As a result, more and more manufacturers are incorporating an electronic thermostat control in their final products, increasing their durability and precision.

Keep reading to find out more about the MAP-controlled thermostat and its main benefits.

Map Controlled vs Conventional temperature regulation

Depending on the application and technology of the combustion engine, thermostats must exhibit different functional characteristics and ways of functioning.

To increase engine efficiency, a new electronically controlled thermostat technology was developed. This type of thermostat can be understood as an improvement on conventional thermostats, characterized by a wider working range.

An electrically controlled thermostat (MAP) works in the same way and has the same mechanical structure as a conventional thermostat, but its main difference is that the map-controlled thermostat also works at a higher engine temperature.

It also complements the conventional regulation of the cooling circuit by means of an electrically controlled integrated heating element that is activated on demand. Consequently, the thermostat can influence the temperature considerably faster.

As such, the result is a higher and more precise influence of the thermostat on engine temperature, which adjusts to particular engine conditions and needs, all while meeting optimum temperature ranges.

All in all, while the function of map-controlled thermostats is the same as conventional thermostats, they provide a series of unmatched benefits: 

• Stabilize engines even at higher temperatures.
• Greater and more instant power responses.
• Optimized combustions, regardless of coolant temperatures.
• Minimized emissions and pollution, thanks to better combustions.
• Less fuel consumptions, as engine viscosity is reduced and so are frictional losses.
• Enhanced interior heating in cars and higher user comfort.

This improved regulation of the cooling system helps manufacturers meet increasing pressures to minimize pollution and increase engine efficiencies.

Related content: Official unboxing of the new Dolz’s automotive thermostats

How a map-controlled thermostat works

(MAP) Controlled Thermostats are controlled by the engine’s Electronic Control Unit (ECU).

Traditional versions incorporated a wax component to act as an expansion and heating element. When temperatures rise, this wax component increases its size and starts a moving system where pistons are in charge of increasing flow volumes in the coolant liquid. What map-controlled thermostats do is integrate an electrical interface and heating coil in the equation, which are in charge of connecting the expansion element to the heating. 

During standard operations, the map controlled thermostat works the same way as conventional ones, only they allow higher engine temperatures. 

Additionally, when sensors detect an expanded need based on the engine’s loads, the thermostat opens accordingly. This can happen when the control system for the powertrain detects a higher engine load, a faster vehicle speed or the activation of the sport mode. In that case, the wax element will quickly open up the thermostat to its maximum position thanks to heating, and coolant temperatures will be able to be lowered.

Thus, while map-controlled thermostats also employ expanding wax, they are able to better control the temperature of said wax, doing so in a faster manner. The result is an engine that performs efficiently at multiple load and operating conditions.

Advantages of map-controlled thermostats in the aftermarket

The main benefit of this type of thermostat is the ability to open the thermostat before the coolant reaches too high an operating temperature. To do this, the engine’s control unit will activate it before the coolant reaches a certain temperature. This fact becomes very useful when the vehicle is under certain conditions, such as the sport mode.

Map-controlled thermostats not only generate less pollution and greater engine efficiencies: they’re also extremely durable, they don’t present natural wear and perform without required service or maintenance. In other words, they can last for the entire service life of an engine.

Article of interest: 5 thermostat failure symptoms and how to avoid them

However, improper practices or factors such as the use of low-quality coolant can cause damage to the part. At Dolz, we remind you of the importance of the cooling system, and we always recommend that when replacing the water pump or bleeding the cooling system, you check how to test a thermostat in a car. This ensures that all components are functioning well, preventing engine overheating and possible future breakdowns.

DOLZ thermostats for a perfect temperature and flow

As the independent aftermarket industry evolves and navigates increasingly complex conditions and requirements, the challenge to find a suitable manufacturer and supplier is more important than ever.

Keep reading: Thermostat: Discover its key elements

At Industrias Dolz we work with the firm commitment to guarantee the supply of high-quality spare parts for both transmission and the vehicle’s cooling, including the electronically controlled thermostat.

Highlighting our products for:

• Use of premium materials that improve durability and reduce maintenance needs.
• Quality production processes and in-house production …All in Dolz.
• A constant investment in innovation through our dedicated R&D department.
• Decades-long experience in the aftermarket sector. Manufacturing since 1934

For further information on any of our product lines, receive commercial information or technical product specifications (including assembly notes), plese please contact us and our team will help you.

La entrada Map-Controlled Thermostat: How It Works & What Are Its Benefits? se publicó primero en Industrias Dolz.

La entrada The importance of an automotive thermostat in a car’s cooling system se publicó primero en Industrias Dolz.

In today’s article we get to know its simple but necessary mechanism and discover its key elements of this small component.

Operation and types of thermostats

Among the main functions of the thermostat are to accelerate engine warm-up blocking cooling and to regulate the temperature by opening and closing its mechanism in response to specific changes in coolant temperature to keep the engine’s temperature.

For this, there are different kinds of thermostats depending on the vehicle application. And its mechanism differs from each other.

• Conventional thermostat

Formed by a spring, this kind of thermostats are characterized by containing alcohol inside and thus actuate their mechanism by the volatility and not through the expansion of a liquid.

When the cooling liquid reaches a high temperature, there is a liquid-vapour transition that expands the spring.

• Wax-type thermostat

Its main element is an encapsulated wax, thermally expansive and in contact with the cooling liquid. Its mechanism is based on expansion.

Upon reaching a specific temperature, this wax melts and expands the capsule, opening the valve that gives way to the cooling liquid. As it cools, it contracts again, closing the mechanism.

• Map-controlled thermostat

Controlled by the engine’s electronic control unit (ECU), these thermostats operate their mechanism based on the engine’s loads.

This kind of thermostat allows some benefits like reduced fuel consumption and lower pollution emissions by improving engine efficiency.

Related content: Video Unboxing: new Dolz’s thermostats

Key elements of a thermostat

The basic parts of a thermostat are:

• Frame and Housing: includes a valve attached to the piston.
• Flange: located in the body.
• Spring: keeps the valve closed when the coolant is not hot.
• Wax element: thermostat core.

To avoid entrapment of air and hot spots, many thermostats have a jiggle pin or check valve that allows trapped air in the cooling system to pass through the thermostat and be released.

Failing thermostats

Among the thermostat failure symptoms are those related to stuck. This could be:

• Stuck in the open position of the thermostat.

In this case, overcooled engine runs inefficiently. It means, it is not capable of storing the coolant to bring it to the optimum temperature, which also generates higher fuel consumption.

• Stuck in the closed position of the thermostat.

Due to the blockage of the coolant circulation, the coolant is not able to reach the radiator so causes the engine to overheat. This can lead to damage to the damage to cylinder-head gaskets.

Discover the Dolz Thermostat Range

With a constantly extension range, all Dolz thermostats are equivalent to OE quality.

All our thermostats are integrated thermostats that adjust the coolant flow towards the radiator, deciding when and how heat is added. Most of our thermostats are map-controlled. We also have thermostats attached to the water pump and can be purchased in kit format.

Dolz, your safety choice

La entrada Thermostat: Discover its key elements se publicó primero en Industrias Dolz.