Chapter 627

"No wonder I didn't find a mechanical or electronic handbrake. When Zhang Chen looked at the central control just now, he saw that there were three knobs behind the gear lever.

The large knob in the middle is used to select four driving modes: Snow, Economy, Normal and Sport.

The two small knobs next to it, Zhang Chen recognized the heating function of the front main and co-pilot seats, but he didn't find the electronic handbrake button or mechanical handbrake, and he was still depressed at that time why there was no handbrake.

"How does this work?"

"It's very simple, just press it when you park, and you need to press it when you release it. ”

"It's a bit awkward. Zhang Chen glared at the small pedal, "Very unaccustomed." ”

"I like the electronic handbrake, the pestle and a stick next to others, and the button next to me, which is high-end when you listen to it, luxurious when you look at it, and it also saves space on the side of the center armrest. Zhao Daming thinks that the electronic handbrake is more advanced than the traditional handbrake and foot brake.

"This one does vary from person to person. Fang Yuan smiled helplessly, people like Zhang Chen think it is awkward, and some people feel that it is very easy to use, pedal when parking, and pedal again when starting, that is, in case the car is lent to others, he doesn't know that the function of the foot brake is very fun.

As for Zhao Daming's electronic handbrake is more high-end and luxurious than the traditional handbrake, Fang Yuan also thinks it is right, it is indeed quite compelling, but in terms of cost, the hundreds of expensive yuan also need to be paid by the owner himself.

"Which is better, foot brake or mechanical handbrake, electronic handbrake?" Du Xiao's Mercedes-Benz is a traditional mechanical handbrake, and other models are electronic handbrakes, he is very curious about the difference between the three.

"There is not much difference between the three when used normally. Fang Yuan thinks that the foot brake and the mechanical handbrake are even more similar, that is, they have changed a position, and the handbrake has been changed from the central armrest to the original clutch pedal, which is a bit hidden and cannot be found.

In fact, the mechanical handbrake is to tighten the brake through the handbrake line such as the steel wire cable, and produce a braking effect, so that the car is stuck and fixed.

The principle of the electronic handbrake and the mechanical handbrake is almost the same, but the action of the owner pulling the handbrake by hand is replaced by a motor.

When the electronic parking brake is started and tightened, the battery supplies power to the motor, the screw rotates, and the parking brake is completed or released by wire winding or other means.

Some models are equipped with electronic handbrake, and even do not need the owner to participate, with the start and stop of the car, automatically open and close the electronic handbrake, which is particularly worry-free and trouble-free.

Some time ago, there was a news that a man drove a friend's car and ran hundreds of kilometers with a handbrake, and the brake discs were all red, because this person's car had an automatic handbrake?

"Oh, I see, it turns out that the foot brake is almost the same as the mechanical handbrake, and the electronic handbrake is different from the way the handbrake is pulled, and it is essentially the same thing. "Fang Yuan explained very thoroughly from the principle to the method? Du Xiao understood it at once, but he still couldn't believe in electronic things like that, thinking that there was no pure mechanical stability and reliability, "The electronic handbrake looks more advanced than the mechanical handbrake?" But my Mercedes-Benz and Land Cruiser are priced at more than one million, and the above is still a traditional mechanical handbrake? It is estimated that it is to consider the stability? Afraid of failure in the field. ”

"Your concerns are very right, in high temperature, low temperature, humidity, sand and other harsh environments, mechanical is indeed better than electronic stability, but there is no need to worry about the reliability of the electronic parking brake. Fang Yuan told everyone that the car has been used for a long time, and the traditional handbrake will also have a handbrake line when it is loose, and it must be pulled very high to brake, and sometimes the brake is not firm when parking on the ramp, resulting in slipping and affecting safety.

The major OEMs also know that the handbrake is not an interior panel, and it can save a little bit, which is a deadly safety component.

Therefore, the processors, sensors and actuators used in the electronic handbrake system designed and installed by the OEM factory are selected through large-scale experiments to ensure the reliability of the system.

In the case of the failure of some components, the application of fault-tolerant control technology can rely on its own fault diagnosis and compensation, so that the system can still safely complete the control task, reduce the failure rate to a minimum, and do not need to worry about the reliability of the electronic parking brake.

I really don't worry, I usually pay more attention, pay more attention, and ask the auto mechanic to check it for me when maintaining or repairing the car.

"You also said just now, the electronic handbrake is a battery-powered drive motor work, what if there is no power? In the case of no battery, is the electronic handbrake useful?" Although Du Xiao is not worried about the stability of the electronic handbrake, he is still not at ease, in case of an accident, the whole car is powered off, and then it falls into the river, and the heavy rain floods the car.

"You think very comprehensively, the electronic handbrake does need to be energized to pull up or lift, if the electronic handbrake has been started after parking, even if the battery is out of power, the electronic handbrake can still work, will continue to brake, according to your assumptions of these situations, there is really no way. In addition, the car has been put for a long time and the battery is out of power, resulting in the car not being able to ignite, even if the mechanical handbrake cannot be electrified, it can also be pushed by manpower, and then hang a gear such a rough start, the electronic handbrake will not work. Fang Yuan nodded and agreed with Du Xiao's opinion, it was worthy of being an old man who had been in the society for many years, and he had considered it comprehensively.

However, the mechanical handbrake also has drawbacks, when driving, if you forget to release the mechanical handbrake, you can still drive away, the example given by Fang Yuan just now is, unless you smell the smell of Jiaohu or others remind you to know, novice drivers often encounter such embarrassment, until you develop a habit to solve this problem.

The car with the electronic handbrake, if you forget to release the handbrake, you can't drive the car away at all, or it will automatically let go of itself, because in the program control process of the electronic handbrake, you must meet the prerequisite of putting down the handbrake before starting, otherwise it will ignore you.

In addition, in case the brakes fail while the vehicle is moving, the electronic parking brake also has an emergency braking function.

This emergency braking is not as simple and rough as the mechanical handbrake, when drifting, the wheels lock up, and the cool action begins.

It is through the intervention, the braking efficiency can reach 60 of conventional hydraulic braking, so that the car can stop peacefully, and the rear wheels will not lock, to avoid tail flicking and other vehicle out of control, which is considered to improve safety.

When everyone nodded in unison, Zhao Daming suddenly came over and asked curiously, "What if I activate the electronic parking brake when the car is driving at high speed?"

"Death. Everyone was amused by Zhao Daming's whim.

"The electronic parking brake is very smart, knowing that you can't activate the electronic parking brake when you are driving at high speeds, it will determine that you are misoperating and will not respond at all. Only continuous operation, which is equivalent to stepping on the brakes, the car will not stop at once, but slowly reduce the speed of the car, so that you have a reaction process. Fang Yuan advised Zhao Daming not to do this, there was no damage to the car, just to pay attention to being rear-ended by the rear car.

"I understand, electronic and mechanical handbrakes have their own advantages and disadvantages, but I still like electronic handbrakes. Zhao Daming was a little stubborn, "If my car is a mechanical handbrake, can I change the mechanical handbrake to an electronic handbrake?"

"It can be changed, but the cost is very high, basically thousands of yuan. Fang Yuan thinks that it is completely unnecessary, it is better to buy a few more barrels of good engine oil and a few bottles of gasoline additives to spend these thousands of yuan.

In addition, the electronic handbrake is very expensive to maintain, if the mechanical handbrake becomes loose because of the repeated stretching of the handbrake cable, you can remove the bottom cover of the armrest box, find the adjustment nut, and adjust it in a few minutes with a wrench.

The best way to find an electronic handbrake is to find a professional auto mechanic.

Fang Yuan talked about all aspects and solved all Du Xiao's doubts, he looked at Song Guoyuan and said happily, "Brother Song, your apprentice is very professional and very powerful. ”

"Well, my apprentice is really smart and studious. Of course, Song Guoyuan is very satisfied with Fang Yuan, no matter how difficult the car knowledge is, he only needs to remember it once, remember it, and draw inferences from one another, so that he can be very worry-free.

"Let's move on to this Infiniti 70L. Fang Yuan felt that Du Xiao looked at him strangely, so he changed the topic and said to Zhang Chen, "You sit down and try the chair." ”

"Okay. The moment Zhang Chen sat up, his body felt soft, crispy and numb, and he immediately showed a happy smile, turned his head and said to Fang Yuan, "It's so comfortable." ”

Zhang Chen's feeling is right, if the old Infiniti '50' seat is still a little hard, as a well-known Chinese 'sofa factory', this higher-level Infiniti 70L is a C-class executive model, its seat is wide, thick, soft texture, the wings on both sides are high and thick, after sitting on it, the body falls into it, as if the whole person is wrapped in the seat, and the overall comfort level is comparable to that of the Duke of Tianlai.

In addition, the front end of the seat of Infiniti 70L also has a manually operated extended leg rest, the extended part can provide very good support for the thighs, can adjust the seat height and lumbar support, and the sitting posture will be more comfortable and relaxed when running long distances, even if you drive for seven or eight hours a day, you will not feel back pain, and you will be tired like falling apart.

Secondly, the chassis of Infiniti's new 70L adopts the front double wishbone independent suspension, and the rear multi-link independent suspension, the chassis texture is quite good, very solid, and not as loose as most Japanese cars, after all, the same chassis has been out of these national treasure cars.

The sporty suspension is relatively stiff and supportive, and it is very clear to distinguish the state of the road surface. The suspension responds very quickly, and the wheels are close to the ground, even on sparse roads. In addition, because this car has an active noise cancellation function, the driving environment in the car is actually very comfortable if you don't drive aggressively, but it is easy to speed because it is quiet.

Also, the Infiniti 70L is equipped with standard seat heating, electric adjustment of the main and passenger seats, and the original owner himself installed seat ventilation, which is simply a few thousand yuan for Zhang Chen.

Therefore, whether it is the level of comfort, or the function or something, they all hang the seat of the Subaru BRZ that Zhang Chen is looking at.

Zhang Chen reluctantly straightened up and held the steering wheel, the texture of the leather is very good, the buttons on it are clear, and there are many functions, and it is much more grade than the bare steering wheel of the Subaru BRZ just now.

But when Zhang Chen saw the mechanical instrument panel behind the steering wheel, the area of the driving computer in the middle was not much larger than a fingernail, no wonder many functions were put in the central control, he was very speechless, anyway, it is also a C-class executive model, and Audi A6, Mercedes-Benz is a level, can't you give an LCD instrument?

It's too low, it's too downgrade.

However, for the sake of such a comfortable seat, Zhang Chen decided to endure it.

Zhang Chen rubbed the steering wheel left and right a few times, and suddenly looked at Fang Yuan next to the door, "How is the handling of this car, how is the power?"

"The control of this Infiniti 70L was beaten by Subaru BRZ, the overall feel of the steering wheel is heavy, even if it is a 25 self-priming machine, the start is a bit weak, and the very channeling Subaru BRZ is in stark contrast, but the acceleration is very linear, full of stamina, once the big foot throttle goes down, it is like changing a car, the roar of the sports tail row is coming, and the texture of V6 is still there. In short, Fang Yuan thinks that driving this Infiniti 70L off the track and Subaru BRZ to compare lap times and control is simply boring, but there is no problem at all in dealing with high-speed road conditions.

"That's right. Zhang Chen is right to think about it, like the BMW 7 Series, if you change the air suspension, the handling performance will decrease, and an executive model like the Infiniti 70L, even if it is a bit sporty, is completely incomparable with the Subaru BRZ.

Seeing that Zhang Chen was a little disappointed, Fang Yuan beckoned him to come down, "Look at the rear seats and space." ”

"What's there to see in the back row?" Zhang Chen was very confused, but he still walked down and followed Fang Yuan to the back.

When Fang Yuan opened the back door, he found that the space in the back row was so big, the distance between the seat and the front row was so large that it was against the sky, and it was estimated that he could sit on it by himself and have the size of several fists, even if he couldn't lie down, it was not a problem to cross Erlang's legs or something.

The only pity is that the rear floor is relatively high, and the passengers in the middle have nowhere to put their feet, so either two people sit or the middle one squats like a monkey.

Zhang Chen tentatively sat on it, and found that the seats in the back row were also very soft and comfortable, especially the cushions in the back row were very long, and the thighs could be fully supported, which he liked very much.

"I asked you just now, how would your future father-in-law react when he saw these two cars, you look at this rear space, look at the sunroof above, look at this leather upholstery...... Just get it. I want to do it for you in one step, and I even take the baby into account in the future. Fang Yuan said with a smile.

Zhang Chen looked around the car and thought that this was indeed the case.

Compared with the Subaru BRZ next to it, this Infiniti 70L has a more refined and beautiful interior, and more space, not to mention pulling the old man and going out with them, even if his daughter-in-law sits in the back with a big belly in the future, there is no limit to crowding and grievances.

With the little one, the daughter-in-law hugged him, and then put a folding stroller and clothes, diapers, bottles and other baby products next to him.

The space of that Subaru BRZ is too small, and the back row is the same, is it possible to go out to play or eat, let your father-in-law squat on the roof of the car, and let your mother-in-law lie on the cover?