Two stroke engines how does it work

Mobile Newsletter banner close. Mobile Newsletter chat close. Mobile Newsletter chat dots. Mobile Newsletter chat avatar. Mobile Newsletter chat subscribe. Prev NEXT. Two-stroke engines do not have valves, which simplifies their construction and lowers their weight. This mixture is ready to go into the combustion chamber during down stroke but remains in the crankcase until the piston goes up till TDC. From the 2nd down stroke onwards the exhaust gases get expelled out from one side while a fresh mixture enters into the combustion chamber simultaneously due to partial vacuum created in the combustion chamber after removal of exhaust gases.

This is the beauty of the engine. Both things happen at the same time which makes it a 2 stroke engine. Here, there is no need to open inlet ports intermediately. The process remains the same, difference here is just the design. You might have observed a protrusion on the surface of piston. This design helps the exhaust gases to flow through exhaust port easily giving it a direction.

Suggested Article :- How do Wankel engines work? That would be the case in single cylinder engines. But in case of multi cylinder engines, the other pistons who are undergoing expansion stroke towards BDC push the other ones to undergo compression stroke towards TDC.

Your email address will not be published. Notify me of follow-up comments by email. With most two-strokes, the inward rushing inlet charge helps to sweep the residual exhaust gases out of the cylinder. The problem is that some of the inlet charge — unburnt fuel — can be lost to the atmosphere because both the inlet and exhaust ports are open together for some time. However, the design of the exhaust pipe and silencer can be exploited to minimize this effect.

When an exhaust charge leaves the cylinder, it sends a pulse —a shock wave — down the exhaust pipe, which is reflected back from the end of the pipe. By paying careful attention to the design of the exhaust, engineers can arrange a system that can use the returning exhaust pulse to push the inlet charge, which is trying to follow the exhaust gases down the exhaust pipe, back into the cylinder. In most engines the crankcase and sump contain the oil to lubricate the engine's moving parts.

But with a crankcase compression two-stroke, the crankcase cannot do this because it is needed for initial compression of the fuel and air.

The Video Course teaches you everything about modern cars. The compressed mixture, fired by a correctly timed electric spark, burns and expands, driving the piston down. The burned gases leave the cylinder via the now uncovered exhaust port, and the fresh intake charge rushes into the cylinder via the transfer port , helping to push out the exhaust gases.

Engine Block 18 minutes. Every part explained There's ridiculous detail on every part. Clearly and easily explained. All modeled in 3D We've created the most detailed 3D model ever produced so we can show you everything working.