What does the '2' mean in the Roewe 350 automatic transmission?
2 Answers
L stands for the gear being limited to 1st gear, while '2' means the transmission can shift up to a maximum of 2nd gear. Below are some relevant introductions about automatic transmissions: 1. Automatic principle: The engine's power is transmitted through the gearbox, which is also a key factor affecting fuel consumption. Generally, automatic transmissions consume 10% more fuel than manual transmissions. Whether manual or automatic, the more gears a transmission has, the more fuel-efficient it is. 2. Driving techniques: For manual transmission vehicles, it's advisable to shift gears at higher RPMs. Engines are designed to operate at higher RPMs, with various components' dynamic balance and rotational inertia parameters optimized for high-speed operation. If the engine runs for extended periods outside its optimal operating range, internal components experience increased load and wear, leading to frequent vibrations and knocking, which can affect longevity. Choosing 3000 RPM as the shift point ensures that after shifting, the engine operates at around 2300 RPM, maintaining it within a healthy RPM range.
When I previously drove the Roewe 350 automatic transmission, I used its 2nd gear function, which mainly keeps the car in second gear or lower, suitable for situations requiring a fixed speed. For example, when climbing a steep slope, I shift to 2nd gear to increase the engine RPM, providing more thrust and making the climb easier. On long descents, I also use 2nd gear to utilize engine braking, helping to slow down and reduce frequent brake usage to prevent overheating issues. This feature is very practical for driving on mountain roads or uneven terrain, but remember not to use it continuously on flat roads, as it can increase fuel consumption and wear out the transmission. I recommend beginners first try switching gears in an open area to get a feel for it, avoiding high speeds—safety first. I’ve had personal experience using 2nd gear to control sliding on wet roads during rain, effectively preventing skidding risks. It’s truly a thoughtful design.
