https://www.jonyautoparts.com/car-fuaraithe-fan/
Nuair a bhíonn an fheithicil in úsáid, gineann an t-inneall teas iomarcach. D'fhonn nach n-oibreoidh an t-inneall i gceart mar gheall ar róthéamh, déantar córas fuaraithe scaipeadh leachtach fuaraithe a dhearadh, ina bhfuil ról lárnach ag an lucht leanúna fuaraithe. Maidir leis an lucht leanúna fuaraithe rialaithe go leictreonach, tá na modhanna rialaithe a úsáideann samhlacha éagsúla difriúil. Seo a leanas meascán de dhá shampla locht chun prionsabal oibre agus fabhtcheartú an dá mhodh rialaithe lucht leanúna leictreonacha coitianta a thuiscint.
Example 1 A car with a displacement of V62.4L, the cooling system of the car is "opened" because the electronic fan does not turn, and the electronic fan still cannot run when the air conditioner is turned on. The control of the radiator fan of this Audi car is realized by controlling the ground wire of the fan relay through the dual temperature thermal switch. There are two electronic fans in the cooling fan system of the car. The red wire in their connection harness is the positive wire, the brown wire is the ground wire (directly fixed on the beam), and the red positive wire is a positive wire on the right beam. fixed at the column.
The control of the red positive line is divided into fan low-speed relay, air-conditioning relay and fan high-speed relay control. Pay attention to their specific positions during maintenance. The fan low-speed relay is located in the third relay position in the fuse box on the right side of the engine, and the fan high-speed relay is installed in the No. 217 relay in the auxiliary fuse box under the driver's feet. The low and high speed of the fan The operation is realized by the dual temperature thermal switch on the radiator, which controls the grounding of the relay according to the temperature of the coolant.
Nuair a bhíonn an lasc oiriúntóra aer ar siúl, tá an sealaíochta lucht leanúna íseal-luas á rialú ag an sealaíochta lucht leanúna an oiriúntóra aer chun an lucht leanúna fuaraithe a rothlú. Tá an sreang talún (sreang glas/buí) den sealaíocht Uimh. 217 ceangailte leis an lasc teirmeach dé-teocht. Nuair a ardóidh an teocht chuisnithe go teocht áirithe, rialaíonn an lasc teirmeach dé-teocht an sealaíocht go talamh, agus cuirfidh an lucht leanúna fuaraithe isteach i stát oibríochta ardluais. Ina theannta sin, tá an príomh-sreang beo agus sreang beo rialaithe de sealaíochta Uimh. 217 briste go léir nuair a bhíonn an lasc adhainte ar siúl?
According to the working principle of the cooling fan system of the car, it is found that the car lacks a fan low-speed relay (the user reported that the car has been repaired in other repair shops). But after it is installed, the cooling fan has only high-speed gear and no low-speed gear. After careful inspection, it was found that the No. 217 relay was burned, causing the cooling fan to always run at a high speed. After the No. 217 relay was replaced, the fault disappeared. Example 2 In a Samsung Jielong car, the water temperature gauge shows normal temperature during driving, but if the engine is stopped and the engine is running at idle speed, although the water temperature gauge shows between 90-100 degree , the cooling system has been "opened" at this time. At this time, it was found that the cooling fan could not operate at all. The control method of the cooling fan of this car is very different from that of the Audi car. This Samsung Jielong car cooling fan is controlled by the car computer. After inspection, the cooling fan relay lacks the control ground wire. When the engine is running at idle speed, the actual temperature of the coolant is measured with a thermometer and has reached 110 degree , but the water temperature gauge of the car still indicates between 90-100 degree . Using a multimeter to measure the resistance of the water temperature sensing plug is about 100 ohms. Therefore, it is initially suspected that the water temperature sensing plug is damaged.
In éagmais páirteanna athsholáthair, faigh friotóir athróg sleamhnáin 2k ohm i gcomhthreo leis an breiseán braite teocht an uisce chun an luach friotaíochta a laghdú. Má dhéantar an friotóir athróg sleamhnáin a choigeartú ag an am seo, ionas go mbeidh an teocht a thaispeánann an tomhas teocht an uisce comhsheasmhach le teocht iarbhír an chuisnithe, oibríonn an lucht leanúna fuaraithe de ghnáth leis an méadú ar an teocht.
Dealraíonn sé gurb é an chúis atá leis an mífheidhmiú breiseán braiteoir teocht an uisce. Toisc go ndéantar damáiste don breiseán braite teocht an uisce, tugann sé comhartha earráide teocht íseal don ríomhaire carr i gcónaí nach féidir an lucht leanúna fuaraithe a oibriú. Ar ndóigh, ní féidir leis an lucht leanúna fuaraithe oibriú de ghnáth. Ar deireadh, tar éis an breiseán braite teocht an uisce a athsholáthar, d'fhill an carr ar ais go gnáth.
Is féidir a fheiceáil go bhfaigheann ríomhaire an ghluaisteáin seo comhartha ionchuir an breiseán braiteoir teocht an uisce, agus nuair a shroicheann an teocht an uisce an luach sonraithe, rialaíonn an ríomhaire sreang talún an sealaíochta lucht leanúna go talamh chun an lucht leanúna fuaraithe a reáchtáil. Tá dhá mhodh rialaithe go hiomlán difriúil ag an méid thuas, ach chomh fada agus a dhéanaimid amach a bprionsabal oibre agus iniúchadh cúramach agus anailís a dhéanamh ar an locht, is féidir an fhadhb sa réimse seo a réiteach go tapa freisin.
https://www.jonyautoparts.com/car-fuaraithe-fan/
