How Does A Car Starter Work Diagram

Once the ignition switch is turned it closes the contactor or electrical connection sending voltage to the starter of the component.

How does a car starter work diagram. A typical starter solenoid has one small connector for the starter control wire the white connector in the photo and two large terminals. The starter generator initially engages because of the direct current voltage sent from the battery of the vehicle or equipment. If the car failed to start the starter handle could be used to wind up the spring for a further attempt. One of the innovations on the first dodge car the model 30 35 at its introduction in 1914 was an electric starter and electric lighting with a 12 volt system against the six volts that was usual at the time as a standard fitment on what was a relatively low priced car.

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. The colour coding however is a useful guide to tracing wiring. The clutch pressure plate is bolted to it and the clutch disk is sandwiched between them. This pushes out a rod to which the pinion gear is attached.

After voltage gets sent to the starter the component acts as a small motor. The electrical system that controls the starter motor is comprised of an ignition switch neutral safety switch automatic transmissions only clutch safety switch manual transmissions only battery battery cables anti theft system computer key fob and the starter itself. One for the positive battery cable and the other for the thick wire that powers the starter motor itself see the diagram below. Like most other motorized or powerful electric devices on your car the starter doesn t draw its power directly from the switch used to trigger it.

To avoid confusion each wire is colour coded but only within the car. Technically explained the flywheel if manual or flex plate if automatic transmission is defined as a disc that is bolted to the crankshaft at the rear of the engine it serves many purposes. A starter solenoid acts as a heavy duty power relay to begin the starter motor operation. Instead the ignition switch triggers a sort of secondary switch known as a relay or in the case of a starter the solenoid.

The powerful electric starter motor does the turning. When you start the car by turning the key several parts are set into motion. When you turn the ignition switch the starter motor is energized and the electromagnet inside the body engages. Its shaft carries a small pinion gear wheel which engages with a large gear ring around the rim of the engine flywheel.

In a front engine layout the starter is mounted low down near the back of the engine. A complex network of wires runs through the car. The gear meets the flywheel and the starter. On a manual transmission car it gives one of the friction surfaces for the clutch.

When the key is turned the starter motor turns the engine over which means it turns the crankshaft which in turn gets the pistons moving in the cylinders. The starter solenoid works as a powerful electric relay. Most car handbooks and service manuals include a wiring diagram which can be difficult to follow. To make an engine start it must be turned at some speed so that it sucks fuel and air into the cylinders and compresses it.