This is yet another means to achieve excellent fuel efficiency.36
The Feature:
To help improve fuel efficiency, Honda’s i-VTEC V-6 engines use the latest version of Honda’s innovative Variable Cylinder Management (VCM).
When high power is required, for example during startup, acceleration or when climbing hills, the engine operates on all six cylinders.
During periods of moderate-speed cruising and at low engine loads, the system operates just one bank of three cylinders, thereby maximizing fuel efficiency.
To smooth the transition between activating or deactivating cylinders, the system adjusts ignition timing and Drive-by-Wire throttle position, and turns the torque converter lockup on and off.
The transition between three- and six-cylinder operation is usually unnoticeable to the driver.