Low Emission Optical engine LEO

The Leo engine is build up from the Sisu Diesel 6-cylinder engine. Only one cylinder is in use and its cylinder liner is extended by the part that has windows made from quartz glass. The engine is rotated by the electric motor controlled by the frequency converter. The compressed air is taken from the compressor of the EVE engine.

Specs of the LEO engine:

Base engine Sisu 84 CTA
Rotating speed (600) 1000-1400 rpm
Max cylinder pressure 120 bar
Compression ratio 14:1
Lifting of the cylinder head 70 mm, height of the windows 60 mm
Boost pressure 0-3 bar
Original lubricatin system with heating
Modified cooling system with heating and cooling

General assembly of the LEO engine.

Lifting of the cylinder head.

Quartz glass ring used as windows.

Research areas

Financing and industrial partners

The engine project has mainly funded by 240.000 euros award of the The Federation of Finnish Technology Industries 100 Years Foundation for emission free combustion development. Other funding partners:

TEKES (Finnish Funding Agency for Technology and Innovation)

The following industrial partners have supported the engine project in the form of consulting, material deliveries or otherwise