moottorinohjausjärjestelmä

Moottorinohjaus translates from Finnish to English as "engine control". In the context of automotive engineering and technology, moottorinohjaus refers to the system responsible for managing and optimizing the operation of an internal combustion engine. This system, often referred to as the Engine Control Unit (ECU) or Engine Control Module (ECM), is a sophisticated computer that receives data from various sensors throughout the engine and vehicle.

These sensors monitor parameters such as engine speed, coolant temperature, manifold absolute pressure, throttle position, oxygen levels in the exhaust, and fuel pressure. Based on this real-time data and pre-programmed algorithms, the moottorinohjaus system makes critical decisions. Its primary functions include controlling fuel injection timing and quantity, ignition timing, idle speed, and sometimes even valve timing. The goal is to ensure the engine runs efficiently, produces optimal power, meets emissions standards, and maintains smooth operation under diverse driving conditions. Modern moottorinohjaus systems are highly integrated, often communicating with other vehicle control units for functions like transmission control, anti-lock braking systems, and traction control.