1J0959481A is the Ref No. numbers of temperature control switch,The detailed information of 1J0959481A is as follows:
Name:temperature control switch /3P
Ref No.:1J0959481A
Applicable models of 1J0959481A
Skoda: CIT12-/FAB00-10/OCT97-13/RAP12-/RO06-11
VW: BE99-10/BO99-05/CA04-/FO04-12/GO98-/JE06-/PHAE02-07/PO02-/TOU03-10/TOUA03-10/UP12-
SEAT: ALT07-14/CO03-09/IB02-13/LE00-13/TO99-13
Audi: A1 11-/A3 97-13/ATT99-06
What is the working process of a temperature control switch on a car?
The water temperature control switch uses a high-grade dish-shape bimetal strip of a renowned foreign brand as the temperature sampling element. It is installed on a sensitive point of the radiator in order to collect water temperature change signals in the radiator dynamically. Since the dish bimetal strip is able to deform under high temperature and jump transiently, working in conjunction with an actuation mechanism, it can connect two contact points rapidly and start the fan to cool the water in the radiator. It therefore plays a protective role for the safety of the automotive engine.
Working process of a temperature control switch on a car
It consists of a wax temperature-sensing driving element and a two-contact actuator mechanism. When heated, the wax changes from solid to liquid and expands rapidly, thus moving the push rod and controlling opening/closing of the contracts. With rising temperature of the liquid coolant, the wax starts to expand, drives the push rod via the rubber seal film, and presses down the tension spring frame. When the coolant temperature reaches 95℃, the low-speed contact point will close, and as a result the radiator motor fan will be powered on, starting to run at a low speed of 1600 r∕min.
When the coolant temperature reaches 105℃, the high-speed contact will close due to rapid expansion of the wax. This will cause the radiator motor fan to rotate at a high speed of 2400 r∕min for faster cooling. When the coolant temperature drops, the wax will shrink, and the push rod will retreat under the pull force of the contact, thus breaking the contact. In this way, the radiator motor fan is controlled.
