What Do Spark Plugs Do In a Car Engine

You might be wondering what do spark plugs do inside a car engine and why are they needed, well I am going to explain it. A spark plug is a small device that is placed into the cylinder head inside a car engine because it was invented in 1860 by Etienne Lenoir, when he created the first engine that runs because of combustion.

The explanation why it is placed into the cylinder inside a car engine is so the electrical spark that is created by a high voltage coil, which also travels through a spark plugs wire, when the on board computer tells the spark plug to create a spark when you start up your car. When this happens, it will ignite the combustion mixture of fuel and air inside the car engine; this is to make the car engine start up and function. 

The combustion occurs inside the car engine, when the spark from the coil ignites the squashed fuel vapor into the cylinder. This then will cause an explosion to be created and will force the piston and piston rod down; this makes the crankshaft rotate, then makes the gears rotate and then finally the wheels turn, when you apply pressure to the throttle. Once the spark plugs has triggered the combustion to occur, the engine no longer requires them, as the fuel burns repeatedly because it will be entered in the combustion chamber.

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What Makes a Subwoofer Shake Walls In a Room

There are some subwoofers that make your room shake and some subwoofers that dont shake anything. If you want a subwoofer specifically to shake the walls in your room, you will need to take the following information into your consideration:

The size of the subwoofer driver cone matters, if you want a subwoofer to shake the walls in your room. The bigger the subwoofer cone, the more air it can push, which means more bass vibrations that you can feel. If you want good sounding bass with a great punch you can feel, consider you buying a subwoofer that either is 12, 15 or 18 inches.

The tuning of the subwoofer enclosure also reflects on gaining bass that pounds on your chest. The lower the tuning on a subwoofer enclosure, the more you can feel the bass instead of hearing it. For chest pounding bass you can feel for a car audio subwoofer, the ideal tuning frequency is between 30-33 Hz. For a home theater subwoofer setup, consider buying a subwoofer that is tuned to 25 Hz or lower, as this is a optimal Hz range for shaking the walls in your room, as movies tend to go below 25hz and music doesnt.

How much power the subwoofer is producing, reflects on the overall impact of shaking the walls in your room. The more rms watts your subwoofer is pushing out, the more hard the bass is going to hit, which therefore is going to move more air in your room, which will make your chest pound and make things falling off cupboards.

What are you using your subwoofer for, is it music or movies? Most music doesnt have bass frequencies that are below 30 Hz, which is the reason why some people say there walls wont shake when they play music. But if they watch a movie using the subwoofer, a movie has great potential to player lower frequencies below 25 Hz, which makes the subwoofer shake the walls more rapidly, if compared to using the same subwoofer playing music.

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