Cadillac SRX 2012 – Escorting 2012 Cadillac has updated the SRX with a new standard engine, General Motors‘ 3.6-liter direct-injected V6. This power plant will serve as the only available engine on the SRX here in the United States, replacing both the base 3.0-liter V6 and 2.8-liter turbocharged V6 It enhances a combination of performance, technology and refinement that is resonating with more luxury crossover customers. From a single block of steel, the Cadillac SRX stands deliberately apart in world of look-alike crossovers. From its chiseled silhouette to its vertical LED taillamps, the design is pure Cadillac.
Cadillac SRX also brings enhanced features, as well as updates that make it quieter and more refined – including new sound-absorbing material placed strategically throughout the vehicle. The Base and Sport suspension systems have been revised to improve the ride quality.
The 2012 SRX, the 3.6-liter mill produces 300 horsepower and 260 pound-feet of torque – increases of 35 hp and 37 lb-ft over the anemic 3.0-liter engine that served as the base engine. The new V6 offers the same amount of horsepower as the discontinued 2.8-liter turbocharged unit, event it’s lower on torque by 35 lb-ft.
The engine is paired with the Hydra-Matic 6T70 electronically controlled six-speed automatic transmission, with tap up/tap down driver control. A wide overall ratio spread of 6.04:1 allows a “steep” first gear, overdrive top gear for low-rpm highway cruising. The economic fuel is a maximum acceleration. Engine noise is also lower during cruising. Because of the wide ratio spread (6.04:1), first gear is a very high ratio, which provides brisk acceleration from a stop. Sixth, however, is an overdrive ratio, which keeps the engine revolutions as low as possible for highway cruising, reducing engine friction losses and improving fuel economy.
Cadillac SRX is also offered with an all-wheel-drive system that incorporates an electronic limited-slip (eLSD) rear differential. It not only improves traction in slippery road conditions, but it provides side-to-side torque transfer along the rear axle to enhance control during hard cornering. It was developed in partnership with Haldex, a leader in all-wheel-drive technology and the eLSD enables the AWD system to distribute torque from the front to rear axle, and also side-to-side, across the rear axle, sending power to the wheel with the greatest traction.
Features and contents
- Improved voice recognition for phone activation, navigation and radio station changes
- Standard Bluetooth phone connectivity on all models, with on-screen caller identification
- OnStar Turn-by-Turn automated directions are loaded to the vehicle
- Door lock switches on the driver and passenger door panels as well as the center console
- Cruise control buttons on the steering wheel
- Memory seat set – the occupant can set the seating position simply by pressing “set” and the number simultaneously
- One new exterior color: Xenon Blue Metallic.
Cadillac SRX provides a heated steering wheel on the luxury, performance and premium collections. Also a new machined-face finish on the 20-inch wheels, which are standard on Performance and Premium Collections. Back-lighting for map lights in the overhead console.
The Cadillac SRX’s new LFX 3.6L direct-injected V-6 delivers an SAE-certified 308 horsepower (230 kW) and 265 lb.-ft. of torque (359 Nm), with efficiency-enhancing features including direct injection and continuously variable valve timing. Peak torque is achieved at only 2,400 rpm and is maintained through 5,300 rpm. The LFX is also E85 ethanol-capable.
Supporting elements that contribute the SRX engine performance are a composite intake manifold saves approximately 5.5 pounds (2.5 kg) over the weight of a comparable aluminum intake. It also has a comparatively small radiated surface area to help it maintain excellent noise and vibration characteristics. Also an integrated cylinder head/exhaust manifold design saves approximately 13 pounds (6 kg) per engine when compared with a comparable engine with separate head/manifold assemblies.
The cylinder block and cylinder heads are cast in aluminum for low weight. It heads include four valves per cylinder, with a dual overhead camshaft design incorporating infinitely variable cam phasing. Pressure-actuated oil squirters drench the underside of each piston and the surrounding cylinder wall with an extra layer of cooling, friction-reducing oil.A cast
Aluminum oil pan is stiffer to improve powertrain rigidity and reduce vehicle vibration. It bolts to the transmission bell housing as well as the engine block, eliminating points of vibration. Cast aluminum dampens internal engine noise better than a conventional stamped steel pan and is structurally stiffer. Optimized-flow fuel injectors and the integrated exhaust manifolds/cylinder heads promote lower emissions.
The pistons are made of lightweight cast aluminum and feature a friction-reducing polymer coating on the skirts , as well as fully floating wrist pins, which also help reduce friction. Less weight in the pistons means less reciprocating mass in the engine, which in turn means less inertia and greater operating efficiency.
To help achieve their performance goals, the Cadillac SRX’s engineers redesigned the exhaust system with dual runners from the engine to a collection point farther rearward in the vehicle. The diameter and length of the pipes were specifically tuned to improve low-end torque from 1,200 to 3,000 rpm.
A driver-selectable Eco feature alters the shift points of the 6T70 to enhance fuel economy by up to 1 mpg. A clutch was added to the variable displacement air conditioning compressor to enhance fuel economy. The compressor is only run when needed and provides no drag when turned off.
Also improved for 2012 the Sport active suspension – standard on Performance and Premium Collections – with new front upper strut mounts, new shock valving, bonded stabilizer bar bushings and revised calibrations for this continuously variable real-time damping suspension system. Electronically controlled dampers at each corner “read” the road constantly to make real-time adjustments within milliseconds. They deliver the just-right damper rate for all road conditions, for greater comfort and a greater feeling of control. This system also increases damping during aggressive handling maneuvers to reduce the roll velocity and pitch velocity of the vehicle for a more confident feel.
The 2012 Cadillac SRX Cadillac—it looks and performs like no other luxury crossover.
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