|The ML 450 two-mode gasoline-electric hybrid.|
Mercedes-Benz will showcase a range of hybrid solutions at the upcoming Frankfurt Motor Show, including the new F700 research car with a DiesOtto engine and hybrid drive, its first two-mode hybrid, and an S 300 BLUETEC hybrid along with others.
Mercedes is emphasizing a modular technology approach that includes optimized combustion engines and customized hybrid solutions, which are deployed individually or in combination depending on the vehicle class, application profile and customer requirements.
The F700 luxury sedan offers fuel consumption of 5.3 liters/100km (44 mpg US) and CO2 emissions of 127 g/km. The DiesOtto engine is a 1.8-liter, turbocharged, four-cylinder gasoline direct injection engine that supports a switch to controlled auto ignition (CAI) under certain operating conditions. (Earlier post.)
When starting and under full load, the fuel/air charge is ignited by a spark plug, as in a conventional spark-ignition (SI) engine. The switch to controlled auto ignition mode occurs under partial load conditions, i.e. at low and medium engine speeds.
Other models to be shown at Frankfurt include:
ML 450 Hybrid, due to be launched on the market in 2009 as a gasoline hybrid using the two-mode hybrid drive developed in partnership with GM and BMW. With a combined system output of 250 kW (340 hp) and a combined maximum torque of 480 Nm, the ML 450 Hybrid consumes 7.7 liters per 100 kilometers (30.5 mpg US)—equivalent to CO2 emissions of 185 g/km.
S 300 BLUETEC Hybrid. Combining a 4-cylinder diesel with a hybrid module, it develops a combined system output of 165 kW (224 hp) and a maximum torque of 560 Nm, a figure more reminiscent of a large-displacement V8 petrol unit. The luxury saloon consumes 5.4 litres of diesel per 100 kilometers (43.6 mpg US)—equivalent to 142 grams of CO2 per kilometer. This is around 30% less than the current consumption and emissions benchmark in the S-Class segment.
The S 300 BLUETEC Hybrid has the potential to meet Tier 2 Bin 5 standards in the US.
Various C-Class BLUETEC versions—with and without hybrid—which are due to be launched successively.
The Mercedes Car Group will also be presenting future hybrid solutions for smart models.