Radial Engines

 

Before the development of turbines / jet engines radial engines were exclusively used in aircrafts.

Apart from that battle tanks, few models of motor cars, motor cycles and few of the power generation units were also were using radial engines.

Radial engines are nothing but reciprocating internal combustion engines, where the cylinders are arranged radially at equal angular pitch. The pistons are connected to the crank shaft by a master-and-articulating-rod assembly. Odd number of cylinders used in a row or per row when there are more than one row of engines. This is done to achieve smooth running of the engine, by consistent every-other-cylinder-firing order. In a typical five cylinder engine the firing order will be 1-3-5-2-4-1 and so on, repeating again.

Most of the radial engines are four stroke engines with overhead poppet valves. The poppet valves are driven by pushrods and lifters on a cam plate, which is concentric with the crankshaft. There are also engine designs with individual camshafts within the crankcase for each cylinder, generally adopted for smaller radial engines. Few designs also adopted sleeve valves instead of poppet valves. One of the main advantage of radial engines is that its power-to-weight ratio is more favourable as compared to conventional reciprocation internal combustion engines.

Radial Engine in Aircraft

Radial Engine in Bike

 












Components & Assembly of Radial Engine



No comments:

Post a Comment