Russian Warships Pass Through English Channel – Looks Like They Have a Blown Motor – IOTW Report

Russian Warships Pass Through English Channel – Looks Like They Have a Blown Motor

screen-shot-2016-10-22-at-9-32-01-pmRussia parades through English Channel.

What’s with the chugging along like The Orca?

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Al Gore must be appalled.

This is a good time to post Smoke on the Water

This shop of Putin shoveling coal is hilarious.

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ht/ Big Owe

24 Comments on Russian Warships Pass Through English Channel – Looks Like They Have a Blown Motor

  1. Spooky Russian military, lol. Just like the powerhouse Chinese (who couldn’t even mobilize effectively to help out during that massive earthquake.)

    Overrated threats driven by propaganda serving the out of control Mil-Industrial Complex.

    “We must never let the weight of this combination endanger our liberties or democratic processes. We should take nothing for granted. Only an alert and knowledgeable citizenry can compel the proper meshing of the huge industrial and military machinery of defense with our peaceful methods and goals, so that security and liberty may prosper together”

    –Dwight Eisenhower

  2. In a former career I used to do calibration and controls work for some advanced EPA, DOE and CARB emissions research projects involving turbo diesel. I believe I can speak with some authority on this 😉 Some may find it interesting; apologies to those who do not.

    In general, a diesel begins to smoke visibly at about 18-20:1 a/f ratio. But best power a/f ratio for diesel is similar to gasoline engines, around 12-13:1. So to get max power they generally will smoke.. alot in fact, as you push the a/f ratio closer to best power ratio. As we have all seen with tractor pull engines, etc.

    The reason a diesel smokes in general is, it is not a homogeneous charge engine. It is a stratified charge, which means that the a/f ratio varies widely throughout the combustion chamber on each cycle. In fact some areas inside are near infinite a/f ratio (the outer periphery where no fuel reaches); yet near the injector nozzle the a/f ratio can be near zero (blobs of liquid fuel).

    So, just like with gasoline engine that is rich, you get black smoke/soot emitted basically due to the areas that are richer than ~ 18:1, per above. Hot hydrocarbons passing through to the exhaust basically.

  3. Turbo, I used to do fuel settings on CAT and Cumins engines (the 855 cubic inch) and quite a bit of work on gasoline engines. I always tuned for 14.7:1 ratio when I had my carburetor shop. And I know that’s the numbers GM computers adjusted to with the fuel injection systems in the 1980s and 90s.

    In diesel school they taught that 14.5:1 was ideal for diesel engines; 13:1 would be considered rich, and 15:1 lean.

    I think you would get more black smoke at the lower ratio numbers.
    It’s getting late so I hope this makes sense. 🙂

  4. That third ship in the video is HMS Dauntless, probably trailing the Russians from a discrete distance and recording every electronic emission they’re making.

  5. Unruly, you’re basically saying that diesel stoich is similar to gasoline. Yes. But unlike gasoline engines, diesels generally do not target stoich a/f ratio.

    But diesel almost always runs lean of stocih. WAY lean of stoich. Diesels always run wide open throttle (in fact there is no throttle). Wide open, even at idle. So, the only way to control power is by controlling the fuel. This is also one reason they have some higher efficiency- no pumping loss across a throttle.

    Which also implies that (unlike gasoline engines) they can combust over a VERY wide a/f ratio range. Indeed, like say 80:1 a/f ratio at idle for example.

  6. I made a small boo boo in the first post. Will try to clarify.

    When I say 18-20:1 that is the composite or overall a/f ratio per the whole stroke.

    Then I switched to inside the combustion chamber, and focusing on localized areas of different a/f ratio within.

    The smoke is not due to localized areas richer than 18:1; it is due to localized areas richer than can be adequately combusted.

    In a gasoline engine that is around 9:1 or so (overall), roughly. The smoke is due to a lack of air- if insufficient/no air at that local point, that fuel simply can’t combust. Out comes a hot, sooty, stinky hydrocarbon instead. Yuk.

    Another fascinating discussion is, how did diesels get so quiet lately.. Remember they used to be super clattery and loud (ugh). Now you can’t even hear a modern one next to on the highway at idle or part throttle. I was fortunate to have been part of that research/development too in the late 90’s. It’s an interesting tale.

  7. Turbo, I never considered the a/f ratios when I was doing fuel settings on diesel trucks, those diesel ratios I mentioned were given to me when I was certified. We used dial indicators and gauges to adjust the 3208 Cat engines, and changed the fuel buttons in the Cummins pumps. We “ran the rack” on the old Detroits; Fuel pump on them was a simple constant delivery pump driven off the supercharger. The newer Detroits are computer controlled and very impressive engines. But I never had to worry about air-fuel mixture ratios on diesels when I was mechanicing.

    But for gas engines, you want as close to 14.7:1 as you can get. That was my main point. “12-13:1” in an automotive gasoline engine would get you crappy fuel mileage.

  8. “Another fascinating discussion is, how did diesels get so quiet lately.”

    I laughed my ass off when Cadillac came out with their luxury diesel engine. lol. You could hear it coming a block away.
    🙂

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