More Power and Momentum from the same Volume in Internal Combustion Engines

The power of an internal combustion engine, in principle, depends on the throttle position, volumetric efficiency, density of air-fuel mixture and engine rotation speed. By observing the engine working in unchanged atmospheric condition and constant compression ratio, the degree of filling the cylinder will be higher if the pressure in the cylinder at the end of the intake is higher and temperature lower, density higher, and if the quantity of exhaust gases in the cylinder is smaller. Pre-charging may increase the engine power and the torque without increasing the engine displacement and engine rotation speed, and this has certain advantages as well as certain drawbacks, too. In this work, an analysis of the turbocharger selection was made, including the analysis of its application and impact on an internal combustion engine with free intake. The criteria for successful installation and operation of the turbocharger were analysed. The results of external engine characteristics measurements, before and after the turbocharger installation have been presented and explained.