Lotus Engineering and Siemens VDO are collaborating on a research and development program to reduce the CO2 emissions of future gasoline vehicles. In advance of the full unveiling of the Low CO2 engine in a demonstrator vehicle towards the end of the year, the final cylinder head design with a number of integrated technologies will be featured at the Siemens VDO exhibit at the IAA International Motor Show in Frankfurt in September.
The Low CO2 exhibit will showcase key features from a newly-designed 1.5-liter, pressure charged, three-cylinder downsized hybrid engine. The display will include Lotus’ integrated exhaust manifold design and its cam profile switching system, and will also feature Siemens VDO’s new high pressure fuel pump and centrally-mounted gasoline injectors.
The primary objectives of the Low CO2 project are to deliver greatly reduced emissions while maintaining an engaging driving experience from an affordable set of technologies. The solution employs an integrated set of powertrain systems within a low mass, downsized overall package.
Ultimately, the technology and know-how will be used by both partners to support vehicle manufacturers’ efforts to reduce fleet average CO2 emissions in next generation products.
Lotus Engineering is contributing its powertrain design, downsizing and systems integration expertise along with a number of advanced technologies. Siemens VDO is supplying its experience in powertrain management and control systems and a number of new technologies.
Earlier this year, Lotus Engineering is unveiled the ‘EVE Hybrid’ (Efficient, Viable, Environmental) technology demonstrator at the 77th Geneva International Motor Show. Developed for, and in close R & D engineering cooperation with its shareholder Malaysian automaker Proton Holdings Bhd, it showcases how OEMs can introduce lower-emissions variants to existing model ranges that currently only offer conventional gasoline and diesel powertrains. (Earlier post.)
The hybrid development team at Siemens VDO in 2006 unveiled a full hybrid vehicle as a demonstration of its Hybrid Tool Box—a portfolio of hybrid components including high- and low-voltage motor inverters, electric motors and vehicle control algorithms and integration capabilities.
Simulations on the prototype—based on a Mercedes C230 K Sport Coupé show improvements in fuel economy of 30% to 38%, depending on driving strategy. The hybrid functionality includes stop/start, regenerative braking, pure electric drive, gear shifting optimized to electric drive and regeneration and operating mode shift. (Earlier post.)