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Overspeed alarm based on alternator frequency
Colin,
Don't sweat the overspeed. Unfortunately, this engine is too new for my catalogues, but I and quite sure that it is using a Hitachi copy of a Bosch TE injection pump. This pump includes a controlling governor that not only controls the engine to produce the ordered crankshaft speed but also limits the speed to a safe maximum. The only way to exceed that speed is by introducing additional fuel (often that is injested lube oil) and it that occurs there is often little the operator can do without getting too close to the engine. I was glad to see that you are running double belts because that is just about and maybe a little bit over the capability of a single belt. Matt Colie Lifelong Waterman, Licensed Mariner (Diesel Chief...) CS wrote: Engine is a Daewoo L136 and the original alternator, 50A 5000 rpm max continuous, was replaced by a Leece Neville unit, 110A 8000 rpm max cont . To get more amps from the alternator, I reduced the pulley so 8000 alt rpm is now achieved at just over 2300 engine rpm - engien normal max is 2200 rpm. The engine is beneath my feet in a luxemotor barge - so I think the oversped is somewhat superfluous. |
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