In some circles, it's a little-known fact that Lotus isn't just a builder of tiny, fast cars that try to out-handle military aircraft on Top Gear. Though the UK-based company got their reputation for building lightweight performance cars, the automaker is also involved in several environmentally-friendly engineering initiatives as well.
One of the latest is a research engine that's intended to help Lotus engineers study the fuel-efficiency potential of alcohol-based fuels. Lotus says that their engine concept, dubbed 'Omnivore', shows the potential for significantly increased thermal efficiency when fuelled on any alcohol-based fuel or gasoline.The interesting engine is a direct-injected two-stroke unit that has the head and cylinders cast into the same block - eliminating the need for a head gasket and thus saving weight. A charge-trapping valve allows for asymmetric timing of exhaust flow and variation of the exhaust opening point, too. There's even a variable compression-ratio system that alters the geometric compression of the engine, depending on load.Mike Kimberley, Chief Executive Officer of Group Lotus plc said: "We are delighted to unveil this major milestone in the development of an engine configuration for a new breed of more efficient multi-fuel engines. The automotive sector is focusing on its environmental obligations to improve efficiency, minimize reliance on fossil fuels and reduce harmful
emissions and Lotus continues to be an industry leader through our work on all aspects of future fuels. Sustainable alcohol based fuels have the potential to reduce the overall
CO2 footprint of internal combustion engines towards zero and for this reason, need to be embraced as future fuels for road transport."The
Omnivore engine project includes collaboration between Lotus and Queen's University Belfast and Orbital Corporation Limited Australia. Those attending the Geneva Motor Show can check it out in person from March 5 to 15.
photo: Lotus