Kütuserõhu

Kütuserõhu refers to fuel pressure, a critical parameter in internal combustion engines. It is the pressure at which fuel is delivered to the engine's injectors or carburetor. Proper fuel pressure is essential for the correct atomization and delivery of fuel into the combustion chamber, ensuring efficient burning and optimal engine performance.

In gasoline engines, fuel pressure is typically regulated by a fuel pressure regulator, which maintains a consistent pressure within the fuel rail. This pressure is usually between 30 to 60 psi, depending on the vehicle's design and fuel injection system. Diesel engines operate with significantly higher fuel pressures, often in the thousands of psi, due to the nature of diesel combustion and the requirements of common rail injection systems.

Low fuel pressure can lead to a lean fuel-air mixture, causing symptoms such as engine misfires, hesitation, loss of power, and difficulty starting. Conversely, excessively high fuel pressure can result in a rich fuel-air mixture, leading to poor fuel economy, fouled spark plugs, and potential engine damage.

Diagnosing and maintaining correct kütuserõhu is a key aspect of engine maintenance. This often involves using a fuel pressure gauge to measure the pressure at the fuel rail and comparing it to the manufacturer's specifications. Issues with the fuel pump, fuel filter, fuel pressure regulator, or fuel injectors can all affect fuel pressure and require professional attention.