boat tachometer not working

• 2022-04-25

Check whether the boat tachometer is not working. If there is no problem with the tachometer, check the signal transmission between the computer and the computer.

The various faults of marine high-power diesel engine control system not only present different phenomena, but also the causes of faults are 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 quickly "diagnose the fault" and eliminate it.

Therefore, each fault of the control system must be carefully observed and analyzed in order to make a correct judgment; So as to take corresponding measures to eliminate the fault and restore the control system to the normal working state.

Although the ignition point temperature has been reached in the cylinder, there is no fuel injection; Of course, the host will not get angry; In general, there is no problem with cylinder air supply. There are many factors causing non fuel injection. For example, the fuel injection pump rack has reached a large refueling position, but the fuel header is not opened. Of course, it is impossible to inject fuel. If the fuel has been injected into the cylinder but the atomization is poor (e.g. the oil head is broken), the 357 will not get angry even if the injection amount is more. This is caused by too little contact between oil and oxygen. The fuel injection pump has injected fuel into the cylinder, and the atomization is good, but the amount of oil injected into the cylinder is too small, so it will not get angry naturally. When the fuel injection pump rack does not move or refuel, the rack moves little and will not get angry. In this case, the output rocker arm of the governor is often loose and slippery, or it is caused by improper installation and positioning of the output rocker arm. There is looseness at the connection of the oil regulating mechanism, resulting in idling and insufficient oil filling, resulting in no ignition. If the total resistance of the oil regulating mechanism is too large, the spring in the elastic rod will be compressed when the governor controls oil filling, resulting in the immobility of the rack of the fuel injection pump, so there is no oil supply. In short, when starting the diesel engine, we should not only make it reach the starting speed, but also make the refueling volume meet the requirements, so as to achieve a smooth start. Too little oil, no fire; If the oil quantity is too large, it is easy to cause deflagration, which will not only make the starting rough, but also hurt the machine, especially the main bearing bush.