automationgame.com

So how about some eco figures?
The idea is a series of turbocharged engines ranging from 1.0L to 3.2L I6 which are half way to diesels in terms of power to torque ratio, high efficiency that can haul heavy vehicles relative to their horse power.
The idea is a boost threshold of 1500rpm max, but i will get to it after there will be more options in the turbo section. (you can do it with the inline 6 configuration with up to 1 bar though)
All of the engines are 91 RON tuned except for the 95 RON tuned 2.5L and 3.2L which are to be used in vehicles of customers that dont buy fuel with less than 95 octane
Dont mind the written figures, all of the engines reaching 95%-99% of their power at 5000rpm or less.













Here is an example of the 2.0L in a double-clutched, AWD, 1700kg wagon.

Your engines are very peaky. It is a flat torque curve you want, not flat power.

He is using very small turbos, that is why the torque curve is falling after the peak.
Will hopefully get better once the new turbo calculations gets implemented.

I have a question for KD, do you use VVT and VVL in your engines?

because you can sustain the torque throughout the engine band if used correctly, otherwise to wring out the engines the way they sit you need a very fancy transmission setup with high ratios at the lower gears and very low ratios at the top end, which means reaching the top speed will be very sluggish.

Good econ figures but you need to balance the performance, don't forget a very important thing though:

the economy is calculated based on an average through the RPM ranges your most efficient range seems to be the 2000-3000 RPM range which is where your turbo starts boosting, you can't keep the engine for cruising in that range, you get a very erratic power delivery, and you have to keep your engine (1.6 version) out of the 4000 rpm+ range, otherwise the economy will worsen. the best remedy is to make the curve a little less dramatic in the 2000-4000 range.

I thought economy was between 1500 and 2500rpm (or 1500 and 2500rpm) only

You need VGT or ALS system to do that, not available, hopefully will be

As i wrote, this is just the idea's schematics, but it seems that at least for now that torque doesnt pay off.
I tuned the 2.0L, less torque, more hp while maintaining the same efficiency figure.
The results on the wagon are the same fuel economy and 0.5 faster 0-100
And there is only VVT + exhaust.



Thanks for the comments.

in my mind anything above 30% efficiency is pretty good

Very nice torque curve, looks like what a real engine would have.
When your peak power is so much earlier than the max rpm, you can get better reliability by lowering the rpm. See what you get if you limit it to 6000 rpm. 300-600 over peak power seems normal IRL.

We will never have antilag systems, no sane or legal car company would ever install that, unless parts were needed for homologation reasons.

Go and tell that to VW.
This series is designed to work as fast as 6500rpm, stress is starting to exist just at 6600rpm. when i bring the limiter to 5700rpm the reliability is getting higher by just 0.5 and the acceleration is being compromised due to a smaller power band, which is the opposite of what those engines supposed to be.

My Opel Astra 1.6l 16v has max power at 6000rpm, engine stops at 6500. My parents SAAB 9000 2.3l has max power at 5800 rpm, stops at 6200. Thats 400-500 over max power, IRL examples.
However, those are NA engines. Maybe a very broad power band on a turbo engine will benefit from a higher RPM over the max power peak.