Does the Cadillac CT5 have cylinder deactivation technology?
3 Answers
Cadillac CT5 is equipped with cylinder deactivation technology, which can significantly improve fuel efficiency under suitable conditions. Taking the 2021 Cadillac CT5 as an example, it belongs to the mid-size sedan category with the following dimensions: length 4924mm, width 1883mm, height 1453mm, wheelbase 2947mm, fuel tank capacity 66 liters, and curb weight 1640kg. The 2021 Cadillac CT5 features a MacPherson strut front suspension and a multi-link independent rear suspension. It is powered by a 2.0L turbocharged engine delivering 237 horsepower (237PS), with a maximum power output of 174kW and peak torque of 350Nm, paired with a 10-speed automatic transmission.
I previously drove a Cadillac CT5, which indeed features cylinder deactivation technology. During daily commutes, especially in slow-moving traffic or highway cruising conditions, you can clearly notice the engine sound becoming quieter, and the dashboard will indicate when it enters two-cylinder mode. This technology automatically switches between four-cylinder and two-cylinder operation based on throttle input, saving fuel without compromising acceleration performance. I've personally tested the fuel consumption and found it saves at least 10% in city driving. The only thing to note is that it's best to take the car on highway runs periodically to prevent carbon buildup from long-term low-load operation, which could affect the efficiency of cylinder deactivation. This is particularly useful for someone like me who commutes 40 kilometers daily.
As a car enthusiast, I've studied the CT5's Tripower variable valve management technology, which is its cylinder deactivation system. The principle involves using solenoid valves to control valve lift, shutting off the spark plugs and fuel supply to the second and third cylinders under low-load conditions. Actual testing shows a power loss of less than 3%, while fuel consumption can be reduced by around 15%. The most impressive aspect is the switching speed: it takes only 0.2 seconds to switch from four cylinders to two, and it instantly restores when the throttle is pressed harder. However, it's important to avoid prolonged low-RPM driving, as this may trigger the engine malfunction indicator light. Overall, this system is much more refined than the cylinder deactivation technology in the older ATS models.
