Girish Mahajan (Editor)

Potez 4D

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Potez 4D

The Potez 4D was a four-cylinder, inverted inline aircraft engine. It was first built shortly before World War II, but did not enter full production until 1949. Like the othe D-series engines, the cylinders had a bore of 125 mm (4.9 in) and a stroke of 120 mm (4.7 in). Power for different models was in the 100 kW-190 kW (140 hp-260 hp) range.

Contents

Variants

4D-01
119 kW (160 hp)
4D-30
179 kW (240 hp)
4D-31
164 kW (220 hp)
4D-33
119 kW (160 hp)
4D-34
194 kW (260 hp)

Applications

  • Morane-Saulnier MS.570
  • Morane-Saulnier MS.700 Petrel
  • Max Holste MH.52
  • Nord 1202 Norécrin
  • Nord 3202
  • Nord 3400
  • SIPA S.70
  • S.N.C.A.C. NC-840 Chardonneret

    • Specifications (Potez 4-D 01)

    Data from Jane's All The World's Aircraft 1953-54.

    General characteristics

  • Type: Four-cylinder air-cooled inverted inline engine
  • Bore: 125 mm (4.92 in)
  • Stroke: 120 mm (4.72 in)
  • Displacement: 5.85 L (352 in³)
  • Length: 1,207.5 mm (47.5 in)
  • Width: 510 mm (20.1 in)
  • Height: 668.5 mm (26.3 in)
  • Dry weight: 143 kg (314.6 lb)

    • Components

  • Valvetrain: Two valves per cylinder with sodium cooled exhaust valves
  • Fuel system: One Zenith carburettor
  • Fuel type: 80 octane minimum
  • Oil system: Dry sump with one pressure and two scavenge pumps
  • Cooling system: air-cooled

    • Performance

  • Power output: 119 kW (160 hp) at 2,520 rpm (take-off), 97 kW (130 hp) at 2,360 rpm (Max cruise)
  • Compression ratio: 7:1
  • Specific fuel consumption: 245 gram/hp/hour (take-off)
  • Power-to-weight ratio: 0.83 kW/kg (0.51 hp/lb) (take-off)

    • References

    Potez 4D Wikipedia
    (Text) CC BY-SA