VTEC

Variable Valve Timing
There are a couple of novel ways by which carmakers vary the valve timing. One system used on some Honda engines is called VTEC.

VTEC (Variable Valve Timing and Lift Electronic Control) is an electronic and mechanical system in some Honda engines that allows the engine to have multiple camshafts. VTEC engines have an extra intake cam with its own rocker, which follows this cam. The profile on this cam keeps the intake valve open longer than the other cam profile. At low engine speeds, this rocker is not connected to any valves. At high engine speeds, a piston locks the extra rocker to the two rockers that control the two intake valves.

Some cars use a device that can advance the valve timing. This does not keep the valves open longer; instead, it opens them later and closes them later. This is done by rotating the camshaft ahead a few degrees. If the intake valves normally open at 10 degrees before top dead center (TDC) and close at 190 degrees after TDC, the total duration is 200 degrees. The opening and closing times can be shifted using a mechanism that rotates the cam ahead a little as it spins. So the valve might open at 10 degrees after TDC and close at 210 degrees after TDC. Closing the valve 20 degrees later is good, but it would be better to be able to increase the duration that the intake valve is open.

PENTRU MAI MULTE DETALI DESPRE VTEC SEE: http://auto.howstuffworks.com/question229.htm

damn si eu credeam ca amandoua axele au came duble, se pare ca doar admisia e mai performanta prin VTEC nu si evacuarea, poate aceasta din urma isi face treaba bine si asa cum e(speedy 5 my bad, asta e, macar am prins ideea cat de cat :P )

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flocea tata , iar ai pierdut aderentza ?

nu vad legatura, tu o vezi :shock: :?:

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Alea de fiat rezista la incidente din astea,in schimb se pare ca-s de honda. Daca erau din otel Krup tineau,asa cu otel de la orezari uite ce iese :lol: :lol:

Cica aseara la hemisiunea Top Gear a iesit HONDA S2000 PE PRIMUL LOC ca masina preferata in Marea Britanie (honda find prezenta cu mai multe modele hexact prin fruncea clasamentului) iar codasele find ...cine credeti Mercedes! sau luat in calcul cred ca in jur de 147 de masini !!! Deci a :roll: aa HONDA rulz ! :P

pentru nea'caisa moderatoru , Kaspersky Antivirus , super bun

koszonom szepen

Ai si license key la el ?

@macs : cu placere

@ demecisu : ai acolo un crack pe care numa tre' sa dai enter , apoi dupa ce se instaleaza dai quit si te duci pe kaspersky in bara jos si dai click drepta si dai la about si vezi ca expira deabia in 2007 . Are we clear ?

250!De-al casei;) dupa cateva luni bune d munca

:peace: pEACE!

mda, mai degraba stage 4 mai demeix mai :P

te ajut la un FULL STAGE overload :?: :twisted:

care nu stie italiana va zic eu....
anunt stanga 1:
3 Iunie 2005 pierdut pisica mascul adult necastrat de culoare neagra, par scurt, pata alba sub gat. Contactati-ma la numerele...xxx Mersi!
anunt 2: Cainele meu a mancat unul identic.
Raspuns cu creionul: esti un nesimtit(sau ce vreti voi, magar etc....)

:lol: :lol: ham, ham eat miau-miau

nero powah'

dashia lougan disel :)