The influence of fuel pressure regulator on emission. Fuel pressure regulator can adjust fuel pressure according to engine load
The force keeps it in a stable range. Fuel pressure regulator is usually installed on the main oil supply pipe, which is controlled by the vacuum of the intake pipe. If connection
The vacuum tube of the intake pipe and the fuel pressure regulator is concave or falls off, which makes the vacuum of the intake pipe unable to act on the membrane of the fuel pressure regulator.
On-chip, it may lead to the increase of fuel pressure in the main supply pipe. In addition, if the performance of automobile fuel pump is damaged and the fuel supply pressure is too low, it will cause
The return valve of the fuel pressure regulator is rusty and invalid. After replacing the new fuel pump, although the fuel supply pressure increases, it is adjusted by the fuel pressure.
If the oil return hole of the device is not opened, the pressure of the main oil supply pipe will be too high, the oil supply will be too large, and the mixture will be too thick, which will lead to CO and CO in the exhaust gas.
The content of HC increased. If the fuel pressure regulator fails, the fuel filter is blocked, and the fuel pump is worn, the fuel pressure will be low, leading to mixing.
When the mixture is too thin, the combustion speed becomes slower, and the HC content in the exhaust gas increases.