Saturday, March 13, 2010

Insane

Hey, How's it going ?
It's saturday night ! and there you set in front of the computer, reading blogs.
Whatzdamatter? girlfriend not logged on yet?

Oh yeah,,I made the player over there be quiet, so it wouldn't weird ya out when ya came by.
But you got to listen to "Sic'em on a chicken" ,,,,go ahead, click play.

This is night #4 of a 5 day run for me. It's been a good week here. The Princess has
gotten a job, that she really seems to enjoy.It's great seeing her pretty smile again.

My Mom, had stents put in her kidney tubes yesterday. The found a bunch of kidney stones. 
No wonder her back hurt.

My Sister isn't insane,(soooo she says !)lol
She had her hearing checked last week and come to find out,,,,she hears toooo good.
I'm not too suprised. I think it's just one of her super powers.

I don't have the guts to tell her I am insane. I've become very careful what I say and try to control what I think. And still weird myself out a lot of the time.
I'm not sure if I can see into the future or what I say or think just happens.*Shrugs*
Yeah,,,,it's weird.

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    The  Wartsila-Sulzer RTA96-C turbocharged two-stroke diesel engine  is the
    most powerful and most efficient prime-mover engine in the world  today .
The Aioi Works of Japan ’s Diesel United, Ltd built the first engines .    
This is where many of these pictures were taken .

    It is available in 6 through 14 cylinder versions, all are inline engines . These engines
    were designed primarily for very large container ships .  Ship owners prefer a single
    engine/single propeller design and the new generation of larger container ships 
    needed a bigger engine to propel them .

        The cylinder bore is just under 38" and the stroke is just over 98" .  Each cylinder 
    displaces 111,143 cubic inches (1820 liters) and produces 7780 horsepower .  Total
    displacement comes out to 1,556,002  cubic inches (25,480 liters) for the fourteen
    cylinder version .  

    Some facts on the 14 cylinder version:
    Total engine weight: 2300 tons (The crankshaft alone weighs 300 tons . )
    Length: 89 feet
    Height: 44 feet

    Maximum power: 108,920 hp at 102 rpm
    Maximum torque: 5,608,312 lb/ft at 102rpm 

    Fuel consumption at maximum power is 0 . 278 lbs per hp per hour (Brake
    Specific Fuel Consumption) .  Fuel consumption at maximum economy is 0 . 260
    lbs/hp/hour . At maximum economy the engine exceeds 50% thermal efficiency . 

    That means that more than 50% of the energy in the fuel in converted to motion .

    For comparison, most automotive and small aircraft engines have BSFC figures
    in the 0 . 40-0 . 60 lbs/hp/hr range and  25-30% thermal efficiency range .

    Even at its most efficient power setting, the big 14 consumes 1,660 gallons
    of heavy fuel oil per hour .

    Try to imagine constructing the molds and castings for pieces of iron this big .
 Then imagine having to perform precision machining operations on those same  casting .

    The following is a cross section of the RTA96C:


    The internals of this engine are a bit different than a normal automotive or other type of diesel engine .
The top of the connecting rod is not attached directly to the piston .   The top of the connecting rod attaches to a "crosshead" which rides in  guide channels .

    A long piston rod then connects the crosshead to the piston . I assume this is done so the sideways forces produced by the connecting rod are absorbed by the crosshead and  not by the piston . . Those sideways
    forces are what make the cylinders in an auto engine get oval-shaped over time . 

    Installing the "thin-shell" bearings .  Crank and rod journals are 38" in diameter and 16" wide:


    
    The crank is sitting in the block (also known as a "gondola-style" bedplate) .
    This is a 10 cylinder version . Note the steps by each crank throw  that lead down into  the crankcase:

    A piston & piston rod assembly .  The piston is at the top . The large
    square plate at the bottom is where the  whole assembly attaches to the crosshead:

    Some pistons

    Some piston rods:

    The “spikes" on the piston rods are hollow tubes that go into the holes
 you can see on the bottom of the pistons (previous picture) and are used to inject oil into the inside of the piston which keeps the top  of the piston from overheating . Some high-performance auto engines have a similar feature where an oil squirter nozzle squirts oil onto the bottom of the piston . 

 
    The cylinder deck (10 cylinder version) .  Cylinder liners are die-cast ductile
    cast iron . Look at the size of those head studs .



    The first completed 12 cylinder engine:

    

    If you could stuff this into a dragster it would do the quarter mile in under 1 second and turn 2 revolutions . At 2300 tons traction shouldn't be a problem . Break the sound barrier . One giant leap . . . . Just kidding . Or maybe not . . . .

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