Dan Gurney Patents New "Moment Cancelling" Engine
With a resume as accomplished as Dan Gurney has, he would be well within his rights to retire to a life of leisure. The man is 84 years old, after all. However, Gurney stays busy at his All American Racers shop in Santa Ana, California and he recently announced that he’s been granted a United States patent on what he calls the “moment cancelling” engine.
Gurney claims that by using two transversely oriented, counter-rotating crankshafts, the vibrations inherent in reciprocating piston engines will be reduced and reliability and efficiency will be improved, along with what he says will be turbine smoothness.
In its most basic form in a two-cylinder engine, each piston’s connecting rod spins it’s own crankshaft, with the two cranks spinning in opposite directions, cancelling out forces that would normally cause the engine to shake. Gears are used to combine and take power from the two crankshafts. Multiple cylinder engines are also possible, with the odd numbered pistons connected to one crankshaft and the even numbered pistons connected to the other.
Gurney says that the engine design has exceeded expectations when simulated in the digital domain and that he expects to have a physical prototype — an 1,800cc vertical twin — running by the end of this year. There’s a website, momentcancelling.com, describing the project, where you can peruse the simulation data and read about Gurney’s enthusiasm for the engine. The patent is and you can read it here. Mr. Gurney says that the new motor would be suitable for most current motorcycle and automotive applications.
Interestingly, Gurney points out how power output was relatively low on the design brief’s priority list. The primary goal of the moment cancelling engine, according to its inventor, is smoothness, simplicity and compactness.
Ronnie Schreiber edits Cars In Depth, a realistic perspective on cars & car culture and the original 3D car site. If you found this post worthwhile, you can get a parallax view at Cars In Depth. If the 3D thing freaks you out, don’t worry, all the photo and video players in use at the site have mono options. Thanks for reading – RJS
Join the conversation
Latest Car ReviewsRead more
Latest Product ReviewsRead more
- Jdt65724922 How can a Chrysler E-Class ride better than a Chrysler Fifth Avenue?
- Lorenzo This series is epic, but I now fear you'll never get to the gigantic Falcon/Dart/Nova comparison.
- Chris P Bacon Ford and GM have decided that if you can't beat 'em, join 'em. Odds are Chrysler/Cerberus/FCA/Stellantis is next to join in. If any of the companies like Electrify America had been even close to Tesla in reliability, we wouldn't be here.
- Inside Looking Out China will decide which EV charging protocol will become world wide standard.
- Chris P Bacon I see no reference to Sweden or South Carolina. I hate to assume, but is this thing built in China? I can't help but wonder if EVs would be more affordable to the masses if they weren't all stuffed full of horsepower most drivers will never use. How much could the price be reduced if it had, say, 200hp. Combined with the instant torque of an EV, that really is plenty of power for the daily commuter, which is what this vehicle really is.
Companies like Capstone Turbine are better positioned to capture the generator market. Very smooth, very efficient in their sweet spot, and reasonably accommodating towards different fuel types
http://www.motorcyclespecs.co.za/model/kawasaki/kawasaki_kr250%2084.htm The kawasaki kr 250 use a similar concept?