what is the differend between 2 stroke and 4 stroke
Answers
Answer:
Four stroke engines are heavier ; they weigh upwards of 50% more than a comparable 2 stroke engine . Typically, a two- stroke engine creates more torque at a higher RPM , while a four- stroke engine creates a higher torque ar a lower RPM . Two- stroke engine requires pre- mixing of oil and fuel, while the four- stroke engine do not.
please mark me as brainliest...
Answer:
Essentially one complete cycle in a two-stroke engine demands one full crankshaft revolution or two piston strokes, whereas in a four-stroke engine the piston has to complete four strokes or two full crankshaft revolutions.
So which is better? This completely depends on the rider’s preference. Two-stroke engines are typically noisier and produce more exhaust fumes, but also produce more power compared to their weight than four-stroke engines, making them popular for racing. Four-stroke engines, whilst heavier and producing less power per weight unit, are typically described to run smoother, emit less exhaust fumes and generally last longer.
Because the two require completely different lubrication regimes, where in a two-stroke engine the oil is mixed with the fuel and then ignites (complete loss of lubrication), whereas in a four-stroke engine the oil used to lubricate the different engine parts flows back in the crankcase and is not consumed. This means that the two engine oils have a completely different composition depending on their intended purpose. A two-stroke engine oil must be able to mix well with fuel and burn well in the combustion chamber of the engine, whereas a four-stroke engine oil needs to protect the valve train against wear and keep the engine as clean as possible. Ultimately, no matter which type of engine you have, a high-quality engine oil can significantly extend the lifespan of your engine.
Explanation: