New QSB Series Cummins-Mercruiser Common Rail Diesels........

These are computer controlled common rail engines, and there are sensors at the crankshaft to monitor engine speed, sensors at the camshaft to monitor engine phase, a sensor that monitors the temperature of the air, one that keeps track of the temperature of the coolant, one that monitors turbo boost pressure, and one that measures the amount the throttle has been advanced. All of this data is directed to an electronic control unit that control the pressure in the fuel injector rail, and the system can make instant adjustments as the throttle setting or other variables change.

Observations: From stone cold, about 1/2 second from pressing the start button to running. No visible smoke. None at all. Faint whiff of diesel at startup, but otherwise no smell and the startup odor was a fraction of what one might otherwise expect. Cummins claims the engine is 80% quieter at idle than previous Cummins products, and while I didn't have a way to measure 80%, it does idle smoothly and quietly. At speed, the engines were quieter than one might typically expect, and still no smoke or diesel smell at any time. (People who prefer gas engines because they don't like the soot, smoke, and smell often associated with a diesel might do well to check these out next time they buy a boat).

The QSB engines are fully compliant with EPA and other emissions regulations.

There is also an 8.3L QSC engine (490-540 HP), and a QSL 9 litre (285-405 HP). The big brother of the family is the QSM 11-Litre engine, 300-670 HP.

73 DE W4CSC

On second thought.

Never mind. :>)

:-)

INT QBP Are you flying in and out of cloud? (Question)

QBP 5 I am flying in and out of cloud and at flight level/altitude 5000' (Answer)

Problem was, these were sailors talking to each other aboard ships at sea level.

The Navy in the 60's was a bit different than today. Basically a bunch of hippies with haircuts.

Eisboch

Eisboch

It stands for "Quiet Sum Bitch".

Interesting they would use the acronym QSB....

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-- Disclaimer: This is a boating post and applies to boaters. It is not intended to provoke, annoy, irritate, bother, aggravate, anger,incite, inflame, infuriate or create controversy resulting in unacceptable behavior on the part of other posters nor is it intended to generate political commentary or off-topic debate.

Eisboch

"Hello, Cummins? We're in a marina in (pick an exotic island) and it won't start! I don't think the computer is injecting any fuel. Who's your computer technician with that special computer terminal and years of training that can fix it here?"

Might be interesting to call 'em to see what their response to this call would be before buying it. Joe's Diesel and Tiki Bar, who fixes the diesels in the fishing boats tied up aft of you, can fix the old, mechanical Perkins/DD/Lister/Deutz/Yanmar with his tool box in the truck. I bet he'd shake his head and just say "NO WAY!" to a QSL. It won't run on coathanger wire and bubble gum like a 6-71 will.

It is something to think about on a boat you're going to cruise to very exotic and backwards, technologically speaking, places with, isn't it?

Amen.

I think it's a good thing.

Eisboch

It may be "better," but it increases cost of operation and makes diagnostics and repair a high tech endeavor. In Larry's scenario, you may not have a boat mechanic cum tuner in your pocket... in that case, you are screwed.

Throughout time, the best inventions have had the superior characteristic of simplicity. Marrying a diesel engine and a computer is, IMHO, not good..... it's just crazy. I'm not immune.. I'll certainly have to spring for the diagnostic computer if my Suzukis burp... but I still think it is just plain crazy..... a computer in search of a problem.... crazy.

Oh well... :>)

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Why have you stopped there? PLEASE leave out SC, GA and especially Louisiana from your places to stop, also!

God, wouldn't it be funny to strand Harry in a Gullah, Creole or Cajun community for a week?....(c;