A crude but complex example of the future Wankel engine.

Originally the car was designed for a Wankel engine.

The combustion chamber of the Wankel engine is an epitrochoid.

Mazda was fully committed to the Wankel engine just as the energy crisis of the 1970s struck.

Another type of internal combustion engine is the Wankel engine.

It was not the normal reciprocal-piston deal; this one had a rotary Wankel engine.

In an aircraft application, the power-to-weight ratio is very important, making the Wankel engine a good choice.

Avgas is used in aircraft that have piston or Wankel engines.

The Wankel engine is actually a variable-volume progressing-cavity system.

Wankel engines that operate within their original design parameters are almost immune to catastrophic failure.

No motorcycles with Wankel engines have been produced for sale to the general public for road use since 1992.

Unlike modern Wankel engines, this version had both the rotor and housing rotating.

Recently, the Wankel engine has been developed for use in motor gliders where the small size, light weight, and low vibration are especially important.

The Rotapower Wankel engine would have the ability to operate on any fuel.

The basic concept is very similar to the Wankel engine, the "traditional" rotary, but predates it by some time.

But the rotor of a Wankel engine allows the four-stroke process to occur simultaneously.

Surface temperatures behave absolutely differently; the film of oil in the Wankel engine acts as insulation.

Mazda quickly rose in prominence, helped in large part to their use of Wankel engines.

Its goal was to produce Wankel engines.

An example of a pistonless rotary engine is the Wankel engine.

It was distinctive for using a 588 cc liquid-cooled twin-rotor Wankel engine.

The very compact Wankel engine delivers smooth high-rpm power.

The Wankel engine has 50% longer stroke duration than a piston engine.

Due to the compact size and low weight of a Wankel engine, it has found its way into electric vehicles as range extenders.

Wankel engines are becoming increasingly popular in homebuilt experimental aircraft, due to a number of factors.