to either one of the first or second drive shafts and a corresponding torque decrease to the other one of the first or second drive shafts.

Systems, apparatuses and methods for preventing requests to access a system's resources from having a negative impact on higher priority data processing operations being performed by the system. The invention is directed to preventing the number of calls made by a merchant's applications through an application programming interface (API) for access to the lower priority services of a merchant service provider from having a negative impact on the ability of the service provider to perform the processing necessary to support higher priority services. The invention provides a user interface that may be used by a merchant or the service provider to configure the operation of a “throttle” that is designed to generate an alert when the number of calls by a merchant application for access to a specific service provider function or application exceeds a value or limit, where exceeding the value or limit may indicate a malfunction of the merchant's application or an attack by a malicious agent.

A variable frequency speed control branch circuit control device of a high-frequency vibrating motor relates to a building implement. The prior variable frequency speed control branch circuit controldevice of the high-frequency vibrating motor usually adopts alternating-current relay auxiliary contacts in series connection to realize interlocking, wiring is troublesome, faults easily appear, andoverhauling is inconvenient; on the other hand, a triple-pole breaker is used for protecting the motor and the cost is high. Each branch circuit control cabinet is provided with an interlocking control circuit which comprises a testing circuit optionally in two-phase connection with the output end of a frequency converter, a make-and-break control circuit connected with the testing circuit, and aself-locking circuit connected with the make-and-break control circuit in parallel. The branch circuit control cabinet is provided with an alternating-current contactor, the make-and-break control circuit is connected with the coil of the alternating-current contactor in series, the self-locking circuit is provided with the normally open contact of the alternating-current contactor, and a dipolarbreaker is used for protecting the motor. The invention avoids the condition that two branch circuit control cabinets run synchronously, protects the frequency converter and reduces production cost, circuitry is simple, and maintenance is convenient.

A tool ratchet for tightening and loosening screws and/or nuts and the like, has a handle and a receiving piece operatively connected with handle via a ratchet mechanism, and with an electric motor, with which torque is transferrable to the receiving piece via a non-positive connection, and a coupling for disconnecting the non-positive connection.

A method for determining the efficiency of an electric energy system of a hybrid vehicle includes determining a measure representative of a relation between the electrical, brake energy and the mechanical brake energy, by determining a requested brake energy for a first vehicle retardation, and by determining an actual electrical brake energy and the actual mechanical brake energy during the vehicle retardation, determining a new measure representative of a relation between the electrical brake energy and the mechanical brake energy at a subsequent second similar vehicle retardation, comparing the determined measures representative of a relation between the electrical brake energy and the mechanical brake energy of the first and second vehicle retardations, where the actual efficiency of the energy system is obtained from the change in the measure representative of a relation between the electrical brake energy and the mechanical brake energy of the first and second vehicle retardations.

Disclosed is a connecting package for a refrigerator compressor. The connecting package includes a base including an overload protector mounting section and a motor starter relay element mounting section and having first to third pin connecting ports connected to a compressor motor through a circular terminal of a compressor body, a cover detachably coupled to an upper portion of the base, including a dome-shaped overload protector mounting section and a dome-shaped motor starter relay element mounting section corresponding to the overload protector mounting section and the motor starter relay element mounting section of the base, and having a plurality of slots for connecting terminals formed around the dome-shaped overload protector mounting section and the dome-shaped motor starter relay element mounting section, a motor starter relay element mounted on the motor starter relay element mounting sections of the base and the cover and having first and second pin connectors positioned corresponding to the first and second pin connecting ports of the base, and a low-power overload protector mounted on the overload protector mounting sections of the base and the cover and having a first connecting terminal connected to a pin connector positioned corresponding to the third pin connecting port of the base, a second connecting terminal connected to a quick connector connected to an external power source, and a heating element for shortening a reaction time of the low-power overload protector.

For controlling a multi-stage load with pulsewidth modulation (PWM), the individual stages have normally separately applied thereto load currents which are clocked in a phase-shifted mode so as to avoid load peaks. An output stage for PWM control of a load stage with a delay circuit which, in addition to the load current modulated by a PWM input signal, supplies a PWM output signal that is delayed by a predetermined fraction of the period duration relative to the PWM input signal. The output stage can especially be realized by integrating the delay circuit together with the actual power semiconductor switch and an associated monitoring and control circuit in a single component. By cascading such output stages, a controller for phase-shifted PWM control of multi-stage loads, which is independent of a precise time base, can be realized in a simple manner.