A turbocharger is a forced induction device used in internal combustion engines to increase their efficiency and power. It consists of a turbine and a compressor connected by a common shaft. Exhaust gases spin the turbine, which transfers motion to the compressor, compressing the intake air. Higher air pressure in the combustion chamber allows more fuel to be burned, thus increasing engine power without increasing displacement. Intercoolers are often used to improve efficiency by reducing the temperature of the intake air. Turbochargers help improve fuel efficiency and reduce emissions, but they require proper oil circulation and regular maintenance. Failures are often related to oil supply issues, bearing wear, or high temperatures.