柴油發(fā)電機拉缸可能有那些原因造成？

1,機油有問題
2，溫度高，散熱不行
3，超負荷

六缸柴油發(fā)電機升溫快什么原因，怎樣解決？

節(jié)溫器壞，油泵供油時間不對，機油散熱器堵塞，水箱堵塞，水箱缺水，水泵壞，超負荷，缺機油，機油泵壞。

柴油機油底殼機油里進了柴油是什么原因造成的？怎么解決？

有兩種原因。一個是油頭不工作。氣缸壓力沒有。還有一個是油泵內(nèi)漏。

發(fā)電機投同期時“勵磁調(diào)節(jié)器VF限制動作”是什么意思？對并網(wǎng)有什么影響？

vf限制，就是壓頻限制， 目的是保護發(fā)電機不過勵磁，正常情況下，現(xiàn)代技術下， 發(fā)電機定轉子利用率比較高，磁通量正常運行中接近飽和狀態(tài)， 而磁通與V/F成正比，一旦發(fā)電機磁通飽和，發(fā)電機勵磁電流將急劇增加，損耗加大，會導致電機過熱，燒毀電機，為保證磁通在運行的上限不至于飽和， 一般在勵磁系統(tǒng)里設置壓頻限制（保護），發(fā)變組保護里設壓頻平保護，一般情況下壓頻定值不會超過1.2的。它對電網(wǎng)到時沒什么影響

自動勵磁調(diào)節(jié)器AVR的作用？

簡單地說，AVR的作用就是根據(jù)發(fā)電機輸出電壓電流，調(diào)節(jié)勵磁電流的導通角，從而維持發(fā)電機輸出的穩(wěn)定。

發(fā)電機并列后，增大有功、無功負荷時受什么因素的限制？

發(fā)電機并列后，有功負荷增長速度決定于原動機，汽輪發(fā)電機便要根據(jù)機、爐的情況逐漸增加負荷。
突然增加負荷時，先是線圈發(fā)熱，而導體或絕緣體的發(fā)熱需要一個過程，并不是立即能達到允許的溫度；發(fā)熱就要膨脹，不同的材料膨脹能力不同，在設計發(fā)電機時是經(jīng)過計算的如果突然帶負荷不超過額定電流的50%—70%，問題不是很大，否則會出現(xiàn)轉子導體的殘余變形。

美國卡特彼勒柴油發(fā)動機工作6200小時需要大修嗎？

是不是燒機油！動力有沒有下降！大修不是到時間就大修，而是取決于工作情況而定的！

發(fā)電機和市電怎樣轉換？

當市電消失時，有專門的檢測電路在一分鐘后起動發(fā)電機，達到額定轉速和額定電壓后，由雙電源切換開關或是手動，由發(fā)電機向系統(tǒng)供電。
當市電恢復時，檢測回路在30秒后向雙電源開關發(fā)出指令，斷開發(fā)電機電源，接通市電電源，同時讓發(fā)電機停機?；蚴菣z測回路發(fā)出信號，讓手動完成上述步驟。

柴油機在高速或大負荷運轉時，立刻熄火會帶來什么危害？

柴油機高速或者大負荷運轉后，立刻熄火，后續(xù)操作不同，會導致的結果頁不同！
熄火后，如果做不到保持滑油或者冷卻水繼續(xù)循環(huán)的話，那么直接的后果就是咬缸或者抱瓦
即使能做到繼續(xù)保持滑油冷卻水繼續(xù)循環(huán)，可以避免咬缸抱瓦，長此以往，劇烈的熱負荷變化導致的巨大熱應力，也會導致燃燒室部件，例如缸頭、水套、活塞等出現(xiàn)裂紋，影響機器的安全運轉或者壽命！
合理的操作，應該是逐步減少負荷，最后空載運轉一段時間，讓機器的燃燒室部件和軸承逐漸降溫，最后再停機，這樣有利于降低機器的熱應力，保證機器安全運轉和延長機器使用壽命。

兩臺發(fā)電機并網(wǎng)單獨供電，與市電無關，請教控制柜與發(fā)電機應該如何接線？

兩臺發(fā)電機單獨并網(wǎng)供電，和發(fā)電機并大網(wǎng)是一樣的連接，1臺相當于大網(wǎng)，另1臺就是并網(wǎng)機。

沃爾沃柴油發(fā)動機怎么打不著火？

柴油發(fā)動機在無法啟動時，不管是歐二還是歐三，故障排除的方法都一樣，先看低壓管路是不是有空氣，要有應排氣，低壓沒空氣看看能不能噴入到氣缸，不能就檢查高壓泵，噴油器和電腦，要能就看轉速和氣缸壓力?？傊?，柴油發(fā)動機工作必須滿足他工作的條件，足夠的轉速和足夠的壓縮比，再者就是柴油要很好的霧狀噴入氣缸，當然正式和供油時間必須正確！

沃爾沃柴油發(fā)動機供油原理是什么？

沃爾沃柴油發(fā)動機是高壓共軌 是指在高壓油泵、壓力傳感器和電子控制單元(ECU)組成的閉環(huán)系統(tǒng)中,將噴射壓力的產(chǎn)生和噴射過程彼此完全分開的一種供油方式。

沃爾沃柴油機油路不通，油泵不出油是怎么回事？

油路一般分高壓油路和低壓油路。從油箱出來，先經(jīng)過低壓油路，然后加壓后進入高壓油路，最后完成噴油過程。油泵不出油，一方面懷疑油泵損壞，還有應該從高壓向低壓油路反向查找，直到見到出油，在出油與不出油之間，就應該是故障點，重點查找。

康明斯發(fā)動機組電磁閥故障怎么檢查？

電磁閥拆下來  用蓄電池 正負極相接  有噠噠響 說明就是良好的  沒有聲音就壞了。

康明斯發(fā)動機僅6缸活塞和缸套磨損，其它缸正常，軸瓦也正常，一般什么原因？

6缸 缸套磨損 是有2種原因  1  高溫  第6缸的溫度是要比前幾個要高點 ,  2  潤滑  6缸的 供油壓力是最低的 ,  要是只有缸套磨損  軸瓦都還好  應該是 水溫過高的原因

康明斯大修后沒勁怎么回事？

發(fā)動機冒黑煙通常都是柴油燃燒不好，還有進氣方面有問題，增壓器也有可能造成，你的增壓器是新的，進氣慮也是新的，那就應該只有柴油泵跟油嘴有問題了，

康明斯發(fā)動機氣壓不夠打不開增壓器，上坡有大量黑煙無力怎么辦？

冒煙 跟打不開增壓器旁通閥基本無關，主要檢查進氣系統(tǒng)是不是有泄漏，空氣濾清器，還有就是增壓器是不是運轉正常，當然燃油系統(tǒng)也有可能

重發(fā)NTA855發(fā)動機水箱冒機油，可機油里面卻沒水，剛中修過，機油冷卻器也是換新的？

很可能就是機油冷卻器安裝有問題，機油冷卻器與機體連接部位有一個橡膠密封圈，應該是這個圈不夠緊造成的機油進入水道。因為機油壓力大過水的壓力，所以只會是機油進入水里面。測算密封圈的厚度時應該加入機油冷卻器墊的厚度，而且不要涂太厚的密封膠，均勻的一層膠膜就行，因為密封膠在受熱之后會稀釋，墊子也會變軟，使緊固螺絲變得不緊，密封圈也就不緊了，所以在熱車之后對用了墊子的地方的螺絲全面緊固（包括氣缸墊）是很有必要的。

康明斯 NTA855發(fā)動機大修后機油壓力太低-的故障原因分析與處理原因？

包括曲軸、曲軸瓦、機油泵、機油品質、氣門幾個主要的影響油壓的因素，機油壓力表建議裝機械式的做觀察用比較準確。

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.