A transmission is a machine that can transmit power, and almost everyone would agree that all cars have a transmission, but does this go for all vehicles, including electric cars?
The transmission system helps to transmit the rotating power of an electric source, an internal combustion engine, also known as ICE or an electric motor. This power passes through gears and then to a differential unit that helps spin the wheels, giving your vehicle the ability to move.
Although many people believe the transmission to be the part of the engine that assists in shifting the gears from high speed to a low-speed rate or from reverse to forward as in “automatic transmission” and “manual Transmission”, Let’s find out if this theory also works for electric vehicles.
How Does an EV Work?
Electric vehicles’ unique features (EVs) are their smooth acceleration and instantaneous and super-quiet operation. This is because the propulsion for electric cars works differently. Including mode of operation and performance, gasoline-powered cars differ from electric cars because of the fuel source.
Unlike ICE vehicles, when you turn on an electric car’s engine, electricity immediately moves from the car’s battery to the electric motor, making it spin rapidly.
Most EVs that are electric vehicles have a single AC (alternating current) motor connected to the gearbox. What is found in this gearbox is otherwise called the transmission, which is made up of a set of gears that help to transmit the rotation of the motor, which is the same as the rotation of the wheels.
But this is more accurately known as a single-speed gear reduction unit because the multiple gears in this gearbox are always connected to each other, and they spin at once. The energy passes instantaneously and directly through the gearbox from the motor to the wheels instead of a transmission. Transmission from one speed to another does not need to shift from one gear to another for a quiet and smooth acceleration.
Overall, electric cars averagely convert electricity of 77% that is stored in the battery with the aim of moving the vehicle forward. For a gas-powered car, the energy is between 12% to 30% of the energy stored in the gasoline tank. The transmitting power from the EV motor to the wheels is 89% up to 98% efficient; however, this depends on the car’s model.
Can Electric Cars Have Multiple Gears?
EV or ICE cars need more torque than speed to propel the vehicle from a dead stop and more speed than torque if there is already a forward momentum present.
When electric cars, especially the 18-wheelers, come out on the market, they may have transmission and multiple gears.
Still, given the range of RPMs that is possible with electric motors, they might have two or at least: one for the cruising speed and another for the torque, with a shift from one to the next at around 30mph.
Some ICE and other hybrid cars have CVT, the continuous variable transmission, a form of automatic transmission that effortlessly goes from one speed to another, using pulleys in place of gears.
What Transmission System Is Used in Electric Cars?
Electric cars use single-speed transmission because their motor is more efficient in different ranges and conditions. The energy generated in electric vehicles is transferred via the gearbox to a drive wheel.
The speed of this motor is reduced by two steps: torque multiplication and speed reduction.
You can see that this is different from the working mechanism of a diesel engine. Plus, electric vehicles are environmentally friendly, as they don’t release any form of pollution.
Do Electric Cars Have CVT Transmission?
Unfortunately, electric cars do not possess continuous variable transmission (CVT), an automatic transmission system that charges effortlessly through continuous gear ratios.
The CVT provides an exceptionally smooth driving experience compared to a traditional automatic.
One of the top benefits of the CVT is that it is highly fuel-economical than your typical automatic. Those who started driving with the manual transition will understand the concept of gear changing.
Why Don’t EVs Offer Manual Transmissions?
Basically, there’s no point in having manual transmission systems in an electric car. In internal combustion engine vehicles, you’ll need to rev the engine to gain access to the full torque and power.
To do that, you have a transmission with different gear ratios. Even with the transmission support, these engines don’t have the rev range compared to electric vehicles.
Electric vehicles deliver instant power whenever you set your vehicle in drive. Due to this, an EV needs a single-speed transmission system.
And also, regular cars have an 8,000 range RPMs limit, but you can find a lot of systems that can get up to 20,000 revolutions per minute.
It is possible to add more gears to EVs, but it is not necessary considering their designs.
Do electric cars need transmission fluid?
Electric cars have obvious fluctuations in terms of power flows, and they also have very high motor speeds of about 15,000 revs per minute. They need several fluids, like the oil for the gear reducer, referred to as the transmission for the electric vehicle. There is also oil for the electric motor if the time comes for the automaker to enhance its cooling effect.
Why does the Taycan have a transmission?
The two-speed transmission placed on the Taycan’s rear axle is a top-notch innovation built by Porsche. The first gear provides the Taycan with high power for acceleration during the initial movement of the vehicle, and there is a long second gear that makes sure that the vehicle has high power and efficiency even when you’re driving at a very high-speed rate.
What transmission system is used in electric cars?
The power developed in the electric car motor is moved to the drive wheel and the gearbox channel. Electric vehicles use a single-speed transmission system because the motor is very efficient in a broad range of conditions. The motor’s output speed is lowered in basically two steps: speed reduction and torque multiplication. You should know that the transmission system in your regular internal combustion engine cars is not the same design as in electric vehicles. Electric vehicles are an entirely different unique design to your normal vehicles.
Do electric cars use engine cooling?
In an electric car, the cooling system controls the temperature of the battery’s pack and some other electronics. Most electric cars use a cooling loop to help maintain the optimum temperature for proper car functioning. This loop typically contains the ethylene glycol coolant. This coolant circulates throughout the car batteries and electronics using the electric pump.
Are Electric Vehicles very expensive to insure?
Registering for an electric vehicle’s insurance policy might cost a lot more than you would if you are ensuring the traditional gas-powered vehicle. The electric vehicle has a higher price tag and is a more complex machine; this means that it will need more money to repair any damaged parts or replace the car if it gets into an accident. Policyholders who offer collision coverage will also specify very high rates.
Electric vehicles are made with a unique design, so it’s difficult to compare them with fuel engine vehicles, even in terms of the purchase cost.
Most of its parts, especially the engine system, are very different from the usual design and achieve a much higher speed.
With your well-explained guide, you should now get a clear picture of the mechanism of EVs and how they function.