KANGMINGSI 500KW Gas 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 Mode	Power	*BoreStroke**	Ylinder No.	Dimensions	Weight
XSA20GFNG	20/25	22/27.5	4B3.9T	25	102*120	4	15606501140	780
XSA25GFNG	25/31.25	27.5/34.375	4BT3.9T	30	102*120	4	16506501150	820
XSA30GFNG	30/37.5	33/41.25	4BT3.9T	38	102*120	4	17508001150	840
XSA40GFNG	40/50	44/55	4BTA3.9T	58	102*120	4	19006701200	930
XSA50GFNG	50/62.5	55/68.75	4BTA3.9T	58	102*120	4	21007701300	1200
XSA60GFNG	60/75	66/82.5	6BT5.9T	68	102*120	6	22008001400	1250
XSA80GFNG	80 /100	88/110	6BTA5.9T	85	102*120	6	22007901400	1330
XSA100GFNG	100/125	110/137.5	6BTAA5.9T	132	102*120	6	24008301410	1380
XSA120GFNG	120/150	132/165	6CTA8.3T	132	114*135	6	24808601430	1750
XSA150GFNG	150/187.5	165/206.25	6LTAA8.9T	170	114*135	6	26609601450	1960
XSA200GFNG	200/250	220/275	NT855T	230	140*152	6	300010501750	2810
XSA250GFNG	250/312.5	275/343.75	NTA855T1	280	140*152	6	330010501750	2910
XSA300GFNG	300/375	330/412.5	KTA19T	340	159*159	6	360013001910	3800
XSA400GFNG	400/500	440/550	KT38T	460	159*159	12	370O15502050	3970
XSA500GFNG	500/625	550/687.5	KTA38T1	560	159*159	12	420018002250	6780
XSA600GFNG	600/750	660/825	KTA50T1	700	159*159	16	514018502430	9000
XSA700GFNG	700/875	770/962.5	KTA50T2	820	159*159	16	520019002430	9500
XSA800GFNG	800/1000	880/1100	KTA50T3	900	159*159	16	525019002430	10500
XSA1000GFNG	1000/1250	1100/1375	KTA50T4	1200	159*159	16	530019502430	11000

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