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Introduction
Seville History
Specifications
Pictures
Northstar Engine
Transmission
Other Systems
Corsa Exhaust






















Other Systems


Brakes The Seville STS features Cadillacís sophisticated anti-lock braking system (ABS) designed by Bosch. The ABS computer continuously monitors information received from speed sensors, located at each wheel. Front wheels are monitored and controlled independently, while rear wheels are dual-monitored to provide a braking system which minimizes loss of braking capability in severe braking conditions. Simultaneously, the design of the Bosch ABS system maximizes lateral stability in severe brake applications. The systemís highly advanced technological design is capable of making brake pressure adjustments as traction needs demand - essentially "pumping" the brakes up to 15 times per second. This is, of course, much more rapid and precise than is humanly possible for the driver to accomplish. Through continuous monitoring via the wheel speed sensors, ABS controls tire slip, deters wheel lock-up, and works to maintain the maximum possible braking force between the tire and the road surface. The front brakes of the STS have also been extensively revised for 1997, providing improved stopping performance, improved braking response and a better pedal feel. Front brake discs are now 11.9 inches in diameter, about 1 inch larger than in 1996, which provides additional stopping power with improved better fade resistance during repeated stops from higher speeds. StabiliTrak Cadillac introduces yet another breakthrough in safety technology with the introduction of StabiliTrak - Integrated Chassis Control System (ICCS) with Stability Enhancement and Road Texture Detection - as standard equipment on the 1997 Seville STS. StabiliTrak is designed to make vehicle handling more predictable and consistent under all driving conditions on all road surfaces. This exclusive chassis technology also improves Anti-Lock Braking System (ABS) performance on rough or bumpy roads. The StabiliTrak system incorporates two new features into the Integrated Chassis Control System: Stability Enhancement and Road Texture Detection. StabiliTrak utilizes precise application of the vehicle brakes to assist the driver in maintaining control of the vehicle during cornering, lane changes and other maneuvers. StabiliTrak improves stability of the vehicle by comparing how much the driver is turning the steering wheel with how well the vehicle is responding to this input. If the system determines that the vehicle is not responding appropriately to the driverís steering input, the system precisely applies individual front brakes to slow the vehicle and bring it back to its intended path. The inherent stability of Cadillacís front-wheel-drive design allows effective enhancement of the vehicles stability by use of just the front brakes. StabiliTrak is made possible by simple, yet sophisticated, hardware and powerful software. The driverís intentions are precisely measured by a digital steering angle sensor, which measures steering angle to a resolution of one degree. The yaw of the car body - the rate at which it is actually turning - is measured by a solid state yaw rate sensor, which converts the turning motion of the body into a computer-readable signal. A lateral accelerometer helps the computer determine whether available traction has been exceeded. This allows the computer to fine tune corrections to match the cornering speeds and available traction. The same computer that operates the ABS and Traction Control system also controls StabiliTrak. StabiliTrak automatically assists the driver anytime the vehicle senses loss of control during acceleration, braking or turning maneuvers. The result of StabiliTrak is that the vehicle seems to respond almost intuitively to the needs of the driver, no matter how demanding the conditions and situation. StabiliTrak also features Road Texture Detection, a system that increases the effectiveness of the Anti-Lock Braking System by measuring the roughness of the road and adjusting brake operation accordingly. When braking on bumpy roads, the movements of the wheels over the bumps can reduce traction to the point where the wheels start to prematurely lock. The ABS controller interprets these changes in wheel speed as the beginnings of a skid and activates the ABS. Using information from the wheel position sensors of the Continuously Variable Road Sensing Suspension (CV-RSS), Road Texture Detection can instantly measure how rough the road is and adjust braking operation accordingly. Information from the wheel position sensors is processed by the digital signal processor in the CV-RSS controller, which classifies the road as smooth, rough, coarse or harsh. This information is used by the ABS/Traction Control computer to modify operation of the ABS. The result is increased effectiveness of the ABS, with shorter, more consistent stopping distances on rough roads. Road Texture Detection will also increase customer satisfaction by reducing unnecessary ABS enactment. StabiliTrak, another in a long line of technologically advanced safety features, is designed with owner safety in mind. Suspension The Seville STS features Cadillacís advanced Continuously Variable Road Sensing Suspension (CV-RSS) which replaces conventional shocks with four fast-acting computer-controlled dampers. These dampers feature a continuously variable damper valve, which can switch from limousine soft to race-car firm in the time it takes the car to travel just a few feet at highway speed. CV-RSS allows the car to ride softly during normal driving, while providing firmer suspension control on rougher roads and during emergency maneuvers. CV-RSS can fine tune damping rates for any road surface or driving condition, offering the optimal ride and handling balance for any condition. Traction Control A Full-Range Traction Control System works in tandem with Cadillacís Anti-Lock Braking System to deliver an even greater degree of driving safety to Cadillac customers. The two systems operate in perfect unison to control tire slip and inhibit wheel lock-up during braking applications. The technologically advanced Traction Control System regulates tire/wheel spin at most driving speeds and road conditions during acceleration. Magnasteer Whether highway driving or maneuvering into tight parking spaces, MagnasteerTM provides a smooth transition from one level of effort to another - for improved highway feel, stability, maneuverability, comfort and safety. The implementation of magnetic speed variable-assist power steering achieves a superior steering system, one that is acutely keyed to vehicle-speed conditions. A unique ombination of hydraulics, electronics and magnetics comprises the system, which is engineered to provide continuous speed-sensitive, variable-effort power steering. Enhanced Structure The Seville STS benefits from major structural enhancements for 1997. Using sophisticated computer analysis and other high tech tools, Cadillac engineers identified dozens of areas where the body structure of Cadillacís front-wheel-drive models could be enhanced. The engineers then redesigned key components and added new parts in strategic locations to significantly improve the stiffness of the body structure. Benefits include: a more secure and substantial feel, a quieter vehicle (noise, vibration and harshness from the road, powertrain and other inputs are easier to isolate) and improved durability (by reducing flex and vibration that tends to loosen fasteners, causing squeaks and rattles).

hollywoodbix@sympatico.ca