D
CNA D.4 on display at Museo Nazionale Scienza e Tecnologia Leonardo da Vinci
Type	4-cylinder air-cooled horizontally opposed piston engine
National origin	Italy
Manufacturer	Compagnia Nazionale Aeronautica (CNA)

The CNA D, often known as the CNA D.4, was a four-cylinder, air-cooled, horizontally opposed engine built in Italy by Compagnia Nazionale Aeronautica (CNA) between 1940 and 1951 to power light aircraft.^[1]

Applications

Data from Erickson^[1]

• Adam RA-14 Loisirs
• Ambrosini SAI.10
• CNA PM.1
• CNA MPL
• CVV Tartuca
• Druine Condor
• GCA Pedro
• GCA Etabeta
• Lombardi FL.3
• Lombardi FL.5
• Lombardi FL.7
• Macchi MB.308
• Viberti Muscal

Specifications

Data from ^[1]

General characteristics

• Type: 4-cyl. air-cooled horizontally-opposed piston engine
• Bore: 100 mm (3.9 in)
• Stroke: 95 mm (3.7 in)
• Displacement: 3 L (180 cu in)
• Dry weight: 80 kg (180 lb)

Performance

• Power output: 45 kW (60 hp) at 2,100 rpm
• Compression ratio: 5.3:1
• Specific fuel consumption: 0.34 kg/kW hr (0.56 lb/hp hr)^[2]