2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42
Don't underestimate the role of the thermostat, an important engine accessory. This concept refers to a mechanical type valve, the "mission" of which is to regulate the coolant.
Its priority advantage, conceived by the developers: the opening temperature of the thermostat prevents overheating of the "fiery heart" of the car in order to avoid costly repairs and to ensure full safety on the road.
About installation details
A device is mounted at the top of the engine in the area where the coolant exits into the radiator device. It contributes to the rapid warming up of the vehicle, holding back cooling until the engine reaches an elevated temperature. The essence of the device lies in three elements: a cylinder, a pin, and wax. The scheme of such a state has been used for a long time, without undergoing special modernization, including in new brands of cars. As a result, engine parts do not wear out.ahead of time, their dynamic performance improves.
A little about functioning
The make of the machine dictates the type of thermostat used. All of them can be configured in different ways. Therefore, from the characteristics, the most important thing is what thermostat opening temperature is determined by the manufacturer.
The brand of the device is indicated on its body. It can be installed not only in the motor block, but also in a place specially designated for it. The operation of the valve is based on the melting of wax placed in a cylinder-shaped hole towards the power section. Depending on the brand, the opening temperature of the thermostat valve may vary.
In the design, the temperature parameter reaches 80 degrees, the wax expands its area, squeezing out the cylinder lock pin. The result is the unlocking of the system and the action of the coolant.
About types of thermostats
Models differ in cost and principle of operation.
The products of the German automotive industry have become very popular on the market, but they are characterized by a high price. Domestic units have got used to the design of modern cars of any brand, but sometimes they fail ahead of time. In general, since 2006, the production of thermostats in Russia has been discontinued. The former products of "Stato" are found, but today the plant has been reconstructed in "Pramo". He repackages Chinese thermostats and sends them to the car market under his own brand name. Similarother “native” enterprises also chose the work algorithm. The Elekton company operating in the Vladimir region can be considered with increased quality control.
Drivers are more interested in universal variations. What types are on the market?
- Single-valve version with valve disc and thermostatic element. It is classified as in demand, thanks to the ability to mount it on different cars. It is sometimes unable to satisfy all the needs of the engine, but it does an excellent job of working on propulsion systems from the UMP enterprise.
- The advantage of a two-stage device is the presence of two valves. Today, manufacturers offer improved features.
- A progressive idea of engineers, successfully implemented in life, is an electronic thermostat. Thanks to the advanced ability to regulate the opening and closing of the valve, the engine can operate in different modes. This results in reduced fuel consumption, less engine wear, and facilitates easy handling in difficult road conditions. The model is suitable for foreign cars, cars of the last ten years, with a good on-board computer and with the option of thermostat control. High accuracy of work, the possibility of manual and automatic adjustment add pluses to the "treasury" of worthy development moments.
On some models of cars, both options are installed, subject to the operation of a powerful engine, as in KamAZ trucks. Sometimes three products are used at once.
Learning program on thermostatic fillers
How does filler affect functionality?
The serviceability of a node is dictated by its qualitative properties and features.
- Liquid filler has not been used on Russian vehicles since 1983, so there is no point in writing about it.
- Models with wax content allow the “steel horse” to successfully cruise over different distances. They are suitable for products of the Russian and foreign automotive industry. The basis of the models is ceresin - a wax of a special nature. It is complemented by copper powder, enclosed in a brass or copper cylinder. During engine operation, the cylinder heats up and the temperature of the wax rises. When the latter expands, the coolant comes into action. When the temperature drops, the wax returns to its original shape. In this case, the spring is unclenched and the passage in the thermostat is blocked. The liquid first goes in a smaller circle, then runs to the pump and into the coolant system. On VAZs, the operation of the thermostat has a number of features. So, the opening temperature of the thermostat on the "Grant" is the traditional 80-90 degrees.
Features of thermostats on VAZ
The two-valve device with wax content is installed in these cars. At the same time, the opening temperature of the Kalina thermostat is 90 0С. Before the motor heats up, the liquid has time to go through a small circle. The fluid then circulates to the pump section. At the same time, it passes through"shirt" intake, carburetor chamber for mixing. When the interior heating is turned on, the liquid also has to pass through the radiator.
What happens when the motor is not fully heated? Partial opening of the main valve and incomplete closing of the second. As a result, a certain portion moves to the radiator. Such a mechanism will warm up the power unit faster. The valve will open completely when the thermostat opening temperature at the VAZ is 90 degrees.
About the causes of possible breakdowns
Any spare part is subject to wear and tear. A common cause of fluid failure to circulate is considered to be corrosion, spoiling the surface of the cylinder. Auto mechanics advise replacing the part once every two years. Poor-quality antifreeze leads to a violation of the tightness of the body where the wax is placed. As a result, the friction force of the rod increases. A long delay of the power unit at idle for more than 10 minutes leads to an early failure of this working part. What do experts advise to reduce the risk of damage?
Expert opinion
Drivers of "VAZ" horses are recommended timely diagnostics. Considering that the opening temperature of the thermostat in the VAZ-2110 is 80 0С, you can check its condition as follows.
- The launch should not be delayed: 7 minutes is the optimal time period. Next, open the hood and touch the lower pipe. When properly positioned, the hoses must be at the same temperature. The difference indicatesmalfunction. The main thing is to prevent the appearance of air jams, their consequence will be overheating and the need for urgent replacement.
- When starting the engine, you need to touch the tube leading to the coolant. In the normal state, it is cold until the engine warms up to the desired condition.
- Complex diagnostic methods include dismantling the system and dipping it into a heated liquid. The "pan" method can only characterize the operating state of the thermostat, without identifying problems.
To determine the desired parameters of the thermostat, suitable for a particular "iron horse", you have to take into account the temperature of the valve opening. Therefore, it is better to go to a specialized car shop.
Typical symptoms of failure
Motorists may notice problems with this unit by the following signs.
- Motor heats up too fast.
- The temperature rises to normal for too long.
- During the trip, the motor needle goes down, it is observed to rise when braking.
To detect defects, it is recommended to monitor all the parameters of each part, to arrive on time for professional diagnostics. A computer technique will help to identify the slightest problems in the early stages, preventing the replacement of the device and extending the life of your favorite “swallow”. It is worth listening to the recommendations of specialists in service centers, contacting serious auto repair shops with a license, good material and technical base, experiencedmasters who understand the intricacies of technical devices.
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