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feat(RaceCar): single-cylinder crankshaft model with four-stroke torq… #2

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47 changes: 47 additions & 0 deletions dyad/crankshaft.dyad
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"Single-cylinder race-engine crankshaft test model"
test component SingleCylinderRaceEngine
"Crank throw and crank-web inertia"
crank = RotationalComponents.Components.Inertia(J = 0.012)
"Flywheel and output-end inertia"
flywheel = RotationalComponents.Components.Inertia(J = 0.018)
"Crankshaft torsional stiffness and internal damping"
shaft = RotationalComponents.Components.SpringDamper(c = 4000.0, d = 2.0)
transmitted_torque = RotationalComponents.Sensors.TorqueSensor()
"Crank-angle-synchronous four-stroke torque ripple"
crank_angle = RotationalComponents.Sensors.AngleSensor()
four_stroke_angle = BlockComponents.Math.Gain(k = 0.5)
combustion_shape = BlockComponents.Math.Sin()
ripple_torque = BlockComponents.Math.Gain(k = 35.0)
"Mean plus ripple indicated engine torque"
mean_torque = BlockComponents.Sources.Constant(k = 55.0)
total_torque = BlockComponents.Math.Add()
cylinder_torque = RotationalComponents.Sources.TorqueSource()
"Viscous bearing and accessory loss"
bearing_loss = RotationalComponents.Components.Damper(d = 0.1)
fixed = RotationalComponents.Components.Fixed()
crank_speed = RotationalComponents.Sensors.VelocitySensor()
output_speed = RotationalComponents.Sensors.VelocitySensor()
relations
initial crank.phi = 0.01375
initial crank.w = 550.0
initial flywheel.phi = 0.0
initial flywheel.w = 550.0
connect(crank_angle.phi, four_stroke_angle.u)
connect(four_stroke_angle.y, combustion_shape.u)
connect(combustion_shape.y, ripple_torque.u)
connect(mean_torque.y, total_torque.u1)
connect(ripple_torque.y, total_torque.u2)
connect(total_torque.y, cylinder_torque.tau)
connect(cylinder_torque.support, fixed.spline)
connect(cylinder_torque.spline, crank.spline_a)
connect(crank.spline_b, shaft.spline_a, crank_speed.spline, crank_angle.spline)
connect(shaft.spline_b, transmitted_torque.spline_a)
connect(transmitted_torque.spline_b, flywheel.spline_a)
connect(flywheel.spline_b, bearing_loss.spline_a, output_speed.spline)
connect(bearing_loss.spline_b, fixed.spline)
end

analysis RaceEngineTransient
extends TransientAnalysis(stop = 0.05)
model = SingleCylinderRaceEngine()
end
30 changes: 0 additions & 30 deletions dyad/hello.dyad
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