Oscillating engine simulator
Time step:
ms
1
x
Timing diagram:
Kick
Pause
0
Nm @
0
rpm =
0
W =
0
hp
0
% efficiency (
0
% without losses)
0
kg/sec air consumption
+ Add scope
Preset:
Wig-Wag
Wig-Wag (jes)
Steve's Workshop
Wobler
Muncaster Double
Bore:
mm
Stroke:
mm
Displacement:
0
cc
(+
0
cc)
Gap above piston at TDC:
mm
Piston+rod length:
mm
crank pin axis to top of piston
Pivot separation:
mm
Port swing radius:
mm
Inlet port diameter:
mm
Exhaust port diameter:
mm
Cylinder port diameter:
mm
Inlet port angle:
°
Exhaust port angle:
°
Flywheel diameter:
mm
Flywheel moment of inertia:
kg m
2
[calculator]
Piston can block ports?
e.g. cylinder port is drilled straight
Double-acting?
Gap below piston at BDC:
mm
Piston height:
mm
Rod diameter:
mm
Symmetric ports?
Port swing radius:
mm
Inlet port diameter:
mm
Exhaust port diameter:
mm
Cylinder port diameter:
mm
Inlet port angle:
°
Exhaust port angle:
°
Atmospheric pressure:
kPa
Supply pressure:
kPa
above atmospheric
Supply from infinite volume?
Reservoir volume:
mm
3
Fill port diameter:
mm
Static losses:
Nm
Speed-dependent losses:
Nm / rpm
Square-speed-dependent losses:
Nm / rpm
2
Load:
Nm
Air flow method:
TLV
Bill Hall
Trident 1
Trident 2
Bernoulli's equation
Linear
Apply
Reset
Pending changes, click "Apply"
Step size:
Nm
Chart title:
Plot torque curve
Maximum:
kPa
above atmospheric
Step size:
kPa
Chart title:
Plot pressure-speed curve
By
James Stanley
.
Thanks to
Steve Bodiley
for supplying torque data from his engine.
Thanks to
Ade Swash for the "Wig-Wag" engine
,
Steve Bodiley for the "Steve's Workshop" engine
, and
Julius de Waal for the "Wobler" engine
and
the "Muncaster Double" engine
.
Thanks to
TLV
, Duncan Webster, Bill Hall, and
Trident
for air flow data and formulae.