As you press the ignition key, the battery activates and transfers power to the solenoid.The solenoid further transfers power to the starter motor. When the starter motor gets power, it pushes the pinion gears forward to mesh with the engine flywheel. The flywheel is connected to the crankshaft of t Contact online >>
As you press the ignition key, the battery activates and transfers power to the solenoid.
The solenoid further transfers power to the starter motor. When the starter motor gets power, it pushes the pinion gears forward to mesh with the engine flywheel. The flywheel is connected to the crankshaft of the engine.
As the motor turns, the flywheel also turns, which further turns the crankshaft of the engine. When the crankshaft turns, the engine starts, and the combustion process of the air-fuel mixture starts. As the combustion process starts, the motor stops, and the engine further gets power through the combustion of the air-fuel mixture.
Parts of Starter
The starter motor has the following parts:CommutatorArmatureBrushesLever ForkPiston or PlungerSolenoidField CoilsPinion1) Commutator
It is an electrical switch that periodically reverses the current between the external circuit and the motor. The commutator consists of two plates attached to an armature shaft. These plates ensure proper connection for the coils of the electromagnet.2) Armature
The armature is one of the parts of the starter. It is installed on the bearing or driveshaft for a guide. The armature consists of a laminated soft iron core. Multiple conductor windings or loops use to cover this core.
Read More: Piston Working and Types6) Solenoid
The solenoid or electromagnet has two coils wound around an iron core. It acts as a switch to start and stop the electricity flow between the car battery and the starter motor.7) Field Coils
The field coils are installed inside the casing of the starter motor. The motor has two or more coils connected in series.
As the coils get electricity from the battery, they convert it into an electromagnet and rotate the armature. When the armature rotates, the magnetic field is produced around the armature.
The planetary gear starter motor contains three plenary carrier gears and one sun gear. The sun gear installs at the armature end while the plenary gears install within the ring gear and held stationary.2) Direct Drive (DD) Starter Motor
It is one of the most famous and oldest types of starters in the market. The working of the direct drive is simple as other types. It is a solenoid-operated device. There are multiple designs of direct drive starters available in the market.
The solenoid is directly connected to the vehicle battery. As you press the ignition switch, the solenoid receives power from the vehicle battery.
The 12V solenoid of the starter has three terminals and heavy-duty construction to reduce the current requirement. This type doesn''t contain a field coil. Therefore, the brush and commutator transmit power directly to the armature.
They start the engine powerfully and very quickly. They are best suitable for high speeds. The weight linked to the torque capacity of the starter motor is very low.5) Off-Set Gear Reduction (OSGR)
These types of starter motors operate at low currents and high speeds. Off-set gear reduction starters have a lightweight, easy assembly, and compact design. They are most commonly used on 4WD vehicles because they increase starting torque.
The lifespan of a starter motor depends on the vehicle model and how you maintain it. However, you can expect to get about100,000 milesout of the factory starter.
Do you know cranking the starter motor continuously for a long time without taking a break, is extremely dangerous to the health of the starter?
It is because it is designed to operate only for a few seconds. Since an internal combustion engine can not start itself, it needs an external force to get it up to minimal RPM to run smoothly without help. Definitely, a starter does this job.
A starter motor is an electrical device, used to crank the engine. The Starter motor is one of the most crucial parts that make the starting system.
On this page, you will find useful, effective, and practical information and tips about starters. Here you will find eleven parts of a starter motor, functions, working operations, types, and many more things explained in easily understandable language backed by science.
The vehicle starter motor is the primary starter system component that cranks the engine; we people mistakenly think that the starter motor is the collection of the solenoid and motor body, but that is not true.
The solenoid is not a starter motor; it is part of the starter motor assembly that acts as a bigger starter relay. You can say it is the "Accessory" placed on top of the starter motor body. The starter consists of a starter motor and solenoid. The real starter motor unit is the main bigger cylindrical component below the solenoid, while the solenoid is situated on top of the motor starter.
This was a little misconception some people get, I wanted to clear. Now here is the definition.
The vehicle''s electric starter motor (also called the starter, self-starter, or cranking motor) is a device that converts electrical energy into mechanical (Rotational) energy in the internal combustion engine to crank the engine. It is mounted on the back of the engine casing or in the front of the transmission housing and was invented in 1911 by Charles F. Kettering. The starter motor or cranking motor is a powerful electric motor; it consumes a lot of currents to start the engine.
All Internal Combustion engines need some external help to get moving. You have to turn the engine for the first two strokes intake and compression strokes until the power stroke reaches and that is because the third stroke produces the power.
Once the power is generated, then the engine is able to run the four-stroke cycle itself through inertia. The ignition switch sends the power to the starter motor which cranks the engine until it runs without help. And so, there is no need for a starting motor when the engine has started. It is only required for the first cycle to start.
A Starter motor is an electric motor that turns over the engine. Several parts are used in the construction of the motor. The motor assembly is the collection of many parts together all parts create a powerful motor. It consists of the armature, commutator, brushes, pinion gear, overrunning clutch, field coil or permanent magnet, and planetary gear set.
An armature is placed inside the permanent magnet or field coils to produce electromagnetic force. At one end of the armature shaft the pinion gear, overrunning clutch, and planetary gear set are installed. At the other end of the armature shaft, the commutator is installed which connects with the brush to create an electrical path for the armature.
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The starter motor working principle is based upon converting electrical energy into mechanical energy to make the engine run. It works on the principle of electromagnetism. When the ignition switch is activated, the current flows from the ignition switch to the starter motor, supplying current to the motor. It passes on the path of brushes to the commutator and then to the armature windings.
This armature winding creates a strong electromagnetic field that interacts with the magnetic field of a permanent magnet or field coil and causes the rotation of the armature shaft. While the armature rotation is being produced, at the same time solenoid pushes the starter gear forward to mesh with the flywheel. And the armature rotation is transferred to the flywheel ring gear via the pinion gear.
A planetary gear set increases the torque of the pinion gear. However, when the engine runs on its own power and its speed increases the speed of the pinion gear, the overrunning clutch disengages by slipping the pinion gear and protects the starter from overspeeding. Lastly, when the engine starts, the driver releases the key, and the current is cut off from the starter.
Related Post: How To Wire A Starter Solenoid In 5 Min (With Diagram)
A solenoid is an electromagnetic switch that connects and disconnects the battery to the starter motor. It is a small cylinder bolted on top of the motor assembly. The solenoid gear pushes the pinion gear forward to engage with the engine flywheel.
A solenoid acts as a huge switch, used to turn ON and Off the starter assembly. The solenoid acts as a bigger switch to make the connection and connects the starter motor car battery. It uses a small amount of current to turn on a bigger current. It acts as a huge bigger relay that controls a heavy-duty circuit. The function of the solenoid is to quickly turn ON and OFF the motor to protect it from damage.
The solenoid has three terminals at the back of the solenoid cap. One terminal is for the ignition switch to turn ON-OFF the solenoid, and two terminals are for the input and output battery positive power source.
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In this section, we will discuss the 11 complete and detailed parts of starter motor, its functions, and its working.
About Commutator starter motor
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