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Engine efficiencies highlight 2016 Cadillacs

Active Fuel Management and AutoStop for new CT6, ATS and CTS engines

Published: October 10, 2015, 5:00 AM
Updated: April 29, 2018, 1:35 PM

Cadillac Twin Turbo 3.0L V-6 engine

Once heralded as the top of the North American heap in its luxury, design and engineering, Cadillac is making another push to the summit with new fuel saving technologies and drivetrain hardware for its latest stable of stylish, performance-luxury cars.

2016 Cadillac CT6

New for 2016 is addition of Cadillac’s Active Fuel Management and AutoStop technologies for its turbocharged 3.0-litre V6. The engine for the new CT6 prestige sedan will become the world’s first six-cylinder engine to combine turbocharging, cylinder deactivation and stop/start technology.

The twin-turbo 400-hp V6 will deactivate two cylinders under certain light-load conditions (such as when cruising along the highway) and seamlessly bring those cylinders back on line for maximum power (such as when executing a quick pass of a transport truck on that same stretch of highway) as necessary.

The technology is also an integral part of the new 335-hp 3.6-litre V6 that debuts in the CT6, and will also be available to the mammoth Escalade SUV and ATS and CTS lines, as well as the 6.2-litre V8s in the Escalade and CTS-V sedan, in which four cylinders are deactivated under light loads.

Automatic stop/start technology is a technology that automatically shuts the engine down when the vehicle comes to a full stop under braking and quickly fires it back up when the brake pedal is released. The fuel-saving technology will be available in both the V6s as well as the turbo 2.0-litre four-cylinder engine that is used in the ATS, CTS and CT6.

The difference in the Cadillac system of automatically stopping and starting the engine is its use of ultracapacitors that enable voltage stabilization and take the strain off the car’s traditional battery system. It also reportedly provides smoother and quicker restarts of the engine.

All engines use an eight-speed transmission (new in the 2016 ATS and CTS) to put power to the driven wheels. Cadillac claims that the integration of the engine technologies with the eight-speed automatic translate into a six percent reduction in CO2 emissions in the 2016 ATS and CTS.

“While these new systems increase efficiency, a main focus in engineering at Cadillac is to integrate these systems smoothly with no compromise to the driving experience,” says David Leone, Cadillac executive chief engineer.