On single-pedal driving, Tesla is not necessarily the originator, but it must be one of the most important popularizers.
First contact with Tesla's single-pedal driving mode, it subverted my understanding of driving style.
On November 8, 2019, Tesla began to push the 2019.36.x version of the software update to car owners one after another. In the new version of the software, Tesla added a new "stop mode" on the basis of the original kinetic energy recovery. When I tried with the mentality of being subverted again, I drove myself into motion sickness, and I have not been able to get used to it until today.
What are the three major benefits of single pedal operation?
Before explaining what is "stop mode", let me introduce you to the single pedal mode, because this is a change based on the single pedal mode.
The so-called single-pedal mode is, The driver can control the acceleration and deceleration of the vehicle through an accelerator pedal. Depress the accelerator pedal to accelerate, and raise the accelerator pedal to brake, and the strength of the brake follows the accelerator pedal The lift is linearly intervened.
Compared with the accelerator pedal + brake pedal driving mode on fuel vehicles, the original intention of this calibration is to simplify the driving as much as possible, which brings three direct benefits.
First, simplify driving.
Single pedal operation can greatly reduce the frequency of the right foot moving back and forth. In daily driving, mechanical brakes are rarely needed except for sudden deceleration or braking.
When I first came into contact with single-pedal operation, there was no adaptation process at all, so I got started directly, and using single-pedal operation when driving on mountain roads gave me a much better experience than everyone’s daily contact. The dual pedal . When I switched back to a fuel truck on the same mountain road, for the first time I felt that it was such a tiring thing to switch my right foot frequently.
Second, make the recovery of kinetic energy controllable and improve energy utilization.
This is also an advantage only available on electric vehicles. Through kinetic energy recovery and deceleration, it can effectively increase the cruising range of electric vehicles and reduce the waste of energy.
Many people will say that many fuel vehicles now also have kinetic energy recovery. The kinetic energy can also be recovered through the heuristic integrated motor connected in series with the pulley to charge the small battery. I don’t deny this, but this The amount of electricity that can be recycled in this environment is very small.
On the one hand, the capacity of the small battery itself is not large, and the other core reason lies in the charging rate. The maximum charging rate of the battery is proportional to the battery capacity. The larger the battery capacity, the higher the charging power. At present, most power batteries The charging rate is 1.2C-1.5C.
When decelerating through kinetic energy recovery, the peak generating power of the vehicle can reach 70-80 kW, and the small battery on the fuel vehicle can not eat so much power, nor can it eat so much energy, so more Too much kinetic energy is still wasted.
(The power battery used in the hybrid vehicle is not discussed here.)
Third, reduce the wear of the brake disc.
Because most of the braking actions are passively recycled and replaced, it can greatly reduce the wear of the brake pads. Once a Model S owner told me that he usually uses single pedal operation and rarely uses brakes. The car has been driving for 3 years, and now it is more than 60,000 kilometers, and the brake pads have not been changed once.
At present, most models that support single-pedal operation can pass over kinetic energy recovery to reduce the vehicle speed to 8-30 km/h. If you want to stop, you need to step on the brake pedal to achieve, and it is not absolute Single pedal in the sense.
and Tesla’s latest stop mode can achieve full stop . Once the new version of the software is updated, I also experienced it for the first time. As a result, the above also said, yes I drove motion sickness by myself and didn't eat dinner.
Where are the three unsuitable points of stop mode?
Tesla’s new stop mode has three options:
Slow travel: "Release the pedal to advance slowly", which is the regular single pedal mode, the same as before the update.
Rotation: "Release the scooter to scroll", Tesla's translation is a bit difficult to understand. From my personal experience, in this mode , The vehicle will decelerate to 8 km/h just like slowing, and after 8 km/h, the vehicle will taxi to a stop.
Keep: "Reduce the applicable vehicle speed for energy recovery, and automatically combine braking to stop the vehicle, thereby maximizing the cruising range", that is, kinetic energy recovery The intensity of intervention will be greater, and after releasing the accelerator pedal, the vehicle will decelerate faster to a stop.
focuses on the introduction of "保护". The intention to introduce a new model is obvious, to simplify driving to a greater extent, further recover kinetic energy, and increase cruising range.
In experience, when the vehicle speed is above 30 km/h, there is no difference from before the update, and the key changes are concentrated below 30 km/h.
First, change the braking point.
Under the original driving habits, we may completely release the accelerator pedal when we are still 40 meters away from the vehicle in front, and slow down by relying on the kinetic energy recovery mode. But the kinetic energy recovery in the new mode is more powerful, and I can completely release the accelerator pedal after 25 meters from the vehicle in front.
If you try the new mode with your original driving habits, you need to click on the switch every time you stop, and let the car go forward for a while and then stop. If you haven't fully adapted to the situation, in the congested road conditions It is very easy to get motion sickness.
This point is actually a re-establishment of the safety distance in everyone’s mind. In the past, the accelerator pedal can be completely released with 40 meters away from the vehicle in front. In the new mode, the distance is 30 meters. I still have to keep my feet accelerating. On the pedal.
Secondly, low-speed driving requires electric gate control to accelerate.
Selecting the "Hold" mode means that you give up the creep function, which means that when you want to creep at a very low speed, you need to control the accelerator pedal with very delicate footwork. The driving experience has never been before.
Third, you need to use the accelerator pedal to control when reversing.
The third point is actually the same as the second point. It is nothing but reverse driving. This is also a major change in driving habits, but the change in reversing habits is even greater.
My original driving habit was to use the brake to control the speed, but now I need to use the electric door to control the speed. I used to release the brake pedal to increase the speed and depress the brake pedal to accelerate, but now I need to depress the electric door pedal to accelerate , Raise the accelerator pedal to slow down, which is a logical subversion.
As far as my personal experience is concerned, I still can’t get used to Tesla’s new stop mode after a few days of driving. This mode does not seem to have changed much, but it can be stopped, but The driving habits of the most common traffic jams in our daily driving are completely subverted.
It is very difficult for me to control the acceleration and deceleration of the vehicle smoothly when creeping, and I can't accept to step on the accelerator pedal when reversing in a narrow parking space, so I changed it back after I got used to it. The original model.
@哲伦班长 is completely opposite to me. He said that after getting used to it, there is really no need to use the brakes at all. The driving feels easier, and one pedal is enough.
From the design of Tesla’s previous models, it can be seen that Tesla has always wanted to give this old carThe auto industry has brought some fresh blood, whether it is the pure electric route that seemed to be a maverick, or the 17-inch central control large screen that shocked the industry that year, or the first mass-produced model without a dashboard, or Cybertruck’s Appearance design is a subversion of the industry.
Tesla fully proved to us that is not that this industry does not need to change, but that no one takes the initiative to change.
It can also be seen from the calibration of Model 3 that even if the energy recovery is adjusted to low, there will be a relatively large drag force. It is not that Tesla cannot provide a lower kinetic energy recovery option, but It is Tesla wants to let most conservative users try new driving methods in this way. Only if they try can they find it good.
This is very risky. If you don’t succeed, you will be benevolent. If Tesla wants to be so strong, he must ensure that he is doing the right thing. It is something "most" people can get used to. Unfortunately, I am not one of the "most", don't know if you are?
This article was first published on the WeChat public account "No. 42 Garage"
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