The Renault 4P, also called the Renault Bengali Junior, was a series of air-cooled 4-cylinder inverted inline aero engines designed and built in France from 1927, which produced from to .
Design and development Charles Lindbergh's Atlantic Ocean crossing in 1927 inspired Renault to enter the light aero-engine market to diversify the range of engines they offered. The resulting Renault 4Ps, with bore and stroke, delivered and proved popular, later versions powering several record-breaking light aircraft.
Developed by Charles-Edmond Serre, by 1931 the 6.3-litre 4Pdi had evolved to give to , with the adoption of bore steel cylinder liners, aluminium alloy cylinder heads attached by long studs to the crankcase, Duralumin connecting rods and magnesium alloy crankcase.
The 4Pei was produced in the USSR, with local equipment and features from the MV-6, as the Voronezh MV-4 (Motor Vozdushniy / Motor Voronezhskiy - air-cooled engine / Voronezh built engine {correct interpretation is unclear}).
In 1946 production of the Renault 4P-01 resumed at the SNECMA factory at Arnage, until 1949, with at least 762 engines manufactured.
Variants Renault 4Ps The initial version with bore and stroke, delivered Renault 4Pa
Renault 4Pb upright / - Caudron Luciole Renault 4Pbi Inverted development of the Pb retaining the bore Renault 4Pc Further development of the Ps retaining the bore Renault 4Pci inverted 4Pc Renault 4Pde
Renault 4Pdi Inverted, introduced bore steel cylinder liners, aluminium alloy cylinder heads attached by long studs to the crankcase, Duralumin connecting rods and magnesium alloy crankcase. 110 hp / 150 kg - Hanriot 16, 120 hp / 155 kg - Caudron Phalène Renault 4Pei Inverted, rated at for take-off, the 4Pei entered production before WWII Renault 4Pfi Renault 4Pgi Inverted lower rated version, giving for take-off, using 73-octane fuel. Renault 4Po
Renault 4Poi with fuel injection. Renault 4P-01 Postwar production version of the 4Pei, rated at for take-off. Renault 4P-03 As the 4P-01 but with an inverted flight Zenith carburettor Renault 4P-05 As for the 4P-03 but with a modified oil system Renault 4P-07 As for the 4P-03 but with a modified carburettor MV-4Licence production of a Renault 4Pei variant in the USSR at the Voronezh factory. 180+ were built in 1939 before production ceased, due to a shortage of indigenous carburettors.
Applications
Specifications (Renault 4P-01)
See also
References
Gérard Hartmann, Les Moteurs d'avion Renault Wilkinson, Paul H.. Aircraft Engines of the World 1945 3rd edition. Paul H. Wilkinson. 1945. New York. Wilkinson, Paul H.. Aircraft Engines of the World 1946 revised edition. Sir Isaac Pitman & Sons Ltd.. 1946. London.