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Re: Anyone ever added a turbo to a tractor?
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Posted by Jerry/MT on March 06, 2004 at 16:21:49 from (206.231.182.238):
In Reply to: Anyone ever added a turbo to a tractor? posted by Hound on March 05, 2004 at 18:24:55:
Hound, I don't know whether you are talking about adding a turbo to a gas or a diesel engine, but in either case it is not just a bolt it on and off you go proposition. In either case, the loads on the engine increase substantially. In the case of a spark ignition (gas) engine,the overall pressure ratio and the compressed gas temperature are limited by the fuel due to detonation. (As one of the other writers said, reduce compression ratio pistons are required.)Some time water/alchohol injection after the compressor is used to evaporatively cool the charge and prevent detonation. Also the gasoline engine will only burn in a rather narrow range of fuel air ratio, so precise fuel/air ratio control is required. In the case of the diesel, the range of allowable fuel air ratios is much greater and is generally limited by peak temperature on the piston crown. The cooling requirements of the engine are greatly increased over a naturally aspirated diesel. In general oil is sprayed under the piston crown to cool it and the entire cooling system is upsized to maintain the proper material temperatures of the components.
I won't even address the power transmission requirements that need to be addressed due to increased power and torque. This is all a long winded explanation on why you shouldn't simply "add a turbo" to a normally aspirated engine. Oh you can, but don't expect it to last long.
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