CN101737142B

CN101737142B - Electronically controlled silicon oil fan clutch

Info

Publication number: CN101737142B
Application number: CN200810162317XA
Authority: CN
Inventors: 戴宏鸣; 崔华南
Original assignee: BorgWarner Shenglong Ningbo Co Ltd
Current assignee: BorgWarner Shenglong Ningbo Co Ltd
Priority date: 2008-11-21
Filing date: 2008-11-21
Publication date: 2011-12-14
Anticipated expiration: 2028-11-21
Also published as: CN101737142A

Abstract

The invention relates to an electronically controlled silicon oil fan clutch. The fan clutch comprises a shell, a front cover, an oil storage cavity, a driving shaft which is inserted in the shell and an active plate arranged on the driving shaft, wherein the front cover is connected with the shell in a sealing manner to form an internal space, the internal space is provided with a meshing cavity and a channel which communicates the meshing cavity with the oil storage cavity and is used for the circular flow of silicon oil, and a valve block which is used to control the opening of the oil outlet of the oil storage cavity is arranged between the oil storage cavity and the meshing cavity. The fan clutch is characterized in that an electromagnetic valve is fixedly connected with the front cover to constitute the oil storage cavity, the oil outlet is arranged on the front cover, the electromagnetic valve is connected with a motor electronically controlled unit, after electrified, the electromagnetic valve is connected with the valve block in a driving manner to ensure that the valve block rotates to be matched with the oil outlet, thus controlling the flow of the silicon oil which flows from the oil storage cavity to the meshing cavity. Compared with the prior art, the invention has the advantages that the response is fast, the external influence on the fan clutch is small, the controlling elements are various, and the control accuracy is high.

Description

Electronically controlled silicon oil fan clutch

Technical field

The present invention relates to a kind of engine-cooling system assembly, relate in particular to a kind of silicon oil filled fan clutch.

Background technique

Energy saving is a long-range policy of national development economy.Show according to relevant research data, the energy consumption of automobile 5～10% is on the fan cooled of motor, and in fact the automobile work most of the time is not need fan cooled, generally had only for 5～10% times just needed fan cooled, so the fan automatic clutch technology of automobile is the important guardian technique of vehicle energy saving, there are a lot of technician that the clutch of fan automatic clutch has been carried out technological improvement for this reason.Their are general, and what adopt is bimetal temperature sensibility structure, and the temperature of the air that blows from radiator by the impression of bimetal temperature sensibility produces the switch that thermal distortion comes control valve

Existing automobile is from silicon oil filled fan clutch, its working principle is by temperature sensibility the hot load state of motor to be converted into to rotatablely move, when the motor overburdening, drive the valve block rotation with valve open, and then silicone oil is constantly circulated between working room and accumulator, carry out high speed rotating thereby drive fan, make motor in time obtain cooling; When engine load was low, the silicone oil of accumulator no longer flowed to the working room, and drive fan and carry out low speed rotation this moment, played the effect of balanced engine load.

Domestic and international employed silicon oil filled fan clutch mostly is to have temperature feeling ring at present, and temperature feeling ring is a kind of core component on the silicon oil filled fan clutch product, and their general temperature feeling rings that adopts are the circle types, are a kind of spiral line type bimetallic strip structures.

Referenced patent number is ZL93201277.9 China utility model patent " taking back the drive fan viscous of oil groove and curved radiating fin " (notice of authorization number: CN2158922Y), adopt the linear bimetallic strip structure of a kind of spiral as temperature sensibility in this patent, the temperature sensibility of this structure causes extraneous collision easily and causes linear the change, thereby influences the integrity energy charge working life of clutch.

Chinese for this reason utility model patent: ZL01252855.2 and ZL02216970.9 all disclose a kind of drive fan viscous that improves structure, by the improvement to the temperature sensibility structure, thereby reduce the influence that extraneous collision brings.

Yet above-mentioned clutch all adopts temperature sensibility to control valve block and opens and closes, so have the following disadvantages: the first, speed of response is slow, and bimetal temperature sensibility thermal distortion speed is slow; The second, control accuracy is low, and there is individual difference in the temperature sensibility quality, and thermal distortion is not desirable linearity; The 3rd, be subject to environmental disturbances, the temperature of the air that blows from radiator is subjected to ambient temperature, radiator to the temperature sensibility distance affects; The 4th, layout restrictions, in order to experience radiator temperature, temp-sensitive apparatus has certain limitation to the radiator distance; The 5th, operating temperature range is limited, and the temperature sensibility heat distortion amount is limited; The 6th, controlling element is single, can only regulate control by radiator temperature; The 7th, passive type control can only change the back action at radiator temperature; The 8th, can only realize open loop control; The 9th, control logic that can only realize fixing, simple relies on product structure to realize, and structure be fix, can not be too complicated.

Also have the automatically controlled silicon oil filled fan clutch of a kind of external control type, fully by engine electronic control unit collecting temperature signal and export electrical signal control, clutch itself is only carried out and is moved.Open with reference to the Chinese invention patent application: CN1807917A, a kind of " controlling method of external control type fan clutch " disclosed, this clutch can only be applicable to the above motor of Europe III, many motors can not use.

Summary of the invention

Technical problem to be solved by this invention is that a kind of precision height, the fast electronically controlled silicon oil fan clutch of response are provided at the above-mentioned state of the art.

The present invention solves the problems of the technologies described above the technological scheme that is adopted: a kind of electronically controlled silicon oil fan clutch, comprise housing, protecgulum, shoe cream room, be inserted in the driving shaft in the housing and be located at active plate on the driving shaft, this protecgulum and housing seal are connected to form the inner space, this inner space has the engagement chamber and will mesh the passage that supplies silicone oil to circulate that the chamber is communicated with shoe cream room, and between shoe cream room and engagement chamber, be provided with the valve block of the oil outlet aperture size of control shoe cream room, it is characterized in that described solenoid valve fixedlys connected the formation shoe cream room with protecgulum, oil outlet is opened on protecgulum, solenoid valve links to each other with engine electronic control unit by wire harness, the energising rear electromagnetic valve drives and connects valve block, valve block is rotated cooperate, control silicone oil flows to the engagement chamber from shoe cream room flow with oil outlet.

As preferably, described solenoid valve connects to form supporting structure by end cap, plug, core retainer plate, oil storage cover, and coil stationary is enclosed within on the plug by bearing coil on coil housing; Bearing coil one side has end cap; Iron core is fixed on the oil storage cover; Armature is enclosed within on the plug by bearing shell, and is spacing by pin; Armature is connected to iron core by a spring, and armature can rotate in certain limit under torsion spring and iron core restriction; Be fixed with valve block on the armature.

As preferably, described driving shaft is by the spacing active plate that is fixed with of snap ring.Described active plate and protecgulum, housing constitute the engagement chamber.

Compared with prior art, the invention has the advantages that: cancelled the temperature feeling ring on traditional silicon oil filled fan clutch, the various information that adopt electronic control unit will collect by predetermined parameters, through editable program, be converted to electrical signal, pass to clutch, the size of current that clutch transmits according to electronic control unit, produce the magnetic field of corresponding size, and then make armature drive the break-make that the valve block rotation realizes silicone oil between shoe cream room and the engagement chamber, so can predict in advance, response is fast, be subjected to ectocine little, controlling element is various, and the control accuracy height is not limited by the temperature sensibility heat distortion amount, temperature controlling range is wide, and layout can be rearranged in the clutch.

Description of drawings

Fig. 1 is the example structure schematic representation.

Fig. 2 is the solenoid valve enlarged diagram.

Fig. 3 is a solenoid valve part component structural schematic representation.

Fig. 4 is a solenoid valve "on" position schematic representation.

Fig. 5 is a solenoid valve off-position schematic representation.

Embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

Embodiment: with reference to shown in Figure 1, the drive fan viscous in the present embodiment includes driving shaft 1, housing bearing 2, housing 3, Front Cover Bearing 4, protecgulum 5, active plate 6, solenoid valve 8 and wire harness 14.

Be fixed with driving shaft 1 by housing bearing 2 in the middle of the housing 3, be combined with seal ring 9 between protecgulum 5 and the housing 3, fixedly connected by screw 10; Be fixed with active plate 6 on the driving shaft 1; Active plate 6 constitutes engagement chamber 1 with protecgulum 5, housing 3, solenoid valve 8 is fixedlyed connected formation shoe cream room 12 with protecgulum 5, there is silicone oil in the shoe cream room 12, the oil outlet 13 of shoe cream room 12 is opened on protecgulum 5, and by solenoid valve 8 control switchs, solenoid valve 8 links to each other 15 by wire harness 14 with engine electronic control unit.Driving shaft 1 is by the snap ring 7 spacing active plates 6 that are fixed with.

Referring to figs. 2 and 3 shown in, solenoid valve 8 connects to form supporting structure by end cap 81, plug 82, core retainer plate 83, oil storage cover 84, and coil 85 is fixed on the coil housing 86, is enclosed within on the plug 82 by bearing coil 87, bearing coil 87 1 sides have end cap 81, and iron core 88 is fixed on the oil storage cover 84.

Armature 89 comprises rotating disc 891 and the annular flange flange 892 that is formed by rotating disc 891 central protuberance, valve block 100 and connecting sheet 104 (seeing Fig. 4 and shown in Figure 5) are located on the rotating disc 891, annular flange flange 892 inwalls are provided with plug 82 outer walls rotationally by a bearing shell 103, and a pin 101 is located on the plug 82 connecting sheet 104 to realize the axial limiting to armature 89.

Torsion spring 102 1 ends are connected with iron core 88, and the other end then is connected with armature 89, are used for armature 88 and reset.Armature 89 can rotate in certain limit under torsion spring 102 and iron core 88 restrictions.

Electric current produces magnetic field by coil 85, and magnetic field is passed iron core 88 and attracted armature 89, and the control electric current is controllable valve sheet 100 apertures.

Present embodiment comes the valve block 100 of solenoidoperated cluthes to open and close according to the instruction of car engine electronic control unit 15, and then adjust silicone oil Flow Distribution state, change the engagement moment of active plate 6 and protecgulum 5, housing 3, thereby drive fan is rotated with different speed and is reached cooling and energy-conservation purpose.

With reference to figure 1 and shown in Figure 4, when engine electronic control unit 15 control circuits produce electric current, electric current produces magnetic field by wire harness 14 through coil 85, magnetic field is passed iron core 88 and is attracted armature 89 rotations, drives valve block 100 oil outlet 13 is closed, and silicone oil just mainly concentrates on shoe cream room 12 like this, the silicone oil amount that the engagement chamber is 11 li is just few, shearing force between them is just little like this, and just the engaging force between them is just little, and this moment, fan can only low speed rotation.

With reference to figure 1 and shown in Figure 5, when engine electronic control unit 15 control circuit interruptive currents, armature 89 resets under spring 102 elastic reactions, valve block 100 is opened oil outlet 13, and this moment, silicone oil flowed to engagement chamber 11 by shoe cream room 12, along with increasing of silicone oil, active plate 6 increases with the engaging force of protecgulum 5, housing 3, thereby drive whole clutch high speed rotating, rotation speed of the fan also improves rapidly, realizes cooling fast.So repeatedly, realize air-cooled, energy-conservation purpose.

In addition, if valve block 100 initial positions, then can be realized above-mentioned opposite oil outlet switch motion for closing.

Claims

1. electronically controlled silicon oil fan clutch, comprise housing, protecgulum, shoe cream room, be inserted in the driving shaft in the housing and be located at active plate on the driving shaft, this protecgulum and housing seal are connected to form the inner space, this inner space has the engagement chamber and will mesh the passage that supplies silicone oil to circulate that the chamber is communicated with shoe cream room, and between shoe cream room and engagement chamber, be provided with the valve block of the oil outlet aperture size of control shoe cream room, it is characterized in that solenoid valve fixedlys connected the formation shoe cream room with protecgulum, oil outlet is opened on protecgulum, solenoid valve links to each other with engine electronic control unit by wire harness, the energising rear electromagnetic valve drives valve block, valve block is rotated cooperate, control silicone oil flows to the engagement chamber from shoe cream room flow with oil outlet;

Described solenoid valve connects to form supporting structure by end cap, plug, core retainer plate, oil storage cover, and coil stationary is enclosed within on the plug by bearing coil on coil housing; Bearing coil one side has end cap; Iron core is fixed on the oil storage cover; Armature is enclosed within on the plug by bearing shell, and is spacing by pin; Armature is connected to iron core by a torsion spring, and armature can rotate in certain limit under torsion spring and iron core restriction; Be fixed with valve block on the armature;

Described armature comprises rotating disc and the annular flange flange that is formed by the rotating disc central protuberance, valve block and connecting sheet are located on the rotating disc, the annular flange flange inwall is provided with the plug outer wall rotationally by a bearing shell, and a pin is located on the plug connecting sheet to realize the axial limiting to armature.

2. electronically controlled silicon oil fan clutch according to claim 1 is characterized in that described driving shaft is by the spacing active plate that is fixed with of snap ring.

3. electronically controlled silicon oil fan clutch according to claim 2 is characterized in that described active plate and protecgulum, housing constitute the engagement chamber.