Showoff your ecoboxes!

[oxygen]

So this topic is about to showoff your ecoboxes! Here is mine, 2 liter inline 6, best i can get.

[Juno8]

I never build Eco engines...I am Detroit, the word Economy does not appear in my dictionary LOL

[darkjedi]

detroit used to build some very good diesels, so the city has heard of economy.

[Drazlab]

i find it hard to make anything other then a v8, maybe its an australian thing....

[oxygen]

I never build Eco engines...I am Detroit, the word Economy does not appear in my dictionary LOL

Yea and that may be part reason why people are afraid that the world will run out of oil soon..

Still i guess that almost 37% economy is good in this stage of the game? After turbo update i guess there will be "slight" improvement in the economy of the engines.

[darkjedi]

that engine with 37 % economy will never be usable in real life

[oxygen]

that engine with 37 % economy will never be usable in real life

Maybe would be better if you shared with us(or just me), why not? If you mean those service costs here's my answer to that. And still over 36%

Automation Launcher 2013-03-11 18-12-50-43.jpg (268.59 KiB) Viewed 7281 times

[oldgreg]

Maybe would be better if you shared with us(or just me), why not?

I can't speak for darkjedi, but the most glaring issue IMO is the ~2000 man hours required to put it together. It's all well and good to max out the "quality" sliders in the sandbox but when you eventually get to play with the full game, man hours are going to come with a pricetag attached. Automation's "man-hours" calculations may or may not be particularly accurate so direct comparisons may not be all that useful, but in the real world the Big 3 in Detroit pay ~$70 per man hour (wages, benefits, payroll taxes, etc). In real world terms that engine will cost $140,000 in man hours alone on top of the similarly inflated overhead costs. At the end of the day that's probably a $200,000 engine, and there's nothing even remotely economical about that, and that's if you could even manage to sell one, which you couldn't. And since no one in their right mind would spend $200k on an econobox, the huge capital investment you made in tooling and factory set-up would be a total loss.

A much more interesting approach would be to set all of the quality sliders to -15, set yourself a power goal of perhaps 100hp or kW or whatever, a minimum lifespan of maybe 80,000 miles and see how low you can get the bsfc. Now that would be an econobox engine.

[darkjedi]

besides being a 2020 engine, it uses stuff which are not for the ordinary car(race exhausts, 5 valves per cyl, 100 octane expensive and hard to find fuel)also the torque curve is wrong and the quality is execessive.

[oldgreg]

Here's what I consider to be a suitable engine for an econobox: A 2012 model year 100hp 1.4L with a nice flat torque curve, running on regular gas with 28.4% efficiency. And with quality set to -15 for everything except the fuel system it takes only a paltry 34.8 man hours to assemble. It would be a roughly ~$4000 engine for perhaps a ~$12k-14k car.

[justtesa]

2077cc DOHC (2.1L)

36,64 % ... Not much Power, but sweet torque

[oxygen]

besides being a 2020 engine, it uses stuff which are not for the ordinary car(race exhausts, 5 valves per cyl, 100 octane expensive and hard to find fuel)also the torque curve is wrong and the quality is execessive.

Race exhaust manifold, yeah it's there, but why can't it be?
5 Valves, it isn't that rare, you know.
100 octane, depends where you live, but at least in Finland we can find 100 octane fuel.
And how do you define wrong torque curve?

[justtesa]

what makes me wonder is that the race exhaust manifold did a better job @ 1500-2500 rpm,
so there was a slight increase in efficency in compare with the short cast manifold. Very strange...

Torque curve may be very optimistic, but not wrong.

[Spaceweed]

http://i.imgur.com/72gWXoI.jpg I don't know how to embed an image properly So I uploaded it here.

I did my own interpenetration of a modern Honda eco petrol engine. You can see the VTEC KICKING IN YO!

I thought it would be interesting to compare fuel injection types, and it was, here are the multi and DFI side by side.

I'm fairly sure Honda still use MEFI, and looking at this, I can actually understand why.

[Daffyflyer]

what makes me wonder is that the race exhaust manifold did a better job @ 1500-2500 rpm,
so there was a slight increase in efficency in compare with the short cast manifold. Very strange...

Torque curve may be very optimistic, but not wrong.

The race manifold gives good torque gains across a few different points, (calculated based on its length), its only real disadvantage is that its huge, and frighteningly slow/expensive to make.