Posted on 5/31/2023
One of the best inventions when it comes to automobiles is automatic transmission. It completely eliminates the driver's input, allowing them to concentrate on driving - making everything safer. But have you ever wondered about how they work or more precisely, how they shift gears on their own? Well, it's not magic, so continue reading to find out how they exactly work! The Role of Transmission Control Unit (TCU) Modern automatic transmissions are equipped with a Transmission Control Unit (TCU), which as its name implies controls the transmission - specifically serving as the brain behind the shifting process. It utilizes a combination of electronic sensors, algorithms, and predetermined shift maps to determine the appropriate gear shifts based on various factors. Engine Load and Speed The TCU continuously monitors the engine load and speed using sensors such as the throttle position sensor, engine speed sensor, and vehicle speed sensor. Th ... read more