Can a Car Run Solely on a Battery and Alternator?

In summary, running a car with only a battery and alternator is not possible due to the laws of conservation of energy. The battery can only supply a limited amount of power, and power is lost in the process of powering the wheels. Despite this, some people may still pursue the idea stubbornly.
  • #1
misskitty
737
0
Could you run a car with just a battery and an alternator by having the alternator recharge the battery by using the motion of the wheels and other parts?

~Kitty
 
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  • #2
No, that would be a perpetual motion machine. The battery could only supply the amount of power it gave out to the alternator at the absolute most (real world must take into account inefficiencies). Now if you throw in a drivetrain to power the wheels, power is lost powering the wheels and the power retrieved from those wheels if they could switch to the alternator could only be at the most, the power needed to spin up the wheel.

In other words, conservation of energy says no.
 
  • #3
Ok, then I was right when I tried to explain to my dad other reasons why it wouldn't work. Since this has been proven it doesn't work, why have people pursued it so vigourously?

~Kitty
 
  • #4
Sometimes people will stubbornly refuse to learn.
 

What is the difference between a battery and an alternator?

A battery is a device that stores chemical energy and converts it into electrical energy to power a vehicle. An alternator, on the other hand, is a device that converts mechanical energy into electrical energy to charge the battery and power the electrical components of a vehicle while it is running.

How does a battery work?

A battery works by using a chemical reaction to produce electrical energy. Inside the battery, there are two electrodes, one positive and one negative, immersed in an electrolyte solution. The chemical reaction between the electrodes and the electrolyte produces a flow of electrons, creating a current of electricity.

What is the purpose of an alternator?

The purpose of an alternator is to charge the battery and power the electrical components of a vehicle while it is running. It also helps to maintain the battery's charge and prevents it from being drained while the vehicle is in use.

How often should a battery and alternator be replaced?

The lifespan of a battery and alternator can vary depending on factors such as usage, climate, and maintenance. Generally, a battery should be replaced every 3-5 years, while an alternator can last 8-12 years. It is important to have both regularly checked and replaced as needed to ensure the proper functioning of a vehicle.

What are some signs of a failing battery or alternator?

Signs of a failing battery include dim headlights, slow engine cranking, and the battery warning light appearing on the dashboard. Signs of a failing alternator include a dead battery, flickering headlights, and difficulty starting the vehicle. It is important to have these issues addressed as soon as possible to prevent further damage to the vehicle.

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