Lesson 1:MAJOR COMPONENTS OF a STARTING SYSTEM
Lesson 1:MAJOR COMPONENTS OF a STARTING SYSTEM
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Learning objectives:
Learning objectives:
at the end of the lesson you must be able to:
at the end of the lesson you must be able to:
Identify the major components of a starting system (e.g., battery, ignition switch, starter relay, solenoid, and starter motor).
Appreciate the importance of each component in ensuring vehicle reliability and safety.
PARTS OF STARTING SYSTEM
BATTERY
STARTER MOTOR
SOLENOID
STARTER RELAY
An automotive battery, or car battery, is a rechargeable battery that is used to start a motor vehicle. Its main purpose is to provide an electric current to the electric-powered starting motor, which in turn starts the chemically-powered internal combustion engine that actually propels the vehicle. Once the engine is running, power for the car's electrical systems is still supplied by the battery, with the alternator charging the battery as demands increase or decrease.
STARTER MOTOR is a device used to rotate (crank) an internal-combustion engine so as to initiate the engine's operation under its own power. Starters can be electric, pneumatic, or hydraulic. The starter can also be another internal-combustion engine in the case, for instance, of very large engines, or diesel engines in agricultural or excavation applications
A Starter Solenoid is an electromagnet which is actuated to engage the starter motor of an internal combustion engine. It is normally attached directly to the starter motor which it controls.The device serves two functions. The first is as the actuating coil of a contactor (a relay designed for large electric currents) which connects the battery to the starter motor proper.All modern cars also use the starter solenoid to move the starter pinion into engagement with the ring gear of the engine. The starter solenoid is sometimes called the starter relay, but many cars reserve that name for a separate relay which supplies power to the starter solenoid. In these cases, the ignition switch energizes the starter relay, which energizes the starter solenoid, which energizes the starter motor.
Between the vehicle’s battery and the starter motor, the starter relay acts as a circuit completer or circuit breaker. It helps to increase the battery’s current so that less current needs to be ignited. According to the description, this is a switch between the start solenoid and the start motor.When you turn the ignition key or press the car’s start button, a large current is generated. The starter motor requires considerable current, and the ignition switch cannot be controlled. If there is no relay, it will burn out. If the starting relay fails, the vehicle may not start. As we will see later, there are many reasons why this component may fail. They also require various treatments according to the nature and severity of the hazard. Some can be repaired, and some require the installation of new relays.
SUMMARY oF THE TOPIC
SUMMARY oF THE TOPIC
The starting system is composed of several major components that work together to crank the engine and initiate its operation. The battery provides the electrical energy needed to power the system. When the ignition switch is turned to the "start" position, it sends an electrical signal to the starter solenoid or relay, which then activates the starter motor. The starter motor converts electrical energy into mechanical energy to turn the engine over. It engages with the engine’s flywheel (also called the ring gear), which is connected to the crankshaft, causing the engine to begin turning. Wiring and cables connect these components and ensure proper electrical flow throughout the system. Together, these components enable the vehicle to start efficiently.
How starter motor works?
How starter motor works?
watch it here!!!
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