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Best engine in a tank of WWII


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colonelsandrs #21 Posted Oct 15 2011 - 19:12

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View Postdapprman, on Oct 25 2010 - 21:49, said:

As others have effectively pointed out, it's the application the engine is used for that decides the vehicle type if you have a full range of options.  If the vehicle is going to slow moving, or pulling away from an idle stand still then diesel will win virtually every time.  If it's for high speed,  and high acceleration through the gears, then you want petrol.

For example, from an idle revving stand still (so no build up revs and drop the clutch) I know my 115 bhp fiat multipla turbo diesel will hit ~ 20 mph (32 kmh) more quickly than my ~330 bhp mildly modified RX7 twin turbo.  And yes this does mean it's quicker and more nimble around town.  Hit the race track or country roads and obviously the end result is completely different.


colonelsandrs #22 Posted Oct 15 2011 - 19:20

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Everyone is talking about horsepower right now. In large vehicles, trucks, tanks, even ships, horsepower is of much less concern than torque. also, if an engine has lots of one but little of the other, that can be balanced using gearing.
Ex.: my F-350 with the 6.0l diesel makes about 300 hp and 550 ft/lbs of torque, but it is no tank engine. It is the GEARING that makes the difference, not what the engine would produce straight up, e.g. without gearbox, final drive etc. net HP and torque are far better measures.
with this in mind, my vote (somewhat regrettably) goes to the Chrysler A57. I would have said Caterpillar D200A but it was not a choice.
D200a is a diesel and diesels do produce more torque with less fuel.

Ducesettutamen #23 Posted Nov 07 2011 - 01:52

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As a former GM supervisor from a Powertrain plant I would have to throw my weight behind the GM 6046. Simply when it comes to the application of torque there is nothing out there like a straight 6 or straight 8. The fact that the 6046 was nothing more than a pair of Detroit 71s (the longest manufactured and most respected diesel engine in the world) makes it all the better. Maintenance on the engine was simple because it was well understood and a staple design of the American automotive industry. It was easily manufactured from existing lines requiring no retooling like the other engines. Beyond that the fact that critical damage to one half of the engine could be isolated and the tank still operated on the other. Maybe its not enough to keep you in combat, but being able to limp out of the line doesn't hurt your feelings any.

Teddy_Bear #24 Posted Nov 22 2011 - 22:05

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View Posttheta0123, on Oct 26 2010 - 22:32, said:

Yes a very good engine. But diesel engines>gasoline engines  :Smile_honoring:

Both where very good engines. And their designs where used post war alot.

I beg to differ, gasoline> Diesel. There is a reason why everyone except the Soviets used gasoline engines. The only real advantage of a diesel engine is the fuels's resistance to cold, which is why Russian tanks used it. Gasoline engines had been far better for the engine itself, provided a superior amount of energy for what was burned, was cheaper, cleaner, far quieter, did not give off excessive fumes (which gave away a tank's position) and many other advantages. Diesel engines of today are a different breed all together than the engines of yesterday.

Lunaris #25 Posted Nov 22 2011 - 22:27

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The German cant use Diesel because they cant produce them.

Late version of Sherman also use diesel engine. One of the Patton tank also use diesel.




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