Motiv Engines LLC has introduced the second generation of its ultra-efficient engine design, which the company intends to develop into a heavy-duty on-highway engine fueled by liquefied natural gas (LNG).
The new prototype, dubbed the MkII Clarke-Brayton Engine, is fueled by diesel, which Motiv says is a first step in proving the technology before developing a new LNG fuel system.
The company expects the engine to be up to twice as efficient as a conventional auto engine and up to 20% more efficient than modern diesel engines.
It splits the processes of an engine into three separate optimized spaces, allowing it to implement a more efficient cycle, achieve a 56:1 compression ratio and lose much less of its energy to heat than a conventional engine, Motiv explains.
