321 results about "Fan clutch" patented technology

A hydraulically controlled fan drive system (12) having a method of engagement includes a housing assembly (20) containing a hydraulic fluid (48) and an engaging circuit (36). The engaging circuit (36) includes a pitot tube (152) coupled within the housing assembly (20) that receives at least a portion of the hydraulic fluid (48). An engaging circuit (36) engages the housing assembly (20) to a fan shaft (44) in response to supply of the hydraulic fluid (48) from the pitot tube (152).

The invention belongs to the technical field of automotive cooling systems, and particularly relates to a three-speed electromagnetic fan clutch. The three-speed electromagnetic fan clutch is characterized in that a magnet fixing disc is arranged in a fan fixing disc cavity, the magnet fixing disc is connected with a main shaft through a bearing, and the magnet fixing disc is fixedly connected with a small attraction disc through a small elastic sheet. Therefore, the three-speed electromagnetic fan clutch has the advantages of simple structure, large attraction torque, small recoil force, highreliability and long service life.

A method is provided for controlling an external control type fan clutch. The method controls the On / Off of an electromagnet-activated valve for an oil feed adjusting hole. The method uses a PID control on the basis of radiator cooling liquid temperature, fan speed, transmission oil temperature, vehicle speed, engine speed, compressor pressure of an air conditioner, and an On / Off signal of the air conditioner. Individual gains of the PID control are determined by a gain matrix containing the optimum fan speed demanded by the engine, the actual metered fan speed, and the engine speed. The PID control is made on the basis of the gains to that a control signal is outputted. The control method can improve mileage, raise the cooling efficiency of an air conditioner and suppress fan noise.

The invention discloses to a fan clutch with magnetic rheologic fluid, comprising active plate, passive plate, magnetic rheologic fluid, drive shaft, excitation coil, bearing and sealing device. Drive shaft is connected with active plate set in hollow cavity of passive plate. Passive plate is divided into frontal and rear shell. Sealing cover, excitation coil and outer ring of clutch are set orderly from inner to outer between frontal and rear shell. Rheologic fluid is injected into the cavity formed by active and passive plate and excitation coil supplies power by carbon brush assembled at the central axis of frontal shell. Drive shaft is connected with engine and passive plate is connected with fan. The invention is a circular clutch with magnetic rheologic fluid. The structure is very compact and it is applied in narrow space between cooling fan and water tank of engine. Rheologic fluid is flowing iteratively in the space between active and passive plate, which is advantaged to eliminate heat and prolongs the service life of rheologic fluid.

The invention discloses an electromagnetic fan clutch which comprises a clutch rotor, an internal clutch plate, an external clutch plate, a built-in coil, an external coil, a fan pedestal and a driving part, wherein the internal clutch plate and the external clutch plate are arranged opposite to the clutch rotor, the built-in coil and the external coil are positioned in the clutch rotor, the driving part and the fan pedestal are in driving connection, and the fan pedestal and the driving part are respectively connected with the internal clutch plate and the external clutch plate. Because the clutch rotor is provided with a copper ring for insulating an electromagnetic force, when the built-in coil and the external coil are respectively electrified, the internal clutch plate and the external clutch plate can be only sucked, and the torque of the clutch rotor is respectively correspondingly transmitted onto the driving part or the fan pedestal; when the torque is directly transmitted onto the fan pedestal, a fan is rotated at a high speed; and when the torque is transmitted onto the driving part, the fan is driven to rotate at a low speed under the action of the floating magnetic force between an iron part and a magnetic pole, so that the clutch has double-stage rotating speeds and corresponds to different radiating requirements, which is beneficial to saving energy and improving the fuel economical property.

The invention discloses a volume percentage variable magnetorheological fluid fan clutch which comprises a driving shaft, a driving cylinder, a left driven disc, a driven cylinder, a right driven disc and a driven shaft, wherein a driving disc is arranged in a chamber defined by the left driven disc, the driven cylinder and the right driven disc; a casing pipe is arranged on the left side of the driving disc; a shape memory alloy spring is arranged between the casing pipe and a connection disc; an inner magnetism isolating ring and an outer magnetism isolating ring are arranged on the right side of the driving disc; a magnet exciting coil is arranged in a coil groove; a filtering system is arranged on the right side of the driving disc; a working cavity is filled with a magnetorheological fluid; a fluid storage cavity is filled with a base fluid; an electric brush slip ring is arranged on the driving cylinder; the two poles of the electric brush slip ring are connected with the two ends of the magnet exciting coil respectively; and a shape memory alloy touch-piece switch is fixed to the driving cylinder. According to the volume percentage variable magnetorheological fluid fan clutch, output power can be adaptively adjusted, so that an automobile engine can work in an appropriate temperature range on all working conditions.

Disclosed is an electrically controlled silicon oil fan clutch rotary valve device. The valve device is based on a magnetic mandrel, including a triangle, a driven disc, a driving disc, and a guide disc intercombined, which achieves control over flow of silicon oil by controlling rotation of a valve, and achieves precise control over positions by resetting through a reset torsion spring and using outer teeth and inner teeth of the driving disc and the driven disc as well as a stop device. In the present invention, the valve may be controlled to be stable at an appropriate position through the size of the current of the coil, so as to achieve a stepless speed and achieve a purpose of precisely controlling the clutch.

An electronic silicone oil fan clutch comprises a shell, a front cover, an oil storage cover, a driving shaft plugged in the shell and a driving board arranged on the driving shaft, and is characterized by also comprising a valve ring, a mandril, a resetting member and an electromagnetic valve; the valve ring is fixed on the tail of the mandril, axially penetrates through the hollow driving shaft and moves back and forth; the electromagnetic valve is connected with an engine electronic control unit by a wire bundle, generates magnetic field after powered up to suck the mandril to move forwards to realize control on openness degree of the oil outlet hole by the valve ring. Compared with the prior art, the invention has the advantages that various information is collected by the electronic control unit through preset parameters, according to the magnitude of current transmitted by the electronic control unit, the clutch generates a magnetic field corresponding to the magnitude, so that the mandril drives the valve block to move to realize connection and disconnection of silicone oil between an oil storage cavity and a meshing cavity, thus being capable of notifying in advance, and having the advantages of fast response, little influence by external, diverse control factors and high control preciseness.

The invention discloses an improved invention of a silicon oil fan clutch, which is essentially characterized in that a control component is composed of an executing unit, a temperature sensor and an ECU. The executing component and the temperature sensor are respectively connected with the ECU. In the invention, as a previous thermal sensitive spiral and bimetal spring temperature detector is modified into an electronic temperature sensor for detecting the temperature, and then the detected temperature is fed back to the ECU (an electronic controller unit) which rapidly sends out an order to cause the executing unit to be operated after distinguishing treatment, an oil inlet is opened and closed rapidly and precisely by a valve. Compared with the prior art, the invention has outstanding substantive features and obvious progress.

An electronic system, an apparatus for cooling an electronic system, an electronics cooling apparatus, and associated method use a clutch to operate a cooling fan. An electronics cooling fan for usage in cooling an electronic system comprises a clutch that disengages upon failure wherein the electronics cooling fan is configured to freewheel upon disengagement of the clutch.

The invention discloses a clutch of a magneto rheological fluid (MRF) fan. The clutch disclosed by the invention comprises a power shaft, a fixed sleeve and an output disk, wherein a cavity filled with an MRF is arranged between the fixed sleeve and the output disk and is filled with a driving disk and a driven disk; the power shaft drives the driving disk and the driven disk drives the output disk; the fixed sleeve is internally provided with a positive coil and a negative coil which have different magnetic pole polarities, and a magnetism-isolation disk is arranged between the positive coiland the negative coil. The clutch disclosed by the invention has the advantages that the positive coil and the negative coil are arranged in the fixed sleeve, so that the output magnetic field is more stable, correspondingly the viscosity change of the MRF is also more stable, and the transmission is smoother; and the positive coil and the negative coil are separated by the magnetism-isolation disk, so that closed magnetic lines are formed, magnetic leakage is less, and the magnetic field distribution is more uniform.

The invention discloses an efficient flow-guide electric-control silicone oil fan clutch assembly. The clutch assembly comprises a driving shaft (2), a shell (6), a driving plate (7), a driven plate (10) and a front cover (12), wherein a fan (16) is arranged on the shell, a solenoid valve component (3) is arranged on the driving shaft, a magnetic conducting piece (11) is arranged on the driving plate and close to the driving shaft, an oil storage chamber (9) is arranged on the driving plate and between the driving plate and the driven plate, a circulating oil way (17) communicated with the oil storage chamber (9) is arranged in the front cover, and a working cavity (18) communicated with the oil storage chamber and the circulating oil way is arranged between the shell and the driving plate as well as the front cover and the driving plate. With the fan clutch assembly, the circulating and flowing speed of the silicone oil can be raised, the meshing response time and the separating response time between the driving part and the driven part of the fan clutch assembly are relatively shortened, and the rotating speed of the fan is controlled in real time, so that an engine runs at an optimal temperature all the time, and the purposes of energy saving, emission reduction and noise reduction of an automobile are realized.

Provided is a method for controlling a magnet type fan clutch, by which method engine performance, fuel efficiency, engine life, vehicle acceleration capability and other properties of a magnet type fan clutch can be further improved and its fan noise can be further reduced. This method is adopted for controlling a magnet type fan clutch which includes a magnet coupling, an electromagnetic clutch combined with the magnet coupling to control the on / off switching of the magnet coupling, and a fan attached to the magnet coupling. The control method is characterized in that the electromagnetic clutch is turned on or off based on at least one signal of temperatures of radiator coolant, engine oil and transmission oil, a vehicle speed, a rotational speed of an engine, compressor pressure of an air conditioner, and an on / off signal of the air conditioner, etc., so as to control the rotation of the fan.

The present invention relates to a silicon oil fan clutch which comprises a casing and a front cover. The front cover is sealed and connected with the casing to form an internal space. The internal space comprises an oil storage cavity and a meshing cavity. A valve plate which controls silicon oil circulation between the oil storage cavity and the meshing cavity is arranged between the oil storage cavity and the meshing cavity. The silicon oil fan clutch is characterized in that the clutch also comprise an electromagnet which can absorb the valve plate to close after being electrified and a wiring harness which is connected with an electronic control unit; the electromagnet consists of an iron core and a coil which is arranged on the iron core; the valve plate is elastic under the state without stress; due to self elasticity, the valve plate opens an oil storage hole leading the oil storage cavity to the meshing cavity. Compared with the prior art, the silicon oil fan clutch also has the advantages that the silicon oil fan clutch is free of a temperature sensing ring at the traditional silicon oil fan clutch and adopts the electronic control unit, thereby having the advantages of high precision, fast response and large temperature control range.

The invention discloses an integral coupled fan clutch bearing, a main body structure of which is also applicable to a coupled bearing of an automobile water pump. The bearing comprises double-row rollers and single-row steel balls, and comprises an bearing outer ring, a mandrel, a steel ball retainer, a roller retainer and a seal ring, wherein a groove and a roller path are formed in the bearing outer ring for bearing rolling elements and guiding the rotation of the rolling elements, the rolling elements comprise steel balls and cylindrical rollers, the mandrel is axially inserted into the bearing outer ring, an inner groove is formed in the outer diameter of the mandrel and is used for bearing the steel balls and guiding rotation of the steel balls, an inner roller path is formed in the outer diameter of the mandrel and is used for bearing the cylindrical rollers, the steel ball retainer is arranged between the bearing outer ring and the mandrel, and is used for enabling the steel balls to be evenly distributed in the groove at intervals, the roller retainer adopts the structural design of a barrel-shaped structure and a spring collar, the spring collar is assembled on the bearing outer ring in a matching manner for preventing the cylindrical rollers from jumping out along the axial direction, and the seal ring is pressed into a seal groove in the end part of the bearing outer ring and keeps the stationary state with the bearing outer ring.

Provided is a method for controlling a magnet type fan clutch, by which method engine performance, fuel efficiency, engine life, vehicle acceleration capability and other properties of a magnet type fan clutch can be further improved and its fan noise can be further reduced. This method is adopted for controlling a magnet type fan clutch which includes a magnet coupling, an electromagnetic clutch combined with the magnet coupling to control the on / off switching of the magnet coupling, and a fan attached to the magnet coupling. The control method is characterized in that the electromagnetic clutch is turned on or off based on at least one signal of temperatures of radiator coolant, engine oil and transmission oil, a vehicle speed, a rotational speed of an engine, compressor pressure of an air conditioner, and an on / off signal of the air conditioner, etc., so as to control the rotation of the fan.

An electronics cooling fan comprises a centrifugal clutch adapted to disengage and freewheel upon fan failure.

A control system for a fan of a cooling system of an internal combustion engine of a motor vehicle having a viscous coupling (fan clutch) driving the fan and a control unit (PID governor) to which the setpoint temperature and the measured actual temperature of the cooling system (coolant temperature) are fed. The control unit (PID governor) is connected downstream to a limiter, which holds the ratio of output speed to input speed below a specifiable limit (x % of input speed). An overheat protection logic disables the limiter when the actual coolant temperature exceeds a specifiable critical temperature that is higher than the setpoint temperature of the control unit (PID governor).

A compressed air energy storage type mini-type wind driven generator comprises a draught fan body portion, a gas energy storage portion and an energy storage conversion portion, wherein a draught fan main shaft between a wind wheel of the draught fan body portion and the generator is provided with a draught fan driving wheel and a draught fan clutch; the gas energy storage portion is mainly composed of a gas storage main shaft, an air compressor, a gas storage pipeline and a gas storage tank which are sequentially connected; the gas storage main shaft is provided with a gas storage driving wheel and a gas storage clutch; the gas storage driving wheel corresponds to the draught fan driving wheel; the energy storage conversion portion is mainly composed of an outgassing pipeline, an outgassing motor and an outgassing main shaft which are sequentially connected together; the outgassing pipeline is connected to the gas storage tank; the outgassing main shaft is provided with an outgassing driving wheel and an outgassing clutch; the outgassing driving wheel corresponds to the draught fan driving wheel; the draught fan body portion, the gas energy storage portion and the energy storage conversion portion are controlled by a controller, so that three states that the draught fan body portion generates power by itself, the draught fan body portion drives the gas energy storage portion to operate to store energy, and the energy storage conversion portion drives the draught fan body portion to generate power are achieved.

The invention relates to a silicone oil fan clutch with controllable separation speed. The silicone oil fan clutch with controllable separation speed comprises a sealed bearing, a shell arranged on an outer ring of the sealed bearing and a driving shaft arranged on the inner ring of the sealed bearing. A driving disc is arranged on the driving shaft, the driving disk is arranged in the shell, and an oil storage cavity is formed in the shell. An oil-guiding groove is formed in an outer cylindrical surface of the driving disc, and a raised rib strip is also arranged on the outer cylindrical surface of the driving disc. The silicone oil fan clutch with controllable separation speed provided by the invention has the advantages that a raised rib strip is further arranged on the outer cylindrical surface of the driving disc, when the silicone oil fan clutch transforms from a meshed mode into a separated mode, the rib strip can guide a fraction of silicone oil into a clearance between the outer cylindrical surface of the driving disc and the shell from a clearance between the upper portion of the driving disc and the shell, an oil pressure zone with certain pressure is formed on one side of the rib strip, the additional transmission function is generated in this way, and the separation speed of the silicone oil fan clutch is improved.

The invention discloses a four-speed electromagnetic fan clutch. A driving disc is connected to one side of a main shaft; an electromagnetic iron core is embedded into the driving disc; a fist coil and a second coil are arranged in the electromagnetic iron core; a fan fixing disk is arranged on the other side of the main shaft; a first magnetic fixing disk in which a first permanent magnet is embedded is arranged between the fan fixing disk and the driving disc; the first magnet fixing disk and the fan fixing disk are respectively connected with a first sucking disk and a second sucking disk through elastic sheets; a third sucking disk is also arranged on the four-speed electromagnetic fan clutch; the centers of the first sucking disk, the second sucking disk and the third sucking disk are superposed; a second magnet fixing disk in which a second permanent magnet is embedded and a drive disc are sequentially arranged between the fan fixing disk and the first magnet fixing disk; the drive disc is fixedly connected onto the fan fixing disk; iron parts are arranged at the positions, which correspond to the first permanent magnet and the second permanent magnet, of the drive disc; the first magnet fixing disk and the second magnet fixing disk are sleeved on the main shaft through a composite bearing and are respectively and fixedly connected with an outer ring and an intermediate ring of the composite bearing; the third sucking disk is connected with the intermediate ring of the composite bearing through an elastic sheet; and a third coil is also arranged in the electromagnetic iron core.

The invention discloses an efficient heat distribution and intelligent control method of a motor truck. According to the method, the on-off time and the rotating speed of a moving piece are controlled intelligently through an EMS system; a temperature self-learning intelligent control method of an electronic fan clutch is added into a high pressure common rail electronic control system strategy of an engine, that is, different cooling liquid temperatures and temperature rising rates are monitored, the control over the electronic fan clutch is learned automatically in combination with the environment temperature, and thus extra cooling loss of the engine is reduced. The method adopts multiple rounds of concept and scheme design, theoretical calculation and CFD analysis, experimental verification and optimization design, on the basis that no special hardware is added, energy conservation and noise reduction of a cooling system of the motor truck are achieved and the service life of parts is prolonged through the improvement of heat exchange capacity and intelligent control, thus, system reliability is improved, and usage cost and maintenance cost of a user are reduced substantially.

A fan clutch is provided to which a fan may be removably attached with the aid of a flange ring, the fan clutch having a housing that comprises a first front housing part and a second rear housing part to which the flange ring is attachable with the aid of connecting elements (8). The housing has circumferential attachment niches which are situated in an offset manner in the circumferential direction on both the front and the back of the housing and into which attachment tabs situated on the flange ring are insertable either from the from of the fan clutch or from the rear thereof.

The invention relates to an electromagnetic fan clutch structure for a diesel engine, in particular to a speed adjustable electromagnetic fan clutch structure with an independent controller. The speed adjustable electromagnetic fan clutch structure with the independent controller is used for adjusting the rotating speed of a radiating fan of the diesel engine. The invention belongs to the technical field of an engine. The speed adjustable electromagnetic fan clutch structure with the independent controller comprises an electromagnetic fan clutch and is characterized by further comprising a controller and a water temperature sensor, the controller is provided with a microprocessor, and an output end of the controller with the microprocessor is connected with the water temperature sensor, and the water temperature sensor is connected with the electromagnetic fan clutch. Signals such as water temperature, oil temperature of a torque converter and air-conditioning working state can be adopted so as to forecast various factors due to overflow water temperature, produce a control function in advance, and accordingly ensure stability of water temperature of a whole car. Meanwhile, the speed adjustable electromagnetic fan clutch structure with the independent controller is capable of reducing power loss of the diesel engine, reducing oil consumption of the whole car, and enabling the water temperature of the engine of the whole car to be always in a reasonable interval. The speed adjustable electromagnetic fan clutch structure with the independent controller is economic, practical, high-efficiency, and capable of meeting the requirement for mass production.

A viscous fluid clutch assembly used in automobiles, SUVs, and trucks minimizes flow back of the cooling fluid from the reservoir towards the working chamber of the clutch when the vehicle is at rest and avoids excessive fan noise, wasted power and fuel inefficiency when a cold automobile engine is started. The clutch utilizes a discharge channel extending from the periphery of the working chamber to the reservoir and a specially designed ball check valve at the entrance to the reservoir which is open or closed depending on operation of the vehicle. The ball check valve is fluidly connected to the working chamber of the fluid clutch by a preferred articulated discharge channel which starts at the working chamber of the fluid clutch and ends at the reservoir of the fluid clutch.

A hand held tool to prevent a pulley from rotating around an axis of rotation. A handle portion is provided on the tool to be held by a user of the tool. An engaging portion is provided to grip a portion of the pulley and prevent the pulley from rotating around the axis when said handle portion is held by the user. A tool is used to remove a fan clutch on an automobile engine. The tool has a handle portion having a user gripping portion disposed at one end and a connecting portion at another end. An engaging portion is used to grip a rim of the pulley and prevent the pulley from rotating around its rotating axis. The engaging portion has a U-shaped body with a base connected to the connecting portion of the handle portion and two arms extending radially from an axis formed by the elongated rod of the handle portion. The arms are displaced from one another by an amount sufficient to receive a rim of the pulley and have a sufficient size to form a friction surface to inhibit rotation of the pulley around its rotating axis when the arms engage the rim of the pulley.

A control method of a magnet type fan clutch is provided to improve engine performance, fuel economy, engine life, and vehicle acceleration and to reduce fan noise, and optimize fan horsepower. The magnet type fan clutch has a magnet coupling combined with an electromagnetic clutch. The method includes turning the electromagnetic clutch ON and OFF on the basis of cooling fluid temperature, engine oil temperature, transmission oil temperature, vehicle speed, engine rotation rate, accelerator opening, compressor pressure of an air conditioner, an On or Off signal of the air condition, a fuel injection indication amount, a clutch activation lower limit temperature and its lower temperature, and an engine rotation rate set value to control the fan rotation.

The invention relates to an electromagnetic fan clutch, which is used for dissipating heat of an automobile engine and aims to be compact in structure and more stable in running. The electromagnetic fan clutch comprises a rotary spindle, electromagnet cores with embedded coils, a driven plate and a driving plate, wherein the electromagnet cores are sequentially sleeved from a support end to a free end along the axial direction of the spindle, the driven plate can rotate around the spindle, the driving plate can rotate along with the spindle, and a sucking plate capable of axially moving is disposed between the driving plate and the driven plate and is connected with the driving plate by an elastic sheet.

Systems, methods and devices for the control of fans are presented. More specifically, embodiments of the present invention relate to a fan clutch control unit for a vehicle fan. The fan clutch control unit executes a control loop section and a strategy section to provide control functionality. The fan clutch control unit may be provided as a pre-packaged control board or integrated into a fan clutch.