User:RA2lover/Sandbox/Thermodynamics machinery notes/Combustion Processors

Internal Combustion Engine

Both the Combustion Centrifuge and Combustion Deep Miner share the same Internal Combustion engine, running these stages each tick:

Game Tick Combustion

Performed during game tick before all following actions.

Manual Combust

• Stores Game Tick combustion energy
• Force-combusts internal atmosphere on top of existing combustion (Combustion limiter^2 * 75%), clamped between 0.1% and 100%
  • Because maximum combustion limiter setting is 100%, this limits maximum force-combustion to 75% of whatever fuel mix was in the atmosphere after game tick combustion.
  • Because the combustion limiter is clamped into 10% increments, this leads to the following force-combustion percentages:

Force-Combustion Percentages

Combustion Limiter setting	Combustion Percentage
0%	0.1%
10%	0.75%
20%	3%
30%	6.75%
40%	12%
50%	18.75%
60%	27%
70%	36.75%
80%	48%
90%	60.75%
100%	75%

Speed Tick

• Target a 4000 kPa internal chamber pressure. Excess pressure is sent into exhaust during gas output stage.
• If internal atmosphere is above 300°C and total energy combusted combining game tick combustion and manual combustion exceeds 30 J:
  • Increase RPM by Internal atmosphere temperature(in Kelvin) / 5000 K (clamped between 0 and 12 RPM/tick)
  • Remove 30 J * RPM gained from internal atmosphere.
• Decrease RPM by 1%
• Check net RPM gain/loss after the previous steps.
• If RPM difference compared to is less than 1/ Lerp(0.8, 2, (Current RPM-300) / 1200 ), decrease stress percentage by 0.5, to a minimum of 0.
  • Otherwise, increase stress percentage by (RPM difference - 1) * Lerp(0.8, 2, (Current RPM-300) / 1200 )
• If stress percentage is at 100% or more, decrease RPM by 40 and enter shutdown state.

Shutdown state

(Only runs if the machine is powered off or if it has been overstressed to a shutdown state)

• Decrease RPM by 15.
• Target a RPM*4 kPa chamber pressure (limited to 4000 kPa). Excess pressure is sent into exhaust during gas output stage.

Gas Output Stage

• If internal chamber pressure is less than target, skip this stage.
• Otherwise, remove the smaller of:
  • PressurePerTick * 10 L at chamber temperature
  • 10% of Excess pressure(in kPa) * Internal atmosphere volume at chamber temperature
• Send removed contents into exhaust network.

Gas Input Stage

• If on, powered and not in a stress shutdown/error state:
  • Remove 0..0.01 mols from input network and move into combustion network, scaled from 0 to full throttle and add into internal atmosphere, to be combusted during next tick.
  • Note throttle is clamped into 10% increments - without a mol-limited input network you can only feed in fuel mix in multiples of 0.001 mol.

After the gas input stage, spark internal atmosphere if device is on and powered. This is not a part of the internal combustion engine's steps, but starts ignition on the next tick.

Combustion Deep Miner

• Process progress during server export tick, adding deltaTime * RPM/200 to progress time for current ore (also applies to regular deep miner)
• If elapsed progress is greater than the current ore's spawn time and machine is able to export, spawn a dirty ore chunk into its export slot and elapsed progress to 0, generating a new time until next chunk.

Combustion Centrifuge

• Process progress between shutdown handling state and gas output stage.
• Add game tick duration * RPM/300 progress time to thing being processed.
  • Base processing time for items is 6 seconds/item for dirty ore/reagent mix, 1 second for regular ores.
• Assert an error state if total processed reagents exceeds 3000g.
• If ejecting something during server export tick, increase stress by RPM/10% - 1%, limited to a minimum of 0%, then decrease RPM by 1/10th.
  • Reagents only get ejected if the contents for the respective reagent exceed 1g.
  • The order in which reagents is ejected is fixed. In descending priority:

Reagent Ejection Priority List

Flour

Milk

Egg

Iron

Gold

Carbon (Charcoal)

Uranium

Copper

Steel

Hydrocarbon (Coal Ore)

Silver

Nickel

Lead

Electrum

Invar

Constantan

Solder

Plastic

Silicon

Salicylic Acid

Alcohol

Oil (Soy Oil)

Potato

Tomato

Fenoxitone

Coloring (Red)

Coloring (Green)

Coloring (Blue)

Coloring (Yellow)

Coloring (Orange)

Pumpkin

Rice

Waspaloy

Stellite

Inconel

Hastelloy

Astroloy

Cobalt

Corn

Wheat

Biomass

Soy (Soybean)

Mushroom

Sugar

Cocoa

Cheese