So there's yet another engine startup who claims to have the next big thing - this being a big displacement I4 engine that solves the bane of this type of engine: secondary imbalance as one gets bigger.
The below videos and patents by the company show their concept to be a variation of the Scotch Yoke or "Bourque" engine done as in inline 4..
(I like this channel, BTW, it's one of the better ones IMO).
The CEO wisely and astutely said that they won't disclose their secret sauce, otherwise everyone will copy it - patents or not. So, I think the patents and reference to the Scotch Yoke / Bourque engine are all a ruse - a red-herring - a canard - from what they're actually doing because the Scotch Yoke / Bourque engine has intractable issues with the sliding line contact at the crank journal. It is my speculation that they are working much more like something like the below. I showed a video by this creator before. He's been making a few new videos since that time making minor modifications and refinements since.
PS: For full disclosure, I have been working for a number of years separately on a type of sinusoidal mechanism engine, a new prechamber design, and a non-air-breathing engine (submitted a WPT patent application in 2020 for the last) but that's all I'm willing to disclose.
Edit: There's a funny line from the movie The Departed (2006) starring Jack Nicholson, Matt Damon and others that I think is fitting: "My theory on feds is that they're like mushrooms; Feed 'em sh!t and keep 'em in the dark."
Edited by TDIMeister, 21 November 2022 - 03:02.