Revisiting old diesel technology and applying new thinking

[jaggedfish]

Hey all!
Slightly off Delica topic but it does have to do with diesel engines. This info came across my desk the other day and am curious what everyone has to say or think about this. Much smaller motor, much greater horsepower and big torque. This is a 2-stroke diesel, opposing piston, opposing cylinder motor generating about 300 horsepower out of a 300 pound motor. BMW has taken some old technology and is redeveloping this. I think it sounds pretty cool. Here's the links that were sent to me by another car guy at my office...

http://www.youtube.com/watch?v=uP7gGUCP ... re=related
http://www.engineeringtv.com/video/Oppo ... d-Cylinder
http://www.thetruthaboutcars.com/2010/0 ... cy-engine/
http://en.wikipedia.org/wiki/Napier_Deltic

Anyone for a Delica engine swap?
Cheers!
Ian

[konadog]

When I started working at the city here in Campbell River they had an old bucket truck that was a 2-stroke diesel - Drove it a number of times. Pretty cool.

[RichD]

Very cool. I'd like to see a BMW style bike with this kind of engine.

[FalcoColumbarius]

I would think that this engine would be extremely fuel efficient, too ~ I think that is often a concern when going into the bush for longer periods of time (not to mention deep into the enemy's territory as this is what it's initially being designed for). Although I am curious as to why they are using electricity to aid the turbos.

Falco.

[Mr. Flibble]

I would think that this engine would be extremely fuel efficient, too ~ I think that is often a concern when going into the bush for longer periods of time (not to mention deep into the enemy's territory as this is what it's initially being designed for). Although I am curious as to why they are using electricity to aid the turbos.

Falco.

The electricity to the turbo allows for better gas scavenging from the cylinders. This helps to give the 2 stroke comparable levels of gas scavenging to a 4 stroke.

[mararmeisto]

I met a couple who lived in a bus and it was a 2-stroke diesel in the back. Bus was from the '60s or '70s and they said it was quite common for its time.

[DeliTan]

I met a couple who lived in a bus and it was a 2-stroke diesel in the back. Bus was from the '60s or '70s and they said it was quite common for its time.

I also have such a bus. It's a 1967 ex "greyhound" 35 feet long with a pusher 8V71 Detroit Diesel 2 stroke. Best guess is it has 2.2 million miles on it

The engine is good for 500,000 miles before needing a rebuild which puts it in new condition.

It seems to surprise people who know this engine that I only "loose" 7 gal of oil per Mexico trip and get 10 miles per imperial gal. Not bad for a 12.5 ton motorhome.

john

[DelicaDJ]

I met a couple who lived in a bus and it was a 2-stroke diesel in the back. Bus was from the '60s or '70s and they said it was quite common for its time.

I also have such a bus. It's a 1967 ex "greyhound" 35 feet long with a pusher 8V71 Detroit Diesel 2 stroke. Best guess is it has 2.2 million miles on it

The engine is good for 500,000 miles before needing a rebuild which puts it in new condition.

It seems to surprise people who know this engine that I only "loose" 7 gal of oil per Mexico trip and get 10 miles per imperial gal. Not bad for a 12.5 ton motorhome.

john

Nice bus there, DeliTan! Are you losing that oil into the engine, or onto the road?

[FalcoColumbarius]

I would think that this engine would be extremely fuel efficient, too ~ I think that is often a concern when going into the bush for longer periods of time (not to mention deep into the enemy's territory as this is what it's initially being designed for). Although I am curious as to why they are using electricity to aid the turbos.

Falco.

The electricity to the turbo allows for better gas scavenging from the cylinders. This helps to give the 2 stroke comparable levels of gas scavenging to a 4 stroke.

So you're saying that because it's a two cylinder it doesn't develop enough exhaust to spin the turbo and that's why the electrical aide is there?

[DeliTan]

[/quote]
Nice bus there, DeliTan! Are you losing that oil into the engine, or onto the road? [/quote]

Thanx.

Most of it gets eaten and is normal. However, the nicknames of that engine are "The Green Leaker" or Driptoid Diesel.

I chose the bus model because its mostly stainless and the engine due to its simplicity...

I would change the engine for an OPOC as soon as it, too, has 55 years reliability under its belt

http://en.wikipedia.org/wiki/Detroit_Diesel_Series_71

john

[jaggedfish]

Very cool. I'd like to see a BMW style bike with this kind of engine.

That was the first thing we said in the office here too - would make an intersting custom too
Funny that DeliTan actually owns a bus with a 2-stroke - nice one by-the-way! It will be interesting to see where BMW applies this in the long run... gone may be the days where the gasoline motor dominates the sports car world. A compact and lightweight 300hp motor would fit in a pretty small car... add veg to the equation and you would have a new eco-supercar...

[marsgal42]

My picks for most exciting sounding engines. None of them are new, but one of them is a two-stoke diesel.

Commer Knocker, two-stroke diesel: http://www.youtube.com/watch?v=6wol_U4mkjs

BRM V16, "The Screamer": http://www.youtube.com/watch?v=fZMPDCNyQxE

Rolls-Royce Merlin, 27 litre V12: http://www.youtube.com/watch?v=cv0Onh6NzPA

I always describe the sound of a Merlin as what you would get if Ferrari made really big truck engines.

...laura

[DelicaDJ]

Merlin, eh?
http://www.youtube.com/watch?v=SIj2GVfu ... ata_player

[FalcoColumbarius]

Stick this in your Delica and smoke it...
(and she's only doing 120... knots. Turn the volume up a little...)

[Mr. Flibble]

Best Engine Sound IMO