Why is called a 4 stroke engine, because there are 4 steps.Here are the details of each process. For simplicity, then your email settings to HTML so that the images will appear sequentially. Picture taken from the website www.howstuffworks.com / engine.htm. On this website, the image is moving. But for the sake of simplicity, the image deliberately set per step.
1. IntakeCalled the intake step because the first step is to suck through the piston from the carburetor. Fuel supply is not enough just from the spray carburetor. The way it works is as follows. First piston at the top position (or so-called Upper Dead Point). Then the piston sucks fuel already be set / mix between gasoline and air in the carburetor. The piston then suck back the fuel. To open, required valve or inlet valve which opens when the piston down / sucked downward.
Movement is governed by the inlet valve or a mechanical camshaft. Namely, camshaft set amount of valve opening by pressing the lever valve. Own camshaft driven by a chain attached keteng between the camshaft to the crankshaft. For details, see the following figure.
Note that A is the Intake Valve (valve into the fuel) and the valve is pressed (open) because I (camshaft) pressure valve A. Thus, when the piston goes down, then A is both open and fuel is pulled into the combustion chamber. A will be closed to some extent before the second step: compression. Keteng chain is not visible because it will be difficult to describe above, but the crankshaft (P) is connected to the camshaft (I). Some European cars like Mercedes use a chain as a liaison between the crankshaft and camshaft, but generally in Japanese car using a belt that we know as the timing belt.
2. CompressionThis step is a continuation of the above steps. After the piston reaches the lowest point in the intake stage, then the intake valve is closed, and do the compression process. Namely, the existing fuel in the combustion chamber is compressed. The room has been sealed since the two valves (intake and exhaust) is closed.This process is continued until the following steps that the explosion plugs in step 3.
1. IntakeCalled the intake step because the first step is to suck through the piston from the carburetor. Fuel supply is not enough just from the spray carburetor. The way it works is as follows. First piston at the top position (or so-called Upper Dead Point). Then the piston sucks fuel already be set / mix between gasoline and air in the carburetor. The piston then suck back the fuel. To open, required valve or inlet valve which opens when the piston down / sucked downward.
Movement is governed by the inlet valve or a mechanical camshaft. Namely, camshaft set amount of valve opening by pressing the lever valve. Own camshaft driven by a chain attached keteng between the camshaft to the crankshaft. For details, see the following figure.
Note that A is the Intake Valve (valve into the fuel) and the valve is pressed (open) because I (camshaft) pressure valve A. Thus, when the piston goes down, then A is both open and fuel is pulled into the combustion chamber. A will be closed to some extent before the second step: compression. Keteng chain is not visible because it will be difficult to describe above, but the crankshaft (P) is connected to the camshaft (I). Some European cars like Mercedes use a chain as a liaison between the crankshaft and camshaft, but generally in Japanese car using a belt that we know as the timing belt.
2. CompressionThis step is a continuation of the above steps. After the piston reaches the lowest point in the intake stage, then the intake valve is closed, and do the compression process. Namely, the existing fuel in the combustion chamber is compressed. The room has been sealed since the two valves (intake and exhaust) is closed.This process is continued until the following steps that the explosion plugs in step 3.
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