What is the performance of dirty nozzles?

When the fuel nozzle becomes dirty, the car will show the following performance:

1, the engine noise becomes louder, especially in low gear and low speed;

2, the throttle response is not sensitive, the acceleration is not stable, and there will be a lag phenomenon after stepping on the throttle. When the accelerator is slammed in neutral, the engine speed rises slowly;

3, idle jitter, especially when starting, it is easy to shake, and there is a slight lack of cylinder when upshifting at low gear and low speed.

The nozzle plays an important role in the engine, and the quality of the nozzle affects the power of the engine.

Poor working due to dirty nozzle will cause carbon deposition in engine cylinder, accelerated wear of cylinder and piston ring, unstable idle speed, rising fuel consumption, weak acceleration, difficult start-up and excessive emission. If it is not cleaned in time, the nozzle will be blocked and the engine will be damaged in serious cases.

Extended data

When the electromagnetic coil is energized, the suction force is generated, the needle valve is sucked up, the nozzle hole is opened, and the fuel is ejected at a high speed through the annular gap between the shaft pin at the head of the needle valve and the nozzle hole, forming a mist, which is beneficial to full combustion.

In the past, the nozzle used in diesel engine was controlled mechanically, and the nozzle of mechanical diesel engine worked by controlling the precision coupling (needle valve and needle valve body).

Nozzle coupling is one of the three precision coupling parts of traditional diesel engine, which are plunger, plunger sleeve, needle valve, needle valve body, oil outlet valve and oil outlet valve seat. The nozzle of gasoline engine is a part of the electronic control system of gasoline engine, which replaces the carburetor of carburetor gasoline engine. The nozzles used in automobiles mainly include diesel nozzles, gasoline nozzles and natural gas nozzles. Some foreign manufacturers can manufacture special nozzles for hydrogen.

The biggest advantage of jet fuel supply is that the control of fuel supply is very accurate, so that the engine can have the correct air-fuel ratio in any state, which not only keeps the engine running smoothly, but also conforms to the norms of environmental protection laws and regulations.

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