What is the working principle of the Sylphy synchronizer?
2 Answers
The working principle of the Sylphy synchronizer is: During gear shifting, since the speed of the power output gear is faster than that of the gear to be engaged, it solves the mechanical device that addresses the inconsistency between the engine speed and the transmission speed during gear shifting operations. The synchronizer consists of an engaging sleeve and a synchronizing lock ring, and its characteristic is to achieve synchronization through friction. The Sylphy is a compact sedan under Dongfeng Nissan. Taking the 2021 Sylphy as an example, its body structure is a 4-door, 5-seater sedan with body dimensions of: length 4631mm, width 1760mm, height 1503mm, a wheelbase of 2700mm, a minimum ground clearance of 166mm, and a fuel tank capacity of 50 liters.
As a seasoned driver who frequently drives a manual Nissan Sylphy, I find the synchronizer quite fascinating. It ensures smooth gear shifting by matching the rotational speeds of the gears, preventing the grinding noise. Specifically, when you push the gear lever, the synchronizer's slider moves first, pressing the conical friction ring against the cone of the target gear. The friction adjusts the gear speed to match the current shaft. Once the speeds align, the locking mechanism releases, allowing the gears to engage smoothly. If you experience rough or jerky shifts in a manual Sylphy, it might indicate a worn synchronizer, requiring a check of the transmission fluid or part replacement. This system makes driving a manual as smooth as an automatic, even for beginners. Gentle shifting can extend its lifespan, especially noticeable when upshifting on highways.
