Polttoainesyöttö

Polttoainesyöttö refers to the system responsible for delivering fuel from the fuel tank to the engine in a vehicle. This system is critical for the engine's operation, as it must provide the correct amount of fuel at the right time and pressure for combustion. The complexity and components of a polttoainesyöttö system vary significantly depending on the type of engine, typically gasoline or diesel, and the era of its design.

Older gasoline engines often utilized a carburetor, a mechanical device that mixes fuel and air before it enters the engine cylinders. In contrast, modern gasoline engines employ fuel injection, where electronically controlled injectors spray fuel directly into the intake manifold or the combustion chamber. Diesel engines, on the other hand, have always relied on injection systems, though the technology has evolved from mechanical pumps to highly sophisticated common rail systems.

Key components within a polttoainesyöttö system generally include the fuel tank, fuel pump (which may be in-tank or external), fuel filter (to remove impurities), fuel lines, and either a carburetor or fuel injectors. The fuel pump generates the necessary pressure to move fuel through the system. The fuel filter protects the delicate components of the injection system or carburetor from damage. The control unit, especially in modern fuel-injected engines, monitors various engine parameters and precisely regulates the amount of fuel injected. A properly functioning polttoainesyöttö system ensures optimal engine performance, fuel efficiency, and emission control.