Marine high power diesel engine control system produced by a variety of faults, not only the phenomenon of the fault is different, but also the cause of the fault is complex.Therefore, only those who are quite familiar with the control system, have rich practical experience, and have a better understanding of the control object diesel engine, can speed up.Diagnose faults "and troubleshoot them.

When the diesel engine starts up, the ignition speed has been reached, but the ignition operation cannot be achieved

For compressed-combustion internal combustion engine, the starting speed, in fact, simply grounding represents the temperature inside the cylinder in the starting three elements temperature, fuel and air.If, when the diesel engine starts up, has reached the ignition speed, it means that the cylinder has reached the fuel ignition point temperature, at this time, as long as there is a good atomization of oil injection, can be fired.If you are not angry, there are the following main reasons:

1) although the cylinder has reached the ignition point temperature, there is no oil injection;Of course the engine doesn't fire;

2) in general, there is no problem with air supply from the cylinder.And the factor that causes not to spray oil is very much again, for example, rack of spray oil pump already arrived to fill very big position, but fuel main pipe did not open, of course, impossible undertakes gush oil.

3) if the oil has been sprayed into the cylinder, but the atomization is not good (such as bad oil head), even if the amount of injection is much, it will not ignite.This is caused by too little contact between oil and oxygen.

4) the injection pump has injected oil into the cylinder, which is good for atomization. However, if too few oil stars are injected into the cylinder, it will not ignite naturally.

5) the rack of the fuel pump does not move or when refueling, the rack movement is very small, will not fire.In this case, often is the governor output rocker arm loose skidding, or, because of the output rocker arm, improper installation positioning caused.

6) loose connection of oil adjusting mechanism results in air movement and insufficient refueling quantity, resulting in non-ignition.

7) the total resistance of the oil regulating mechanism is too large, then when the governor controls the refueling, the spring in the elastic rod is compressed, resulting in the rack of the fuel injection pump does not move, and therefore does not supply oil.

In a word, when the diesel engine starts up, it should not only make it reach the starting speed, but also make the refueling amount meet the requirements, in order to achieve a smooth start.Too little oil. Do not ignite too much oil, easy to cause deflagration, not only make the start rough, but also to damage the machine, especially, cause damage to the spindle tile.

Zhenjiang haishun Marine equipment co., LTD. Is a professional production and sales of Marine diesel engine parts at home and abroad operating companies, the company has been applied for the university of technology internal combustion engine research institute professor Chen daochun as a technical director and consultant, quality for survival, reputation for development.

Our company mainly supplies large vessels in China: zhonghai group, cosco group, east China sea rescue bureau of the ministry of communications, south China sea rescue bureau, north sea rescue and fishing bureau, Marine bureau, etc., and Yangtze river shipping system units, providing high-quality and convenient Marine diesel engine, Marine diesel engine parts, diesel engine parts.