柴油發(fā)電機(jī)拉缸可能有那些原因造成？

1,機(jī)油有問題
2，溫度高，散熱不行
3，超負(fù)荷

六缸柴油發(fā)電機(jī)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(jī)油散熱器堵塞，水箱堵塞，水箱缺水，水泵壞，超負(fù)荷，缺機(jī)油，機(jī)油泵壞。

柴油機(jī)油底殼機(jī)油里進(jìn)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(jī)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(hù)發(fā)電機(jī)不過勵磁，正常情況下，現(xiàn)代技術(shù)下， 發(fā)電機(jī)定轉(zhuǎn)子利用率比較高，磁通量正常運(yùn)行中接近飽和狀態(tài)， 而磁通與V/F成正比，一旦發(fā)電機(jī)磁通飽和，發(fā)電機(jī)勵磁電流將急劇增加，損耗加大，會導(dǎo)致電機(jī)過熱，燒毀電機(jī)，為保證磁通在運(yùn)行的上限不至于飽和， 一般在勵磁系統(tǒng)里設(shè)置壓頻限制（保護(hù)），發(fā)變組保護(hù)里設(shè)壓頻平保護(hù)，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(jī)輸出電壓電流，調(diào)節(jié)勵磁電流的導(dǎo)通角，從而維持發(fā)電機(jī)輸出的穩(wěn)定。

發(fā)電機(jī)并列后，增大有功、無功負(fù)荷時受什么因素的限制？

發(fā)電機(jī)并列后，有功負(fù)荷增長速度決定于原動機(jī)，汽輪發(fā)電機(jī)便要根據(jù)機(jī)、爐的情況逐漸增加負(fù)荷。
突然增加負(fù)荷時，先是線圈發(fā)熱，而導(dǎo)體或絕緣體的發(fā)熱需要一個過程，并不是立即能達(dá)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(shè)計發(fā)電機(jī)時是經(jīng)過計算的如果突然帶負(fù)荷不超過額定電流的50%—70%，問題不是很大，否則會出現(xiàn)轉(zhuǎn)子導(dǎo)體的殘余變形。

美國卡特彼勒柴油發(fā)動機(jī)工作6200小時需要大修嗎？

是不是燒機(jī)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(jī)和市電怎樣轉(zhuǎn)換？

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

柴油機(jī)在高速或大負(fù)荷運(yùn)轉(zhuǎn)時，立刻熄火會帶來什么危害？

柴油機(jī)高速或者大負(fù)荷運(yùn)轉(zhuǎn)后，立刻熄火，后續(xù)操作不同，會導(dǎo)致的結(jié)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(fù)荷變化導(dǎo)致的巨大熱應(yīng)力，也會導(dǎo)致燃燒室部件，例如缸頭、水套、活塞等出現(xiàn)裂紋，影響機(jī)器的安全運(yùn)轉(zhuǎn)或者壽命！
合理的操作，應(yīng)該是逐步減少負(fù)荷，最后空載運(yùn)轉(zhuǎn)一段時間，讓機(jī)器的燃燒室部件和軸承逐漸降溫，最后再停機(jī)，這樣有利于降低機(jī)器的熱應(yīng)力，保證機(jī)器安全運(yùn)轉(zhuǎn)和延長機(jī)器使用壽命。

兩臺發(fā)電機(jī)并網(wǎng)單獨(dú)供電，與市電無關(guān)，請教控制柜與發(fā)電機(jī)應(yīng)該如何接線？

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

沃爾沃柴油發(fā)動機(jī)怎么打不著火？

柴油發(fā)動機(jī)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(yīng)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(zhuǎn)速和氣缸壓力?？傊裼桶l(fā)動機(jī)工作必須滿足他工作的條件，足夠的轉(zhuǎn)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(dāng)然正式和供油時間必須正確！

沃爾沃柴油發(fā)動機(jī)供油原理是什么？

沃爾沃柴油發(fā)動機(jī)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(jī)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(jìn)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(yīng)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(yīng)該是故障點(diǎn)，重點(diǎn)查找。

康明斯發(fā)動機(jī)組電磁閥故障怎么檢查？

電磁閥拆下來  用蓄電池 正負(fù)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(jī)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(diǎn) ,  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(yīng)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(jī)冒黑煙通常都是柴油燃燒不好，還有進(jìn)氣方面有問題，增壓器也有可能造成，你的增壓器是新的，進(jìn)氣慮也是新的，那就應(yīng)該只有柴油泵跟油嘴有問題了，

康明斯發(fā)動機(jī)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(guān)，主要檢查進(jìn)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(yùn)轉(zhuǎn)正常，當(dāng)然燃油系統(tǒng)也有可能

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

很可能就是機(jī)油冷卻器安裝有問題，機(jī)油冷卻器與機(jī)體連接部位有一個橡膠密封圈，應(yīng)該是這個圈不夠緊造成的機(jī)油進(jìn)入水道。因為機(jī)油壓力大過水的壓力，所以只會是機(jī)油進(jìn)入水里面。測算密封圈的厚度時應(yīng)該加入機(jī)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(jī)大修后機(jī)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(jī)油泵、機(jī)油品質(zhì)、氣門幾個主要的影響油壓的因素，機(jī)油壓力表建議裝機(jī)械式的做觀察用比較準(zhǔn)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.