What is the function of a transmission?

[StellaFitz]

Here is an introduction to the functions of a transmission: 1. Change the transmission ratio: This alters the vehicle's driving speed and the torque on the driving wheels, allowing the engine to operate under the most favorable conditions. During driving, the engine needs to work in different states to meet environmental requirements due to varying surrounding conditions. 2. Interrupt power transmission, achieving neutral gear: When the clutch is engaged, the transmission does not output power. Similarly, when the clutch is not engaged but the transmission is in neutral, it also does not output power. This function allows the driver to leave the driver's seat without turning off the engine. 3. Enable reverse driving: In real-life situations, it is often necessary to drive the vehicle in reverse. However, the engine's crankshaft can only rotate in one direction. The inclusion of a reverse gear in the transmission makes it possible for the vehicle to move backward.

[Pires]

Having driven for over twenty years, I deeply feel that the transmission is like the intelligent brain of a car, specifically directing how the engine should exert its power. When climbing steep slopes, shifting to a lower gear makes the engine push you up with a surge of energy, as if it's been given a boost. During high-speed cruising, shifting to a higher gear immediately quiets down the RPM and saves a lot of fuel. The mechanical sensation of pushing and pulling the gear lever in a manual transmission car is particularly thrilling, while automatic transmissions eliminate the hassle of pressing the clutch, making them a lifesaver in traffic jams. I remember one time when the transmission leaked oil and wasn't repaired promptly—starting the car was such a struggle, and fuel consumption doubled. During maintenance, always remember to change the transmission oil, as its performance significantly deteriorates over time.

[OJeffrey]

As a commuter, I love the convenience of automatic transmissions. Stuck in peak-hour traffic every day, it automatically decides when to shift up or down, saving me the hassle of clutching. A good transmission delivers power smoothly, ensuring steady starts and seamless acceleration without jerking that might startle passengers. On weekend mountain drives, switching to sport mode provides fast and precise gear changes, boosting confidence when climbing or overtaking. By the way, it's advisable to check the shift solenoid during maintenance—this small component can cause jerking if faulty. While dual-clutch transmissions shift quickly, gently pressing the throttle at low speeds helps avoid shuddering.

[EvanFitz]

Having been into car modifications for over a decade, what fascinates me most is the crisp mechanical feel of manual gear shifting. Every time I rev-match downshift near the redline and hear the exhaust backfire, it gets my blood pumping. The brilliance of a transmission lies in its gear ratio setup - close ratios are perfect for track sprints, while wide ratios deliver better highway fuel efficiency. I still remember when I upgraded to performance clutch plates, reducing shift throw by one-third for immediate power delivery without any lag. While modern automatics have become quite sophisticated, veteran enthusiasts still prefer the raw, direct control of a manual transmission.

[CalebDella]

Over the years of driving my kids to school, I've deeply appreciated the importance of automatic transmissions. Especially during cold winter starts, it keeps the gear in low range to warm up the engine, preventing wear. The reversing camera paired with reverse gear provides exceptional stability, eliminating worries about scraping against electric bikes at the kindergarten gate. Frequent urban stop-and-go traffic truly tests a transmission - CVT continuously variable transmission is noticeably smoother, preventing kids from spilling snacks in the backseat. Regular maintenance requires changing the transmission filter, with fluid inspection/replacement around 60,000 km, otherwise gear jerking becomes increasingly noticeable.

[LeIvan]

I like to compare the transmission to a hiker's trekking poles: short poles (low gears) are needed to exert force when climbing steep slopes, while long poles (high gears) allow for big strides on flat roads. A manual five-speed gearbox is like five trekking poles of different lengths, while an automatic transmission is like an intelligently adjustable telescopic pole. Once, I forgot to shift gears in a manual car and released the clutch directly—the engine clunked and almost stalled, which made me realize the brilliance of neutral gear. I recommend beginners rent a manual car first to practice and truly understand the coordination between RPM and gears, so they can handle any car with ease later on.