|Dodge used a herd of 120 long horn cattle driven by 10 cowboys to unveil the all-new 2009 Dodge Ram during the truck’s world debut at the North American International Auto Show today.|
Chrysler LLC will apply the two-mode hybrid powertrain—developed in partnership with General Motors, Mercedes-Benz and The BMW Group—to the new Dodge Ram 1500 pickup in 2010. The Dodge Ram HEMI Hybrid joins the Chrysler Aspen and Dodge Durango in the planned Chrysler hybrid vehicle lineup.
Last year, the company also announced that it would introduce a Cummins turbodiesel engine after 2009 for the Dodge Ram 1500. The engine will meet Tier 2 Bin 5 50-state emissions standards, and will deliver a 30% fuel economy improvement over gasoline versions. The 2008 Ram 1500 2WD versions have combined fuel economy rating ranging from 14-17 mpg US.
The HEMI engine in the hybrid powertrain will continue to feature Chrysler’s Multi-displacement System (MDS), which allows the engine to alternate between four-cylinder mode when less power is needed and V-8 mode when more power is in demand.
The two-mode hybrid system provides assistance from electric motors allowing the HEMI V-8 to remain in four-cylinder mode more often than without a hybrid powertrain, improving overall fuel economy.
The two-mode full hybrid system offers low- and high-speed electric continuously variable transmission (ECVT) modes (“two-mode”) and four fixed-gear ratios for high efficiency and power-handling capabilities. During the two ECVT modes, the system can use the electric motors for acceleration, improving fuel economy, or for regenerative braking to utilize energy that would normally be lost during braking or deceleration. The energy is stored in the batteries for later use.
The hybrid system’s two modes are optimized for city and highway driving. In the first mode—at low speed and with light loads—the vehicle can operate in three ways: electric power only; engine power only ; and any combination of engine and electric power.
The second mode is used primarily at highway speeds. In addition to electric assist, the second mode provides full power from the 5.7-liter HEMI V-8 when conditions demand it, such as when passing, pulling a trailer or climbing a steep grade.
The Hybrid Development Center (General Motors, Chrysler, Mercedes-Benz and The BMW Group) jointly developed the overall modular two-mode hybrid system and the individual components used by the partners: electric motors, transmission, high-voltage battery, high-performance electronics, wiring, safety systems, energy management and hybrid-system control units. In addition, the Hybrid Development Center is responsible for system integration and project management.