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.

Read More..

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.

Read More..

How To Fix a TomTom SatNav Thats Not Charging In Car

A TomTom is a great gadget that is a must if you want to get to your detestation, without using a physical paper map. All TomTom models will have an internal battery pack that holds an electrical charge. When you dont connect your car charger to it, the sat nav then obtains its power from the internal battery pack. The power that the battery pack can store is sufficient enough for local trips. If you are planning on going on long distance journeys, it is essential to plug it into your car cigarette charger socket. This will provide constant power to the car sat nav and will no longer rely on the battery packs power. If the green charging light on your TomTom is not lighting up, it is a symptom that it is not charging. You want to find a solution to this problem before you set off or you will eventually have a dead sat nav.

1) Ensure that the USB lead is connected both firmly into the sat nav and car cigarette lighter socket. Loose connections are likely to cause charging problems. If either connectors are loose, the pins inside will not connect properly to their sockets, causing a bad connection.

2) The charging lead could be faulty. If you notice that when you move the wire around, the TomTom charges sometimes and sometimes not, it is probably the cause to the problem. So wiggle the connectors to see if you can get it charging. If you can, then replace the existing cable with a brand new original replacement.

3) Check if the USB adapter is working. Some newer models of the TomTom GPS sat nav come supplied with a USB adapter. Sometimes the pins inside the USB socket you connect the charger plug into can become bent or broken. Look inside the USB socket, you will see four metal pins. If you see any bent pins, straighten them out with a flat head screwdriver. If any pins seem to be broken off, there nothing you can do. You will have to purchase a brand new replacement adapter.

4) The metal pins inside the charging socket could be dirty. It is possible that dust and dirt have contaminated the pins from every day use. When this happens, the metal pins cant get a good electrical connection with there sockets. So obtain a cotton swab and give all sockets a quick clean. Then reconnect everything and see if the device now charges up successfully.

5) Replace the battery pack. If the battery pack is getting charged up, but it is not holding charge long enough, it is faulty. This can happen if you have used up the maximum charges the battery pack can hold or it is damaged from overcharging. You will need to open up your TomTom sat nav to replace the battery pack. No soldering is required, you simply unplug the old battery pack and replug the new one. You can do it yourself at home or send it in for a repair.

Read More..