What is the main purpose of a condenser in an engine?

The main purpose of a condenser in an engine, particularly in older ignition systems, is to prevent the burning of the points. When the ignition points open, a spark can occur, which can cause wear and potentially damage the points over time. The condenser stores electrical energy and releases it at the moment the points open, reducing the voltage and preventing arcing at the contact points. This prolongs the life of the ignition components and ensures more reliable engine operation.

In contrast, filtering fuel pertains to maintaining fuel quality and is not a function of the condenser. Increasing engine speed involves various factors, such as fuel delivery and ignition timing, and is not directly related to the role of a condenser. While cooling the engine is essential for performance and longevity, this task is handled by the cooling system rather than the condenser.