Your cart is empty

Shop

Quantity: 0

Total: 0,00

0

Wankel engine

Wankel engine

A type of rotary engine of high efficiency

Physics

Keywords

Wankel engine, internal combustion engine, engine, petrol engine, heat engine, thermodynamics, cylinders, bar, engine block, eccentric shaft, rotary piston, spark plug, fuel, injector, generator, rotary disk, four-stroke, automobile, car, crankshaft, petrol, carburetor, mechanical energy, combustion product, environmental pollution, air pollution, automobile factory, heat energy, physics

Related items

Scenes

  • - The spark plug ignites the mixture of air and gasoline. The explosion pushes the rotor, therefore the shaft turns.
  • - It ignites the mixture of air and gasoline.
  • - It vaporizes and pumps fuel into the combustion chamber by an electric pump. It improves fuel efficiency and increases power output compared to that of carburettors.

  • fuel tank - The fuel used in four-stroke Otto engines is gasoline. An important attribute of gasoline is the octane number. The higher the number, the higher is its combustion limit, therefore it can be compressed more, resulting in greater efficiency.

  • - The spark plug ignites the mixture of air and gasoline. The explosion pushes the rotor, therefore the shaft turns.
  • - It vaporizes and pumps fuel into the combustion chamber by an electric pump. It improves fuel efficiency and increases power output compared to that of carburettors.
  • - It ignites the compressed mixture of air and gasoline.

Narration

We know that cars are powered by engines, but how does this work exactly? The rotating motion of an engine’s crankshaft is transmitted to the wheels by the drive shaft. The gearbox changes the number of rotations of the driven wheels during one turn of the crankshaft. In low gear, the output of the engine is high but the speed is low; in high gear, the car is faster and uses less fuel but accelerates more slowly.

Unlike four-stroke Otto and Diesel engines, the Wankel engine contains rotary pistons.

The spark plug ignites the mixture of air and petrol in the engine; the explosion pushes the rotary piston and the shaft turns.
The four strokes of a typical Otto cycle occur in all three combustion chambers of the Wankel engine; that is, three power strokes occur during each full turn of the crankshaft. The animation shows the processes taking place in one of the three combustion chambers.

As the rotor turns during the first stroke, the volume of the combustion chamber increases, reducing the pressure inside. This is why air flows into the chamber and the injector injects petrol into the combustion chamber.

During the second stroke, the turning rotor compresses the mixture of air and fuel.

The third is the power stroke: the spark plugs ignite the compressed mixture of fuel and air, and the explosion forces the rotor to turn.

The exhaust gases are expelled through the exhaust manifold during the fourth stroke.

The construction and operation of Wankel engines are simpler than that of reciprocating piston engines, although the widespread use of these engines has been prevented by excessive wear, poor lubrication and greater environmental impact.

Related items

Diesel engine

The German engineer Rudolf Diesel patented the diesel engine in 1893.

Four-stroke Otto engine

This animation demonstrates the type of engine most commonly used in cars.

Radial engine

Radial engines are used primarily in airplanes and helicopters.

Stirling engine - hot-air engine

Stirling engines are also known as external combustion engines. Unlike internal combustion engines (e.g. Otto-engine), here combustion takes place outside...

Two-stroke engine

A two-stroke engine is a type of internal combustion engine with a cycle of only two (power) strokes.

p-V-T diagram for ideal gases

The relationship between the pressure, volume and temperature of ideal gases is described by the gas laws.

Watt´s steam engine (18th century)

The steam engine, perfected by the Scottish engineer James Watt, revolutionized technology.

Construction of cars

This animations demonstrates the exterior and interior construction of cars, as well as their operation.

Environmentally friendly vehicles

Combining a conventional internal combustion engine propulsion system with an electric propulsion system reduces emission.

Ford Model T

The popular model of the American automobile factory was the first mass-produced car in the world.

Hero’s aeolipile

Hero of Alexandria is the inventor of the first steam engine, although he regarded it as an entertaining toy.

How does it work? - Gearbox

In transmission systems, the engine torque is modified by reducing or increasing rotational speed.

Motorcycle

This animation demonstrates the construction of motorcycles.

Unmanned aerial vehicles (UAV)

The range of applications of unmanned aerial vehicles ('drones') keeps growing.

Oil platform

A long pipe in the center of the tower penetrates the ocean bed until it reaches the layer that contains oil.

Operation of oil wells

Machinery that pumps crude oil to the surface

Added to your cart.