INNOVATION PLACEMENT VALVEVarious types of valves can also be distinguished from the way placement on the cylinder head . Innovation motorcycle engine done in anticipation of the high speed , the addition of power output and construction effort as possible . There are three kinds of innovation valve in terms of placement , namely Valve Side ( Side - Valve ) , Overhead - Valve ( OHV ) and Single Overhead Camshaft ( SOHC ) . Side valve ( SV ) is the simplest construction and light and mechanical propulsion is placed next to the valve . This model is considered the oldest and less able to serve round high . Therefore , this model is modified to be a model OHV . valve This type of valve has a longer rod -driven cam shaft located parallel to the crankshaft . movement of the shaft Cam guided by a pipe which is secured to the cylinder block . type third ( SOHC ) is designed to make the valve system componentslighter . Valve stem is driven not by a cam shaft , which considered to make the heavier components , but through the gears . In fact , the latest innovation some are driven by a chain ( cam chain ) . This last innovation is called Double Overhead Camshft ( DOHC ) Here's a picture of each valve placement innovation on a motorcycle:
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| Figure 1 Placement of the valve on the side |
SV (side valve)
In addition to the SV or valve, cam mounted on the crankshaft and pushed upwards and move the valve. Valve attached besides piston so that a larger combustion chamber. it is allows the compression ratio to produce greater and reducing engine power. This type is suitable for machines with low speed, typically used in industrial machinery.
In addition to the SV or valve, cam mounted on the crankshaft and pushed upwards and move the valve. Valve attached besides piston so that a larger combustion chamber. it is allows the compression ratio to produce greater and reducing engine power. This type is suitable for machines with low speed, typically used in industrial machinery.
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| Figure 2. Placement of overhead valve |
OHV (overhead valve assembly
In this type of valve position is between the piston and the driven by rocker arm. This type of compression space is smaller, so can result in high compression ratio and engine power becomes larger. Because equipped with The pressing rod length and the presence of the rocker arm causes behind the movement of larger valves and also the distance and Cam is far less stable it round high.
In this type of valve position is between the piston and the driven by rocker arm. This type of compression space is smaller, so can result in high compression ratio and engine power becomes larger. Because equipped with The pressing rod length and the presence of the rocker arm causes behind the movement of larger valves and also the distance and Cam is far less stable it round high.
SOHC (single over head camshaft)
In this type of suppressive rod does not exist, so the turning movementc an be neutralized. Barada cam position above the cylinder is middle, cam driven by the drive chain cam so that the cam rotates the rocker arm presses. axis cam serves to move the intake valve (IN) and valve exhaust (EX), in order to open and close according to the process that occur in the engine combustion chamber. This type of components so little remains stable at high speed. called single over head camshaft because it only uses one cam on designs. Or SOHC is a single shaft system in the head cylinder.
In this type of suppressive rod does not exist, so the turning movementc an be neutralized. Barada cam position above the cylinder is middle, cam driven by the drive chain cam so that the cam rotates the rocker arm presses. axis cam serves to move the intake valve (IN) and valve exhaust (EX), in order to open and close according to the process that occur in the engine combustion chamber. This type of components so little remains stable at high speed. called single over head camshaft because it only uses one cam on designs. Or SOHC is a single shaft system in the head cylinder.
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Figure 3. Placement of SOHC
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DOHC is dual shaft system in the cylinder head. function The same as the DOHC SOHC, the difference lies in the number of The cam shaft. In camnya DOHC shaft number two, whereas the SOHC only one. In this type there are rocker arm wear some that did not exist. Valves come in and exhaust valves are operated separately by two cam. type DOHC rocker arm that uses reason to make it easier adjusting the valve clearances and change the valve opening step. This type of treatment is complicated high cost of manufacture and machine heavier. Usually used on the machines speed sports high
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Figure 4. Placement of DOHC
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OK fellow post position / location of the valve enough so, if there are additional, criticisms and suggestions, in beg to leave a message ^ _ ^
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