What component is responsible for cleaning discharged blow-by gas?

The crankcase breather plays a crucial role in the engine's emission control system by managing blow-by gases that escape from the combustion chamber into the crankcase. This component is designed to ventilate the crankcase and redirect these gases back into the intake system, where they can be burned in the combustion process instead of being released into the atmosphere.

By capturing and filtering these blow-by gases, the crankcase breather not only helps in reducing emissions but also maintains the engine's efficiency and performance. This function is essential because blow-by gases can contain unburned fuel and combustion byproducts, which, if not properly managed, could lead to increased pollution and engine wear.

In contrast, other components like the fuel pump are responsible for delivering fuel to the engine, the vibration damper helps reduce engine vibrations, and the air filter is tasked with filtering the air entering the engine for combustion. None of these components perform the specific function of cleaning or managing blow-by gases in the way that the crankcase breather does.