Posted by David G on August 14, 2013 at 19:35:00 from (205.215.206.18):
I spent most of the week working on adding fuel injection to the big natural gas engine, I was incorrect, this unit was 10,000 HP, the unit next to it was 7000 HP.
I saw the effects of retarded timing on heat generation. We needed to get the turbo hot enough to work, so we retarded the timing a few degrees after starting to generate heat to do that.
They added a pressure transmitter in each head that showed the pressure pulse created during ignition. We got to see the effects of that pulse by varying timing and boost.
This engine adds fuel in response to the governor, much like a diesel, then we had to control the turbo to make the air to fuel ratio correct. I always wondered how they did that in a diesel.
It was a very educational week. The engine is running, and are working on determining the correct data to model with.
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Today's Featured Article - Tuning Up Your Tractor: The Battery - by Curtis Von Fange. Buried somewhere beneath the sheetmetal, under the gas tank, or stuffed in front of the radiator is the battery. This elusive and neglected component of the tractor is the hardest to get to when it is dead and in need of a jump. But usually, the storage battery is a storehouse of electrical energy waiting to be released a the flick of a switch. A few maintenance tips and periodic cleaning will keep it charged for the duration of its life span. The battery is made up of a number of lead bas
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