What Does Intelligent Cylinder Deactivation Technology Mean?
2 Answers
Intelligent cylinder deactivation technology refers to a system where, when the engine operates under medium to low load conditions, certain cylinders are deactivated (put to sleep) through a series of methods while the remaining cylinders continue to function normally. This helps reduce fuel consumption and exhaust emissions. When higher power output is required, all cylinders are reactivated to ensure sufficient power delivery. Below are relevant details: 1. Application of Intelligent Cylinder Deactivation Technology: This technology is typically used in multi-cylinder, large-displacement engines such as V8, V10, and V12 engines. The advantage of variable cylinder technology lies in its ability to shut down some cylinders during low-load operation or deceleration, using only the remaining cylinders to reduce fuel consumption. 2. Fuel Efficiency of Intelligent Cylinder Deactivation Technology: When the vehicle requires high power output, such as during rapid acceleration or climbing, the system automatically reactivates all cylinders to provide adequate power. This balances both fuel economy and performance, achieving intelligent power management. Additionally, when some cylinders are deactivated, the system increases the workload of the remaining cylinders, indirectly improving their fuel efficiency and reducing overall fuel consumption. Typically, this can save around 8% in fuel consumption.
This technology is actually quite clever—it automatically shuts down several cylinders when the engine doesn’t need to work at full capacity. For example, when cruising steadily on the highway or coasting downhill, an eight-cylinder car can switch to running on just four cylinders. The key components here are controlled by electromagnetic valves and rocker arms, which immediately cut off fuel and air intake when detecting a light throttle press. But what’s truly impressive is the computer’s algorithm, which can switch to fuel-saving mode in just 0.2 seconds—so seamlessly that I don’t even feel any jerkiness. It’s much faster than older cylinder deactivation tech, saving a lot of fuel in traffic jams while still delivering strong power on long drives without feeling sluggish.
