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Vtec?
Im 16 and im getting a used car for my birthday. my parents are looking at this 2000 Vtec Acura. Is the Vtec model a good brand?
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Maybe give some free advice about: Cars?
Vtec is a marketing gimmick used by honda. what it really means is that it's a twin camshaft engine. to explain it better is easier said than done.
in an engine there are pistons. these pistons are moved upward and downward by combustion. all of the pistons are attatched to a device known as a crankshaft. the crankshaft is turned by the belts in the engine initially. then once ignition is made the pistons contiue turning the crankshaft. but how does ignition happen. above the pistons are valves. in most cars these days it's two to four valves over the pistons. some of the valves are intake valves, some are exhaust valves.
the intake valves open and let in a mixture of gasoline and air that is compressed and ignited by two things. the piston (which rises and presses the gas and air against the bottom of the valves) and the sparkplugs which let out a tiny spark into the gasoline and air. now what happens when you mix a spark and gasoline in a pressurized chamber? it explodes. it explodes and sends the piston back down. and at this point the exhaust valves open up and let out the leftover carbon monoxide that happens after the chemical reaction of burning gasoline and oxygen. and the cycle constantly repeats itself over and over as the car drives.
but where do the camshafts come in? well the camshafts are metal rods that have various round lobes at certain points down the length. usually the lobes have an even spacing between each other and this allows them to do their job. each lobe is attatched to the intake and exhaust valves. and the camshafts turn opening and closing the valves as you drive. on a twin cam engine though you have two cams instead of one. so one cam is devoted to intake valves another to exhaust. so the V-tec system is simply that. an engine with two camshafts. thus making it a faster and more efficient engine. and now you know.
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I dont know much about cars but i thought these sites would help a bit:
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[Link](Mouse over link to see full location)
[Link](Mouse over link to see full location)
[Link](Mouse over link to see full location)
I hope they could help!
♥ danielle
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