Renault 8G

8G
Type Liquid-cooled V-8 piston engine
National origin France
Manufacturer Renault
Major applications Dorand AR.1,
Developed into Renault 12F

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

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)

See also

Related development

Comparable engines

Related lists

References

Wikimedia Commons has media related to Scans from 'Renault 190HP aircraft engine manual'.
  1. ^ Renault 190 HP Notice descriptive et Règlement. Renault.