Renault 8G

8G

Type	Liquid-cooled V-8 piston engine
National origin	France
Manufacturer	Renault
Major applications	Dorand AR.1,

The Renault 8G was a family of French liquid-cooled V-8 aero engines of the World War I era that produced from 140 hp (100 kW) to 190 hp (140 kW).

Design and development

Construction used separate cast iron blocks for each pair of cylinders, mounted on a light-alloy crankcase with an included vee angle of 50 degrees. Each bank had a single overhead camshaft, shaft-driven through bevel gears. It was equipped with a single dual-choke updraught Zenith carburettor, and twin spark ignition through four magnetos. The crankshaft was a flat plane with three bearings and four throws, each pair of cylinders sharing a master-slave connecting rod onto the same crankpin.

Variants

8G: 140 hp (100 kW)
8Ga: 150 hp (110 kW)
8Gb: 160 hp (120 kW)
8Gc: 175 hp (130 kW)
8Gd: 190 hp (140 kW)
8Gdy: 200 hp (150 kW)
8Ge: 200 hp (150 kW)

Applications

Dorand AR.1 - Renault 8Gd - 1917
Farman F.80 - Renault 8Gd
Dorand AR.2 - Renault 8Gdy

Specifications (8Gd)

Section on cylinder

Data from ^[1]

General characteristics

Type: 8-cylinder naturally aspirated liquid-cooled 50° "Vee" piston aircraft engine
Bore: 125 mm (4.9 in)
Stroke: 150 mm (5.9 in)
Displacement: 14.7 L (900 in³)

Components

Valvetrain: Overhead camshaft-actuated, single intake and single exhaust valve per cylinder
Fuel system: Twin-choke updraught carburettor
Oil system: Wet sump
Cooling system: Water

Performance

Power output:
192 hp (143 kW) at 1,500 rpm
196 hp (146 kW) at 1,550 rpm son régime normal
200 hp (150 kW) at 1,600 rpm son régime maximum
Specific power: 9.93 kW/L (0.22 hp/in³)

References

Wikimedia Commons has media related to Scans from 'Renault 190HP aircraft engine manual'.

↑ Renault 190 HP Notice descriptive et Règlement. Renault.

Renault aero engines

35-40 hp V-4 45 hp V-8 60 hp V-8 70 hp Type WB 70 hp Type WC 80 hp Type WS 100 hp V-8 130 hp V-8 100 hp V-12 120 hp V-12 160 hp 190 hp V-12 200 hp V-12 265 hp V-12 438 446 454 456 468 626 4B 4P 6P 6Q 7A 8A 8B 8C 8G 9A 9C 9P 12D 12E 12F 12H 12J 12K 12M 12N 12R 12S 18J Renault Bengali 4 Renault Bengali 6

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