Cadillac Escalade Hybrid
The 2009 Cadillac Escalade Hybrid is the world’s first fuel-saving hybrid applied to a large luxury SUV, delivering a 50-percent fuel economy improvement in city driving. It is powered by GM’s innovative, fuel-saving two-mode hybrid system and offers the same dramatic design, luxury and full-size capability that have made the Escalade an icon.
Escalade Hybrid is available in 2WD and 4WD configurations. The Escalade’s two-mode hybrid system allows it to return exceptional fuel economy in both city and highway while delivering the capabilities of a true luxury SUV. In city driving, this advanced hybrid power system enables Escalade to launch and drive low speeds on electricity alone. As additional power is demanded, the system blends output from the battery and gas engine smoothly.
GM’s patented two-mode hybrid system consists of an advanced electrically variable transmission (EVT) and 300-volt nickel-metal hydride Energy Storage System (ESS). These systems work in concert with the standard 6.0L V-8 Gen IV gasoline engine with Active Fuel Management (AFM) and late-intake valve closing (LIVC) technology. AFM enables the V-8 engine to seamlessly shut off half of its cylinders when less power is needed, such as during highway cruising. This new hybrid system not only enables the Escalade Hybrid to drive low speeds on electricity alone, it also allows the 6.0L V-8 engine to operate in its more economical four-cylinder mode for longer periods.
A key contributor to the Escalade Hybrid’s fuel economy is the gasoline engine’s Auto Stop mode. Once the vehicle reaches 0 mph, the gasoline engine is automatically shut down. However, when extra power is required, such as for wide-open-throttle acceleration from a standing stop, the Vortec 6.0L V-8 is seamlessly restarted so it can deliver the necessary power and torque.
Source: Cadillac press