Motor Cylinder Head: Parts, How it Works and Functions
The cylinder head of the motorcycle is an important part of the motorcycle engine component which is also a cylinder block cover. We need to know that this one component is generally made of cast iron in order to be able to withstand pressure and high temperatures when the engine is working.
But over time with increasingly evolving technology, aluminum became one of the alloys in the manufacture of the Cylinder Head. Because compared to cast iron, the cooling ability possessed by aluminum is much greater. Below I will explain about the cylinder head of the motor, the function and how it works, we just refer to the following article:
How the motor cylinder head works?
The cylinder head also has channels called ports. Inlet is a channel through a mixture of fuel and air into the combustion chamber. Exhaust channel is a used gas channel from the combustion chamber into the exhaust system.
These valves are placed as a seal against the combustion chamber and the exhaust channel, when the valves are in a closed position will look at the ends of the channels where they enter the combustion chamber (the valves have been removed so you can see these channels more clearly) these valves will discharge and insert pipes that deliver fuel mixture and carry used gas out of the cylinder head bolted to the side of the cylinder head, so that the pipes are in line with this channel is the inlet and exhaust manifold function.
The valve drive gear is mounted on the top of the cylinder head. Valves can be driven by push rods. As explained earlier in this section, or alternatively, one or more camshafts are mounted directly on the cylinder head which is driven by a chain or belt from the end of the crankshaft.
Function of Cylinder Head on a Motorcycle
Broadly speaking the cylinder head or cylinder head on a motorcycle either 2 stroke or 4 stroke engines do not have several functions which include the following:
- Spark Plug Installation
- Valves Mechanism Fittings
- Combustion chamber
- Place a Cooling Coat or Water Jacket
- Place for import and discharge channels
Below are 5 parts found on the motorcycle head cylinder:
The function of the rooftop shaft is to press the valve lifter on the valve so that it can open. As the name implies the camshaft is formed from an iron shaft that has a cam along the shaft. This cam, made in a certain angle so that when the camshaft rotates, the cam can press the valve with the appropriate timing.
The valve can be called a door between part of the combustion chamber and also part of the outside air. That is because the main function of the valve itself is as a place to enter the combustion material so that it looks like a gate. That way the process becomes even easier.
3. Valve Spring
The function of the valve spring itself is to hold the valve position so that it can be closed tightly and perfectly. The valve leaf will be depressed with a spring to the valve mount so that there is no gap and therefore the position of the valve is facing the bottom.
4. Valve lifter / Rocker arm
These two components are interrelated. The valve lifter is shaped like a bowl that covers the top of the valve. The material made in this valve lifter is aluminum metal which has a small frictional force. if the valve lifter material is coarse then it will cause a large power loss because on the surface of this lifter there will be friction with the camshaft, this valve lifter is used to protect the valve stem from the friction of the camshaft.
5. Spark Plugs
The function of the spark plug component of the motorbike we think everyone knows, the spark plug is used as a spark. The position of the spark plug must be at the top point so that the combustion energy can push the piston straight in the combustion chamber. So the engine will be more efficient.
The cylinder head (Cylinder head) is one of the main components of the engine which is attached to the cylinder block and is fastened using bolts. The cylinder head must withstand high temperatures and pressures while the engine is running. Therefore, the cylinder head is generally created from iron.
For the time being there are many engines whose cylinder heads are made of aluminum alloy. Cylinder heads made of aluminum alloy have greater cooling capability than those made of cast iron.
The cylinder block has a function as a piston moving container. The piston cylinder block consists of two components combined into one, namely the cylinder liner and the cylinder block, both of which are attached to each other.
Cylinder block and cylinder liner are made separately, this will provide an advantage when the liner cylinder has excessive wear due to friction with the piston, and cylinder liner can be replaced. Engine cylinder block is made with the following conditions, resistant to heat or high temperatures, can conduct heat well, and is resistant to friction.
Cylinder Block Components
Below are some of the components contained in the cylinder block, including:
Piston is one of the components that functions as an alternating motion produced by the crankshaft and performs the duty cycle of suction, compression, work, and exhaust
The piston ring functions as a seal in the piston work as well as an oil scraper and to withstand leakage during combustion in the combustion chamber.
The piston rod functions as a piston drive which is moved by the crankshaft and as a connecting piston between the crankshaft.
Crankshaft serves as a component to change the particel power (from top to bottom) which is produced by the piston into rotational power (rotation), moving the camshaft and changing the motion back and forth.
Water jacket– In the cylinder block there is a hole through which cooling water is called the water jacket hole. Water jacket serves as a space to circulate water that is useful to cool the engine generally called the cooling system that is inside
Fly wheel – the fay wheel functions as a successor to the power generated by the engine to the power transfer system such as the clutch, transmission and propeler shaft.
How it Works Cylinder
The cylinder head also has several so-called ports. Inlet is a channel through a mixture of fuel and air into the combustion chamber. Exhaust channel is used gas outlet from the combustion chamber into the exhaust system.
These valves are placed as a seal in the combustion chamber and the exhaust channel, when the valves are in a closed position will show the ends of the channels where they enter the combustion chamber (valves have been removed so that the engine motor friend can see these channels more clearly).
These valves will discharge and insert pipes that supply the fuel mixture and carry used gas out of the cylinder head bolted to the side of the cylinder head, so that the pipes are in line with this channel as a function of the inlet and exhaust manifold.
On the upper part of the cylinder head a valve drive gear is installed. Valves can be driven by push rods. As explained earlier in this section, or alternatively, one or more camshafts are mounted directly on the cylinder head which is driven by a chain or belt from the end of the crankshaft.