A vehicle’s transmission—sometimes known as the gearbox—is a key component of its drivetrain system. The transmission, which is mounted directly onto the engine, converts the raw combustion power the engine produces into momentum. This process transfers the right amount of power and torque to the wheels, allowing the vehicle to move.
The transmission’s main job is to deliver adequate power and torque to perform a given task or to operate under particular conditions without giving too much power that the car becomes difficult to control. Subaru transmissions are engineered to work in tandem with standard all-wheel drive to help you navigate challenging terrain, travel icy roadways, or scale up or down steep hills. The transmission and all-wheel drive ensure that power is shifted seamlessly to the wheels with the most traction, maintaining a safe and steady speed in any weather.
In motor vehicles with internal combustion engines, the ignition of fuel in the engine’s combustion chamber produces the raw energy to start all systems in the car. However, it generates far more energy than is needed for the car to run idle or travel at low speeds. The energy flows through the transmission to allow the driver to control the amount of power being transferred to the wheels at any given time, depending on power needs and driving conditions. Most importantly, this process helps in maintaining safe and steady speeds.
What is the Difference Between a Manual & Automatic Transmission?
There are two main types of transmissions: manual and automatic. In a manual transmission (or “stick shift”) vehicle, the driver must continuously select the appropriate gear to operate their car under the conditions at hand using a clutch pedal and a gear shifter. Depending on the gear selected, the transmission delivers the appropriate amount of power to rotate the wheels to handle a given road condition. Drivers of cars with manual transmissions must be aware of their power needs at all times so they can shift gears when necessary.
Automatic transmissions function the same as manual in terms of how power is delivered to the wheels. However, instead of the driver continuously shifting gears, automatic transmissions have an internal system of sensors, processors, and actuators. This system determines the proper gear for the vehicle under given conditions and shifts on their own, without additional action by the driver.
Today, most new cars in the United States have automatic transmissions by default, but manual vehicles certainly have their uses and their loyalists.