Lotus geeft je meer pk’s en minder uitstoot

Lotus maakt niet alleen kleine, snelle en lichte sportwagentjes. Ze werken namelijk ook aan technieken om de auto’s van de toekomst een stuk zuiniger en efficiënter te maken. Bijkomend voordeel is dat dezelfde techniek ook nog eens extra power oplevert.

Voor dit project heeft Lotus samengewerkt met Continental Automotive. Om de techniek te demonstreren heeft Lotus een Opel Astra genomen. Door 1,8-liter motor is vervangen door een door Lotus ontworpen 1,5-liter motor. Die motor beschikt over een nieuw injectiesysteem, een brandstofpomp met hogere druk, een variabele nokkenas voor betere timing en een nieuw uitlaatsysteem. Het resultaat is 15% minder CO2-uitstoot en 20 pk extra.

De techniek kan volgens Lotus in de hele industrie doorgevoerd worden. Audi hoeft zich dus geen zorgen te maken. Hierdoor zal de uitstoot flink afnemen en kunnen de fabrikanten makkelijker aan de eisen voor de gemiddelde uitstoot voldoen. Lotus heeft zelf met dit systeem in combinatie met de kleine, lichte auto’s die ze maken een goede oplossing voor de nabije toekomst in handen. Dat is dus schoner rijden zonder aan vermogen in te leveren.

Low CO2 with high performance is affordable and available
240Nm, 160ps and 15% CO2 Reduction

Lotus Engineering, the automotive consultancy division of Lotus, and Continental Division Powertrain have presented the results of their “Low CO2” research collaboration. The Low CO2 vehicle concept is being proposed as a practical option for manufacturers to reduce their fleet average CO2 emissions.

The Low CO2 vehicle concept is demonstrated in an Opel Astra and uses a Lotus Engineering-designed pressure-charged three-cylinder 1.5-litre gasoline engine integrated with a number of Lotus and Continental technologies. It features an innovative integrated exhaust manifold design, centrally-mounted injectors, cam profile switching for lift and timing, a high pressure fuel pump, and a mild hybrid drive. The Low CO2 Astra produces a g/km CO2 reduction of 15% against the naturally aspirated 1.8 litre 4 cylinder engine version of the same vehicle. While forging comparisons to the most frugal B-segment cars, the Low CO2 Astra – on the NEDC (New European Driving Cycle) – produces performance figures that are comparable to market leading C-segment cars with larger engines.

The primary objective of the Low CO2 project was to deliver greatly reduced CO2 emissions while maintaining an engaging driving experience from an affordable set of technologies. The solution employs a cleverly integrated set of powertrain systems within a downsized overall package.

The collaboration concluded in early February with the completion of extensive dynamometer and road testing at Continental’s facility in Toulouse, France and Lotus Engineering’s Hethel Headquarters in the UK. The programme was grant-aided through the UK’s Energy Saving Trust’s Low Carbon R&D Programme funded by the UK Government’s Department for Transport.

Mike Kimberley, Chief Executive Officer of Group Lotus plc, said: “Through intelligent integration of a range of proven and newly available technologies, we have delivered a car that engages and excites the keen motorist with the superb power and torque figures and crucially has a lower impact on the environment. The most important part of this project is that the solution is a combination of technologies that are available and can be implemented in next generation models and with further work beyond the scope of this initial project, dramatic reductions in CO2 can theoretically be achieved.

He continued: “I am very pleased with what has been achieved in this project. Lotus Engineering is leading the industry across a number of advanced green powertrain technologies, including electric vehicles, hybrids, bio-fuels and developing more efficient gasoline and diesel engines. We believe a crucial factor in the adoption of green cars in the future will be ensuring they remain fun to drive. This Low CO2 collaboration with Continental Division Powertrain proves that objective has been reached.”

Dr. Hans Nuglisch, Senior Manager of this Low CO2 project at Continental Division Powertrain, said: “The cooperation with our partner, Lotus Engineering, has shown once again, that there is still an enormous potential for additional innovation within the internal combustion engine. Obviously electronics and mechatronics are making vehicles more economical without compromising driving fun. Additionally turbo charging combined with direct injection means noticeably better fuel economy and lower CO2 emissions for the gasoline engine. With our advanced expertise in low CO2 know how, we provide clear benefits for our customers and will further strengthen and improve our role as systems integration experts.” Transport Minister Jim Fitzpatrick said, “I am determined that transport should play its part in tackling climate change, so it is essential that our strategy focuses on driving forward new technologies to make engines greener. This engine is one of the more environmentally-friendly petrol engines around, raising the standard for others to meet. I am pleased the Government was able to support this project through the Low Carbon Research and Development programme and look forward to the day when this type of technology becomes commonplace on our roads”

“With over 20% of the UK’s total carbon emissions produced by road transport every year, technological advances in this area are vital,” explains Philip Sellwood, Chief Executive of the Energy Saving Trust, which is managing the initiative. “This project is an exciting opportunity for innovative technologies to be developed and showcased.”

Lotus brought to the project its world-class powertrain design, development, testing and validation capabilities, with specific expertise in engine downsizing and systems integration. Continental Division Powertrain supplied its extensive experience in powertrain management and control systems, especially in the areas of direct fuel injection systems, hybrid drives, energy management, emission after-treatment and a number of new technologies.