• ColeSloth@discuss.tchncs.de
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    9 months ago

    GDI engines that need to run the fuel to the injectors at over 2,000 psi is just stupid. Using that much pressure for such a marginal gain in efficiency from other engines that only need like 50 psi.

    2,000 psi is like a guarantee that at some point in that vehicles life there’s going to be fuel leaks and problems. Ever see a firetruck shooting that giant stream of water from the end of its ladder? That’s only 80 psi.

    • riodoro1@lemmy.world
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      9 months ago

      Direct injected cars are nothing new. Diesels run their injectors much higher than 2000psi for hundreds of thousands kilometers. Ford is just shit at engineering.

      • ColeSloth@discuss.tchncs.de
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        9 months ago

        Don’t try and bring diesel into this. They’re pretty different. It also doesn’t cause nearly the fire risk when they leak some fuel.

        Also, they absolutely leak fuel. I’ve seen loads of diesels with fuel leaks (I drive a lot of diesels for work). But like I said, them leaking a bit isn’t really a cause to sound the alarm bells for a fire, cause diesel fuel isn’t a risk like that.

        • Gingernate@programming.dev
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          9 months ago

          High pressure side leaks? If a common rail diesel has a high pressure leak the engine will most likely shut down due to pressure loss.

            • Gingernate@programming.dev
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              9 months ago

              Right, and on newer emissions systems the engines use the high pressure to help with more complete combustion allowing for lower soot, meaning less DPF issues. While this does cause higher NOx , we are able to clean it up with SCR and flowing more DEF. Ford is being lazy on this, but the issue is not high pressure. I also understand the differences between gasoline and diesel, and again, Ford could develope a system that does not fail, and then dumps gasoline on the ground hahaha. I’m saying this as a master diesel engine tech with 12 years of experience. I’m not rooting my own horn, but just letting people know I do have industry experience.

          • TheRealKuni@lemmy.world
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            9 months ago

            Gas is a type of fuel…

            And squares are a type of rectangle, but rectangles aren’t all squares.

            Diesel fuel isn’t gasoline. They have different properties and Diesel isn’t nearly as flammable.

            • this_1_is_mine@lemmy.world
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              9 months ago

              Just because it’s not nearly as flammable doesn’t mean that it doesn’t have the exam inherent risks especially when you end up having it come out under high pressure it’s going to try an atomize into a fine spray it most certainly can be a fire risk.

              • Gingernate@programming.dev
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                9 months ago

                Yes. There are huge risks. I have seen several diesel powered class 8 trucks burn and catch fire due to fuel leaks. It’s not very common at all, but it does happen. Ford is not fixing the issue when they could. The fuel system probably needs to be re engineered, but high pressure is not the issue

          • ColeSloth@discuss.tchncs.de
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            9 months ago

            But diesel isn’t a type of gas, so you can be a bit ambiguous calling gas “fuel”, you can’t call diesel “gas”.