Mercedes-Benz ML450 alternatives
Latest model: Mercedes-Benz ML450 Hybrid 2010
In the search for the optimum hybrid system for the Mercedes-Benz ML450 Hybrid, the developers were already sure of one thing right from the concept phase: a Mercedes-Benz SUV with a hybrid drive would have to share the same typical make attributes as any other Mercedes car. Essential components such as the greatest possible active and passive security, optimum ride convenience and ease of operation, uncompromising reliability over a long period and luxury workmanship with select materials would have to be on a par with a comparable, conventionally powered standard-production car. And all combined with the greatest possible efficiency. At the same time, the drive system should be testimony to the company's high-tech strength and cutting-edge technology. These goals demanded a full development cycle - the kind of workflow any new model family designed from scratch would undergo. Until the Mercedes-Benz ML450 Hybrid reached series-production maturity, the developers and technicians clocked up a total of four million kilometres, taking in some of the world's most extreme climatic conditions to prove the system's reliability, be it in the sub-zero Arctic circle, the searing heat of arid desert regions or in the sweltering, humid temperatures of the tropics. The work was supplemented by an extensive test-rig programme and detailed simulations as part of the Digital Prototype. An hight-priority objective during development was to optimally match the different subsystems within the powertrain. System matching allows the different drive modes to be easily used while the buyer is driving.
Mercedes-Benz ML450 comparison:
Mercedes-Benz ML450 details:
The two-mode hybrid technology in the Mercedes-Benz ML450 Hybrid, whose drive architecture supports purely electric operation and purely combustion motor operation or any mix of the two, takes its lead from the fundamental work undertaken by the Global Hybrid Cooperation. This group brought together research and development work undertaken by the companies Daimler AG, BMW Group, Basic Motors and Chrysler.
due to two-mode hybrid technology the Mercedes-Benz ML450 Hybrid boasts tangible benefits: its performance figures are on a par with a traditional eight-cylinder SUV with permanent all-wheel drive while fuel consumption and emissions have been reduced by up to 60%. The car developed specifically for the US sphere provides 'city' fuel consumption of 21 mpg and 'highway' consumption of 24 mpg, making it the most efficient car in its segment. With its SULEV (super Ultra Low Emission Vehicle) classification, the SUV meets the most stringent emissions traditional for cars with a combustion motor currently applicable in the US. At the same time, the Mercedes-Benz ML450 Hybrid with a system output of 250 Kw (340 hp) and a combined torque of 517 newton metres guarantees a superlative driving experience combined with an improved level of ride convenience. The driver can concentrate fully on the traffic and enjoy the Mercedes-Benz ML450 Hybrid driving experience without having to select add-on functions as the drive management system is fully automatic. The functionality of the 4MATIC permanent all-wheel drive system is also fully retained.
At the heart of the two-mode hybrid drive is the transmission unit with two compact electric motors, three planetary gear sets and four clutches. This customization allows the performance to be split into an electrical and a mechanical path. Traditional one-mode hybrid systems tend not to have mechanical ratios. As such, this kind of system transfers the bulk of the performance via the electrical path with high electrical output and hence lower efficiency. It operates efficiently principally at lower loads and speeds. If performance also needs to be transferred at higher loads and speeds, an accordingly larger electric motor would be required. Having to performance and find room for this motor would only be possible at the expense of efficiency. In response to increasing motor loads and higher speeds, two-mode technology, by contrast, variably shifts the performance transfer from the electrical path to the mechanical drive path. As a result, the system is much more efficient in all situations, both in inner-city stop-and-go traffic as well as on quickly motorway journeys, while also enabling smaller electric motors to be used. The efficiency boost - both in urban traffic as well as on motorway journeys - is therefore where two-mode technology gets its name from.