karburaatoreid

Karburaatorid are mechanical devices used in internal combustion engines to mix air and fuel in the correct proportion for combustion. They are a crucial component in older gasoline engines, having been largely replaced by fuel injection systems in modern vehicles. The basic principle of a karburaator involves using the Venturi effect, where the fast-moving air passing through a narrowed section creates a low-pressure area. This low pressure draws fuel from a reservoir (the float bowl) through a jet, atomizing it into fine droplets that then mix with the incoming air.

The amount of air and fuel entering the engine is controlled by a throttle valve, which is typically linked to the accelerator pedal. Different jets and internal passages within the karburaator are designed to provide the optimal air-fuel mixture across various engine speeds and loads. For example, a primary jet handles normal operation, while a secondary system might engage for higher power demands. Adjustments to the karburaator can fine-tune fuel delivery for performance or fuel economy.

While effective, karburaatorid have limitations. They are less precise in fuel delivery compared to fuel injection, which can lead to less efficient combustion and higher emissions. They are also more susceptible to environmental factors like altitude and temperature changes, requiring manual adjustments. Despite their decline in mainstream automotive use, karburaatorid remain common in smaller engines such as those found in lawnmowers, motorcycles, and some small aircraft due to their simplicity and cost-effectiveness.