Nodg's Online Automotive Support Site
How Motors Work-  Advanced Course
SO HOW DOES AN ENGINE WORK AND TRANSFER THE POWER TO THE WHEELS?
For Dummies v1.0


The basics of how a car works can be taught to you in only a few minutes! We'll briefly go over the electrical system, engine and how it operates, the transmission/gearbox, and the brakes in this section of the site, if your up for more of a challenge click the 'advanced course' button above which is a more detailed version on how carengines work..



To start a car, the driver puts the key in the ignition lock and turns it. this closes a switch and allows an electrical current to flow from the battery to the starter motor, ignition coil and fuel pump, which starts the engine.
The current from the battery engages the starter motor, which turns the crankshaft in the engine. The crankshaft begins to move the pistons, valves and pulse the injectors (in an EFI equipped motor), this starts the fuel pump to pump fuel from the petrol tank into the engine. An electric spark generated from the coil, via the battery, gets delivered to the spark plugs, igniting the fuel which explodes and starts the combustion process. Once the engine is running, the starter motor shuts off. Now the engine is producing power, which now has to be transfered from the engine through the drive train system to the cars wheels. the gears in the transmission start the work of carrying the power to the wheels. The gears change the direction and force from the engine, which controls the movemnet of the engines power. some cars have an automatic transmission, this means the gears operate by themselfs as the car picks up speed or slows down. there is a computer in the car (EFI only) that determins when the gears have to be changed.
If the car does not have an automatic transmission, when the gears need changing, the driver has to push in a pedal called a clutch and switch gears manually using a gear stick.

The brakes stop the car from moving, cars have a foot brake and a parking brake. There are two types of brake setups, disk brakes and drum brakes both types use friction to stop the car. There are three types of drive trains, front wheel drive, rear wheel drive and all wheel drive.
In a rear wheel drive car, the power is transfered to the wheels from the engine, through a tail shaft (also known as drive shaft) then through another set of gears called a differential which transfers the engines power 90 degrees to spin the axles.
In a front wheel drive, the power is transfered from the engine, then through a transaxle, then straight through the drive shafts and wheels.
All wheel drives use a combination of both front wheel, and rear wheel drives but with the addition of a transfer case.



Now you know the basics of how a car works, click on the
'My advanced course' button above to learn about differant sort of engines and how they operate in detail,  it will include learning about the combustion sequence, all essential moving internal parts that are required for a engine to operate and what their specific job is, also a basic rundown on how forced indiction works.






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Thank you for visiting the latest in online automotive support, in this site you will learn everything from buying the right car, how the motor works and transfers the power to the wheels, how to service and maintain your vehicle as well as other useful hints and tips. If you have any additional enquiries about the information on this site or if you have any technical issues, please email me from the link provided at the bottom of this page.


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