concept engine

Intake, compression, power, then exhaust. Every 4-stroke engine ever made – about 80% of all engines currently in existence – function on this principle – even rotary engines. But now, Porsche has filed a patent to make a 6-stroke engine.

Aiming to make armored vehicles stealthier, Rolls-Royce is using this year's Eurosatory defense trade fair to debut a new concept hybrid diesel engine that not only makes tanks and such more efficient, but easier to hide.

An innovative new combustion engine eliminates half the guts of a traditional engine, and uses a fascinating internally rotating piston and sleeve arrangement, making it lighter, simpler and more efficient while still making strong power and torque.

With a slogan like “The Future is Ecclectic,” we’d expect some interesting things from INNengine, a startup based in Spain. The company is showcasing a “one-stroke” engine that works as an opposed piston with a wavy twist.

Rolls-Royce has completed the first ground tests on its massive UltraFan engine, claiming it's at least 10% more efficient than any other large aero engine in service today. This carbon/titanium beauty will roll out on airliners in the 2030s.

Rolls-Royce says it's finished building the first demonstrator for its massive UltraFan engine, which will eventually hit the skies in airliners to be developed in the 2030s. Testing begins soon, with expectations of a 25% leap in efficiency.

The new CJ Surge concept is a classic pre-Wrangler Jeep with a 200-kW electric drive powering all 4 wheels. The restomod has potential to be more than just a one-and-done, allowing Mopar to explore the possibility of an aftermarket electric kit.