October 1, 2022
The author of this article
Life is so difficult from the gap between my fingers, so cherish it. Next, I still like to use imperfect words to record the things I posted about my sailing career in New York not long ago..., share it with my fans and friends who follow me!
New York City
Statue of Liberty
First came to New York, although I couldn't shuttle through the bustling crowds and feel the fireworks of the hardcore capitalist society , I was lucky to see the style of the Statue of Liberty from afar on the way. Even the deputy driving the boat called and said excitedly that the Statue of Liberty has arrived, come out and see it!
I remember when I was a student in my early years, the song " million times asked " made the young man who had just started to feel passionate. His impression of the city of New York is always blurred in the big-word title of the TV series "Beijing People in New York". The deeper impression is the "rolling wolf smoke" of the 911 World Trade Center in the early 21st century. I remember this explosive news the clearest. Due to the Internet blanks and news information in rural and township high schools in the late 1990s, the second morning of the next night was the opening ceremony of the high school second year on the playground. I learned about this incident from the teacher's mouth. I felt that this kind of news is really far away from us high school students. There was a ghost crying and howling on the cliff of lifeline to survive, but here I watched the TV station play back and forth special effects scenes that only American Hollywood blockbusters could have.
Life is really unpredictable. Who would have thought that 21 years later, under the shadow of the global epidemic era without a conclusion, I hurriedly left a trail here... After the car approached the port, I found that the port was next to the New York Civil Aviation Airport detour and terminal. The plane took off and landed so close to the lined central city of New York. Looking at the United plane hovering over New York, I really felt a lot of worries for New York City...!
New York departs from port to speed, ECS low insulation Alarm
Imagine if I had been docked in New York, USA three years ago, the company paid to arrange transportation vehicles to go down to supermarkets to shop, eat and drink, shop shopping, live ammunition shooting, and visit film and television cities. Especially, the staff on duty at the deck department always watched the cabin staff go down one after another with their envious light, and probably filled their stomachs with jealousy and complaints!
Hedong has been transferred to Hexi in just three years. It should be more appropriate to describe our current life as a different person. The US Immigration Bureau has already issued your login certificate to you. People open their minds and lie flat to welcome you to go down for entertainment and consumption. Unfortunately, we Chinese are very obedient. The Asian bosses are honest with me. The violators are punished, and no one dares to move. I have to say that in different historical periods, the working people in China are the most obedient. I am not afraid of anything... I will do whatever you want if you don't accept life and death. Maybe it's just a self-comfortable word!
Tell me about this person. Sometimes I am still quite home-doned. In the past three years of the epidemic, I strictly abide by that order and have not touched the air on the side of the ship. I am used to it, especially when I was tired of work, I didn’t want to come out at the door of the room. I added 5,600 tons of fuel oil the next day, and I waited for 14 hours. In order to restore my mental strength, I was sleeping all day. When I woke up, I had already heard the sound of sailing on the radio. At this time, I was very happy and my pace of returning to China for vacation was getting closer and closer... The atmosphere in the control room of
Standby is always so laughable, and the nagging between the driver's bridge of the Intercom Channel 8 channel and the first mate of the bow and the second mate of the stern is always endless. When everything is quiet, when the engine crew is in a trap, the control room of phone rings, 03:00 Full Away, the host runs 82 rotations......
54...58...60..., while the host load is added, Autocheif C20 controls the computer display screen Load in program..., obviously feels that the control room is so large that the space is a little trembling. Suddenly, the ICMS monitoring computer "ME ECS POWER SUPPLY-A INSULATION LOW" alarm:
ICMS monitoring alarm
followed by MOP ALARM: The first person who called the alarm is EICU-B:too low ECS insulation level and CCU-8: electric noise detected....., In the next 4 hours, the CCU electric noise alarm in all the tanks was like a rooster crowing in the farm chicken coop of Mrs. Wang next door to Chendong. After a dog barking, the whole village chicken coop became turbulent. It was impossible to wake up naturally in the morning. Of course this is a later story. The entire second half of the night, the large-scale rounds could only be taken down and the outgoing alarms were just "handled".
MOP electrical noise alarm
At this time, you can see that the CCU-8 electrical noise has increased significantly to 80, and it still increases rapidly at a speed of about 3 frequencies/second. There is no change in other cylinders, and the EICU-B insulation is 0.
Check the ECS-A control box DC24V insulation monitoring box. The insulation value of the BENDER ISOMETER LCD display has been less than 1,000 ohm. It seems that some lines may have been almost completely grounded.
ECS-A DC power supply 24V box
Every time I encounter this kind of fault, it always makes me very annoyed. Accompanied by Nomal~Alarm~Normal~Alarm..., it appears like a ghostly prajna, which really makes my heart difficult to calm down.
"Good things come in pairs" Tacho B followed by failure
blocking..., it was not coming early or late in the middle of the night, his uncle's..., I muttered impatiently, and almost the words were not finished yet, the host ICMS monitoring jumped out of ME EICU-B SYSTEM FAIL, followed by a bunch of MOP alarms...
MOP crankshaft angle encoder position error alarm
"TACHO ALIGNMENT ERR" ALARM, which almost swept the screen, flashed back and forth, and the things that I was muttering to worry about still happened. It was estimated that the TACHO-B elastic bracket was broken again. After the large tube was arranged to remove the TACHO protective cover, it turned out that the same TACHO was still in the same position, and the same problem occurred again 4 months ago.
Because one side of the TACHO-B elastic bracket is basically broken, TACHO-B is slightly displaced, causing the stator angle deviation to exceed -1℃~1℃, so the fault alarm position error follows. Since I was sailing within 200 nautical miles of the United States at this time, and there was an impact of hurricane nearby, I communicated with the captain and asked not to stop the car for maintenance to see if I could insist on repairing before transportation, so I could only consider temporarily using ties and to fix it. Although this small wire ties really have shock absorption, the TACHO-B returned to normal after fixing.
TACHO-B elastic bracket failure
It is said that the latest Mann host TACHO angle encoder has cancelled this long tail design, and the angle detection sensor is installed completely on the power flywheel end. It is not only reliable but also has a very low failure rate. Friends who have done this kind of machine may wish to leave a message in the comment area to discuss it, and I will also learn it well.
Navigation low insulation check
After one night of car preparation and alarm trouble, I was a little more energetic the next afternoon to check and think about the low insulation problem. Opening the MOP interface really scared me. The CCU-8 electric noise increased from more than 80 frequencies to 186017 frequencies, and the others just increased from 10 to 30 frequencies around 1000 frequencies. The EICU-B insulation value still fluctuates between 0 and 3 thousand ohms. According to my work experience, the 80% possibility of the problem is in the CCU-8. For other cylinders, the increase in CCU is just a signal interference from the CCU-8, so there is no need to worry too much!
MOP electric noise monitoring
Re-read the Mann host check low insulation service announcement and maintenance experience. For the comparison of CCU electrical noise of each cylinder, if the electric noise of a certain cylinder is abnormally prominent, the low insulation problem is basically a high possibility of occurring in the CCU. The low insulation problem of the electric noise increase of CCUs in each cylinder is very synchronously likely to occur in the PMI-DAE control box, SCU, ACU, etc. The low insulation problem of the electric noise increase of CCUs in each cylinder is very likely to occur in the PMI-DAE control box, SCU, and ACU Above, given that the fault is basically on the CCU-8, the low insulation problem of PMI lines of each cylinder cannot be completely ignored. Since I also tried to test the insulation conditions of several cylinders with relatively high possibility of testing. Of course, as long as the host is not in the Auto-turning state, the power and signal lines of each cylinder can be safely removed and tested in the PMI-DAE control box. Pay special attention to waiting for about 10 minutes before confirming to confirm whether the insulation is back to normal.
Host PMI pluggable and low insulation test
Finally, confirm that the PMI lines of each cylinder are normal, and the PMI lines problem can be eliminated. To be honest, the cases with the most low insulation failures in the entire fleet all appear on PMI, but I rarely have the chance to encounter them.
Next, first check the condition of the HCU J/B junction box and MTBEV-8 junction box on the cylinder head layer. Since the internal lines are basically insulated sleeves, the internal lines are intact. Then check the output and feedback cable lines of the CCU-8 control box. I have re-fixed the cable wire that vibrated loosely in the early stage. The rubber hose and plugged rubber shock absorption are placed between the cable and the bracket. It is obvious that the wire wire is not loose, and there will be basically no vibration wear.
CCU-8 cable check
After a series of inspections, all possibilities are concentrated on the signal control line plug next to the NO8 cylinder cylinder oil injection. Since the host is running, although the CCU8 control box MPC-10 circuit board signal plug can be pulled out for a short time after slowing down to measure voltage detection to confirm the insulated line, even if some lines are found to have problems, they cannot be solved during navigation. Therefore, it is not really impossible to judge that I do not recommend plugging out and plugging each signal line during navigation.
cylinder oil-filled wiring plug
waiting... I hope to continue to investigate and deal with this after anchoring and parking.
briefly anchored across the river, and repair TACHO-B "dry"
"electric noise" and low insulation problems of ECS. The problem cannot be solved in a short time and has no effect on the host in a short time. Bad luck may burn the CCU-10 fuse, but overall, it will basically not affect the safety of navigation. However, the TACHO-B stent breaks and the "TACHO ALIGNMENT ERR" alarm. The alarm is described as the installation position of TACHO-A or TACHO-B, which makes the encoder signal different from the reference signal at the flywheel end. Although the short time does not have a big impact on the working conditions of the host, if it is not processed earlier, it will inevitably be TACHO-B. FAILURE temporarily withdraws from hot standby state . It only relies on TACHO-A to support important controls and references such as main engine startup, cylinder oil filling, and combustion conditions, etc., and can still cope with ocean navigation. The risks are in controllable, but you can't have such a heart when crossing the Panama Canal. Thinking of which big guy was renting a boat across the Suez Canal not long ago, and thinking about the new Panama River, which is not much wider than the small trench in the fields, a kind of indescribable worry arises!
Panama New River
greeted Capitan in advance, explaining some problems with the host, add 2 extra rotations to the host speed, and strive to arrive at the canal estuary 2-3 hours in advance and break down. Only then can I quickly replace the host TACHO-B elastic bracket and system debugging. Since I have relevant hands-on experience in replacing the elastic bracket, if it is fast, it should be fine for about an hour.
21:00 arrived at the canal estuary, and the captain only gave 2 hours of maintenance time, saying that anchoring would be raised at any time, which invisibly added a lot of pressure to me. In order to improve work efficiency, I made a short work arrangement and communication with the main pipe before stopping. At 22:30, the rear engine department of the anchoring rear turbine department slowly spread out...
After the TACHO-B was removed from the large pipe wheel, the elastic bracket on one side had been broken, and the fault at the same position still occurred again after more than 4 months.
TACHO-B bracket is damaged
It has to be said that this fault is the most popular fault of the Mann Electronic Injection Host. Because the TACHO drive shaft is relatively long, the host runs at high speed or other reasons, the eccentric fluctuation of the TACHO drive shaft is still relatively large, especially the end of the drive shaft , so TACHO-A vibrates small on the inside and rarely causes similar faults, and THCHO-B always seems so weak on the outside.
is a very interesting thing. The manufacturer of mann not only sells TACHO elastic brackets. If you want to buy a TACHO assembly, you must buy a TACHO assembly. If you don’t sell a cow hair, you just ask me to buy a cow. How can this make sense? Besides, the price of this TACHO assembly is not a problem of just buying a basket of brackets. So Germans sometimes are stubborn, and maybe they don’t look down on that little money. Chinese people are not so stupid. They want to make as much as they want to start the machine tool. So the company generously customizes dozens of reinforced elastic brackets for you at one time, and play hard!
elastic bracket spare parts
Replace the TACHO-B elastic bracket with a block, which takes more time to adjust the TACHO-B stator angle. The key point of is to drive the NO1 cylinder to the exact position of the TDC before disassembly. This is often important. Due to the flywheel scale and visual error, it always feels that the visual is not so accurate. Due to the tight time, there is no time to open the NO1 cylinder crankcase and use the dial table to detect the TDC.
NO1 upper dead center
Check that there is no problem with TACHO-A, then turn the car at 45℃ flywheel angle, debug and fix TACHO-B, and then turn the car for one week to check whether the TACHO-AB indicator light is normal.
crankshaft angle and TACHO indicator light
Finally, functional test is performed. If the debugging is inaccurate, the functional test cannot be overcome. When it is not perfect, it may be more rush to debug. The TACHO-B error angle is a bit high at 0.61 (the alarm value is in the -1~1 range)
TACHO Functional test
troubleshooting low insulation faults "Guess"
After solving the problem of TACHO, I was ready to use scientific detection methods to accurately judge and eliminate which part of the CCU-8 line has grounding electric noise and low insulation problems. It is almost impossible at this time. During the early reduction process, I found that the MOP insulation detection value is looming and restored to the normal range of 2265 from time to time.
MOP Insulation Recovery Normal
After parking, the insulation value completely returns to normal. At this time, we can only "guess" to troubleshoot the CCU-8 low insulation fault. Since I had opened some junction boxes and pulled the relevant cables during the previous voyage to check the protection in the later stage, I did not find any problem of cable breakage, so I explained it a lot before stopping. Only the male and female plugs and junction boxes of the cylinder oiler were not convenient to open during navigation. The possibility of the problem here is relatively high (I have found that the low insulation problem has appeared here more than once) , so I opened this check first after parking.
checks that the wiring of the female plug is basically good. The signal cable set CCU-8 output feedback signal cables has a total of 8. One of the lines is slightly worn but not to the point of breaking. I still used insulating tape to process it.
plug check
check the male plug junction box and found a problem. I carefully found that one of the black wires was obviously worn and broken. At a very small area, you can see that the internal wire core has been exposed. Don’t underestimate this broken and worn. After the insulation treatment, the entire ECS system has been run normally and the low insulation and MOP electrical noise have returned to normal.
junction box plug line inspection
safely cross the canal, return to China for vacation
In order to ensure absolute safety, the host was reversing and trial operation, the problem of low insulation alarm of TACHO and ECS was finally initially solved, and the restless heart before crossing the canal finally calmed down. During the subsequent observation of the Ocean Highway voyage for many days, it still withstood the test of vibration.
The Eastern Airlines route of the United States is indeed not a very popular place. If you pass the Panama Canal, you must prepare a car and sail for more than 12 hours in a row. If you lay an anchor in the middle of the journey, you must do it for more than 20 hours. Sometimes, even if you are trapped and have no horses, how can you bear to fall asleep when you see the beautiful scenery outside? Miss the grass and trees that almost reach out to touch the spring scenery in the garden. Everything in the dream is illusory, but at this moment, the scenery always makes people linger.
canal lakes
The thunder sounds in the distance are always constant, and it seems to have nothing to do with the cloudy and clear weather. There are sometimes sunny white clouds hanging in the sky, and sometimes dark clouds are dotted with hazy drizzle. The melodious low chirping of birds spreading their wings increases the pleasant atmosphere. The breeze is mixed with the smell of grass rust and mist, which makes the nasal mucosa that is used to smelling the sea breeze suddenly trembles. The fresh air of negative oxygen ions is refreshing. The 10,000-ton small grocery ship is dragged to the old canal on the other side of the river, dragging the light gray smoke traces seem to be moving forward in the jungle grass. The sharp corners of Panama City are just exposed in the distance, and it looks so tall and mysterious against the backdrop of the canal and ships.
Glance of the Panama Canal
Lying in front of the porthole, guessing that people seem to be talking about something on the high-rise tourist platform of the canal management office. Perhaps some are discussing that they will go home soon to have a good sleep, some are discussing that there will be a party party tonight, or some are discussing that they will have a "horse killing chicken" health care, or... Maybe this is the various lifestyles under the lights of thousands of families, and foreigners are no exception, especially European and American foreigners who do enjoy life more than us Chinese.
Canal High House
unknowingly, I have been away from home for nearly 8 months without knowing it. The vacation has finally been on the agenda. The company's new regulations have uniformly shortened the contract period to 6 months. I think this is a good thing. After leaving the canal estuary, we have finally reached the Pacific Ocean. The 20-day ocean sailing has finally come to an end. After busy handing over the work at hand, we can really enter the countdown on the vacation. Excitement and ecstasy may be just that little bit for me, an old driver.
days high and clouds are light, autumn is clear and the air is cool. October is the season for the harvest of the busy farming season. It also ushered in the 73rd anniversary of the motherland. 360 people shine to present gifts to the motherland. Workers on construction sites, factories, wilderness, and deep seas are standing by their posts and sweating profusely... The autumn harvest and farming of the modernized fields are sweating profusely... The frontiers and coastal soldiers practice the ability to land and fight to consolidate national defense and reunify the motherland, bleeding and sweating, shaking flags and shouting... Scientific and technological personnel are always so unknown for technical breakthroughs...
The spirit is invisible and cannot be measured by money, but it can always be recorded in history, and it will shine for thousands of years to inspire people to move forward. The material is so mouth-watering but always looks so flashy.
wishes long live the great motherland and prosperity forever!
pictures are from the Internet
This article has been synchronized with the WeChat public account "Huang Laoluo Business Private Place", which is convenient for communication and learning in your spare time!
https://m.toutiao.com/is/6tnnCTC/ - Huang Laozhi shared, looking for low insulation failure of Mann electronic injection host ECS, it is indeed a must-have - Toutiao
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