Väljalasketakt

Väljalasketakt refers to the exhaust stroke in an internal combustion engine. This is the fourth and final phase of the four-stroke cycle, following the intake, compression, and power strokes. During the väljalasketakt, the piston moves upwards in the cylinder, pushing the spent exhaust gases out of the combustion chamber through the open exhaust valve. This process is crucial for clearing the cylinder so it can be refilled with a fresh fuel-air mixture for the next cycle. The efficiency of the väljalasketakt directly impacts the engine's overall performance and emissions. A properly functioning exhaust system helps to ensure that these gases are expelled effectively, contributing to smoother engine operation and reduced pollution. The timing and duration of the exhaust valve opening are precisely controlled by the camshaft to optimize this process.