GT New Horizons · Extreme Voltage (EV)
Large Combustion Engine
The Large Combustion Engine (LCE) is an EV tier multiblock for generating power from combustible fuels. The LCE is a direct upgrade from singleblock combustion generators because it has much higher fuel efficiency and can output more than 1A of power. However, the LCE must be supplied with 1,000 L/h of lubricant to run, and optionally 40 L/s of oxygen to boost the machine. Boosting is highly recommended because it triples the maximum power output and increases the fuel efficiency from 100% to 150%. Power is extracted from a 4A dynamo hatch on the back of the machine. Do not exceed the maximum EU/t of the dynamo hatch or else it explodes. Save on fuel by automatically toggling the LCE with an RS latch connected to a Lapotronic Supercapacitor. The LCE is superseded by the Extreme Combustion Engine and the Universal Chemical Fuel Engine in IV.
Spreadsheet: GTNH Power Planner 2.9
Construction
The LCE has no tiered components. The maintenance hatch and muffler hatch may replace any stable titanium machine casing that is NOT touching a gear box casing. The input hatch(es) may replace any stable titanium machine casing that IS touching a gear box casing. A quadruple input hatch is recommended for inserting all the necessary fluids. The dynamo hatch is limited to the center casing on the right side of the structure, opposite the controller, and cannot be greater than 4A. Use the Multiblock Structure Hologram Projector to visualize/build the structure.
Structure
- Controller: Front left, 2nd layer
- 21 PTFE Frame Box
- 19 Chemically Inert Machine Casing
- 10-15 Stable Titanium Machine Casing
- 8 Engine Intake Casing
- 4 Titanium Gear Box Casing
- 1 Dynamo Hatch: Right center casing
- 1 Maintenance Hatch: Any titanium machine casing NOT next to a gearbox
- 1 Muffler Hatch: Any titanium machine casing NOT next to a gearbox
- 1+ Input Hatch: Any titanium machine casing next to a gearbox
- Mandatory Air: 4x2 area in front of the engine intake casings
Wallsharing
LCEs may wallshare each of their sides to save on casings, frame boxes, and buses/hatches. That does NOT include the input hatch due to the restriction on its location.
Usage
The LCE generates power from combustible diesel fuels. The following table lists the available options and their densities (EU/L). The most popular options are light fuel, diesel, and cetane-boosted diesel. Jet Fuel A and high octane gasoline are also fairly common, but they are typically used in the Extreme Combustion Engine or Universal Chemical Fuel Engine instead. The last two fuels have such high energy values that they cannot be used in the default mode.
| Diesel Fuel | EU/L | Input Rate | |
| Default | Boosted | ||
| Fish Oil | 2 | 1,024 L/t | 2,048 L/t |
| Short Mead | 4 | 512 L/t | 1,024 L/t |
| Biomass | 8 | 256 L/t | 512 L/t |
| Creosote Oil | 8 | 256 L/t | 512 L/t |
| Oil | 16 | 128 L/t | 256 L/t |
| Sulfuric Light Fuel | 40 | 51.2 L/t | 102.4 L/t |
| Octane | 80 | 25.6 L/t | 51.2 L/t |
| Methanol | 84 | 24.4 L/t | 48.8 L/t |
| Ethanol | 192 | 10.7 L/t | 21.3 L/t |
| Light Fuel | 305 | 6.71 L/t | 13.4 L/t |
| Bio Diesel | 320 | 6.40 L/t | 12.8 L/t |
| Butanol | 400 | 5.12 L/t | 10.2 L/t |
| Diesel | 480 | 4.27 L/t | 8.53 L/t |
| Ether | 537 | 3.81 L/t | 7.63 L/t |
| Gasoline | 576 | 3.56 L/t | 7.11 L/t |
| Cetane-Boosted Diesel | 1,000 | 2.05 L/t | 4.10 L/t |
| Ethanol Gasoline | 1,100 | 1.86 L/t | 3.72 L/t |
| Jet Fuel No.3 | 1,824 | 1.12 L/t | 2.25 L/t |
| Jet Fuel A | 2,248 | ---- | 1.82 L/t |
| High Octane Gasoline | 2,500 | ---- | 1.64 L/t |
The LCE has two operating modes, listed below. The machine automatically switches between them based on the available inputs. Boosting is highly recommended because it triples the maximum EU/t and increases the fuel efficiency from 100% to 150%. The oxygen is not difficult to sustain--simply build a sugar beet or sweed farm and electrolyze the sugar.
Default
- Inputs: Fuel + 1,000 L/h lubricant
- Output: Maximum 2,048 EU/t at 100% fuel efficiency
Boosted
- Inputs: Fuel + 1,000 L/h lubricant + 40 L/s oxygen
- Output: Maximum 6,144 EU/t at 150% fuel efficiency
The LCE also has its own efficiency value that is directly proportional to the power output of the machine. The efficiency of the LCE increases linearly while the machine is active and almost immediately resets back to 0% while the machine is idle. It takes 33s (default) or 100s (boosted) to reach maximum efficiency. This means the LCE should run for as long as possible but not forever because additional EU is voided once the dynamo hatch is full. View the current efficiency by using a Portable Scanner on the controller, or by looking at the efficiency value in WAILA.
Power is extracted from a 4A dynamo hatch on the right side of the structure. Do not exceed the maximum EU/t of the dynamo hatch, or else the LCE will explode. Breaking the dynamo hatch or exceeding the total EU is perfectly safe; the LCE will not explode if an attached battery buffer or Lapotronic Supercapacitor (LSC) is full and there is nowhere for the EU to go. Any additional EU is simply voided. It is highly recommended to automatically toggle the LCE with a redstone RS latch to avoid wasting fuel--see the LSC page for a guide on setting that up.
Trivia
- Fish oil, biomass, oil, and creosote oil are all valid fuels for the Large Semifluid Burner too and are much better there.