LiquidPiston’s rotary engine with 75 percent thermal efficiency

LiquidPiston, Inc (LP) develops compact, quiet, high-efficiency, low-vibration,multi-fuel capable combustion engines that are
scalable from 1HP to over 1000 HP. LiquidPiston’s X Engine is a non-Wankel rotary embodiment of the company’s innovative High Efficiency Hybrid Cycle (HEHC).