Begini Cara Kerja Transmisi Mobil Matic! - Dokter Mobil Indonesia

Summary

This video offers an in-depth explanation of how automatic transmissions work, featuring a unique simulation machine in Indonesia. The presenter details the interaction between key components like the engine, flywheel, torque converter, clutches, and solenoids. Viewers learn how transmission fluid and solenoids engage gears, and the video also addresses troubleshooting common issues such as delayed shifting, rough transitions, and high RPM without movement. The tutorial emphasizes the importance of understanding transmission mechanics for accurate diagnosis and repair, making it a valuable resource for those interested in automotive technology and maintenance.

Takeaways

• 😀 Automatic transmissions convert engine power into rotational force to drive the wheels, with the help of components like the torque converter and valve body.
• 😀 The torque converter plays a key role in transferring rotational force from the engine to the transmission fluid, allowing smooth gear transitions.
• 😀 The valve body and solenoid valves direct the flow of transmission fluid, controlling which gears are engaged based on vehicle speed and engine RPM.
• 😀 Clutches in automatic transmissions are smaller and more efficient than in manual transmissions, providing smoother engagement and less wear.
• 😀 Transmission fluid is essential for lubrication, cooling, and ensuring the smooth operation of the transmission system.
• 😀 Delayed shifting or difficulty in gear engagement can be caused by issues with the solenoid valve or valve body, which regulate fluid flow.
• 😀 If the vehicle's RPM increases without acceleration, it's likely a sign that the clutch is worn or the system is slipping.
• 😀 A burning smell from the transmission indicates overheating, often due to dirty fluid or a slipping clutch that causes excessive friction.
• 😀 Regular maintenance, such as checking and changing transmission fluid, is crucial to prevent overheating and ensure the transmission works smoothly.
• 😀 In cases of slipping gears or delayed shifting, inspecting the solenoid valve and valve body is a good first step in troubleshooting the issue.

Q & A

What is the main purpose of this simulation of the automatic transmission system?

The main purpose of this simulation is to educate and demonstrate how an automatic transmission works. It’s designed for educational use, showing the inner workings of the transmission system using real working parts and digital connections.

How does the automatic transmission work to transfer power from the engine to the wheels?

The automatic transmission uses a torque converter to transfer power from the engine. As the engine rotates, it drives hydraulic fluid through various components like the valve body and solenoids, which then direct the flow of transmission fluid to engage the appropriate clutches, ultimately transferring power to the wheels.

What is the role of the solenoid valve in an automatic transmission?

The solenoid valve in an automatic transmission controls the flow of transmission fluid. It acts as a switch, directing the fluid to different parts of the transmission system (such as the clutches) to engage the proper gears, based on inputs like engine RPM and vehicle speed.

Why does the transmission fluid need to be directed by the valve body and solenoid valves?

The valve body and solenoid valves are responsible for directing the transmission fluid to specific areas within the transmission. This ensures that the correct gear is engaged by activating the clutches at the right time, depending on the vehicle’s speed and engine load.

How does the automatic transmission system manage the transition between gears?

The system uses hydraulic pressure to manage the gear changes. When a specific gear is selected, the transmission fluid is directed to the appropriate clutches, allowing them to engage. The pressure changes dynamically as the vehicle accelerates or decelerates, ensuring smooth transitions between gears.

What happens if the transmission fluid is low or burnt?

If the transmission fluid is low or burnt, the clutches and other components may not function properly, leading to issues such as slipping gears, delayed shifts, or even complete failure to engage. Burnt fluid often results from excessive friction within the transmission, which can damage the internal components.

What is the difference between an automatic transmission and a manual transmission in terms of clutch operation?

In a manual transmission, the clutch is operated by the driver using a pedal to manually disconnect and reconnect the engine from the wheels. In an automatic transmission, the clutch operation is managed hydraulically and automatically by the transmission system, without driver intervention.

How does the torque converter work in an automatic transmission system?

The torque converter is a fluid coupling that transfers power from the engine to the transmission. It allows for smooth acceleration by multiplying the engine’s torque at low speeds and enabling gear changes without a mechanical clutch. It also isolates the engine from the transmission during idle.

Why do automatic transmissions sometimes experience delays in shifting gears?

Delays in shifting gears often occur when there is a malfunction in the valve body or solenoid valves, which control the flow of transmission fluid. If these components fail to direct the fluid correctly, the system may experience hesitation or delay before engaging the desired gear.

What is the significance of the 'final gear' in the automatic transmission simulation?

The final gear in the simulation is significant because it represents the last stage of gear reduction, where the rotational speed from the engine is converted into the required wheel speed. The gear ratio at this stage results in the vehicle’s final drive output, affecting its acceleration and fuel efficiency.