Jack-of-all-Trades Powerplant [Challenge]

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22

Here’s my new outline for a wide open challenge. Thoughts?

This challenge hopes to inspire a decently versatile engine, without requiring nor banning simpler engine configurations.

Once an engine meets the following requirements, it passes and gets 100 points. Additional points may be gained or lost.

Aspiration: Turbo
Specific output: 100.0HP/Litre(1000.0cc) or More
Service Costs: Under $2500 per year
Emissions: 39 or Less
Loudness: 25 or Less
Octane: 91 Unleaded

Engines that meet these requirements get 100 points.

Engines gain more points in the following 6 ways

PRODUCTION UNITS) +5 Points: Every 1.0 Production Unit under 10.0 Production Units per cylinder (eg. 108.0 PU / [V12] = 9.0 PU per Cylinder = 1.0 = 5 points)

MATERIAL COST) +5 Points: Every $25.0 Material Cost Under $625.0 per cylinder (eg. $4800 / [V8] $600 per cylinder = 5 Points

ENGINEERING TIME) +10 Points: Every 1.0 Engineering Time Under 22.0 Engineering Time per cylinder (eg. 84.0 ET / [i4] = 21.0 ET per cylinder = 10 points)

PERFORMANCE) +10 Points: Every 100 RPM the Redline exceeds Max Power

EFFICIENCY) +1 Point: Every 1.0% g/kWh Efficiency

RELIABILITY) +10 Points: Every 1.0 Reliability over 80.0

Engines “Bust” after scoring 75 Points or less.

Engines lose points in 4 ways

RESPONSE) -1 Point: Every 100 RPM Turbo takes to spool up to Max (eg. 8.9PSI @ 2800RPM = -28 points)

COMFORT) -1 Point: Every 1.0 Smoothness Under 70.0

UTILITY) -1 Point: Every 1.0 ft-lb-tq per Litre/1000.0cc Under 100.0 (eg. 350ft-lbs @ 5000cc = 70/L = -30 points)

DURABILITY) -1 Point: Every 1.0 Reliability under 78.0

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23

I can say that I like this idea much more, but still the requirements look very liberal at the first glance. Also right now there’s no point in making any other hp/l than precisely 100, which is a bit weird, I’d say - I’d add points also for that, especially since the “response” points will penalize too crazy turbos (although for me that penalty is too low, if the engine is meant to be a powerplant of a drivable car).

24

Thanks for the input.
And yeah I made it liberal again to make it easy to jump in, my first test build went okay so ill post what I came up with.

haha, I’m surprised cause I was pondering that one thinking I make it too easy to bust. But I got rid of size limit so large engines could theoretically compete.

25

Hmm, maybe 2 points for every 100rpm over 1000 (as it’s probably impossible to reach anyway) needed for the max spool?

26

Automation_Shipping_Steam 2017-03-01 11-22-58-43.jpg1920×1080 301 KB

8.6PU =5 Points
$278.5MC/c =65 Points
15= 60 Points
200= 20 points
19.46%= 19 Points
75.7= 0 Points

2500= -25 Points (proposing x2 readjustment)
63.7= -6Points (proposing x4 readjustment)
79.7ft-lbs= -20 Points
75.7= -2 Points (proposing x8 readjustment)
(110 Point penalty proposed)

216 Point Entry otherwise…

[edit] just noticed it actually doesn’t even qualify, regardless…

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