Encalc

YaMZ-236

The YaMZ-236 is the 11.15-litre V6 diesel that powered a generation of Soviet and CIS trucks, buses and tractors, and it is still in service in enormous numbers. At 130 mm bore by 140 mm stroke with 17:1 compression it operates in a completely different regime from the automotive presets: low rpm, very high peak cylinder pressure, and mechanical loads an order of magnitude larger. That makes it the natural preset for a crankshaft and connecting-rod strength study, where the forces are large enough that the safety factors actually matter. The calculator returns the full diesel cycle and the crank-train loads.

Preset parameters

Values below are the preset the calculator loads — you can change every one of them in the form. Angles are absolute crank angle (CA) on a 0–720° cycle.

Cycle4-stroke
FuelDiesel
Bore130 mm
Stroke140 mm
Swept volume1858 cm³/cyl
Compression ratio17:1
Rated speed2100 rpm
Mean piston speed9.8 m/s
Bore/stroke ratio0.93
Intake opens / closes706° / 234° CA
Exhaust opens / closes484° / 18° CA
Valve lift, intake / exhaust13.5 / 13.5 mm

Reference figures

Manufacturer figures carried by the preset for comparison. They are reference values, not calculator output.

Rated power132 kW per engine
Specific fuel consumption214 g/kWh
Mass820 kg

Notes for modelling

  • Peak cylinder pressure here is several times what the petrol presets produce — carry it into the stress calculator.
  • Low-rpm operation means gas forces dominate over inertial forces; the dynamic results show the split.
  • Six cylinders: multiply the per-cylinder effective power.

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