Analysis of several common problems that cannot start the diesel generator set

Diesel generator set uses diesel as the main fuelGenerator set, its working process is mainly to inject diesel into the combustion chamber accurately and timely, and the compressed air in the combustion chamber must reach a sufficient temperature for complete combustion. To meet the above two conditions, the diesel engine must have a high enough speed and a corresponding temperature in the cylinder when starting, so that the diesel generator set can work. When the diesel generator set cannot start, we must pay attention to observation in order to determine what is causing the diesel generator set to fail to start. Below, Haixing Power will introduce to you several common diesel generator sets that cannot start. problem.

1. When starting, you only hear the 'clucking' sound of the starter electromagnetic switch, or when starting for the first time, the starter drives the crankshaft to rotate slowly for a few times, and then there is a 'clucking' sound of the starter electromagnetic switch, but the crankshaft does not rotate. This phenomenon generally belongs to the 'broken grid' fault of the battery.

2. It can start every time when it is temporarily parked, but it can only make the crankshaft rotate once when it is parked for a long time or when it is started the next day. This phenomenon indicates that the battery has serious self-discharge and its plates and separators are seriously aged, indicating that the battery is close to scrap.

3. The starter suddenly rotates weakly during startup, and is accompanied by the smell of burning rubber or smoke coming out of the battery. This is mostly due to poor contact between the poles and pole clamps, resulting in heat damage.

4. If the starter drive gear and the engine flywheel ring gear make an idling sound when starting, there are two reasons: first, the meshing surface of the flywheel ring gear is deformed; second, the gap between the starter drive gear and the flywheel ring gear is too large. . The two cannot mesh and the engine cannot start.

5. As soon as the main power switch is turned on, the starter drive gear meshes with the flywheel ring gear and rotates together. When this kind of fault occurs, firstly, the holding coil of the starter electromagnetic switch is wrongly connected to the power terminal; secondly, the three wires on the key switch are wrongly connected. The judgment method is: start the engine when the key is in the '0' position. The driving gear does not rotate. When it is in the '2' position, the starting motor driving gear meshes with the flywheel ring gear and rotates together.

6. The engine cannot start when the start switch is turned to the start position, and there are no other phenomena. For this kind of failure, firstly, the key and switch are not connected to the starting circuit due to wear; secondly, the starter relay is not connected to the starter electromagnetic switch circuit; thirdly, the power switch is not connected to the main circuit.

7. There is only a slight 'click' sound when starting, but there is no response. This is caused by the starting relay being stuck. At this time, just press the tail of the electromagnet to force the electromagnet to move forward, and the starting circuit can be connected to start the engine.

It can be seen that when the diesel generator set cannot start, we should look for the cause from the aspects of starting work, diesel generator set fuel supply system and compression. Then pay attention to observe various phenomena when it cannot start, so that we can determine the specific factors and solve the problem of failure to start in a timely manner.