Diesel generators (
) are prone to breakdowns. Temperature is the most likely cause of machine breakdown in our lives. The ambient temperature is too low. When the temperature is low, the diesel engine must be preheated, otherwise it will be difficult to start. Generally speaking, the prerequisite for the normal operation of a Cummins diesel generator set is that well-atomized diesel can be accurately and timely injected into the combustion chamber, and the compressed air in the combustion chamber combustion must reach a temperature sufficient to ignite and explode. To meet these two conditions, the diesel engine must have a sufficiently high speed and a certain temperature in the cylinder at start-up. When the Cummins diesel generator set cannot start, the reasons should be investigated from the perspective of starting, diesel engine fuel supply system andcompression. Carefully examine the problem from the following two aspects to solve the essence of the problem. Additionally, the startup speed of a machine will also cause the whole problem. Startup speed is low. For manually started diesel engines, the speed should be increased gradually and then the decompression handle should be moved to the non-decompression position to allow normal compression in the cylinder. If the decompression mechanism is incorrectly adjusted or the valve resists the piston, you will often feel like it is very laborious to crank the car. Its characteristic is that the crankshaft cannot rotate when rotating in a certain position, but it can turn back. At this time, in addition to checking the decompression mechanism, you also need to check whether the meshing relationship of the timing gear is wrong. For diesel engines using electric startersctrics, if the starting speed is extremely slow, it is mainly because the starter is weak, which does not mean that the diesel engine itself is defective. A detailed inspection of the electrical wiring should be performed to determine if the battery is fully charged, the wire connections are tight, and the starter is operating properly. When the starting system circuit passes the test and proves that there is indeed no fault, you should focus on why the Cummins diesel generator engine cannot work. Generally speaking, the first thing to test is the engine's ignition system, which is also the simplest test. In early ignition systems, you can easily remove the ignition coil and use a spark detector to check if the spark is normal. When choosing a spark detector, an adjustable detector is preferable.It has a fixed design because it allows you to adjust the detector to a smaller space so you know no sparking occurs. Well, there is still an electric spark, but it is very strong. weak. For problems like Cummins diesel generator engine failure to start, the first step is to detect the circuit in the engine starting system. In the most basic form of composition, the starting system circuit usually consists of the following most basic elements, namely the battery, the starter motor and the cables connecting these components. Of course, the vehicle's ignition switch, starter relay or electromagnetic coil, and anti-theft system are also important components of the starting system. For Cummins diesel generator engine start failure diagnosis, the battery should be tested first. It is necessary to know if the motor cannot startstop running due to insufficient battery power.
I hope this can be useful to you.