In some of the most 
recent cars available, you can change gears simply by pressing a button, turning a knob or toggling a small joystick. Yet at the same time, plenty of different vehicles still require motorists to make use of one foot for the clutch pedal and another for the gas, all when using one hand to control the gear-change lever through a distinct pattern of positions. And several other current vehicles don’t have any traditional gears at all in their transmissions.
But regardless of whether a vehicle has a fancy automatic, an old-college manual or a modern-day consistently variable transmission (CVT), each unit must do the same work: help transmit the engine’s result to the driving wheels. It’s a complex task that we’ll try to make a bit simpler today, you start with the fundamentals about why a transmitting is needed in the first place.
Let’s actually begin with the typical internal combustion engine. As the fuel-air blend ignites in the cylinders, the pistons begin Variable Speed Transmission moving up and down, and that motion is utilized to spin the car’s crankshaft. When the driver presses on the gas pedal, there’s more fuel to burn in the cylinders and the whole process moves 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 efficiency with the tires moving slower compared to the engine, while with an increased gear, optimum performance includes the wheels moving quicker.
With a manual transmission, gear shifting is handled by the driver via a gear selector. Many of today’s vehicles have five or six forward gears, but you’ll discover older models with anywhere from three to six forwards gears offered.
A clutch is used to transmit torque from a car’s engine to its manual transmitting. The various gears in a manual transmitting allow the car to visit at different speeds. Larger gears offer plenty of torque but lower speeds, while smaller gears deliver much less torque and allow the car travel quicker.