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Renault 130 hp V-12

From Alfawiki
Renault
IndustryAutomotive and aerospace engineering
Founded1899 in France
Headquarters
France

The Renault 130 hp V-12 is a twelve-cylinder, air-cooled V-type aircraft engine with a 90° configuration, manufactured by the French company Renault.

Design and development

Derived from the previous Renault 100hp V-12, the Renault 130 hp V-12 features an increased cylinder bank angle of 90° rather than 60°, along with larger displacement achieved through a 105 mm bore and 130 mm stroke. Its design shares bore and stroke dimensions with the Renault 80 hp V-8 engine.

The engine's cylinders and cylinder heads were individually cast from iron and equipped with cooling fins. These components were fastened to the crankcase using copper-asbestos washers combined with cross-shaped clamps. Airflow for cooling was produced by a fan linked to the rear of the crankshaft, which pushed air into a sealed chamber located between the cylinder banks, allowing it to circulate over the fins.

A single camshaft positioned between the two cylinder banks controlled both intake and exhaust valves, each operated by its own cam. The intake valves were actuated directly through tappets, whereas exhaust valves utilized push rods and rocker arms. The propeller was attached directly to this camshaft, which received power from the crankshaft via spur gear reduction.

The lower portion of the crankcase functioned as an oil sump, with pressurized lubrication delivered by a gear-driven pump powered through helical gears connected to the camshaft. Pistons were constructed from steel and fitted with three cast iron rings; these connected to the crankshaft via master-and-slave connecting rods. The crankshaft itself included six throws supported by five plain bearings along with two ball bearings.

Fuel was supplied through two Zénith 42 DC dual carburetors, one serving each bank of cylinders. Ignition was managed by a pair of magnetos mounted atop the camshaft at the propeller end, each magneto dedicated to one bank and driven by helical gears. Available magneto models included Bosch Z.U.6, S.E.V. C.6, and Lavallette types.

Applications

Preserved engines

  • A Renault 12Db variant of the 130 hp engine is exhibited at the Brussels Air Museum.
  • The Royal Air Force Museum in Cosford displays a Renault 12Dc model of this 130 hp engine.

External links

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