Ic engines animation
Since the valves are still closed, the flame has no place to escape and pushes the piston downwards. When this spark comes into contact with the compressed air-fuel mixture, it ignites the mixture. Power Stroke: Just before the piston reaches the topmost position in the compression stroke, the spark plug mounted on the cylinder head lets off a very tiny spark. As it moves up, it compresses the air-fuel mixture as it has no place to escape with the closed valves.ģ. Just before the piston reaches the lowermost position, the intake valve closes. Compression Stroke: Once the piston has reached BDC, the compression stroke begins. As the piston reaches bottom dead centre or BDC, the chamber fills up with air-fuel mixture.Ģ. As the piston moves down, it sucks in the fresh air-fuel mixture from the manifold. Just before the piston begins its downward motion, the intake valve opens up. Intake Stroke: The combustion starts with the piston at the top dead centre or TDC position. Let’s have a look at these 4 strokes in detail:ġ. The piston generates usable power through a total of 4 strokes or 4 movements of the piston from end to end.
The rotational force that is generated on the wheels starts with the movement of the piston. Here the most important part is the piston. The combustion process takes place inside the combustion chamber present in the head. Now let’s get started with the serious business, i.e. Video Courtesy: YouTube How a Car Engine Works: Processes Inside the Engine Block The rotation is timed with a very delicate and precise timing mechanism that can be adjusted manually. The rotation of the camshaft is connected to the rotation of the crankshaft via belts and pulleys. Once the sharp end transitions back to the round end, the valve springs push back the valve to its original position and shut the port. When the sharp end of the cam is rotating against the valve, it pushes the valve downwards and opens up the port. The camshaft is a cylindrical rod with drop shaped protrusions known as cams. The opening and closing of the valves are done by an actuator rod known as the camshaft. The valves open and close based on which stroke is taking place. The valve in simple terms is the device that seals the chamber shut during combustion and opens the gate when fuel has to enter the chamber or gases have to exit. Next, we move on to the tap controlling the fuel release, the valve. The fuel, on the other hand, is injected into the end of the manifold through a nozzle called the fuel injector. The air is directly sucked into the manifold from the throttle body. The intake manifold is the channel through which the air-fuel mixture flows into the combustion chamber. The combustion process begins at the engine head, precisely at the intake manifold. How a Car Engine Works: The Processes Inside the Engine Head Here is a flowchart overview of the processes taking place from the start of the power cycle to the end: The 4-strokes are as follows: Intake Stroke, Compression Stroke, Power Stroke, Exhaust Stroke. Each stroke is defined as the movement of the piston from the bottom most position (Bottom Dead Centre) to the topmost position (top dead centre) and vice-versa. The modern day car engine is a 4-stroke engine which means it creates usable power in 4 strokes. How a Car Engine Works: The Fundamental Workflow Its key components are the oil pan and the oil filter. The oil sump constitutes the lowermost part of the engine. The key components here are the combustion chamber, piston, and the crankshaft.ģ.
The cylinder block is where all the combustion action takes place. Its key components are the camshafts, valves and spark plug.Ģ. The cylinder head is the channel through which the fuel enters the engine chamber and exhaust gases exit. In broad terms, the engine can be segregated into three key parts, the head, the block and the oil sump.ġ.
So let’s commence with this article and understand how a car engine works. We will take a look at its intricate components and their individual functions. Today we’ll take a look at the working of the component in the car that allows it to move at such speeds, the engine.
But it has happened and going at the current rate things are only going to get better. About 200 years ago, nobody would have even thought you’d have 4-wheeled enclosed metal carriages in the future, capable of moving above 27 metres in a single second. Have you ever wondered how fascinating a car is? It is a device where you pour in some liquid, sit on a chair and use simple movements from your hand and feet to get to places faster.