BEI’s proprietary 24 cu.in. Opposed-Piston Turbo Diesel Engine/APU has successfully demonstrated cold start, low idle, high idle and incremental loads nearing the target power output.  See it run at http://youtu.be/WJvEYzIgGYI. With a target of 20kW output, this technology has widespread potential due to its small size, flexible footprint, power-to-weight ratio, low part count, and fuel efficiency.  The single cylinder engine also provides a low compression ratio with low heat rejection, variable boost, high speed, good cold starting and multi-fuel capabilities.