Hi everyone, I’ve always wondered why electric vehicle are so silent, I guess it has to do with the type of engine that differs from vehicles running with gas but I really don’t know anything about mechanic sadly 😊
Thanks in advance!
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Gas vehicles have to move a lot of air around, from the intake, to the combustion process, to the exhaust. Unfortunately we do not have a way to move air silently. This is on top of the noise from the motor itself.
Electric vehicles just have the motor which moves but it doesn’t require any air movement.
EDIT: Gas vehicles also have the alternator which needs to move to recharge the battery.
A gas car burns it’s gas, but it’s actually not just burning it it’s also compressing it and then lighting it up. This creates a small, contained, explosion. These happen hundreds of times every second and like all explosions they can get rather loud. The cars have equipment intended to muffle the sounds of the explosions but nonetheless hundreds of explosions per second are loud.
Gas engine is causing 4-5 thousand small explosions every minute, to turn the pistons and generate power. That makes a lot of noise. An electric engine does not cause small explosions.
Apart from the constant explosions in an internal combustion engine that drives the drivetrain, remember that engines need air, fuel, oil, coolant and water. All of these need to be pumped around using various pumps and resevoirs, none of which are particularly quiet.
How Gas engines work: [https://www.youtube.com/watch?v=Y32gDgLq6hE&ab](https://www.youtube.com/watch?v=Y32gDgLq6hE&ab)
How an electric engine works: [https://www.youtube.com/watch?v=tJfERzrG-D8&ab](https://www.youtube.com/watch?v=tJfERzrG-D8&ab)
Bottom line, one has small explosions going off every second
An internal-combustion-engine (a gas car basically) works by taking a little bit of gas from the tank, and igniting it with the spark plug that creates an explosion (the combustion) that pushes the pistons inside the engine that turn a bunch of cranks that can eventually let you push the gas pedal that starts rolling the wheels forward.
So what you’re hearing are all those explosions that are constantly happening and get more intense as you press down on the gas pedal.
Thanks a lot for the answers!
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