ruiskutushetken

Ruiskutushetki refers to the precise moment when fuel is injected into an internal combustion engine's cylinder or intake manifold. This timing is critical for efficient engine operation, determining when the fuel mixes with air and subsequently ignites. The exact moment of injection is controlled by the engine's control unit, which takes into account various factors such as engine speed, load, temperature, and throttle position.

In gasoline engines, fuel injection can occur in two primary ways: port injection and direct injection. Port injection delivers fuel into the intake manifold, just before the intake valve, allowing it to mix with air as it enters the cylinder. Direct injection, on the other hand, injects fuel directly into the combustion chamber at a specific ruiskutushetki, often during the compression stroke. This allows for more precise fuel control and can improve fuel economy and performance.

For diesel engines, direct injection is the standard. Fuel is injected directly into the cylinder under very high pressure at a precisely controlled ruiskutushetki. The timing here is even more crucial, as the ignition relies on the heat generated by the compression of air. Injecting fuel too early or too late can lead to incomplete combustion, reduced power, increased emissions, and potential engine damage. Modern engines utilize sophisticated electronic control systems to optimize the ruiskutushetki for a wide range of operating conditions.