Honda EXP-2 [SEP] start time
Honda EXP-2
The Honda EXP-2 was an off-road experimental prototype motorcycle, designed in 1995, with a fuel injected two-stroke engine. It was intended to serve global markets that still relied heavily on two-stroke technology, but to comply with increasingly strict emissions laws. 
Technology.
With the utilization of a redesigned exhaust port valve and the ARC (Advanced Radical Combustion) system engaged, the engine would produce a pre-ignited combustion effect at low throttle that would completely burn all fuel in the chamber
compared to how a conventional two-stroke engine would lose part of the intake charge. The result decreased two major drawbacks of two-stroke technology of both incomplete combustion of fuel at low engine revolutions (RPM) and expulsion of unburned fuel at high RPM.
External links.
- Honda EXP-2 at the Honda Collection Hall Japan