What type of lock-up allows the lock-up timing to be affected by load and driver input conditions?

What type of lock-up allows the lock-up timing to be affected by load and driver input conditions?

• A. Converted
• B. Modulated
• C. Scheduled
• D. Moderated

Answer: (B)

The main idea is that torque converter lock-up can be controlled in a way that responds to how hard the engine is working and what the driver is asking for. A modulated lock-up doesn’t engage at a fixed moment; it adjusts the clutch engagement smoothly based on signals like throttle position, engine load, and vehicle speed. This lets the system tighten the slip more or less as needed, improving efficiency when under light load and preventing harsh engagement or lugging under heavy load. So, the timing is affected by load and driver input, which is exactly what a modulated lock-up does. The other terms describe fixed or non-responding behavior, which wouldn’t account for changing conditions.

The main idea is that torque converter lock-up can be controlled in a way that responds to how hard the engine is working and what the driver is asking for. A modulated lock-up doesn’t engage at a fixed moment; it adjusts the clutch engagement smoothly based on signals like throttle position, engine load, and vehicle speed. This lets the system tighten the slip more or less as needed, improving efficiency when under light load and preventing harsh engagement or lugging under heavy load. So, the timing is affected by load and driver input, which is exactly what a modulated lock-up does. The other terms describe fixed or non-responding behavior, which wouldn’t account for changing conditions.