What does CVT continuously variable transmission simulating 8 gears mean?
4 Answers
To achieve the manual-automatic transmission function, an 8-speed forward gear is simulated, providing 8 gear positions in manual mode. The introduction to CVT simulated shifting is as follows: 1. Introduction: CVT is a continuously variable transmission, theoretically offering an infinite number of gear ratios. To enable the manual-automatic function, the gear positions in manual mode are simulated. Strictly speaking, there is no difference between them, except that the latter offers 8 speeds in manual mode. 2. Difference from AT: The smoothness and fuel efficiency of CVT transmissions surpass those of AT transmissions, but the strength of power transmission and the capability to handle maximum peak torque are not as high, and the extreme acceleration ability is inferior to AT models. 3. Explanation: Driving a CVT is not much different from driving a traditional automatic transmission. The 8-speed is just a simulated gear position. The manual-automatic feature means that a manual mode is added on top of the automatic transmission, allowing for manual gear shifting operations.
The so-called "simulated 8-speed" is essentially a CVT transmission with a driving mode that lets you play with gear-shifting sensations. Although CVT itself uses a steel belt connecting two cone pulleys for continuously variable transmission without actual gear changes, manufacturers specifically set 8 fixed gear ratio points to cater to drivers accustomed to traditional automatics. When you tap the paddle or move the gear lever, the transmission locks at that ratio to deliver power, mimicking real gear shifts. Personally, I enjoy using manual mode on mountain roads—downshifting to rev higher delivers more responsive power, then switching back to D mode on flat roads for fuel efficiency. But since these aren't physical gears, the shifts feel much smoother, retaining CVT's inherent silkiness.
Basically, the manufacturer created a game for drivers to enjoy the thrill of shifting! Originally, the CVT could stretch and shrink freely like a rubber band for gear changes, but now they've forcibly added 8 fixed positions. When you manually shift while driving, the computer immediately locks the cone pulleys at preset positions, briefly pretending to have fixed gear ratios. I tried it in the X-Trail—flip the paddle and the RPM jumps instantly, and you can even control speed downhill by downshifting without wearing out the brake pads. But compared to a real AT, its simulated shifts are a tad slower, and the jerks are gentler. If you're after pure driving excitement, it still falls a bit short.
CVT simulated gears are actually achieved by pre-setting specific gear ratio points. The originally continuously variable cone pulley set is programmatically locked at 8 fixed positions to simulate stepped gear shifting effects. The primary purpose is to satisfy driving psychology - manual shifting allows precise control over RPM ranges, with downshifting for overtaking delivering more responsive power. I've noticed this design also optimizes fuel efficiency during highway cruising, as fixed gear ratios reduce belt oscillation frequency. However, for daily commuting, the automatic D-mode remains the most hassle-free option, since simulated gear operation doesn't affect the transmission's protection mechanisms at all.
