Minié 4.D


Production of the Minié 4.D series of air-cooled, flat four engines began before World War II and resumed afterwards into the 1950s.

Design and development

Établissements Victor Minié, based in Colombes, only built low power flat-four aircraft engines, always using light alloy castings. Their first three known types, the 4 B0 Horus, 4 E0 Horus and 4 E2 Horus, produced only, and respectively. The 4 B0 was available with either single or dual ignition but all others had dual ignition.
The 4.D series, also dual ignition engines, were larger and more powerful. Production began in 1938. Halted by the Occupation of France during World War II, it began again in 1946, continuing until the company closed in 1954. Apart from the D4 Horus, all post-war engines had separate head and cylinder castings rather than the pre-war pairs.
The name Horus was used with all Minié's engines from the mid-1930s until 1949.

Variants

Data from Erickson unless noted.
;4.D0 Horus: 1938. First of D series. Heads and cylinders cast in pairs. Bore/stroke, capacity, power.
;4.D4 Horus: 1946–1948. Version of 4.D0 with same paired heads and cylinders. Specifications also as 4.D0.
;4.DA.25: 1946–1953. Separate heads and cylinders. Power at 2,430 rpm.
;4.DA.28 Horus: 1946–1953. Horus name dropped in 1949. Bore/stroke, capacity, power at 2,450 rpm.
;4.DC.32: 1949–1953. The most widely used variant in terms of number of applications; more than 150 units built. Bore/stroke, capacity, power at 2,575 rpm.
;4.DF.28: 1953–1954. Bore/stroke, capacity, power at 2,450 rpm.
;4.DG.00: 1953–1954. Cylinders with hemispherical heads. Bore/stroke, capacity, power at 2,250 rpm.

Applications

Data from Erickson unless noted.
4.D4 Horus
4.DA.25 Horus
4.DA.28
4.DC.32
4.DF.28