kaasuläppäkotelon

A kaasuläppäkotelo, which translates to throttle body housing in English, is a crucial component of a vehicle's internal combustion engine. It is typically located between the air intake manifold and the air filter. The primary function of the kaasuläppäkotelo is to control the amount of air that enters the engine. This is achieved through a butterfly valve, also known as a throttle plate, which is adjustable.

When the driver presses the accelerator pedal, the valve opens, allowing more air to flow into the engine. This increased airflow is then mixed with fuel, resulting in a more powerful combustion and increased engine performance. Conversely, when the accelerator pedal is released, the valve closes, restricting airflow and reducing engine power. Modern vehicles often employ electronic throttle control (ETC) systems, where a motor controlled by the engine's computer (ECU) adjusts the position of the throttle plate instead of a direct mechanical linkage to the pedal.

The kaasuläppäkotelo also houses various sensors, such as the throttle position sensor (TPS). This sensor informs the ECU about the exact position of the throttle plate, which is vital for the ECU to accurately calculate the correct amount of fuel to inject and ignition timing to achieve optimal engine operation and fuel efficiency. A malfunctioning kaasuläppäkotelo can lead to a range of drivability issues, including rough idling, hesitation, poor acceleration, and increased fuel consumption.