tyhjäkäyntikierroslukua

Tyhjäkäyntikierros refers to the rotational speed of an internal combustion engine when it is running without any load applied. This is the speed at which the engine idles. It is typically measured in revolutions per minute (RPM). The tyhjäkäyntikierros is crucial for maintaining engine operation when the vehicle is stationary, such as at a stoplight or when the clutch is disengaged.

The idle speed is controlled by the engine's control unit, which adjusts various parameters like fuel injection timing and throttle opening to maintain a stable and consistent RPM. Factors influencing the tyhjäkäyntikierros include engine temperature, air intake temperature, and the presence of accessories like air conditioning or power steering, which draw power from the engine. A properly set tyhjäkäyntikierros ensures smooth operation, prevents stalling, and contributes to fuel efficiency when the vehicle is not in motion. Variations in tyhjäkäyntikierros can sometimes indicate underlying engine issues, such as vacuum leaks or problems with the idle control system.