On vehicles 4 stroke, SOHC and encountered many DOHC.
1 SOHC (Single Overhead Camshaft)
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| SOHC |
As you can see above, so-called because it only has a single camshaft. Through the camshaft and lifters or sometimes could use a rocker arm that moves the valves both intake valves or exhaust valves. Usually in 1 cylinder SOHC, 2 valves have 1 for intake and 1 for exhaust valves. But there are also 4 valves design, namely 2 for intake and exhaust valves to 2. But this would be quite complicated mendesignnya. Why? Because it concerns the timing of the intake valves open / close and exhaust valves open and close its compulsory otherwise the match timings will be struck by the piston.
2 DOHC (double overhead camshaft)
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| DOHC |
DOHC, well of course use the 2 camshaft. Well tuh standard 1 cylinder DOHC 4 valves already, so that is definitely the intake valve and valve SOHC exhaustnya double compared to (a standard). Continue impactnya how? Intake valves for the right mixture of air and gasoline sprayers, well if valvesnya double, then the eruption likely to be much. it means more power. especially coupled with the high compression plus NOS, surely his run really fast! Often times, DOHC used to offset the 2 stroke, means to be able to pursue a whopping 2 steps. then valvenya in double in. Although tetep just no time for it. No wonder the term if use duck 4 stroke SOHC especially the kudu sorted.
Particularly small cc motorcycle DOHC and SOHC are felt. DOHC technology certainly wrote more expensive (easily see the material used and its timing is more complex measure). FU-150 using 150cc DOHC technology, could conceivably use the cc 150cc DOHC engine coupled with a power to weight ratio is pretty much faster then the speed. Jup 135MX which uses 4 valve SOHC is not bad though, but if the other two valves. Continue impactnya on 4 valves clearly more toned and wasteful, while the 2 valves more slow and economical.
