454results about How to "Improve startup performance" patented technology

The ability of an ultrasonic system to sweep and lock onto a resonance frequency of a blade subjected to a heavy load at startup is improved by applying a high drive voltage or a high drive current while systematically increasing the level of the applied signal. Increasing the drive signal to the hand piece results in an improved and more pronounced “impedance spectrum.” That is, under load, the increased drive signal causes the maximum phase margin to become higher and the minimum/maximum impedance magnitude to become more pronounced. Increasing the excitation drive signal to the hand piece/blade at startup significantly alleviates the limiting factors associated with ultrasonic generators, which results in an increase of the maximum load capability at startup.

A fluid machine has a scroll type expansion device which is operated by a high temperature high pressure refrigerant. The refrigerant is heated by use of waste heat from an engine for a vehicle. The fluid machine further has a motor generator for generating electric power when it is driven by a rotational force produced at the expansion device, wherein a rotating shaft of the motor generator is coupled to a movable scroll of the expansion device via a crank mechanism. A biasing member is provided for biasing the crank mechanism in a direction that the movable scroll wrap is separated from a contact in a circumferential direction with a fixed scroll wrap. Pressure of the refrigerant in a working chamber in the center portion is thereby equalized to the pressure in the outer peripheral portion, at a startup period of the expansion mode.

A stop method for a fuel cell system that includes a fuel cell unit in which hydrogen is supplied to an anode, and air is supplied to a cathode so as to generate electrical power via an electrochemical reaction. The stop method includes the steps of stopping supply of hydrogen to the anode, and supplying air to the anode so as to discharge water remaining at the anode.

A snowmobile (20) having an engine (34) with an air charging system (70). The air charging system (70) is connected to an intercooler assembly (57), which includes a heat exchanger (56) mounted adjacent to an intercooler opening (48) in the track tunnel (36). A snow retention area (54) is located above the heat exchanger (56) allowing for snow/ice to be thrown from a snowmobile drive track (38) and build up on top of the heat exchanger (56), allowing the snow/ice to absorb heat from intercooler assembly (57).

An emergency power supply starting system a lithium battery with automatic preheating function, including a lithium battery pack, an output control module, an output module, a working power supply control module, a CPU master control module, an operation panel display function module, a heater control module, a heater module, an information sampling module and a charging module is disclosed. The CPU master control module, monitoring the real-time temperature, residual capacity and user operation status of the lithium battery pack, cuts off all output functions and charges the lithium battery (power supply is resumed only after charging) if the battery voltage is too low; if the voltage is normal but battery temperature is too low, the heater control module will start the heater module to initiate the heating process driven with the low current from the lithium battery and the latter is ready for use after the lithium battery temperature returns to normal. The invention arranges a heating source for heating the lithium battery the invention to realize automatic heating for the lithium battery and therefore, normal usage is possible in low temperature condition.

A high frequency power source configured to provide a variable voltage output is described such as for use in welding systems. The high frequency power source charges a capacitive storage device. A transformer having a primary winding coupled to the output of the high frequency power source and establishing a resonant frequency signal with the capacitive storage device, and a secondary winding coupled to the welding power supply, superimposes the resonant frequency signals onto the welding power signal of the welding power supply during periods of the resonant rings. By varying the voltage output from the high frequency power source, the high frequency energy delivered to the welding torch can be optimized for a variety of welding applications.

The invention relates to the field of air conditioner control, in particular to an electric heating structure and an air conditioner compressor starting system and method. The electric heating structure comprises an electric heating control system and an electric heating device. The electric heating control system comprises a driving circuit and an electronic switch circuit. The driving circuit is used for adjusting the duty ratio of the electronic switch circuit. The electronic switch circuit is used for adjusting the output power of the electric heating device according to the duty ratio. The electric heating device is used for preheating an air conditioner compressor. According to the technical scheme, the output power of the electric heating device can be adjusted according to the exhaust temperature of the compressor; compared with the method that preheating is conducted by adopting a constant-power electric heating device in the prior art, the heating speed of the compressor is high, and the preheating process safety can be ensured; and accordingly, the starting waiting time of an air conditioner compressor system under a low-temperature environment is reduced, energy consumption is reduced, and meanwhile, the user experience effect is improved.

The invention provides single-phase winding structures used for axial magnetic field motors and a coiling method thereof, a printed circuit board and a motor. The windings are arranged on 2N layers of PCB. The windings arranged on all layers of PCB except for the first layer of PCB are provided with winding cycle rings of which the number is the same with that of motor magnetic poles. The adjacent winding layers are serially connected via connecting holes arranged at the central parts of the winding cycles. The head end and the tail end of the winding end parts are arranged on the first layer of PCB. Cost of the windings is relatively low; the motor coefficient of the windings is relatively high; and the windings are realized through the mode of the PCB so that the shape of the 2D windings can be arbitrary, and the size and the thickness of the windings can be accurately controlled. The aforementioned is important for realization of the thin motor structure and enhancement of motor performance; and the lines of a motor driving circuit, a Hall sensor circuit and other electronic devices can be manufactured on the same PCB forming the motor windings so that utilization rate of motor space can be enhanced.

A method for controlling a vehicle launch using a transmission having an input, a current gear, an input clutch associated with a target gear and an output, an engine and an electric machine for driving the input, includes the steps of using the engine and the first electric machine to drive the transmission input at a desired magnitude of torque, determining a desired magnitude of torque capacity of the input clutch, determining a crankshaft speed error, determining a magnitude of a change in torque capacity of the input clutch that will reduce the crankshaft speed error, and increasing the torque capacity of the input clutch to a desired torque capacity whose magnitude is determined by adding the current magnitude of torque capacity of the input clutch and said change in torque capacity of the input clutch.

A system for method for emptying a gas storage tank of a vehicle is presented. In one example, engine valve timing is adjusted to facilitate reducing pressure within the gas storage tank. The system and method may extend the use of the gas stored in the gas storage tank.

The invention relates to a frequency-conversion pump controlled steering hydraulic system for a loader, wherein an alternating-current motor driven constant delivery pump is used as a main oil supply source, an energy accumulator is used as an auxiliary oil supply source. At the initial steering stage of the loader, the energy accumulator supplies oil to a steering hydraulic cylinder independently; after an alternating-current motor is started, the alternating-current motor driven constant delivery pump supplies oil to the steering hydraulic cylinder independently; through the mode, the response speed of a steering system is increased, and the energy consumption is saved at the same time; and after the loader is started, if the pressure in the energy accumulator is lower, the alternating-current motor driven constant delivery pump is used for injecting high-pressure oil liquid to the energy accumulator. The hydraulic system disclosed by the invention has the main advantage of high efficiency.

The invention discloses a mono-stability self-locking gas clearance permanent operating mechanism used for large open contact and high voltage breaker in the medium and high voltage electrical switch field. When used for medium voltage breakers, the mechanism can lower exciting current and increase electromagnetic force. The permanent magnetic operation mechanism mainly consists of a magnetic circuit system, a transmission system, a locking system, and a supporting system. Permanent magnet of the magnetic circuit system is embedded between the internal and external static iron cores; magnetic coils are embedded in the coil groove constituted by the internal and external static iron cores and dynamic iron cores. Clearance is reserved between the internal, external static iron cores and dynamic iron core. Core shaft is pressed on a limiting block by a nut after pulling through a lock disc, a dynamic iron core, and a switch spring, an end cover, and a limiting block in the magnetic circuit system. The invention can well control the closing and opening speed of switch contacts and reduce the collision and bouncing of contacts. Suitable for breakers of different voltage grades, particularly high voltage vacuum breakers with big open contacts, the invention can lower exciting current and energy consumption more reliably.

The present invention relates to a dual stator and rotor switch reluctance motor, which comprises stator and rotor that stacked and pressed into salient pole structure by silicon steel sheet, wherein core of the stator and rotor are composed by two segments, and length of core of the two-segment stator and rotor equal to diameter; the stator tooth is provided with two set of centralized armature winding respectively while two teeth of same phase in each set of windings are provided with armature winding that connected in series or in parallel to constitute a phase, characterized in that: the two-segment stator is staggered 360p/2Ns degree electrical angle for mounting, wherein p is number of pole-pairs of stator magnetic pole, Ns is stator magnetic pole number; the two-segment rotor staggered 360/2Nr degree electrical angle for mounting, wherein Nr is rotor magnetic pole number. The present invention can reach purpose of high starting torque, low swinging motion and low noise operation.

A fuel tank is provided with: a fuel pump; a main tank section which has the fuel pump arranged therein and stores a fuel; a sub-tank section wherein the fuel is stored; and a siphon tube which is arranged over the main tank section and the sub-tank section, and sucks the fuel by means of the fuel pump. The open end of the siphon tube on the main tank section side is arranged outside a jet pump for suction.

An arc start control method comprises starting advance of a welding wire, and determining that a distal end of a welding wire contacts a base material and short circuit is caused. If a feed torque value is a reference torque value or greater, the welding wire is retracted and the distal end of the welding wire is separated from the base material without generating an arc. If the feed torque value is smaller than the reference torque value the welding wire is retracted and the distal end of the welding wire is separated from the base material and an initial arc is generated between the welding wire and the base material.

The present invention provides an application program starting method and apparatus. The application program starting method comprises starting an application program after an operating system starts, and hiding the started application program on a first operation interface invisible to a user; and receiving an instruction, sent by the user, of starting the application program, and loading the application program from the first operation interface to a second operation interface visible to the user. According to the application program starting method provided in the present invention, time that the user waits for starting of the application program can be shortened, thereby improving a starting effect of the application program.

The invention discloses an evaporator and a liquid reservoir used for a loop heat pipe and belongs to the technical field of evaporators. A capillary core structure is adopted for spacing inner spaces of the evaporator and the liquid reservoir, liquid in the liquid reservoir can enter the evaporator through the capillary core, meanwhile the liquid is heated and evaporated to generate steam in the evaporator, and the steam flows out of a steam outlet in an end cover of the evaporator. Due to the fact that the capillary core can generate capillary pressure, the steam in the center of the evaporator can be effectively prevented from entering the liquid reservoir, distribution and flowing of the gas liquid are controlled, and then heat leakage from the evaporator to the liquid reservoir is effectively reduced. The distribution and a flowing route of the gas liquid in the evaporator are adjusted initiatively, therefore the radial heat leakage from the evaporator to the liquid reservoir can be completely eliminated, and the purpose that the heat leakage from the evaporator to the liquid reservoir is effectively reduced is achieved so that starting performance and running stability and reliability of the loop heat pipe can be improved.

The invention discloses an embedded system starting method and an embedded device, which relate to the computer technology. The embedded system starting method comprises the following steps of: after a bootloader on an embedded chip is started, reading a pre-stored configuration file; according to the configuration information in the configuration file, initializing the start frequency of an embedded system; and starting the embedded system by using the initialized start frequency of the embedded system. Because the pre-configured configuration file is read by the bootloader before the start frequency of the embedded system is initialized, and the start frequency of the embedded system is initialized according to parameters in the configuration file, so the start performance of the embedded system is improved.