柴油发电机拉缸可能有那些原因造成？

柴油发电机拉缸可能有那些原因造成？

1,机油有问题
2，温度高，散热不行
3，超负荷

六缸柴油发电机升温快什么原因，怎样解决？

节温器坏，油泵供油时间不对，机油散热器堵塞，水箱堵塞，水箱缺水，水泵坏，超负荷，缺机油，机油泵坏。

柴油机油底壳机油里进了柴油是什么原因造成的？怎么解决？

有两种原因。一个是油头不工作。气缸压力没有。还有一个是油泵内漏。

发电机投同期时“励磁调节器VF限制动作”是什么意思？对并网有什么影响？

vf限制，就是压频限制， 目的是保护发电机不过励磁，正常情况下，现代技术下， 发电机定转子利用率比较高，磁通量正常运行中接近饱和状态， 而磁通与V/F成正比，一旦发电机磁通饱和，发电机励磁电流将急剧增加，损耗加大，会导致电机过热，烧毁电机，为保证磁通在运行的上限不至于饱和， 一般在励磁系统里设置压频限制（保护），发变组保护里设压频平保护，一般情况下压频定值不会超过1.2的。它对电网到时没什么影响

自动励磁调节器AVR的作用？

简单地说，AVR的作用就是根据发电机输出电压电流，调节励磁电流的导通角，从而维持发电机输出的稳定。

发电机并列后，增大有功、无功负荷时受什么因素的限制？

发电机并列后，有功负荷增长速度决定于原动机，汽轮发电机便要根据机、炉的情况逐渐增加负荷。
突然增加负荷时，先是线圈发热，而导体或绝缘体的发热需要一个过程，并不是立即能达到允许的温度；发热就要膨胀，不同的材料膨胀能力不同，在设计发电机时是经过计算的如果突然带负荷不超过额定电流的50%—70%，问题不是很大，否则会出现转子导体的残余变形。

美国卡特彼勒柴油发动机工作6200小时需要大修吗？

是不是烧机油！动力有没有下降！大修不是到时间就大修，而是取决于工作情况而定的！

发电机和市电怎样转换？

当市电消失时，有专门的检测电路在一分钟后起动发电机，达到额定转速和额定电压后，由双电源切换开关或是手动，由发电机向系统供电。
当市电恢复时，检测回路在30秒后向双电源开关发出指令，断开发电机电源，接通市电电源，同时让发电机停机。或是检测回路发出信号，让手动完成上述步骤。

柴油机在高速或大负荷运转时，立刻熄火会带来什么危害？

柴油机高速或者大负荷运转后，立刻熄火，后续操作不同，会导致的结果页不同！
熄火后，如果做不到保持滑油或者冷却水继续循环的话，那么直接的后果就是咬缸或者抱瓦
即使能做到继续保持滑油冷却水继续循环，可以避免咬缸抱瓦，长此以往，剧烈的热负荷变化导致的巨大热应力，也会导致燃烧室部件，例如缸头、水套、活塞等出现裂纹，影响机器的安全运转或者寿命！
合理的操作，应该是逐步减少负荷，最后空载运转一段时间，让机器的燃烧室部件和轴承逐渐降温，最后再停机，这样有利于降低机器的热应力，保证机器安全运转和延长机器使用寿命。

两台发电机并网单独供电，与市电无关，请教控制柜与发电机应该如何接线？

两台发电机单独并网供电，和发电机并大网是一样的连接，1台相当于大网，另1台就是并网机。

沃尔沃柴油发动机怎么打不着火？

柴油发动机在无法启动时，不管是欧二还是欧三，故障排除的方法都一样，先看低压管路是不是有空气，要有应排气，低压没空气看看能不能喷入到气缸，不能就检查高压泵，喷油器和电脑，要能就看转速和气缸压力。总之，柴油发动机工作必须满足他工作的条件，足够的转速和足够的压缩比，再者就是柴油要很好的雾状喷入气缸，当然正式和供油时间必须正确！

沃尔沃柴油发动机供油原理是什么？

沃尔沃柴油发动机是高压共轨 是指在高压油泵、压力传感器和电子控制单元(ECU)组成的闭环系统中,将喷射压力的产生和喷射过程彼此完全分开的一种供油方式。

沃尔沃柴油机油路不通，油泵不出油是怎么回事？

油路一般分高压油路和低压油路。从油箱出来，先经过低压油路，然后加压后进入高压油路，最后完成喷油过程。油泵不出油，一方面怀疑油泵损坏，还有应该从高压向低压油路反向查找，直到见到出油，在出油与不出油之间，就应该是故障点，重点查找。

康明斯发动机组电磁阀故障怎么检查？

电磁阀拆下来  用蓄电池 正负极相接  有哒哒响 说明就是良好的  没有声音就坏了。

康明斯发动机仅6缸活塞和缸套磨损，其它缸正常，轴瓦也正常，一般什么原因？

6缸 缸套磨损 是有2种原因  1  高温  第6缸的温度是要比前几个要高点 ,  2  润滑  6缸的 供油压力是最低的 ,  要是只有缸套磨损  轴瓦都还好  应该是 水温过高的原因

康明斯大修后没劲怎么回事？

发动机冒黑烟通常都是柴油燃烧不好，还有进气方面有问题，增压器也有可能造成，你的增压器是新的，进气虑也是新的，那就应该只有柴油泵跟油嘴有问题了，

康明斯发动机气压不够打不开增压器，上坡有大量黑烟无力怎么办？

冒烟 跟打不开增压器旁通阀基本无关，主要检查进气系统是不是有泄漏，空气滤清器，还有就是增压器是不是运转正常，当然燃油系统也有可能

重发NTA855发动机水箱冒机油，可机油里面却没水，刚中修过，机油冷却器也是换新的？

很可能就是机油冷却器安装有问题，机油冷却器与机体连接部位有一个橡胶密封圈，应该是这个圈不够紧造成的机油进入水道。因为机油压力大过水的压力，所以只会是机油进入水里面。测算密封圈的厚度时应该加入机油冷却器垫的厚度，而且不要涂太厚的密封胶，均匀的一层胶膜就行，因为密封胶在受热之后会稀释，垫子也会变软，使紧固螺丝变得不紧，密封圈也就不紧了，所以在热车之后对用了垫子的地方的螺丝全面紧固（包括气缸垫）是很有必要的。

康明斯 NTA855发动机大修后机油压力太低-的故障原因分析与处理原因？

包括曲轴、曲轴瓦、机油泵、机油品质、气门几个主要的影响油压的因素，机油压力表建议装机械式的做观察用比较准确。

Diesel engines cylinder may be the cause?

1, there is something wrong with the engine oil

2, high temperature, heat no

3, overload

Six-cylinder diesel generator warming faster what reason, how to solve?

Thermostat bad, wrong pump fuel supply time, the oil radiator blockage, blocking water tanks, water tanks, water shortage water pump, overload, short of oil, the oil pump is bad.

In the engine oil sump oil into diesel is what reason is caused? How to solve?

There are two reasons. One is oil head will not work. Cylinder pressure. There is a leak is inside the pump.

Generators are cast in the same period when "excitation regulator of VF limit action" is what mean? The grid what effect?

Vf limit, is the voltage and frequency limits, the purpose is to protect the generator excitation, however, under normal circumstances, the modern technology, the rotor of the generator stator utilization is higher, the normal operation of magnetic flux in the close to the saturated state, and the magnetic flux is proportional to the V/F, once the generator magnetic flux saturation, generator excitation current will increase sharply, loss increase, lead to motor overheating and burning motor, in order to ensure the magnetic flux in the operation of the cap not saturated, generally set voltage and frequency limits in the excitation system (protect), a variable group set voltage and frequency in the flat of protection protection, generally down frequency setting value of not more than 1.2. It then nothing of power grids affected

The role of automatic excitation regulator AVR?

In simple terms, the role of the AVR is according to the generator output voltage and current, adjust the excitation current of the conduction Angle, so as to maintain the stability of the generator output.

Juxtaposed with the generator, increasing the active, reactive load is limited by what factors?

Generator parallel, the active load growth depends on the engine, steam turbine generator is depending on the machine, furnace, gradually increasing the load.

Sudden increase in load, first heating coil, and a conductor or an insulator of heat needs a process, not immediately to allow temperature; Fever is about to expand, capacity of different materials for different, when designing generator is calculated if sudden load is not more than 50% - 70% of the rated current, the problem is not very big, can appear otherwise residual deformation of the rotor conductors.

The caterpillar diesel engines are in need of major repair work 6200 hours?

Oil is burning! Have power down! Overhaul is not time to repair, but depends on the availability of work!

Generator and mains switch?

When mains disappear, have special detection circuit starter generator after a minute, after reaching the rated speed and rated voltage, the double power toggle switch or a manual, power from the generator to the system.

When mains recovery, the detection circuit in 30 seconds issue instructions to double the power switch, disconnect the generator power supply, turn on the mains supply, at the same time let the generator outage. Or signal detection circuit to manually complete the above steps.

Diesel engine when running at high speed or large capacity, sputter can bring what harm?

After high speed or large load operation of diesel engine, immediately shut down, the subsequent operation is different, can lead to the results page is different!

After flameout, if they do not keep lubricating oil or cooling water circulation, the direct consequence is bit cylinder or tile

Even if can continue to keep lubricating oil cooling water circulation, can avoid seizuring embrace, in the long run, intense heat load changes lead to the huge thermal stress, can also lead to the combustion chamber components, such as cylinder head, jacket, crack of piston and so on, affect the safety of machine operation or life!

Reasonable operation, should be gradually reduce the load, the no-load running for a period of time, let the machine of the combustion chamber components and bearing cooling, then goes down, it can lower the thermal stress of the machine, ensure the safety of the machine operation and prolong the service life of machine.

Two generator interconnection power alone, has nothing to do with the mains, consult how should control cabinet and the generator connection?

Two generator interconnection power alone, and generator is the same and net connection, 1 is equal to the net, the other one is hooked up to the machine.

How do I call Volvo diesel engine was not on fire?

When diesel engine cannot be started, either the second or the third, troubleshooting methods are the same, look at the low pressure pipeline is there air, want to have should exhaust, low pressure, didn't see can spray into the air cylinder can't check the high-pressure pump, injector and computers that need to be able to see rotate speed and cylinder pressure. Anyhow, diesel engine work must satisfy his work conditions, adequate enough speed and compression ratio, moreover is the diesel to fine mist spray into the cylinder, of course, the formal and the delivery time must be correct!

Volvo diesel engine oil supply principle is what?

Volvo is refers to the high pressure common rail diesel engine high pressure oil pump, pressure sensors and electronic control unit (ECU) in the closed-loop system, the injection pressure and injection process completely separated from each other a way of oil supply.

Volvo diesel engine oil, oil pump out is how to return a responsibility?

Oil in general points, high pressure oil pipe and low pressure oil. Out of the tank, after low pressure oil first, then after pressure into the high pressure oil pipe, finally complete the injection process. Pump out oil, on the one hand, doubt oil pump is damaged, and should be from high pressure to low pressure oil pipe reverse lookup, until meet the oil, the oil and no oil, it should be the failure point, key lookup.

Cummins engine unit check electromagnetic valve failure?

Solenoid valve removed battery is negative connect account have a little ring is good no sound is bad.

Cummins engine only six cylinder piston and cylinder liner wear, cylinder is normal, other bush also is normal, what reason?

6 there are two reasons 1 cylinder liner wear is high temperature 6 cylinder temperature is high than a few, 2 of 6 cylinder lubrication oil pressure is the lowest, if only the cylinder liner wear bushing should be well water temperature too high

Cummins overhaul after boring how to return a responsibility?

Diesel engine smoke usually are bad, and inlet side has a problem, the supercharger is also likely to cause, you of the supercharger is new, between the air intake is new, it should only diesel pump and nozzle has a problem,

Cummins engine air pressure not enough can't open the supercharger, hill have a lot of black smoke is unable to do?

Smoking has nothing to do with can't open the supercharger by-pass valve base, the main check if air intake system for leaks, the air filter, and the turbocharger is operating normally, fuel system, of course, it is also possible

Resend NTA855 diesel engine water tank at the oil, but the oil inside do not have water, just to repair, the new oil cooler is also change?

May be there is something wrong with the oil cooler installation, oil cooler connected with the body parts have a rubber sealing ring, should be caused by the circle is not tight enough oil into waterways. Because the oil pressure is greater than the pressure of the water, so are the oil into the water. When measuring the thickness of the sealing ring should be added to the thickness of the oil cooler pad, and don't apply too thick sealant, even just a layer of film, because the sealant would dilute after heating, the mat will become soft, the fastening screw is not tight, the seal is not tight, so in a hot car for the cushion place fully tighten the screw (including cylinder pad) is necessary.

Cummins NTA855 diesel engine overhaul after the engine oil pressure is too low - and process analysis of the causes of the failure reason?

Including the crank shaft, crankshaft, oil pump, valve, oil quality of several major factors, which affect the oil pressure, oil pressure gauge suggest install mechanical do observe more accurately.