Where can gas enter the combustion chamber? Enlargement of the combustion chamber volume due to the piston movement downwards, in another side intake valve open and it will suck up the gas that has been prepared to enter the enlarged combustion chamber. So that the combustion chamber volume will increase, and the impact of the vacuum in the combustion chamber is also getting bigger. However, when the intake stroke start when the piston move down. This position, will leave very little space in the combustion chamber. This position means, the piston position is at the top in the cylinder block. The way it works, it starts from the piston whose position is on the TDC (top dead center). Intake stroke is a process where gas (a mixture of air and fuel with a certain level) are inserted into a room inside the engine, this room called a combustion chamber. The valve, operated by a mechanism that bound to the crank shaft of engine.Īfter you understand the main part, lets discuss the main menu Valve mechanism, this valve have a role as door to enter the air inside the combustion chamber and to take out exhaust gases to the mufler.The movement of piston will change the volume inside the combustion chamber, that’s the main idea of 4 stroke engine working. Piston, silindrical part that move upwad and downward.Head cylinder, closed top cylinder that use as combustion chamber and the housing part of another engine part (ie : spark plug, and valve mechanism).Cylinder block, tubular part that uses for piston movement.If you have a question, how four stroke engine work ? in this article you will find the answer.Īs the name, this engine have 4 steps in a cycle.īefore we discuss about working principle, you need to understand main part of this engine. Today, we’ll learn about the diagram of 4 stroke engine cycle. That’s make cars more economic, moreover this type of engine has better emission than two stroke engine. There are reason why many cars use 4-stroke-engine, basically four stroke engine has lower fuel consumption. Four-stroke-engine is the commonly uses type of engine that many cars have.
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