Press Release
Quadra-Trac???????????????????? II
The Quadra-Trac???????????????????? II 4x4 system for 2005 Jeep Grand Cherokee gives the customer the benefit of the new NV245 active transfer case and BTCS.The transfer case is the same one used in the Quadra-Drive???????????????????? II system (see below). It uses input from a variety of sensors to determine tire slip at the earliest possible moment and takes corrective action. The system also uses Throttle Anticipate??????????????????????????????????????sensing quick movement in throttle from a stop??????????????????????????????????????and takes steps to maximize traction before tire slippage even occurs.
Torque is transferred to the individual wheels as needed by the BTCS to maintain traction in changing road conditions. When the system senses tire slip, it modulates brake pressure to the slipping wheel, which directs torque to the tires with the best traction.
Quadra-Trac II features an electronic shift mechanism for ease-of-use. The transfer case also includes a neutral position for trouble-free towing behind another vehicle.
Quadra-Drive???????????????????? II
The Quadra-Drive II Jeep 4x4 system gives customers the ultimate in off-road capability. It combines the NV245 full-time transfer case with Electronic Limited Slip Differentials (ELSD) for best-in-class tractive performance. The system instantly detects tire slip and smoothly distributes engine torque to the tires with traction. In some cases, the vehicle will even anticipate low traction and adjust to proactively limit or eliminate slip.The heart of the system is the NV245 active transfer case. This transfer case includes a center differential coupled with an electronically controlled clutch pack, varying from a completely open state to completely locked, with infinite possibilities in between. The 4-Low gear ratio is 2.72:1.
Quadra-Drive II features an electronic shift mechanism with a unique engagement switch. The lever is conveniently located on the shift console. Pulling the switch up engages 4-Low. The lever returns to a resting position after activation. The transfer case also includes a neutral position for trouble-free towing, such as behind a motor home.
A key component in the Quadra-Drive II system is the ELSD, the new benchmark for automatic traction differentials. The ELSD use electronically controlled clutch packs to automatically and instantly vary from slip to lock at each axle. This maximizes traction when needed without any of the on-road drawbacks normally associated with such a robust 4x4 system. The 2005 Grand Cherokee is the first vehicle in the industry with front and rear ELSD.
All components of the system work together, continually monitoring needs, to provide smooth and automatic application of the components for best-in-class tractive performance while improving the day-to-day on-road driving experience. For example, the ELSD releases the clutch packs in the front axle during turns to allow differentiation and prevent crow hop.
All-New Front Suspension and Steering Systems
An all-new short-long arm (SLA) front suspension provides excellent handling and ride characteristics while improving Jeep Grand Cherokee??????????????????????????????????????s off-road performance.Nodular iron, single-piece lower control arms feature an L-shaped geometry designed to provide higher ground clearance at the wheel than most IFS systems. Forged upper control arms provide strength and durability. Tall aluminum steering knuckles provide optimal steering and suspension geometry for excellent on-road handling and maneuverability. Coil-over shocks deliver high-performance control.
Front suspension travel is increased by almost 10 percent (more than one inch) compared to the 2004 Grand Cherokee, further improving the 2005 Grand Cherokee??????????????????????????????????????s off-road capability.
The advantages in using this uniquely designed front suspension include improved handling, reduced head toss, a savings of 100 pounds of unsprung mass for further improvement in ride quality, more precise steering and a lower center of gravity.
The 2005 Grand Cherokee rear suspension builds on the success of previous generation Jeep multi-link systems. Four tubular control arms combine with a tubular track bar for total rear-axle control. The shock absorbers are positioned more vertically than in past models for greater body control and reduced head toss.
The spring rates and shock dampening have been tuned to complement the front suspension for a highly balanced chassis.
Grand Cherokee??????????????????????????????????????s new rack and pinion steering system imparts a more precise steering feel than the former recirculating ball steering system.
Safety
The 2005 Jeep Grand Cherokee is among the first Chrysler Group vehicles to offer advanced multi-stage air bags with an occupant classification system for the front seat occupants. This system detects the size of an occupant based on weight and determines if there should be no deployment, low deployment or full deployment. (However, even with this advanced system designed to meet government requirements, the safest place for children is in a back seat.)Optional side-curtain air bags offer additional side-impact protection to the front and rear seat occupants. Seat belt and air bag systems work in conjunction with the state-of-the-art energy management features of the body structure and chassis.
Additionally, tire pressure monitoring is standard on all Grand Cherokees.
Interior Features
The 2005 Jeep Grand Cherokee can be equipped with a wide range of features and amenities that complement its well-conceived interior appointments. Among them are Auto-Dimming headlamps, UConnect???????????????????????????????? hands-free communication, SIRIUS???????????????????? Satellite Radio, remote rear glass, automatic windshield wipers, adjustable pedals and dual-zone heating, ventilation and air conditioning.New for this model year are:
- Rear-seat DVD entertainment center;
- Boston Acoustics six-speaker audio system with 276-watt DSP amplifer;
- Full-screen, color navigation system with integral AM/FM stereo radio with six-disc CD/MP3 player (REQ); and
- Eight-way driver and four-way power passenger seats with manual lumbar.
