A starter, as the name implies, is the electrical motor that forms part of your vehicle's ignition system. It is where electrical energy is converted into mechanical energy and is crucial to start the engine. It has different parts, the two major parts of which are the rotating armature and the electromagnetic field. Since the Porsche starter has a crucial role to play when starting the engine, it pays to know the most sensitive parts of this component.
#1 - Electromagnetic Field
The starter's housing is the field frame. An essential component is known since it holds the starter fields inside this frame. Screws are used to hold these parts together. All in all, cars have about two to four field coils which are connected in a series. The coils are energized by the battery which then turns into an electromagnet thus forcing the rotating armature to turn.
# 2- Rotating Armature
The rotating armature is mounted on shaft and bearings for support. This component is made out of soft, laminated iron core that has been wrapped using several conductor windings or loops. There are commutator bars found at the conductor ends of the shaft. This comes with a part called carbon copper brushes too which are held against commutator bars and are responsible for transferring voltage as well as making an electrical contact between the armature and the field frame.
As current flows through the commutator bars and windings, the magnetic field is created thus rotating the armature. The force transferred to the armature will then be transferred to the drive mechanism of the starter thus cranking up the car engine and signaling it to start.
# 3 - Solenoid
The starter also has another sensitive part, the solenoid. This has two coils of wire which are wrapped around the movable core. The solenoid is actually the switch that connects the starter's motor to that of the battery. It does that by closing the electrical circuit of the starter.
Once a key has been inserted in the car's ignition and has been turned to the start position, current flow is opened from the battery going through the solenoid's neutral switch. The solenoid also relies on a plunger which is capable of either pulling or pushing the shift fork, a component attached to the drive gear in the starter. The shift fork therefore plays a crucial role as it engages the starter gear.
# 4 – Starter Drive Gear
Once the shift fork has signaled the starter gear to engage, the latter will then signal the ring gear to engage with that of the flywheel in the engine. The flywheel is basically connected to the crankshaft and is responsible in moving cylinder pistons thus eventually starting the engine.
These four are among the most sensitive parts of the starter. They have to work together in order to make sure the starter assembly will be able to perform its job. The malfunction or absence of any of this part will create a problem that will lead to problems when starting the engine.