මගතොටදී මේ සිදුවීම දැක්කොත් ලගට යන්න එපා ! Diesel Engine Runaway !

A runaway diesel engine ( Ober run) is a phenomenon where a diesel engine begins to rev uncontrollably, surpassing its designed RPM limits. This usually happens when the engine starts consuming fuel from an unintended source, such as built-up engine oil or external hydrocarbons. Unlike petrol engines, diesel engines do not rely on spark ignition; they compile air to high pressures and temperatures, igniting the fuel injected into the combustion chamber. Therefore, when a diesel engine starts running on an unintended fuel source, regular controls like throttle or ignition shut-off become ineffective in stopping the engine.
Diesel engine overrun, also known as "diesel runaway," is a dangerous condition where a diesel engine continues to run uncontrollably and at increasing speeds, even when the ignition is turned off and the fuel supply is cut off. This situation can lead to severe engine damage or even catastrophic failure.
Causes of Diesel Engine Overrun
1. **External Fuel Sources**:
- **Oil Leaks**: Engine oil entering the combustion chamber due to turbocharger seals, valve seals, or piston rings failing. The oil acts as an uncontrolled fuel source.
- **Fuel Contaminants**: Substances such as hydraulic fluid or oil mist in the intake air can cause overrunning.
2. **Internal Issues**:
- **Blown Head Gasket**: Allows oil to enter the combustion chamber.
- **Faulty Injection System**: A malfunctioning fuel injection system that continues to deliver fuel uncontrollably.
3. **Environmental Factors**:
- **Fumes**: In environments with flammable fumes or vapors (e.g., certain industrial settings), these fumes can be ingested by the engine and cause overrunning.
Symptoms of Diesel Engine Overrun
- **Uncontrollable RPM Increase**: The engine speed increases rapidly and uncontrollably.
- **Excessive Smoke**: Thick, black or blue smoke from the exhaust, indicating burning oil.
- **Loss of Control**: Standard methods of stopping the engine, such as turning off the ignition, become ineffective.
Risks and Consequences
- **Severe Engine Damage**: Overrun can cause extreme stress on engine components, leading to failure of pistons, connecting rods, and crankshaft.
- **Explosion Risk**: High RPM can lead to engine components breaking apart explosively.
- **Safety Hazard**: The runaway engine can create hazardous conditions, particularly if the vehicle is in motion.
Prevention and Response
**Prevention**:
- **Regular Maintenance**: Regular checks and maintenance of seals, gaskets, turbochargers, and the fuel system.
- **Monitoring**: Using sensors and monitoring systems to detect early signs of oil leaks or fuel system
While not exceedingly common, the issue of runaway diesel engines poses a significant risk due to the potential for engine damage, safety hazards, and operational downtime. In severe cases, a runaway engine can lead to catastrophic engine failure, posing safety risks to operators and bystanders. It is particularly prevalent in older engines or those not adequately maintained. The severity of the situation necessitates a clear understanding of the causes, signs, and preventive measures, which is vital for operators and mechanics working with diesel engines. This guide provides a comprehensive overview of runaway diesel engines, their causes, and practical solutions to mitigate their associated risks.
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බුදු සරණයි 🙏

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ජයවේවා 🙏🙏

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වටින විඩියෝ එකක්❤️❤️

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[@chamindasampath90]

Great thanks for the explanation MRJ❤🤙I like mostly to the diesel engines. මේ ගැන ඇත්තටම දැන ගන්න ඕන වෙලා තිබුණේ..

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Are there any prior signs which we can detect before this happens? Do we need to keep a turbo intercooler diesel idling for about 05 minutes before shutting down after a long trip? Thanks.

[@iroshansuranji1144]

අතුරුගිරිය හයිවේ එක ළඟ පාලම උඩදි දැනට අවුරුදු 6 කට විතර කලින් මට ඔය දේ සිද්ධ උනා,, ස්වීච් ඕෆ් කළා,, බැට්‍රි ටර්මින්ල් ගැලෙව්ව මොනව කලත් හරි ගියේ නෑ අන්තිමට හැමදේම කරල නවතින්නැති නිසා වාහනේට ආයිත් නැගල 4 වෙනි ගියර් එකට දාල ක්ලච් එක දුන්න,, ඒත් පිකප් වැඩි නිසා තවත් තත්පර 2 කින් විතර වාහනේ ඉස්සරහට පැනල වගෙ වෙලා නතර උනා,, නැත්නම් ඒ දවස්වල එන්ජිම හදන්න ලක්ෂ 4 ක් විතර තව පොඩ්ඩෙන් ඉවරයි.

[@MRJInspire]

ඒක තමා ඔයින් ගියා ඇති

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congratulations for 300K

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වටින video එකක් අයියේ 💥👍

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Congratulations for 300k

[@Senuka_Govinda]

බොහොම ස්තුතියි දැනුවත් කිරීමට ❤

[@sumithpubudu8073]

Engine 1 over lord කරලා නවත්තන්න බැරිද

[@user-wu8io8bt7y]

Congratulations අයියේ

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Good luck අයියේ .මම බලන්න පටන් ගද්දි මම හිතන්නෙ subscribers 5000ක් වත් නෑ .සන්තෝසයි දියුනුවට ❤️❤️❤️

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Congratulations MRJ
to 300k ❤

[@thiwankahasaranga2003]

Congratulations Brother 💖

[@udayakumar5420]

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Nice explanation..😊

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❤

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300k congratulations

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ස්තුතියි..

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❤ නියමයි ඔක්කෝම කියනවා වැදගත් අයට වටිනවා❤

[@RadoFlakka]

Congratulations Brother.!

[@ThiranjayaSamudika-ki9yn]

300k congratulations ❤ ගොඩක් දේවල් මම අයියගෙන් ඉගෙන ගත්තා

[@Thesachenshow]

Congratulations ❤
Box Prado review ekak ona 😊

[@user-hc8qx4to6q]

Super advice aiya.

[@ChamodWeedagama]

Congratulations ayya ❤

[@thuppahigedonsujeewapushpa2090]

ජයවේවා සහෝදරයා !❤❤❤❤❤❤❤❤❤❤❤❤

[@RanjithDharmadasa-ep1bz]

ජය වේවා..තෙරුවන් සරනයි ..❤

[@asangaperera]

Great work🙏

[@hiranthaliyanage8482]

Congratulations brother 🎉👏

[@MalinduJayakodi]

මාර වටින උපදෙස් ටිකක්

[@arunaprasad3030]

Congratulations brother👍

[@wdgodfrey8895]

Thank you very much SIR

[@waraSuraweera]

ජය වේවා ...!!!! ඔහොම යමු ඔහොම යමු,..!!!😍😍😍😍

[@bawanthathennakoon3662]

වීඩියෝ එකක් ඕනි,
වාහනයක interior, chassis, paints, engine condition හොඳටම තියාගන්න කාලාන්තරයක් පවත්වාගන්න නම්; නම්, regularly කළයුතු දේවල් සහ නොකළයුතු දේවල් ගැන.

[@JakeFellman44]

ගොඩක් වැදගත් වෙනවා❤

[@heravlog9025]

You are the best 🎉

[@heavennoorysas3164]

Micro kyron jeep gena KIYANNA sir!!!! kyron Ekak ganna adahasak thiyanawa...Ganna hondaida?