CARA KERJA SISTEM PENGISIAN KONVENSIONAL

Summary

This video explains the working mechanism of a conventional vehicle charging system. It covers the process step-by-step, from turning the ignition on with the engine off, to low, medium, and high RPMs. The video details how electricity flows through various components, including the alternator, voltage regulator, and rotor coil, ensuring that the battery is charged consistently. It also explains the role of the voltage regulator in managing the charging process to avoid overcharging. The video is informative for those interested in understanding the fundamentals of automotive electrical systems.

Takeaways

• 😀 The conventional charging system works by directing battery power to the fuse link and then to the ignition switch when the ignition is turned on, even before the engine starts.
• 😀 Power from the ignition switch is routed through various terminals and regulators, eventually reaching the rotor coil to generate a magnetic field, which powers the alternator system.
• 😀 When the engine is started, the rotor coil spins and generates electricity through the stator coil, which is then converted to DC power and used to charge the vehicle's battery.
• 😀 The alternator’s system includes multiple terminals and components such as voltage regulators, brushes, and slip rings, which control the direction of current flow and prevent overcharging.
• 😀 The charge indicator light on the dashboard turns on when the engine is off and the system is in the process of building up the magnetic field within the rotor coil.
• 😀 As the engine begins to run at low speeds, the alternator starts producing power and sending it to the voltage regulator, which controls the battery charging process.
• 😀 At higher engine speeds, the regulator adjusts the amount of power going into the rotor coil to prevent overcharging the battery.
• 😀 The voltage regulator helps maintain constant current flow by adjusting the magnetic field in the rotor coil, ensuring that the alternator produces a consistent output regardless of engine speed.
• 😀 The system prevents overcharging by controlling the current that enters the rotor coil, with varying adjustments depending on the engine's RPM (revolutions per minute).
• 😀 Understanding the charging system’s three primary operational phases—low speed, medium speed, and high speed—helps ensure efficient power generation and battery charging without damaging the system.

Q & A

What happens when the ignition key is turned on but the engine is still off?

When the ignition key is turned on and the engine is off, the current flows from the positive terminal of the battery to the fusible link, then to the ignition switch. The electrical current continues through the system, activating the charging indicator light and magnetizing the rotor coil.

How does the alternator generate electricity when the engine is off?

When the engine is off, the rotor coil becomes magnetized due to the current flowing through it. This magnetization causes the charging indicator light to turn on, signaling that the alternator is functioning, even though the engine is not running.

What changes occur when the engine starts running, but at low RPM?

At low RPM, the rotor coil starts spinning, as it's connected to the crankshaft. This movement generates electricity from the stator coil in the alternator, and the electrical current begins to flow through the system, including the voltage regulator.

How does the voltage regulator manage the electrical flow at low RPM?

At low RPM, the electrical current flowing from the stator coil is small, so the voltage regulator keeps the contacts at a position that allows a smaller amount of current to flow, ensuring the system is not overcharged.

What happens when the engine reaches medium RPM?

At medium RPM, the current from the alternator increases, and the magnetism in the voltage regulator becomes stronger. This stronger magnetism pulls the contact points, allowing for more current to flow through the system, which helps to charge the battery more effectively.

How does the voltage regulator work at high RPM?

At high RPM, the magnetism in the voltage regulator becomes very strong. This causes the contacts to move and redirect the current from the rotor coil directly to the ground, preventing overcharging and maintaining a steady flow of current to the battery.

Why is it important to regulate the current flowing to the rotor coil?

Regulating the current flowing to the rotor coil is essential to prevent overcharging the battery. If the current is not controlled, excessive charging can damage the battery, leading to potential system failure.

What are the three methods for increasing the magnetic field in the rotor coil?

The three methods to increase the magnetic field in the rotor coil are: 1) using iron cores in the coil, 2) increasing the number of turns in the coil, and 3) increasing the current flowing through the coil.

How does the alternator prevent overcharging during high RPM?

To prevent overcharging during high RPM, the alternator redirects the excess current from the stator coil to the ground rather than allowing it to flow into the rotor coil. This keeps the output stable and prevents damage to the battery.

What is the role of the charging indicator light in the system?

The charging indicator light serves as an alert to show whether the alternator is working properly. It is on when the engine is off and when the rotor coil is magnetized. It turns off once the engine is running and the alternator starts producing sufficient power.