monipisteruiskutusjärjestelmät

Monipisteruiskutusjärjestelmät, often abbreviated as MPI, are a type of fuel injection system used in internal combustion engines. In an MPI system, each cylinder of the engine has its own dedicated fuel injector. This injector is typically located in the intake manifold, just upstream of the intake valve. The system works by electronically controlled injectors spraying a precise amount of fuel into the intake port during the intake stroke of the engine cycle. This fuel mixes with the incoming air before entering the combustion chamber.

Compared to earlier systems like carburetors or single-point injection (SPI), MPI offers several advantages. The individual injectors allow for more precise fuel delivery to each cylinder, leading to improved fuel efficiency, reduced emissions, and better engine performance. The precise control over the air-fuel mixture helps optimize combustion across a wider range of engine operating conditions. Modern MPI systems are managed by an engine control unit (ECU) that receives data from various sensors, such as oxygen sensors, throttle position sensors, and engine speed sensors, to adjust fuel delivery in real-time. This adaptive capability further enhances efficiency and responsiveness. MPI systems have become a standard in most gasoline-powered vehicles due to their reliability and effectiveness in meeting increasingly stringent environmental regulations.