Is your generator embarrassing you by smoking up the neighbourhood? Reading this writeup could be the solution you need
Basically, smoke from a diesel engine indicates that something is not right , this will potentially shorten the engine life, or result in unnecessary costs.
A diesel engine in good condition should produce no visible smoke from the exhaust, under most operating conditions. A short puff of smoke when an engine is accelerated under load may be acceptable.
There are three basic types of smoke, as identifiable by their colour.
1. Black smoke is the most common smoke emitted from diesel engines. It indicates poor and incomplete combustion of the diesel fuel. There are many causes, including
- Incorrect timing
- Dirty or worn injectors
- Injectors sticking open too long
- Over-fuelling (yes this is possible)
- Faulty turbocharger (ie not enough air to match the fuel)
- Incorrect valve clearance
- Incorrect air/fuel ratio
- Low cylinder compression
- Dirty air cleaner
- Carboned up intake manifolds
- Other engine tune factors
- Poor quality fuel
- Excessive carbon build up in combustion and exhaust spaces
- Cool operating temperatures
2. Blue smoke is an indication of oil being burnt. The oil can enter the combustion chamber for several reasons.
- Worn valve guides or seals
- Wear in power assemblies (cylinders, piston rings, ring grooves)
- Cylinder glaze
- Piston ring sticking
- Incorrect grade of oil (eg oil too thin, and migrating past the rings)
- Fuel dilution in the oil (oil thinned out with diesel)
3.White smoke occurs when raw diesel comes through the exhaust completely intact and unburned. Some causes of this include
- Faulty or damaged injectors
- Incorrect injection timing (could be a worn timing gear or damaged crankshaft keyway).
- Low cylinder compression (eg caused by leaking or broken valves, piston ring sticking, cylinder and/or ring wear, or cylinder glaze)
- Water entering combustion spaces will also create white smoke
If you need solution to your diesel generator smokes send me a mail please.
If you found this write up informative kindly give me your feedback.
in my firm, there is 273kva cummins plant.it was discovered this plant started bringing out wight smoke out of the exhaust. we have changed the turbo charger and the air filter yet, the smoke still persist. what is the remedy to this unusual wight smoke?
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ReplyDeleteA properly maintained generator is less likely to exude so much smoke. You can ready here about how to properly maintain the generator using load bank testing:
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My new 30kva generator bringing out smoke what can I do to prevent it?
ReplyDeleteMy 75kva denyo generator is emitting oil in firm of air from oil cover despite firmly tightened. What might be the cause
ReplyDeleteI have a 100kva Perkins generator , it use to consume much oil by spilling it out through d turbo charger and also from d exuslt pipe and also release a bit of white smoke , called d engineering d changed my piston n rings also d chranshaft but still d oil is still spilling from does affected Area what might b d cause
ReplyDeleteChange your turbo charger. It's bad.
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ReplyDeleteMy generator release a black smoke and stopped slowly help me please
ReplyDeleteMy generator release a black smoke and stopped slowly. Help me please
ReplyDeleteMy lister peter gen got plenty of black smoke and no power
ReplyDeleteCan I know the cause of a continues smoke over an overhauling lister Petters please
ReplyDeleteI have 1500kVA generator and has two bank. When the generator is on no load the two exhaust bring smoke but when its loaded only one bring black smoke and the second did not has any smoke. What can cause this.
ReplyDeleteOur Cummings Diesel generator emits huge black smoke continuously during ideal & on load condition please let me know the solution
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