Showing posts with label 4.6 twin turbocharged V-6 Cadillac. Show all posts
Showing posts with label 4.6 twin turbocharged V-6 Cadillac. Show all posts

Saturday, July 27, 2013

Cadillac's Turbo Technology

Where is Cadillac Today?                        


Cadillac has been a leading luxury auto brand since 1902. Today Cadillac is growing globally, driven by an expanding product portfolio featuring dramatic design and technology. More information on Cadillac appears at www.cadillac.com. Cadillac's media website with information, images and video can be found at media.cadillac.com.


 

No More Turbo Lag

Turbocharging increases power and performance with efficiency, but the delay in the delivery of power – known as “turbo lag” – has historically been its key limitation.

That’s about to change.

Cadillac’s first-ever Twin-Turbo, available on the 2014 CTS Vsport midsize luxury sedan and XTS Vsport full-size luxury sedan in the U.S. this fall, kicks turbo lag to the curb with a unique combination of smaller turbochargers, top-mounted throttle body and shorter air pathways.

The Cadillac Twin-Turbo V-6’s patented air flow design, which eliminates circuitous heat-exchanger tubing, makes the most of engine packaging efficiency to improve torque response time over other air flow designs.



Rated at 420 horsepower on the all-new 2014 CTS Vsport and paired with Cadillac’s first eight-speed transmission, the Twin Turbo is one of the most power-dense engines in the midsize luxury sedan segment, rated at an SAE-certified 420 horsepower and 430 lb.-ft. of torque.

Air flow routing volume is reduced by more than 60 percent when compared with a conventional design that features a chassis-mounted heat exchanger. The water-to-air cooler system achieves more than 80 percent cooling efficiency with only about 1 psi flow restriction at peak power for fast torque production.

“By creating a very short path from the turbos to the throttle body, the compressors are able to draw air directly from the inlet box and send pressurized air through the intercooler immediately,” said Richard Bartlett, Cadillac assistant chief engineer for the 3.6L engine. “This gives the driver a more immediate feeling of power on demand.”

Using two smaller turbochargers rather than a single larger turbo also helps ensure immediate performance because smaller turbochargers spool up quicker to generate horsepower-building air pressure that is fed into the engine. An integrated charge air cooling system also contributes because the compressors blow through very short pipes up to the intercooler.

The single centrally located throttle body atop the engine controls the air charge from a pair of turbochargers after the temperature is reduced in the intercooler. This design fosters more immediate torque response and reduces complexity by eliminating the need for a pair of throttle bodies.

Together smaller turbochargers, top-mounted throttle body and shorter air pathways help sustain peak torque over a broad range – 1,900 to 5,600 rpm – for a confident feeling of power in almost all driving conditions, such as accelerating or overtaking traffic on the highway.

“The Cadillac Twin-Turbo intercooler design builds on our experience with the 6.2L supercharged engine used on the current CTS-V Series,” Bartlett said. “That means more performance for drivers without sacrificing efficiency.”






Wednesday, March 27, 2013

THE SLICK NEW 2014 CADILLAC CTS



This is a look at the all new 2014 Cadillac CTS. This slick new looking Cadillac will be receiving Cadillacs new impressive, efficient 3.6 V-6, 420 hp twin turbocharged motor. With New York's International Auto Show on it's way it's sure to be just one of many new and impressive looks for the new year.

Monday, March 18, 2013

A Twin Turbo 420 hp V-6 Cadillac Motor for the CTS/XTS



That's right, Cadillac is at it again.  This time with a V-6 3.6 liter twin turbocharged motor. This bad boy is the first 420 hp V-6 that General Motors has ever produced for production.  The powerful V-6 will be backed up against a eight-speed automatic transmission designed to help with an already pretty fuel efficient motor. This combination along with 430 foot-pounds of torque will be able to lead a Cadillac to a quick 0-60 mph time in 4.6 seconds and is capable of reaching 170 mph.



The 2014 CTS/XTS are both expected to receive the motor, the XTS was supposed to receive a V-8, but Cadillac announced due to the great success of the twin-turbo V-6, the XTS will not be receiving the V-8 treatment.



Not to much is leaked about the new Cadillac engine, but here are some things that we do know about it:

  • All-new cylinder block casting
  • All-new cylinder head castings
  • Strengthened connecting rods
  • Machined, domed aluminum pistons with top steel ring carrier for greater strength
  • 10.2:1 compression ratio
  • Patented, integrated charge air cooler system with low-volume air ducts
  • Two turbochargers produce more than 12 pounds of boost (80 kPa)
  • Vacuum-actuated wastegates with electronic control valves
  • All-new direct injection fuel system
  • Tuned air inlet and outlet resonators, aluminum cam covers and other features that contribute to exceptional quietness and smoothness.
Combining luxury and power, Cadillac adds one more awesome piece of equipment to their already powerful arsenal.