Sisselaskerõhk

Sisselaskerõhk refers to the pressure within the intake manifold of an internal combustion engine. It is a critical parameter that influences the amount of air entering the cylinders, which in turn affects engine performance and fuel efficiency. In naturally aspirated engines, sisselaskerõhk is typically below atmospheric pressure during the intake stroke, as the piston creates a vacuum. Supercharged or turbocharged engines, however, can generate positive sisselaskerõhk, meaning the pressure is above atmospheric, forcing more air into the combustion chambers.

The measurement of sisselaskerõhk is typically done using a manifold absolute pressure (MAP) sensor. This sensor converts the pressure into an electrical signal that is sent to the engine control unit (ECU). The ECU uses this information, along with data from other sensors, to adjust fuel injection timing and quantity, ignition timing, and other engine parameters to optimize combustion. Variations in sisselaskerõhk can indicate issues such as leaks in the intake system, problems with the turbocharger or supercharger, or restrictions in the air filter. Understanding and monitoring sisselaskerõhk is therefore essential for proper engine operation and diagnostics.