I'm working on the same idea--still on the drawing board--for an International truck six. Using the idea of 3 injectors, one in each intake runner...since the head is where the ports actually "split" for each cylinder. You simply have to make each injector fire EVERY crank revolution, instead of every OTHER crank revolution. On a low-rpm engine like a tractor or some of these old trucks, firing each injector twice as often still shouldn't be too bad on them.
Remember, it takes TWO crankshaft revolutions to make a combustion "cycle" on a 4-cycle engine...so on your 4-cylinder example, you'd be firing one injector every 180 degrees, since it would take 720 degrees--two crankshaft revolutions--to fire all 4 cylinders. At 90 degrees of crankshaft rotation, there should be NO spark OR injector events going on...think about it.
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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