Which type of pinion moves away from the starting motor to engage the flywheel?

In the outboard type pinion moves away from the starting motor to engage the flywheel whereas in the inboard type it moves towards the starting motor. 2.

What is the pinion on a starter?

Starter ring gears are attached to either the flywheel or the flexplate of an engine. The teeth of the ring gear are driven by the smaller gear (known as the pinion) of the starter motor. The pinion engages the starter ring only during starting and once the engine is running the pinion withdraws.

What is Bendix drive mechanism?

A Bendix drive is a type of engagement mechanism used in starter motors of internal combustion engines. The device allows the pinion gear of the starter motor to engage or disengage the ring gear automatically when the starter is powered or when the engine fires, respectively.

Which part of the engine engages with starter motor pinion?

When the starter motor is activated the pinion moves along the shaft until it comes into contact with the toothed ring-gear. The pinion interlocks with the ring-gear before rotating to crank the engine. As the engine gets up to speed the pre-engaged starter motor is protected from overspeed by a free wheel clutch.

How is the lever activated to engage the pinion gear?

The lever fork is attached to one end of the plunger. When the plunger moves into the solenoid core, the lever fork pushes out the pinion gear to mesh with the flywheel ring gear.

What is a flywheel ring gear?

The flywheel ring gear is a carbon steel ring with teeth fitted to the flywheel that is engaged by the starter gear to transfer torque and begin the engine cycle.

How does a starter engage the flywheel?

When you turn the ignition on, the starter motor engages and turns the engine over allowing it to suck in air. The pinion meets the flywheel and the starter motor turns. This spins the engine over, sucking in air (as well as fuel). As the engine turns over, the starter motor disengages, and the electromagnet stops.

Does the starter turn the flywheel?

On the starter, there’s a gear designed to fit into the grooves of the ring gear (the starter gear is called a pinion gear). This pushes out a rod to which the pinion gear is attached. The gear meets the flywheel, and the starter turns. This spins the engine over, sucking in air (as well as fuel).

How does a starter Bendix work?

The Bendix system places the starter drive pinion on a helical drive spring. When the starter motor begins turning, the inertia of the drive pinion assembly causes it to wind the spring forcing the length of the spring to change, and allowing the pinion to engage with the ring gear.

What are the two types of Bendix drives?

Explanation: Inboard and outboard are the two types of Bendix drives. In the outboard type pinion moves away from the starting motor to engage the flywheel whereas in the inboard type it moves towards the starting motor.

What is the drive mechanism of a starter motor?

Starter motor drive mechanism by Mr. P. Karthik selvan, AP 2. • The starting motor is located near the flywheel .The drive gear on the starter is arranged so that it can mesh with the teeth on the flywheel (or the ring gear) when the starting switch is closed.

What is the purpose of a starter flywheel?

It is a flywheel with external peripheral teeth for a starter motor to engage in and crank the engine. Or it is a flywheel with starter coils arranged in it to crank the engine, usually as part of a generator/starter system on a hybrid/electric vehicle engine.

What is the gear ratio between the driven pinion and flywheel?

(The gear ratio between the driven pinion and the flywheel is usually about 15 to 1. This means that the starting motor rotates 15 times as fast as the engine, or at 1500 rpm to turn the engine at a speed of 100 rpm.) 3. • The drive mechanism must disengage the pinion from the flywheel immediately after the engine starts.

What causes the pinion on a starter motor to bind up?

The pinion on the starter motor which engages the flywheel is spring loaded and mounted on a spiral. It is designed to retract when the car starts and the flywheel speeds up the pinion. Anything which causes the pinion to bind up will cause your problem.