What is the function of a scavenge system in a diesel engine?

The primary function of a scavenge system in a diesel engine is to remove exhaust gases from the combustion chamber after the combustion process has taken place. This is critical for maintaining efficiency and preventing power loss. The scavenge system works by allowing fresh air to enter the combustion chamber while simultaneously expelling the spent exhaust gases that would otherwise linger and interfere with the new fuel-air mix for the next combustion cycle.

In diesel engines, the scavenge process is vital because it helps in ensuring that there is a clean and adequate supply of air for combustion, which is necessary for optimal engine performance. Efficient removal of exhaust gases also assists in lowering back pressure on the engine, which contributes to improved power output and overall engine efficiency.

By effectively expelling used gases, the scavenge system also plays a role in reducing emissions, as a good scavenging process ensures that burning residual gases is minimized, leading to cleaner exhaust.