Efficient Engine Design ???

[Christ]

I'll have to see if I can find you some information on the Supra setup. It may be a B-series only setup, though.

Ironically, there is a '88 Supra in the junkyard up here.

[pgfpro]

Originally Posted by Christ

I'll have to see if I can find you some information on the Supra setup. It may be a B-series only setup, though.

Ironically, there is a '88 Supra in the junkyard up here.

That would be cool!

Thanks!!!

[Christ]

From D-Series Engine Building Notes

B16A Rods matched with non-US Supra 1G-GTE pistons:

I calculated the following #'s for this combo
Piston volume = -7cc dish
Compression height = 33mm
Rod length = 134mm

Pro's of this setup = Strong B16 rods and forged Supra pistons

This is information has been gathered from Turbopanda ( username on Honda | Acura Research, Reviews, Performance Parts, Owners - Honda-Tech.com ). He sells this set-up for about $400.

The shorter B16 rods with a D16 stroke will result in a 1.49 rod/stroke ratio, down from the stock D16 1.52 R/S ratio.

The Toyota pistons' height make up for the length of the rod, that's why it’s still usable in a D series engine.

1G-GTE Supra pistons are 75mm. B16A rods are a lot stronger than D16 rods, and can handle boost way better. The rods are modified in order to accept the Toyota pistons. Installation is as simple as replacing your pistons and rods. The Crankshaft needs no modification, although the bottom of the short block will need to be notched a little so that there is enough clearance for the B16A rods

I had sourced this setup for my Civic when I planned on a boosted ZC DOHC originally, for under $300 parts and labor using a local machine shop and new rods/pistons.

[Christ]

ON that same page, there is a reference to using LS (B18 rods with GX pistons, but no mention of the outcome of that setup in any particular engine.)

There are lots of different engines with 75mm pistons in them, actually, including G10's. (Which might use the same pistons as the Vitara, I think.)

[user removed]

Argonne Labs is working on an IC engine with a goal of 60% efficiency.

I think it's possible but it will take just about everything currently known to get there.

I wish they would look at my design, but there is probably not much chance of that.

regards
Mech

[pgfpro]

Originally Posted by Old Mechanic

Argonne Labs is working on an IC engine with a goal of 60% efficiency.

I think it's possible but it will take just about everything currently known to get there.

I wish they would look at my design, but there is probably not much chance of that.

regards
Mech

Do you have some more info on this engine Argonne Lab is working on?

Also I wish someone would look at your design also. Its about time to upgrade from the old ICE.

[bgd73]

wow. I may get back to read the rest of the post, I stopped at "bsfc" (what in heck is that?!)
and ended up browsing half the universe.

interesting engine this one:

Controlled Combustion Engine - Wikipedia, the free encyclopedia


never heard of that either.

rotax, benz, crazy 5 main...never heard of a "revetec"..

the bsfc can be changed dramatically through compression and that brings noise. I found a v8 after tearing it down, at 9:1 only used less than the top third of its cylinder (heat marks in the cylinders, engine was maybe 20 years old), I then learned a monster can come from the same engine if to step up the heads to 10:1...and not many like it, as far as regular driving and true comfort, lack of vibrations come with lack of efficent. Manufactures love this, they can babble all day long about longevity by barely running them, using weak stuff. It's called lard ass of laziness, I mean capitalist.

it is the reason alot of legend engines have left, from 3 main boxer to simple v8 diesels to even a 396 chevy (non-siamesed bores) the potential for outrageous power from thier fuel...and they killed production for capitalism.

I gotta sunscribe to this thread and wander off finding definitons of the rest of the post sometime.

[user removed]

Originally Posted by pgfpro

Do you have some more info on this engine Argonne Lab is working on?

Also I wish someone would look at your design also. Its about time to upgrade from the old ICE.

It was Oak Ridge, not Argonne.

Green Car Congress: ORNL Research Project Seeks to Boost Combustion Engine Efficiency To 50-60% By Reducing Combustion Irreversibility; RAPTR

I may be wrong, I seem to remember Argonne Labs mentioned but this link is to the Oak Ridge entry.

You can find a lot of info on Green Car Congress by going to the engines topic.
Mine was there in the summer of 2006 and caused quite a heated debate with one poster who was trying to push othe OPOC design.

I'll post on mine in another thread later today.

regards
Mech

[pgfpro]

Originally Posted by Old Mechanic

It was Oak Ridge, not Argonne.

Green Car Congress: ORNL Research Project Seeks to Boost Combustion Engine Efficiency To 50-60% By Reducing Combustion Irreversibility; RAPTR

I may be wrong, I seem to remember Argonne Labs mentioned but this link is to the Oak Ridge entry.

You can find a lot of info on Green Car Congress by going to the engines topic.
Mine was there in the summer of 2006 and causd quite a heated debate with one poster who was trying to push othe OPOC design.

I'll post on mine in another thread later today.

regards
Mech

Thanks for the link!!! Lots of good info.

I like this one something that I understand now.

Longer term, the team is looking to evaluate fuel effects, the effects of major configuration changes, and to translate the results to proposed ICE concepts.

Asked whether there was a conflict between the thermal recuperation aspect of this work and the effort that the industry has put into chargers and EGR coolers, Daw said:

If you are looking at just extracting piston work alone, cooling the charge actually is a benefit. What you are doing, though, is destroying some of that exergy which could be extracted in other ways from the exhaust. You have to take a global systems perspective, and not look just at what you get out from the piston work by itself...

The other example of that now is where we have been going to lean engines. Going lean also destroys exergy because essentially you are diluting the energy released from flame. While in the end that is beneficial for producing piston work, the global effect is in the wrong direction.

Where all this is leading to, we need to relook at whole picture particularly with engines now where we may perhaps extract work in multiple ways.

[Tygen1]

How much boost are you running at these low load crusing rpm's while lean burning? You'd think a turbo big enough to make 450hp at 30psi wouldn't do much at under 2000 rpm...Is the Turbo just helping to reduce pumping loss in these conditions?