How to code a sequential twin turbocharger in a jbeam?

I was aiming for a sequential twin turbocharger setup. The smaller turbo is a low psi, low inertia turbo. the second would require massive amounts of inertia, but also much more psi in favor. I'm a noob with coding, so I've tried everything I can think of in regards to making this work, and no luck. Can you help a brotha out?

 

I asked this awhile back when the turbo code was added in, they said its not possible they told me to make a fast spooling single to simulate twin sequential turbos.

 

Thanks for the reply. But, If we're only using a fast spooling turbo, how will we simulate the other turbo that takes a while to spool up?

 

If its meant to be a fast spooling and low psi turbo it might be worth using a supercharger. This may be why there is currently no twin turbo v6,8 setups in game yet.

 

That's the other point I brought up, I really wish they would add in simulation for twin sequential or more turbos.

You can try a supercharger/turbo setup to try to simulate.

yes its not the same but it can get the job done I guess.

 

Would you mind giving me a brief coding example in jbeam in how to have a supercharger and turbo under one slot?

 

This was in 0.6-0.7 I haven't played around with turbo/supercharger setups in 0.8 yet.

 

Gotcha. Maybe I'll try to add "supercharger" and everything under that either before or after the "turbo" section

 

i'm trying figure it out now.

 

Ok so I cant figure it out.

This is from my 0.7 hybrid super/turbocharger setup and it worked perfect.

Code:

{
"pickup_engine_v8_49": {
    "information":{
        "authors":"BeamNG",
        "name":"4.9L Twin Charge V8 Engine",
        "value":1300,
    }
    "slotType" : "pickup_engine",
    "flexbodies": [
         ["mesh", "[group]:", "nonFlexMaterials"],
         ["gavril_v8_pickup", ["pickup_engine"], [], {"pos":{"x":0, "y":0, "z":0}, "rot":{"x":0, "y":0, "z":0}, "scale":{"x":1, "y":1, "z":1}}],
         ["pickup_engbay", ["pickup_cab", "pickup_firewall", "pickup_frontmeat","pickup_engine_intake"]],
    ],
    "slots": [
        ["type", "default","description"]
        ["pickup_transmission","pickup_transmission_4A","Transmission"],
        ["pickup_exhaust_v8","pickup_exhaust_v8","V8 Exhaust"],
        ["pickup_supercharger","pickup_supercharger", "Intake",{"coreSlot":true}],
    ],
    "enginetorque":[
        ["rpm", "torque"]
        [0, 0],
        [500, 424.67],
    [600, 431.55],
    [700, 438.81],
    [800, 444.79],
    [900, 451.07],
    [1000, 456.22],
    [1100, 457.01],
    [1200, 458.14],
    [1300, 462.06],
    [1400, 465.29],
    [1500, 468.47],
    [1600, 471.89],
    [1700, 474.56],
    [1800, 475.28],
    [1900, 475.73],
    [2000, 475.7],
    [2100, 475.33],
    [2200, 480.69],
    [2300, 485.28],
    [2400, 488.54],
    [2500, 488.7],
    [2600, 485.34],
    [2700, 483.85],
    [2800, 482.41],
    [2900, 480.18],
    [3000, 477.64],
    [3100, 474.72],
    [3200, 474.78],
    [3300, 473.9],
    [3400, 472.81],
    [3500, 469.46],
    [3600, 467.71],
    [3700, 465.1],
    [3800, 461.92],
    [3900, 457.59],
    [4000, 454.08],
    [4100, 448.02],
    [4200, 443.13],
    [4300, 439.33],
    [4400, 434.52],
    [4500, 429.51],
    [4600, 425.29],
    [4700, 420.94],
    [4800, 416.88],
    [4900, 412.26],
    [5000, 407.51],
    [5100, 403.05],
    [5200, 398.07],
    [5300, 393.01],
    [5400, 387.88],
    [5500, 382.8],
    [5600, 378.56],
    [5700, 373.35],
    [5800, 369.91],
    [5900, 364.82],
    [6000, 358.92],
    [6100, 353.45],
    [6200, 347.95],

    ],
        "turbocharger": {
        "wastegateStart":3,
        "wastegateLimit":5,
        "maxExhaustPower": 10000,
        "backPressureCoef": 0.000035,
        "frictionCoef": 1.3,
        "inertia":10.2,
    "bovEnabled":false,
        "bovSoundVolumeCoef": 0.0,
        "bovSoundFileName": "TurboBovSound",
        "pressurePSI":[
            //turbineRPM, pressure(PSI)
            [0,         -0.5],
            [30000,     1],
            [60000,     3],
            [90000,     8],
            [150000,    15],
            [200000,    24],
            [250000,    30],
        ],
        "engineDef":[
            //engineRPM, efficiency, exhaustFactor
            [0,     0.0,    0.0],
            [500,   0.00,   0.14],
        [750,   0.00,   0.30],
            [1000,  0.09,    0.42],
        [1200,  0.45,    0.55],
            [1400,  0.75,    0.75],
            [2000,  0.70,    0.95],
            [2500,  0.70,    1.00],
            [3000,  0.70,    1.00],
            [3500,  0.70,    1.00],
        [4000,  0.70,    1.00],
        ],
    }, 
    "engine":{
        //engine performance
        "idleRPM":850,
        "shiftDownRPM":1200,
        "shiftUpRPM":5800,
        "maxRPM":6200,
        "inertia":0.26,
        "friction":17
        "brakingCoefRPS":0.25
        "burnEfficiency":0.60
        "throttleSensitivity":1.1
        "torqueReactionNodes:":["e1l","e2l","e4r"]
        "particulates":0.165

        //cooling and oil system
        "thermalsEnabled":true
        "engineBlockMaterial":"iron"
        "oilVolume":6

        //engine durability
        "cylinderWallTemperatureDamageThreshold":150
        "headGasketDamageThreshold":1500000
        "pistonRingDamageThreshold":1500000
        "connectingRodDamageThreshold":1500000
    },
    "nodes": [
         ["id", "posX", "posY", "posZ"],
         {"selfCollision":false}
         {"collision":true}
         //--4.1L I6 Engine-
         {"frictionCoef":0.5},
         {"nodeMaterial":"|NM_METAL"},
         {"nodeWeight":48},
         {"group":"pickup_engine"},
         {"engineGroup":"engine_block"}
         ["e1r", -0.14, -1.07, 0.43,{"chemEnergy":1000,"burnRate":0.39,"flashPoint":800,"specHeat": 0.1,"selfIgnitionCoef":false,"smokePoint":650,"baseTemp":"thermals","conductionRadius":0.2}],
         ["e1l", 0.14, -1.07, 0.43],
         ["e2r", -0.14, -1.72, 0.43,{"chemEnergy":1000,"burnRate":0.39,"flashPoint":800,"specHeat": 0.1,"selfIgnitionCoef":false,"smokePoint":650,"baseTemp":"thermals","conductionRadius":0.2}],
         ["e2l", 0.14, -1.72, 0.43],
         {"engineGroup":["engine_block","engine_intake"]}
         ["e3r", -0.15, -1.07, 0.88,{"chemEnergy":1000,"burnRate":0.39,"flashPoint":800,"specHeat": 0.1,"selfIgnitionCoef":false,"smokePoint":650,"baseTemp":"thermals","conductionRadius":0.2}],
         ["e3l", 0.15, -1.07, 0.88],
         ["e4r", -0.15, -1.72, 0.88,{"isExhaust":true,"chemEnergy":1000,"burnRate":0.39,"flashPoint":800,"specHeat": 0.1,"selfIgnitionCoef":false,"smokePoint":600,"baseTemp":"thermals","conductionRadius":0.2}],
         ["e4l", 0.15, -1.72, 0.88],
         {"engineGroup":""}
         {"group":""},
    ],
    "beams": [
          ["id1:", "id2:"],
          {"beamPrecompression":1, "beamType":"|NORMAL", "beamLongBound":1.0, "beamShortBound":1.0},
          //--ENGINE CUBE--
          {"beamSpring":12600840,"beamDamp":390},
          {"beamDeform":142500,"beamStrength":"FLT_MAX"},
          ["e1r","e1l"],
          ["e1r","e2r"],
          ["e1r","e2l"],
          ["e1r","e3r"],
          ["e1r","e3l"],
          ["e1r","e4r"{"isExhaust":true}],
          ["e1r","e4l"],
          ["e1l","e2r"],
          ["e1l","e2l"],
          ["e1l","e3r"],
          ["e1l","e3l"],
          ["e1l","e4r"],
          ["e1l","e4l"],
          ["e2r","e2l"],
          ["e2r","e3r"],
          ["e2r","e3l"],
          ["e2r","e4r"],
          ["e2r","e4l"],
          ["e2l","e3r"],
          ["e2l","e3l"],
          ["e2l","e4r"],
          ["e2l","e4l"],
          ["e3r","e3l"],
          ["e3r","e4r"],
          ["e3r","e4l"],
          ["e3l","e4r"],
          ["e3l","e4l"],
          ["e4r","e4l"],
          {"beamPrecompression":1, "beamType":"|NORMAL", "beamLongBound":1.0, "beamShortBound":1.0},
    ],
    "triangles": [
            ["id1:","id2:","id3:"],
            //engine
    ],
},
"pickup_supercharger": {
    "information":{
        "authors":"BeamNG",
        "name":"Hybrid Turbo/Supercharger",
        "value":600,
    }
    "slotType" : "pickup_supercharger",
    "flexbodies": [
         ["mesh", "[group]:", "nonFlexMaterials"],
         ["pickup_supercharger", ["pickup_engine", "pickup_framecab"], [], {"pos":{"x":0, "y":0, "z":0}, "rot":{"x":0, "y":0, "z":0}, "scale":{"x":1, "y":1, "z":1}}],
    ],
    "supercharger": {
        "gearRatio":1.6,
        "clutchEngageRPM":0,
        "pressureRatePSI":500,
        "pressurePSIPer1kRPM":2.5,
        "crankLossPer1kRPM":0.05,
        "type":"roots",
        "boostController":[
            //throttle in %, factor
            [0,     0.2],
            [100,     1],
        ],
    },
    "engine":{
        "idleRPM":850,
        "shiftDownRPM":1400,
        "shiftUpRPM":5800,
        "highShiftDownRPM":2000,
        "highShiftUpRPM":5800,
        "maxRPM":6200,
        "inertia":0.37,
        //"clutchTorque":900
        "brakingCoefRPS":0.15
        "burnEfficiency":0.62
        "throttleSensitivity":1.22

    },
}
}

This is my attempt on trying to make a 0.8 version similar.

They are showing up as two separate parts even though they both have the same slot type

Code:

{
"pickup_turbocharger_S2": {
    "information":{
        "authors":"BeamNG",
        "name":"Stage 2 Turbocharger",
        "value":1200,
   
    }
    "slotType" : "pickup_turbocharger",
    "turbocharger": {
        "wastegateStart": 35,
        "wastegateLimit": 40,
        "maxExhaustPower": 10000,
        "backPressureCoef": 0.0000916,
        "bovEnabled":false,
        "bovSoundVolumeCoef": 0.0
        "frictionCoef": 1272.5,
        "inertia":7,
        "pressurePSI":[
            //turbineRPM, pressure(PSI)
            [0,         0],
            [10000,     0],
            [15000,     0],
            [20000,     0],
            [30000,     0],
            [40000,     0],
            [50000,     15],
            [60000,     18],
            [70000,     24],
            [80000,     28],
            [90000,     35],
            [100000,    40],
        ],
        "engineDef":[
            //engineRPM, efficiency, exhaustFactor
            [0,     0.0,    0.0],
            [250,   0.0,   0.1],
            [500,  0.0,   0.2],
            [800,  0.0,   0.3],
            [1400,  0.0,    0.4],
            [2000,  0.1,    0.7],
            [2500,  0.2,    0.8],
            [3000,  0.3,    0.9],
        ],
    },
    "mainEngine":{
        "idleRPM":500,
        "maxRPM":7000,
        "burnEfficiency":0.30
        "cylinderWallTemperatureDamageThreshold":150
        //turbocharger name
        "turbocharger":"turbocharger",
     
 
        },
    }
    "pickup_supercharger": {
    "information":{
        "authors":"BeamNG",
        "name":"Stage 2 supercharger/turbocharger hybrid",
        "value":1600,
    }
    "slotType" : "pickup_turbocharger",
    "flexbodies": [
        ["mesh", "[group]:", "nonFlexMaterials"],
        ["pickup_supercharger", ["pickup_engine", "pickup_framecab"], [], {"pos":{"x":0, "y":0, "z":0}, "rot":{"x":0, "y":0, "z":0}, "scale":{"x":1, "y":1, "z":1}}],
    ],
    "supercharger": {
        "gearRatio":1.3,
        "clutchEngageRPM":0,
        "pressureRatePSI":500,
        "pressurePSIPer1kRPM":4.3,
        "crankLossPer1kRPM":0.035,
        "type":"roots",
        "boostController":[
            //throttle in %, factor
            [0,     0.2],
            [100,     1],
        ],
    },
    "mainEngine": {
        "idleRPM":500,
        "maxRPM":7000,
        "burnEfficiency":0.26,
        "revLimiterRPMDrop":50,
     
        //supercharger name
        "supercharger":"supercharger",

        //engine durability
        "cylinderWallTemperatureDamageThreshold":220,
    },
    "vehicleController": {
        //"highShiftUpRPM":6400,
    },
}
}

So what am I doing wrong?

 

You don't, you just have to mess with making an unrealistic profile for the single turbo that roughly matches the twin, but it's a far from ideal solution

 

Wouldn't know myself, but how's this for a fake twin turbo? (Wait for 3rd gear pull)
Didn't realize it was recording from system other than directly from the audio source.