New Diesel Engine Enhancer

[Teacher]

Check out this new invention that is presently being tested. Looks like a great one for us! Check out the site: www.rnw.nl/science/html/031215wheel.html

 

[Torque King Jay]

Cool article. I've always thought that diesel electric propulsion was a unique approach to powering large objects (ships, mining trucks, locomotives etc... ) It's cool to see that they've put some more thought into it and reversed the construction around on the motor. New technology is great. Too bad it doesn't always get into public fast enough.



Thanks Teacher



Jay



Check out the links below Oo. Oo.



http://travel.howstuffworks.com/diesel-locomotive4.htm



http://transit.metrokc.gov/am/vehicles/hy-diesel.html

 

[Mike Ellis]

The inside-out electric motor has been around for a long time. It has been used successfully for fans and was used in some very large cooling tower fans (20 horsepower and up) back in the 50s. I seem to recall having seen it used in a "Motor in wheel" design sometime in the past as well.



Hope the Dutch are successful with the pilot program, it could be a nice design to alleviate pollution in the cities. Pity the poor SOB who has to change that tire though and God help the driver who has a blowout and ruins a motor driving on the hub

 

[nickleinonen]

how about turbo compounding assisting engine mechanically?

link to scania's website. check out this link. scania uses a holset turbine [iirc?] mounted in series after the turbocharger to drive a set of planetary gears which end up driving the engine rear geartrain adding some extra hp to the engine mechanically... .



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[Big_Daddy_T]

Why the hell isnt there electrically assisted turbos on the market yet. I dont want anything big. Just 2lbs of constant boost to keep the wheel spinning to eliminate lag.

 

[nickleinonen]

Originally posted by Big_Daddy_T

Why the hell isnt there electrically assisted turbos on the market yet. I dont want anything big. Just 2lbs of constant boost to keep the wheel spinning to eliminate lag.

price, and limit on the speed an electric motor can turn before the counter electromotive force limits it...



i have a sports compact magazine somewhere that has an electric supercharger in it that could work. no, it's not one of those bilge pumps but an actual roots type blower/supercharger with 3 starter motor type electric motors driving it. rated for 20 or 30 seconds max continueous use, says it makes like 7-8psi on a smaller 2. 5 liter'ish engine... if i can find that magazine i will post the link to their website



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http://www.boosthead.com/product.php?id=18



found the link. some of my memories were wrong. up to 3. 5 liter engine. 20psi boost, 15sec max...

 

[rbattelle]

Isn't diesel-electric the exact way modern locomotives work?

 

[nickleinonen]

Originally posted by rbattelle

Isn't diesel-electric the exact way modern locomotives work?

yep. diesel engine turns generator/alternator. power from there goes to the big electric traction motors [one on each axle on modern locomotives] most high HP freight loco's are 3000hp or better

 

[Big_Daddy_T]

3000 hp at 900 rpm. Thats like 18000 lb ft of torque. Idles just over 250rpm.

They showed a 3200 hp version v12. 8400 ci displacement. Each cylinder displaces twice as much air as a 5. 9(almost). They are two stroke. Two stroke diesels can last a long time unlike gassers. The biggest diesels are two stroke also.



The reason for a hybrid is it elimates the gear box. It would require whole lotta reduction to get 900rpm up to 110 mph(does 32 to 1 sound right)whereas electic just requires more juice.

 

[Big_Daddy_T]

http://auto.howstuffworks.com/diesel-two-stroke1.htm

Its pretty cool really. Needs to be supercharged to work but hey. WE could have 1000-1400hp 5. 9s. DI two stroke is prolly where gas is headed anyways. It really cleans up the emissions on these beasts. Skidoo appears to be the furthest along on this. Their interest in evinrude prolly netted them some great r and d that the other sno go manufacturers just dont have.

The problem appears to be with injector technology. No way to make the necessary pressures in time for 8000 rpms. So skidoo went with two injectors per cylinder. Its just gonna require some clever engineering is all. I cant wait for a supercharged DI 2stroke sled. Talk about fuel efficient. 30mpg sounds bout right. Im lucky to get 10 on my 700.