Newer engines that use DEF have a blue cap on the DEF tank, and most I have ever seen are a plastic tank, not saying for sure that all are though. The new Ford and Chevy diesel pickups are very quiet as well. To help with the emissions, modern diesel engines use a common rail where the fuel pressure last I knew was upwards of 35,000 PSI. Older diesel engines that have an injection pump with a line to each injector separately, give the engine 1 shot of fuel, resulting a a large explosion in the cylinder, causing the classic diesel knock. Now the new engines have all of the high pressure supplied to all of them at the same time through the aforementioned high pressure rail. The computer of the vehicle tells the injector when to open, injecting the fuel into the cylinder. And, last I knew, the tier 4 emission engines were injecting fuel up to 8-10 times per cycle of the engine. Ramping up the amount of delivery as it got closer to TDC, and then ramping back down after that, resulting in many tiny "explosions" in the cylinder, taking the knock out of it and burning the fuel more thoroughly with less "byproduct", or emissions. LOL, there's just a bit of the story , whether you wondered or not
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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