In some of the latest cars in the marketplace, you can shift gears simply by pressing a button, turning a knob or toggling a little joystick. Yet simultaneously, plenty of different vehicles still require drivers to make use of one foot for the clutch pedal and another for the gas, all when using one hand to control the gear-shift lever through a definite pattern of positions. And several other current cars don’t have any traditional gears at all within their transmissions.

But regardless of whether a vehicle includes a fancy automatic, an old-school manual or a modern-day continuously variable transmission (CVT), each unit must do the same job: help transmit the engine’s output to the driving wheels. It’s a complex task that we’ll make an effort to make a little simpler today, you start with the fundamentals about why a transmitting is needed in the first place.
Let’s actually start with the normal internal combustion engine. As the fuel-air combination ignites in the cylinders, the pistons start upgrading and down, and that movement can be used to spin the car’s crankshaft. When the driver presses on the gas pedal, there’s more fuel to burn off in the cylinders and the complete process moves Variable Speed Transmission faster and faster.

What the transmission does is change the ratio between how fast the engine is spinning and how fast the driving wheels are moving. A lesser gear means optimum performance with the tires moving slower than the engine, while with a higher gear, optimum performance comes with the wheels moving faster.
With a manual transmission, gear shifting is handled by the driver with a gear selector. Many of today’s vehicles possess five or six ahead gears, but you’ll find older models with from three to six ahead gears offered.

A clutch is used to transmit torque from a car’s engine to its manual tranny. The various gears in a manual transmission allow the car to visit at different speeds. Bigger gears offer lots of torque but lower speeds, while smaller sized gears deliver much less torque and allow the car travel more quickly.