![]() This means there will be more turbulence since the gasses are put under more pressure and they will be squished out more violently. Lower squish means that the piston crown comes closer to the piston head. It’s therefore very important to set it to the correct amount. Having the right amount of squish means that the engine is capable of using all of its power while running as smoothly as possible. The squish is crucial for engine performance and reliability. Engine squish also happens with different fuel types, including diesel and petrol. This is even better for the combustion process and more power can be extracted from the engine.Įngine squish can be found in many different types of internal combustion engines, including 2-stroke and 4-stroke engines. This creates turbulence which then causes a more thorough mixing between the air and the fuel. ![]() Needing somewhere to escape to, the gasses are suddenly released into the combustion chamber. When this happens, the gasses (an air and fuel mixture) become trapped, and ‘squished’ inside this small gap. Normally there is a gap of 1 mm or even less between the piston crown and the piston head. When the piston reaches Top Dead Center, the piston crown comes extremely close to the piston head. In other words, Top Dead Center means that the piston is at the top of its stroke, and vice vera. This is essentially just the position of the piston. Position Of The PistonsĮngines have something called a Top Dead Center, and a Bottom Dead Center. These engines can be found in vehicles such as the Ford Mustang, Alfa Romeos, and many other modern cars. Overhead camshaft engines are also quite common as they can provide a car with more power and more speed. However, they have also been used in performance vehicles such as the Chevrolet Corvette and the Dodge Challenger. Overhead valve engines can be found in GM SUV and pickup truck models. You will mostly find the squish effect in side valve, overhead valve and overhead camshaft engines. ![]() Not all engines are built with the squish effect in mind. ![]()
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