250kW Silent generator set_Shandong Xujiujiu Power Technology Co., Ltd.

Reasons and solution of generator

 Time of issue: : 2021-12--07

The generator is difficult to start. There are dozens of reasons for generator start failure. The following will introduce the reasons that cause the generator to be unable to start or difficult to start。 White smoke from the exhaust pipe when starting Analysis of causes （1）Problems with the ventilation system,wrong valve clearance, valve seal deterioration, the air filter is seriously blocked, forget to pull the decompression handle back （2）Problems with oil supply system, poor diesel quality, water in diesel tank; air in oil road, low pressure oil road blocked, inlet throttle filter blocked, too dirty filter element, tank cover vent blocked, resulting in insufficient oil supply; oil supply time is early or too late. （3）Problems with engine body: cylinder head crack, cylinder pad is installed or burned at the end, causing water directly into the cylinder, such as cylinder, piston and piston ring gap, serious wear or stuck, engine starting device, such as low starting speed,low temperature or low engine temperature ,especially in winter. 2. Find and troubleshoot Generally, first check whether there is air or blockage in the low-pressure oil circuit, check the fuel delivery pump, and then check the high-pressure oil circuit and fuel injection pump. If there is no problem with the above inspection results, then check the fuel injector, ventilation system, crank and connecting rod mechanism, and engine block in turn. Wait. （1）If it is in winter or the starting temperature is particularly low, you can try to heat water into the water tank, or drain the oil from the oil pan, and then pour it back after heating. （2）If it is difficult to start. First, check whether the air filter, fuel filter, and diesel filter are too dirty, and then check the matching clearances, such as the clearances of cylinders, pistons and piston rings, and valve clearances, and then check the fuel injectors and fuel injection pumps. 3.Black smoke rises from the exhaust pipe when startup When the fuel and air mixture burns incompletely and the diesel fuel in the mixture is too rich, the unburned mixture is discharged as black smoke. analysis of causes Problems with the ventilation system: the air filter is blocked, which reduces the air entering the cylinder, and the mixed gas is thick; the valve gap is incorrect, resulting in insufficient intake and unclean exhaust,insufficient spring force of the valve spring or spring break, causing the valve to lea,There is carbon deposit and ablation between the valve and the valve seat, causing the valve to leak. Problems with the fuel supply system: one or more fuel injectors have serious carbon deposits, and the needle valves of the fuel injectors are stuck, resulting in oil dripping or poor atomization quality,insufficient fuel injection pressure, poor diesel atomization quality, and fuel supply ahead of schedule The angle is wrong,the fuel injection pump sprays too much, the quality of diesel is not good. The crank connecting rod mechanism has problems: if the clearance between the cylinder, the piston and the piston ring is too large or the wear is serious, the cylinder pressure is insufficient, and the combustion is incomplete. Find and troubleshoot The fault can be solved by referring to the above method of finding and excluding white smoke.Special attention should be paid to the cylinder-by-cylinder inspection method. Smokeless exhaust pipe when starting analysis of causes Problems with the oil supply system: the oil road is blocked, the oil transmission pump is not working normally, and the oil injection pump is not working normally. 6.Find and troubleshoot （1）If the diesel engine start speed is normal but not fire, or the exhaust pipe is smoke-free, it is a failure of the engine oil supply system.Generally, first check whether the oil road is blocked, check the specific method of the oil road blockage, see the above. （2）If there is occasional intermittent smoke coming out when starting, it means that some cylinders have diesel oil in, and some do not. In this case, the "cut-off method" can be used, that is, to stop the fuel supply of each cylinder and find out that it is not working. Of the cylinder.

Gensets Model	Power		Engine				Dimensions	Weight
Gensets Model	Rated Power	Standby Power	Engines Model	Power	*BoreStroke**	ylinder No.	Dimensions	Weight
XSAC20GF	20/25	22/27.5	4B3.9-G2	24	102*120	4	15806501146	750
XSAC30GF	30/37.5	33/41.25	4BT3.9-G2	36	102*120	4	18007301290	750
XSAC40GF	40/50	44/55	4BTA3.9-G2	50	102*120	4	19007831257	800
XSAC50GF	50/62.5	55/68.75	4BTA3.9-G2	50	102*120	4	19007831257	800
XSAC75GF	75/93.75	82.5/103.125	6BT5.9-G2	86	102*120	6	22008301278	1000
XSAC80GF	80/100	88/110	6BT5.9-G	92	102*120	6	22008301278	1000
XSAC100GF	100/125	110/137.5	6BTA5.9-G2	106	102*120	6	22008301325	1200
XSAC120GF	120/150	132/165	6BTAA5.9-G2	120	102*120	6	23608301334	1200
XSAC120GF	120/150	132/165	6CT8.3-G2	133	114*135	6	23608471366	1200
XSAC150GF	150/187.5	165/206.25	6CTA8.3-G2	163	114*135	8	23608471366	1400
XSAC180GF	180/225	198/247.5	6CTAA8.3-G2	185	1144135	6	24009801460	1400
XSAC200GF	200/250	220/275	6LTAA8.9-G2	220	114*145	6	254010181527	2600
XSAC250GF	250/312.5	275/343.75	NTA855-G1A	261	140*152	6	300010541758	2810
XSAC250GF	250/312.5	275/343.75	MTAA11-G3	282	125*147	6	300011401600	2800
XSAC280GF	280/350	308/385	NTA855-G4	317	140*152	8	300010541758	3000
XSAC300GF	300/375	330/412.5	NTA855-G2A	343	140*152	6	325011201721	2800
XSAC320GF	320/400	352/440	NTAA855-G7A	360	140*152	6	325011201721	3000
XSAC360GF	360/450	396/495	KTA19-G3	408	159*159	8	335012801934	4200
XSAC400GF	400 /500	440/550	KTA19-G4	450	159*159	6	335012801934	4600
XSAC450GF	450/562.5	495/618.75	KTAA19-G5	504	159*159	6	352515502032	5000
XSAC480GF	480/600	528/660	KTA19-G8	518	159*159	6	352515502032	4750
XSAC500GF	500/625	550/687.5	KTAA19-G6A	550	159*159	6	352515502032	5500
XSAC582GF	582/727.5	640.2/800.25	KTA38-GA	640	159*159	12	420018052383	8000
XSAC600GF	600/750	660/825	KTA38-G2	665	159*159	12	420018052383	8000
XSAC650GF	650/812.5	715/893.75	KTA38-G2B	711	159*159	12	420018052383	8500
XSAC750GF	750/937.5	825/1031.25	KTA38-G2A	814	159*159	12	420018052383	8500
XSAC800GF	800 /1000	880/1100	KTA38-G5	881	159*159	12	420018052244	9500
XSAC910GF	910/1137.5	1001/1251.25	KTA38-G9	990	159*159	12	435020902178	9400
XSAC1000GF	1000/1250	1100/1375	KTA50-G3	1115	159*159	16	500018502343	10120
XSAC1120GF	1120/1400	1232/1540	KTA50-G8	1200	159*159	16	520022602510	10600
XSAC1200GF	1200/1500	1320/1850	KTA50-GS8	1287	159*159	18	520022802510	11000

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