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Toyota Radiator Fan Motor

Toyota Radiator Fan Motor

What is Toyota Radiator Fan Motor?

 

 

A toyota radiator fan motor is the device that moves air through the radiator core to cause a cooling effect. When the engine is running, it produces a lot of heat. The heat can exceed the temperature levels of the engine if unchecked. If that happened, several components would get damaged, most of them permanently. An overheated engine could also ruin the radiator.

 

Advantages of Radiator Fan Motor

Cooling the engine

The motor is responsible for turning the fan blades, which are responsible for drawing cool air into the radiator and exhausting hot air from the engine compartment. In this way, the engine can be cooled and kept from overheating.

Regulating engine temperature

The radiator cooling fan motor is controlled by a temperature sensor that detects the engine’s temperature and sends a signal to the car’s computer. The computer then activates the motor, which turns on the fan blades to cool the engine.

Preventing engine damage

An engine that is overheated can suffer serious damage, such as warped cylinders or a cracked engine block. In order to prevent engine damage, the radiator cooling fan motor is responsible for keeping the engine at a safe operating temperature.

 

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How does a Radiator Fan Work

 

 

The radiator fan purpose is to blow air through the radiator and remove heat from the coolant. The engine produces a lot of heat, which must be removed to prevent damage. Most engines have coolant circulating and transferring the heat to the radiator. Inside the radiator, the coolant loses the heat to air.

The air to cool the radiator comes from outside and flows freely through the grille. However, that happens when the vehicle speed is above 25 mph. Less than that, and the airflow reduces dramatically. That’s where the radiator fan comes in. It helps to provide airflow during times when your car is moving too slowly or when the engine is idling.

How a radiator fan works depends on the type. An electric fan works differently from the mechanical type. To help you understand the operation of both, we will look at their working separately.

Mechanical Radiator fan- a mechanical cooling fan mounts on a crankshaft pulley, most often the water pump pulley. During times when the vehicle is idling or moving at a low speed, the fan comes on to blow air through the radiator. When the speed increases, the fan stops spinning or spins at a lower speed. This happens automatically through the control provided by a clutch. The clutch mechanism works by allowing the expansion of grease to engage the fan and vice versa, based on the engine temperature.

Electric Radiator Fan- an electric cooling fan functions differently. It doesn’t need a clutch, since its switching on and off can be electrically controlled. The fan receives power through a complex wiring system consisting of relay(s), fuse, and cables.

For automatic on and off, electric fans use a temperature switch and coolant temperature sensor. These sensors send signals to the car computer, which then determines when the fan comes on and when it goes off. Modern electric cooling fans come with a dedicated ECU or control module.

An engine cooling fan also operates by either pushing or pulling air through the radiator. Pusher cooling fans are mounted between the radiator and grille. These are less efficient. Puller cooling fans are situated in the space between the radiator and engine. They are more effective and provide better cooling performance.

 

Types of Toyota Radiator Fan Motor
 

Mechanical radiator cooling fan
Mechanical radiator cooling fans run off the engine and use a setup of pulleys and belts to connect to the crankshaft. The mechanical fan must only come on when needed, such as when the engine is idling. To enable that, a clutch mechanism ensures it stops spinning at 25mph or higher.

Most mechanical fans incorporate a thermostatic clutch. The clutch disengages the fan when engine temperature lowers to prevent overcooling. Mechanical radiator fans are a dated technology. As a result, they are rarely used in lately produced vehicles. They are still popular with classic models and available on the auto parts market.

Electric radiator cooling fan
Electric radiator cooling fans run independent of the engine. Instead, the vehicle’s electric system powers them. The fans are equipped with 12-volt motors and a control system comprising sensors and control module. The radiator cooling fan controller contains the electronics to operate the device using signals from the sensors.

Because electric radiator fans use electronic controllers, they can be set to start spinning at specific temperature levels. That ensures they only cool the engine when necessary, such as below 25mph. The control system also often incorporates a thermostat to prevent the fan from overcooling the engine.

There are two versions of the electric radiator cooling fan: Push or pull. A push fan is mounted between the grille and radiator core. It works by pushing air through the radiator. Because of its location, the pusher type of radiator fan creates obstruction and does not provide efficient airflow.

The puller type of radiator cooling radiator is mounted in the space between the radiator and the engine. It operates by pulling air through the radiator, unlike the push type, and does not come in the way of the airflow. This masked it more effective than the pusher fan type.

 

How to Choose a Radiator Fan for your Car

As we have seen, there are many variations of the radiator cooling fan today. Many motorists also modify car engines and change their cooling requirements. When selecting a radiator fan, weigh the available options against the needs of your specific engine. The tips below will help you find the best radiator fan for your situation.

Mechanical or electric
The first question to ask yourself is whether you need a mechanical or electric radiator cooling fan. Mechanical fans are further classified as clutch or flex type. Generally, you should go for a cooling fan that replaces the older one, unless if considering to upgrade to a better fan. Choose a mechanical fan for stock or slightly modified engine and electric for high horsepower or highly modified engine.

Single or dual fan
Most engines will do with a single fan. If you have installed a larger engine, added a turbo charger or supercharger and other modifications, a dual setup is better than a single fan. You need more air, which one fan may not produce. If considering a dual cooling fan configuration, ensure you have enough space. Some car will only have enough room for one fan. Dual configurations are also normally possible with electric radiator fans.

Push or puller fan
A radiator fan is usually either a push or puller type. Puller fans are better in many ways. They do not obstruct incoming air when the vehicle is moving, which means more air blowing through the radiator core. They also provide a more effective airflow owing to their position behind the radiator. But you cannot always install a puller fan in your car despite its many advantages. It depends on the availability of space. Ensure you have room between the radiator and the engine before you can consider installing one.

Straight blade or curved blades
One of the main differences in the design of engine cooling is in the style of blades. The blades are normally either straight or curved. Straight blades move more air than curved blades. However, they produce a lot of noise. The curved types are quieter but move less air. When choosing the type of blades, determine what’s more important for your car between airflow and quiet operation. If your engine cooling needs are higher, go for the straight blade. If not, you want to choose the quiet working of the curved blade cooling fan.

Shroud or no shroud
Radiator fans come with either a shroud integrated or without. You can also install one. Shrouded fans offer more benefits. They move air through the radiator core more efficiently, without loss. When the fan contains no shroud, the air movement is less efficient and often leading to an overheated engine. Shrouded fan are more expensive than those without one. Be prepared to pay more for the additional benefits.

 

The Functions of a Toyota Radiator Fan Motor
丰田RAV4.96-00风扇电机OEM 16363-74170
散热器风扇电机丰田大发Calya Asli OEM 168000-2810
丰田卡罗拉 16363-15120 262500-0400 风扇电机 96
风扇电机 268000-2470 丰田 AVANZA 2017

Manual fixed fan
The manual fixed fan is the oldest auto-fan design and comes with a four-blade pattern. The fan get its driving power directly off a pulley, powered by a belt from the crankshaft. It spins constantly, never stopping. Therefore, it draws air, pulling it through the radiator from the outside, during slow and fast speeds. It has no clutch to disengage it, nor does it have a variable pitch feature on its blades.

The thermal sensing clutch fan
The clutch fan is comprised of a disk-like housing that forms the hub of the fan, and sits in front of the water pump. Driven by a pulley (like the manual fan), the insides of the clutch has fluid that produces internal friction that couples with a bi-metallic sensor similar to a thermostat. When the engine rpm has lowered enough, the sensor picks up the signal and engages the clutch, which locks with the fan. The fan will activate much more so at idling and lower speeds. When the car has approached higher speeds where the air has a "ramming" effect on the radiator, the fan shuts off because it does not have to be used. The fan clutch system saves horsepower from the engine by taking away unneeded drag.

Electric fans
Electric fans have their advantages when it comes to small import and compact cars, where size is the main consideration. Small and powerful, multiple electric fans can be mounted either in front of the grill to push air or behind the radiator to pull in air. They can be mounted at off-angles in the engine compartment, so long as they assist in cooling the radiator. Most electric fans come equipped with thermal-sensors that activate the fan when it reaches a hot temperature. They sometimes run after the engine has been shut off to bring the temperature back to normal specifications. Some of the better electric fans can push over 3,000 cubic feet of air per minute and have ten blades.

Flex fans
Flex fans have a light weight construction with a steel hub that supports riveted aluminum alloy blades. The blades have a radical pitch to them, and as the rpm increases the blades begin to flatten out, taking up less air drag and pull on the fan motor. They operate smoother with less noise and vibration than typical blades. The flex fan has gained popularity in the high-performance car and racing circuit.

Centrifugal clutch fan
The centrifugal clutch has to depend upon the speed of the engine to engage or disengage it. As the engine speeds up, the clutch allows the fan to partially slip, giving back that engine the power it would have used if permanently attached. When the speed reduces, the clutch locks into position, which engages the fan. One of the problems here might be with a vehicle stuck in the mud with a high-revving engine, which would trigger a no-fan condition, thus over-heating the engine since the vehicle cannot move through the airstream.

 

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This is basically a 12v dc motor and only used on electric radiator fans. The purpose of the motor is to rotate the blades and cause them to move air. One of the features that vary with cooling fan motor designs is the size and shape. But in spite of these design differences, the motor contains the usual components.

 

A typical radiator fan motor consists of a housing, permanent magnets, armature and commutator held on a shaft, and brushes on an end plate. The assembly is then attached to the fan blade assembly and bolted to the fan frame for support.

 

During operating, the motor receives 12v via cables and connector. The resulting current energizes the coil on the armature, creating a magnetic field that acts against that of the permanent magnets. This causes the armature to rotate, thereby spinning the shaft. The shaft is connected to the blade assembly. Its rotation spins the blades.

 

Our Factory

 

Oubang automobile appliances co., ltd. Is manufacturer of cooling system parts fan motor since 1998, after more than 20 years of development and innovation, the company has developed four series of products and more than 500 hundred of varieties. The products are suitable for all kinds of japanese cars.

 

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FAQ

 

Q: What is the function of the fan motor?

A: The electric fan is a kind of motor that drives the fan blades to rotate, which accelerates the flow of air, improves the heat exchange conditions between the human body and the surrounding air, and achieves the purpose of ventilation and cooling.

Q: How does a radiator fan work?

A: It is sited just in front of the car's radiator, and is electrically powered. A cooling fan in a car is activated by two means – either by the thermostat in the car's cooling system, or by an electronic system that senses when the coolant is too hot and switched on the fan through an electrical relay switch.

Q: What is the use of radiator fan?

A: The radiator fan (or fans) pulls cooling air through the car's radiator. Positioned between the radiator and engine, cooling fans are particularly helpful when the car is stationary or moving at speeds too slow to force air through the grille.

Q: Can I drive without radiator fan?

A: It's not recommended to drive with a cooling fan not working, especially in hot conditions, as it may lead to overheating and engine damage. What activates the radiator fan in a car? The radiator fan in a car is activated by a temperature sensor that detects when the engine needs cooling.

Q: Should radiator fan be running?

A: If the fan is connected to a fan belt, running from the engine, yes it should. If it's an electric fan, no it shouldn't run all the time, only when engine temperature needs it. Direct drive ones do but electric ones are controlled by the temperature of the engine by a temperature sensor.

Q: What happens when the radiator fan stops working?

A: If the fan isn't operating properly, it can lead to overheating fast and stop you in your tracks. Prolonged overheating can also damage engine parts, so it's important to get the problem checked out as quickly as possible.

Q: Why is my radiator fan not working?

A: The most common reasons for a radiator fan not working can be a blown-out fuse, a bad relay, or a broken wire. The faulty coolant temp sensor might also be a reason behind it.

Q: Which motor is used in a cooling fan?

A: Capacitor run and capacitor start single phase induction motor is used in fan. Single phase are not self starting so, use capacitor start to start the fan.

Q: What type of motor is in a fan?

A: In conventional ceiling fans, single phase induction motor is used. These motors consume minimum power and hence, are also known as fractional kilowatt motors. A single phase induction motor requires only one power phase for operating. It converts the electrical energy from the power input into mechanical energy.

Q: What activates the radiator fan?

A: The engine temperature should trigger the fan to turn on. It will also turn the fan off once the engine has cooled to under 200 degrees. You may have heard of a part called the radiator fan switch or temperature fan switch. This is linked to a thermostat and works much like your home's hvac system.

Q: How long does a radiator fan last?

A: The radiator cooling fan is not a scheduled maintenance item. This means that it shouldn't be replaced unless it fails. In most cases, a properly maintained radiator fan will last between eight and ten years. When the radiator fan fails, it should be replaced as soon as possible.

Q: What is the difference between a radiator fan and a car ac fan?

A: The difference is related to the fact that a (vehicle) radiator fan performs the service of removing heat from the engine coolant (no phase change involved), with the aid of a generally high temperature difference between air and coolant, whereas an (home) a/c condenser must remove the far greater heat of condensation.

Q: How often should the radiator fan turn on?

A: There is no set time as the cooling fan works on temperature. If the coolant goes above a set temperature the fan comes on and does not go off until the lower hysterisis set point is reached.

Q: Is it bad to drive with a bad radiator fan?

A: In summary, driving a vehicle with a malfunctioning radiator fan is not safe and can lead to engine damage, decreased performance, breakdowns, and safety hazards.

Q: At what temperature does the radiator fan turn on?

A: In most vehicles, the radiator fan is programmed to turn on when the engine coolant reaches a temperature between 200 and 230 degrees fahrenheit (93 to 110 degrees celsius). However, some vehicles may have different temperature thresholds for the radiator fan to activate.

Q: Is radiator fan repairable?

A: It is possible to repair or replace just the housing of an electric radiator fan, but it depends on the specific make and model of the fan. In some cases, the housing may be designed to be easily removed and replaced, while in other cases it may be more difficult to replace or repair just the housing.

Q: Why is my radiator fan working but engine still overheating?

A: When your cooling fans are operational, but the engine overheats, it may signal a deteriorating radiator. Over time, rust and corrosion can hinder the radiator's ability to facilitate efficient coolant flow, especially during idle periods.

Q: How do you test a radiator fan switch?

A: Testing: Before checking the radiator fan switch it is important that the ignition is switched off and the engine bay has had time to cool down. Once cool, disconnect the switch from the radiator fan, and connect the car battery to the fan motor. If the fan operates this suggests that the fan is not the problem.

Q: Is radiator fan motor ac or dc?

A: Mostly ac motor fans are used because for dc fans we require large ac to dc converters. But dc fans consumes less energy compared to ac fans. In case of computer fans brushless dc motor will use, it produces ac current to drive the fan.

Q: How many types of fan motors are there?

A: Types: Blower motors come in various types, including single-speed, multi-speed, electronically commutated motors (ecms), and permanent split capacitor (psc) motors. Each type offers different speed control and energy efficiency capabilities.

 

As one of the leading toyota radiator fan motor manufacturers and suppliers in China for over 20 years, we warmly welcome you to buy or wholesale high quality toyota radiator fan motor at competitive price from our factory. For customized service, contact us now.

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