Automotive Intelligence - the web for automotive professionals and car enthusiasts
August 29, 2007
These include alternative fuel vehicles, ongoing improvements to conventional internal combustion engines and transmissions, hybrid-electric and electric vehicles, as well as hydrogen fuel cell vehicles.
Corsa 1.3 CDTI ecoFLEX signals the start
At the IAA in Frankfurt, Opel begins the current phase of its long-term ecoFLEX environmental strategy. This includes offering an especially low carbon dioxide-emitting ecoFLEX variant in each high-volume model line. ecoFLEX versions combine low consumption and emissions with excellent economy and driving fun. The first car in this range is the Corsa 1.3 CDTI ecoFLEX, which only produces 119 grams of CO2 per kilometer and consumes an average of just 4.5 liters of diesel per 100 kilometers.
These excellent figures are a result of the world’s smallest four-cylinder common-rail turbo-diesel engine. The 1.3 CDTI ECOTEC was named “Engine of the Year” in the 1.0 to 1.4-liter displacement class in 2004 by automotive journalists from 26 countries because of its refinement, responsiveness and superb economy.
Optimization of the engine map helps the four-cylinder unit achieve an average consumption reduction. High-level fuel management is ensured by the up to five, 1400-bar fuel injection processes per cycle that create an extremely fine fuel atomization in the combustion chambers, which have a total displacement of 1248 cm3. The maximum torque of 170 Nm is available from 1750 - 2500 rpm and maximum output of 55 kW/75 hp at 4000 rpm. The Corsa ecoFLEX with additionally longer axle-drive ratio has a top speed of 163 km/h and accelerates from zero to 100 km/h in 14.5 seconds. This extremely economical engine predestines the Corsa, highly versatile Meriva and spacious Astra five-door model to be ecoFLEX variants.
Natural gas propulsion with monovalentplus concept qualifies for ecoFLEX league
Opel’s natural gas-powered ecoFLEX vehicles also boast impressive environmental qualities. The Zafira and Combo CNG (Compressed Natural Gas) produce almost no soot particles, 20 percent less carbon dioxide than a comparable gasoline model and an up to 80 percent reduction in other harmful emissions. The two CNG variants’ unrivaled low operating costs also qualify them for the ecoFLEX league. The 69 kW/94 hp 1.6-liter engine obtains the most from its fuel, regardless of whether it runs on natural gas, biogas or any mixture of the two. A 14-liter reserve gasoline tank ensures continued mobility on routes without a natural gas filling station. Thanks to economical consumption and ample natural gas tank capacities, a total operating range of over 500 kilometers is available.
The natural gas vehicles’ excellent efficiency and unrestricted everyday suitability is ensured by the innovative monovalentplus concept. This concept made Opel the first automaker to successfully optimize an engine for natural gas operation and still enable the use of conventional gasoline. The unit has special pistons, valves and valve-seat inserts, as well as separate injection banks for natural gas and gasoline.
August 24, 2007