Renault 4P Explained
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 NaN95 to NaN150.
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 NaN115 bore and NaN140 stroke, delivered NaN95 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 NaN110 to NaN120, with the adoption of NaN120 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).
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 NaNinches115NaNinchesin (115in) bore and NaNinches140NaNinchesin (140in) stroke, delivered NaNkWNaNkW
- Renault 4Pa
Renault 4Pb
upright 95hp / 135kg (298lb) - Caudron Luciole
- Renault 4Pbi
Inverted development of the Pb retaining the NaNinches115NaNinchesin (115in) bore
- Renault 4Pc
Further development of the Ps retaining the NaNinches115NaNinchesin (115in) bore
- Renault 4Pci
inverted 4Pc
- Renault 4Pde
Renault 4Pdi
Inverted, introduced NaNinches120NaNinchesin (120in) 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 NaNkWNaNkW for take-off, the 4Pei entered production before WWII[1]
- Renault 4Pfi:
Renault 4Pgi
Inverted lower rated version, giving NaNkWNaNkW for take-off, using 73-octane fuel.[1]
- Renault 4Po
Renault 4Poi
NaNkWNaNkW with fuel injection.
- Renault 4P-01
Postwar production version of the 4Pei, rated at NaN145 for take-off.[2]
- Renault 4P-03
As the 4P-01 but with an inverted flight Zenith carburettor[2]
- Renault 4P-05
As for the 4P-03 but with a modified oil system[2]
- Renault 4P-07
As for the 4P-03 but with a modified carburettor[2]
- MV-4:Licence production of a NaNkWNaNkW 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.[3]
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.
Notes and References
- Book: Wilkinson, Paul H.. Aircraft Engines of the World 1945. Paul H. Wilkinson. New York. 1945. 3rd.
- Book: Wilkuinson, Paul H.. Aircraft Engines of the World 1946. Sir Isaac Pitman & Sons. London. 1946. Revised.
- Book: Kotelnikov, Vladimir . Russian Piston Aero Engines . 2005 . The Crowood Press Ltd. . Marlborough . 978-1-86126-702-3. 164–165.
