- Northstar System
The Northstar System was
Cadillac 's trademarked name for a package ofautomobile performance features. Introduced in mid1992 on the1993 Cadillac Allanté and later on that year's Seville and Eldorado, the Northstar name continues in use to this day. "Northstar" is most associated with the advancedDOHC aluminumV8 Northstar engine.The Northstar System included the following components:
*GM Premium V engine :
** "L37" high-output 300 hp (224 kW) and 295 ft·lbf (400 N·m)
** "LD8" high-torque 275 hp (205 kW) and 300 ft·lbf (407 N·m)
* GM 4T80-E 4-speedautomatic transmission
* "Road Sensing Suspension": RSS was available in both standard and CV-RSS (continuously-variable) systems. It monitored damping rates of the shock absorbers every 15 milliseconds, selecting between two settings.
* 4-wheeldisc brake s with Boschantilock brakes
* "Magnasteer" speed-variablepower steering : Magnasteer combines conventional hydraulic power steering and magnetized "doughnuts" mounted around the output shaft, which stiffen the steering as vehicle speed increases.General Motors , the maker ofCadillac employed a continuously variable system for the Cadillac Northstar System, VVT (Variable Valve Timing ). The NorthStar VVT provides a continuously variable system throughout the RPM range. The overhead cam (OHC) Cadillac NorthStar, already a fuel efficient V-8 engine, became even more efficient with VVT. GM engines use the double overhead cam, varying both intake and exhaust for better performance.ee also
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Oldsmobile Aurora
*Variable Cam Timing
*Variable Valve Timing References
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