current position:Home>Stop internal friction, I actually have to learn from a tire

Stop internal friction, I actually have to learn from a tire

2022-07-30 02:21:05Garage 42

One recent open Model 3 Friends complained to me:It is time to change a tire mileage car,But can't find the right tires.Tesla officially after 2,000 Much too expensive,Tire noise and high;Other electric car tires on low rolling resistance on the market to give up the control,浪费了 Model 3 Outstanding chassis quality.

For the tire noise problem of his mouth,我深表赞同.In the company has imported version of Model 3,In addition to as early import models bad assembly process and general NVH 控制,Pay attention to control the Michelin PS4 Road noise resulting from the tyres are not small.With the time Model 3 Not with double-layer laminated glass,High speed when the noise suppression performance is very general.

For his confusion I haven't got a way,Really don't have a mind to the performance of the electric balance tires.Between the grip and low rolling resistance,It seems you have to do a choice.

你说巧不巧,Just be heat enveloped in jiangsu 7 月,I received an invitation for the German continental.和往常不同的是,This time the protagonist is not new car,而是 eContact ——The German continental specially designed for electric vehicle tires.

In a test drive after,What surprises me most is that it makes Model 3 Tire noise suppression level up a class,No because some aspect of long board instead of the performance of the other.更让我惊喜的是,马牌 eContact Also solves the electric car a large travel spot,Made the pioneering of the electric car tires.

具体的体验如何?What is to solve the pain points?别急,一起往下看.

Change a tire,这台 Model 3 Really quiet

很巧的是,The experience of the continental model actually is also Model 3.The first day of the test drive route is hainan island high speed,Starting from the soil at bay,Reach the boundary islands scenic spot,全长 48 km.

特斯拉 Model 3 The recommended tire pressure values on the high side,达到了 2.9 bar,But get in the car I found after test driving tire pressure is in 2.4—2.5 bar 左右.在大多数情况下,Tire pressure, the lower the surface contact between the tire and the ground will,The noise will also bring more.My in the mind secretly pinched the 1,Prepare for highway noise in familiar.

但很意外的是,马牌 eContact Tyre noise is much smaller than expected.不论是 40—80 km/h In the low speed,还是 100—120 km/h 的高速巡航,Tire noise coming from the chassis is not obvious.And it's not just me a person's feelings,在到达目的地后,My friends and colleagues on communication,Everybody said the horse card eContact The tire noise than the original PS4 要更小.

According to the continental eContact The product manager introduce,eContact Tire tread patterns adopted by the simulation and to optimize the design of the fine needle pattern,The decorative pattern on the premise of ensuring grip,Friction surface of the rolling noise and vibration will eliminate as much as possible,Can significantly improve the noise performance of the tire.

In addition to the tread of optimized,Continental's engineers also design「主动降噪」.In the continental eContact The groove inside of the tire,In addition to the abrasion of tip insurance piece,We can also see middle small bump.In the process of tire rolling,The partition type of active noise control small bump can effectively block the sound waves in the circumferential grooves propagation path,To further reduce the tire noise.

此外我们知道,特斯拉 Model 3 The original sound insulation cotton are installed in the tyre wall.As a replacement tyres continental eContact At this point is the same as the original tires,Also equipped with a sound insulation cotton.Continental will call this「ContiSilent」静音技术.而除此之外,Continental another patent technology also「曲线救国」,Positive contribution to the tire noise did not small.About the technical details of the,在这里先卖个关子,接着往下看.

The weather is very changeable in hainan.短短 48 km 的高速路段,The weather has been in「大雨—艳阳天—大雨」之间反复横跳.Often open the friends should know,In the case of rapid speed rolling over the water surface on the high speed,If the drainage capacity of the tire don't pass,The wheels will suddenly lose grip,Drifting and swaying body will happen,非常危险.

马牌 eContact The tire shoulder blade shape grooves that,Good at passing water sections can cut water film,Prevent water slide.And in the continental eContact Tire lateral opening,Engineers designed a wide grooves that,可以将积水快速排出到轮胎外.

In hainan island highway,Heavy rains once big visibility less than 50 m.在这样的条件下,Our team to 80 km/h When driving, also not felt the lack of wheel grip,When rolling over a num,Body and the direction also not appeared deviation and sway.

Finally reached the destination.Is high saturation of green mountains behind,Include a small village;Moving around is quiet Model 3 ;Front is lying in waves in the boundary chau island looks like a beauty.This little beauty is the boundary between the north and south climate hainan island、The natural geography in south to north and Joan Joan marginal line,At the same time LingShui County cut-off and wanning administrative.

See enough of the beautiful scenery of hainan,Don't forget to imprison son earlier I sell:In the continental eContact What else is on the specific technical?

To a tire to learn how to stop internal friction

Tires nail lead to leak,It is common to?In the era of traditional gasoline car,As long as you will use the sleeve,Basically in half an hour can change into spare tire to go ahead on your own.但是问题来了:据统计,The Chinese market in the sale of new energy car 90% The above models are not equipped with a spare tire.If electric cars to plunge into tire air leakage to do?

Pay attention to the wei to car service solution simple and crude:Direct let staff on standby.But the other trolley car owners encounter this kind of situation is not so simple.My colleague tinker bell once in the middle of the night 2 Point on some brand electric SUV Met Mr. Hammer on the highway flat case.After a hard information registration,Manufacturer is finally sent staff.But because it is in the middle of the night,Poor tinker bell at the edge of the highway from the morning 2 Point and so on in the morning 7 点.

你以为这就完了?The weight of the trolley so big,Generally the accessory small jack at the top of the fixed body.The final fee the skylight mount pulley reluctantly would get on the car trailer.你看,A small nail can bring so much trouble,It has become the hidden trouble of the electric car with a subtle and pain points.

Electric car space is precious,Spare tire takes up too much space;Small jack couldn't withstand the quick 2 Ton of tram.仔细想想,If a tire to repair small nail pierced themselves,那么问题不就解决了吗?

So the horse card in eContact On the new energy automobile tires brought Contiseal 自修补技术.原理很简单,Continental in the inside of the tire is coated with a thick layer of high viscosity sealing layer,When diameter less than or equal to 5 mm The nail into the tyre,These seal coating can penetrate gap fill the leak point.

其实说起来,Since the tire repair is not new technology product,But there are two problems with this kind of product has been:

Repair glue in the high temperature liquid will enhance.Originally uniform attached on the inner wall of the tyre colloid clouds of solidification would happen,Lead to dynamic balance of failure;

Almost all the repairing tires on the market can't and tyre in mute cotton have it all,两者只能选其一.

马牌 eContact Tires will both pain points to solve.一方面,According to different and the depth of the auto enterprises cooperative r&d,Some types of continental eContact Tires will concurrently at the same time ContiSilent Built-in mute cotton and ContiSeal 自修补技术.另一方面,Continental with special repair glue patent formula,In the tyre within ten years the life cycle of guarantee have ability to repair.

According to the research of continental,路面上 92% The tread of puncture risk are diameter less than or equal to 5 mm The sharp objects,所以 ContiSealSince the repair technology is enough to cope with risk in most of the road.This layer of repair glue can also let the tire rolling can reduce resonance,「曲线救国」Improve the sound insulation performance.

Say that finish technical stuff,Of course still need to implement to the actual experience.Continental found two simple rough steel nails in Model 3 On tire,Slight crackle with two,Of repair glue in sight fill in the gap.The nail broken tire broken mouth watering,We found and no bubbles appear at this time.

很好,But if with nail to toil for a mountain,Since the repair will be effective?

有操控,Life is not a discount

身上「挂彩」的 Model 3 And we brought mountain road.这里,Is hainan xinglong national forest green way.虽然距离不长,全程只有 4 公里,But this short 4 Km is a dozen sharp,Fall of on any account is very big.Just rain the road is covered with wet mud and leaves,For the handling of the tire and grip put forward quite a test.

I slow down the speed of the car,与前车拉开距离.Wait in front of the team disappeared,用 3、9 Some hold the steering wheel,Will switch on deep.虽然 Model 3 The chassis of the limit of high,Because of the touch is not clear where the tyres grip border,So I just slowly speed testing before a couple of corners.「注:The entire drive within the speed limit.」

Although the old leaves on the ground everywhere wet,但在弯道里 eContact No any ring tyres sound,No signs of sliding.I ventured deep hit the switch when the bending,The grip of the tyres completely HOLD After the displacement of the Model 3,In the corner supporting is enough,No drag chassis back.

At the end of a straight,I will brake on the bottom.Under this scourge of violence,The meaning of tire just a little bit with the skid.马牌 eContact Tire could keep a good grip in the wet it this thing,We scored two ways.

一方面,Said tire shoulder blade shape on the grooves and the lateral open wide grooves can tear film,Rapid discharge and water to the outside of the tyre;另一方面,Continental didn't forget his own movement gene,Tires on the movement of asymmetric rib to the new energy special tires.

Because the tires on corners needs to resist transverse tear,Symmetry of the rib in this case there will be a large deformation around,Due to lack of grip.Asymmetric rib design can make the tyres in turn against powerful ground friction when tear keep the biggest contact area.

此外,On the decorative pattern on the surface of the tyre,Engineers design cant chamfering.Use the eraser analogy,Rectangular eraser is easy to occur when hard to wipe「卷边」,May even direct torn apart.Cant chamfering on the one hand, to ensure the tire contact area,On the other hand also let the brake abnormal wear of the tire decrease.

马牌 eContact As a new energy tire,When the design must consider the optimization of life.我们发现, eContact Surface around the tiny pits,Isn't this like a golf ball?

Surface roughness of the golf ball flight distance can achieve a smooth surface 5 倍,This is its surface pit credit.Golf ball pit for surface air tight fit in the spherical,Making smaller rear swirl air resistance,To be able to make a golf ball fly farther and faster.The horse card engineers find inspiration,On the outside of the tire designed similar pits,Let the oncoming airflow form turbulence,But tightly on the tire surface smooth through the.

Today's test near the end,I looked at it a few days 200 km 的试驾后 Model 3 的能耗表现:15.4 wh / km.Although the weather is very suitable for lithium batteries work in hainan,But we should mean also very aggressive along the way,Has been basically in road driving speed limit and there are a number of high-speed road.The energy consumption performance has been proved that the horse card eContact As a new energy tires won't drag life back.

回到酒店,Staff unplug the two nails in the morning in the tyre.The dashboard display tire pressure is still 2.4—2.5 bar,Nails, unplug the repair fill in the pore,No flashlights to take a closer look at you can't even find break.eContact Since the repair ability has proven.

写在最后

On the German continental applet at present eContact 仅有一款 235/55 R19 的规格,售价 1,199 元.适配 Model 3 的 18 寸型号,Our test specification,Market is expected next month.As for the other models,The German continental market expected a month 1-2 款,All listed next year is expected to 2 季度,Specific launch types below:

As the car only a contact with the ground parts,The importance of tire is self-evident.Although new energy special tires and fuel car tires didn't like new energy cars and fuel cars earth-shaking change,But for most electric vehicles have no spare tire、Pain spot problems such as rolling resistance and control should be considered for these cars change behind the tyre manufacturers must keep pace with The Times change.

Who first to solve the pain points,Who will win the incremental market.你看,Is not only a new energy vehicle volume,Fire has spread to the tyre manufacturers between.

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