Extensive use of aluminum alloy parts Analysis of Jikrypton 001 chassis

★ Posted on 12-08,2024

Bitauto's original Ji Krypton 001, as the first product of SEA's vast architecture, has always had a good response since its launch. After test driving this car, many friends and colleagues around me have high praise for its mechanical quality. So today we will use chassis analysis to interpret the chassis hardware of this car.

Model introduction:

Jikrypton 001 is built based on SEA's vast architecture. It is different from traditional medium and large cars. Its hunting suit shape shows the elegance and dynamics of a sedan and the capability and practicality of a station wagon, breaking the aesthetic fatigue of traditional sedans. . The car adopts the photoelectric mapping aesthetic design concept, which combines the elegant hunting suit shape with the full and round body lines, fully satisfying all the car owners' imaginations for personalized styling.

In the interior, Ji Krypton 001 has created a traditional sense of luxury through design and materials. In terms of materials, it uses NAPPA first-layer genuine leather, Alcantara suede and Microfiber superfiber ceiling. The visual effect, texture and touch are very good. The center control panel with patterned texture runs through the entire dashboard, which plays a great role in enhancing the sophistication of the interior.

In terms of power, the shooting car is the Ji Krypton 001 ME version. It is equipped with front and rear dual motors. The motor has a maximum power of 400kW and a maximum torque of 768N·m. It is matched with a 1-speed fixed-ratio gearbox that is common in electric vehicles. The official 0-100km/h driving time is 3.8 seconds. The battery type is a ternary lithium battery with a capacity of 100kWh and a CLTC cruising range of 616km.

SEA’s vast architecture:

SEA’s vast architecture builds a three-dimensional three-dimensional layout with hardware layer, system layer and ecological layer. The architecture platform has a high degree of design flexibility. For example, the wheelbase, front and rear overhangs, vehicle height, and suspension can be changed according to needs to achieve full-size coverage from mini cars to large cars, and can meet the needs of sedans, SUVs, MPVs, and small city cars. , sports cars and pickup trucks. Jikrypton 009, smart Elf #1, and radar RD6 are all products under SEA's vast architecture.

Chassis structure:

From the overall view of the chassis, Jikrypton 001, as a pure electric vehicle, does not have an exhaust and transmission system in the traditional sense, so the flattening of the chassis is very good. Both the front and rear axles are equipped with fiberglass lower guards, and the battery pack in the middle is protected by an aluminum alloy shell. The overall combination not only seals the chassis tightly, but also optimizes the aerodynamics of the bottom of the car. .

The front subframe of Ji Krypton 001 is a full frame structure, which is formed by double-piece stamping and welding of steel. Due to the full frameThe subframe is a closed structure, so it provides a more complete rigid support for the powertrain and suspension system. More importantly, when encountering a frontal collision, the subframe and body longitudinal beams can jointly absorb the impact force of the frontal impact and play a positive role in dispersing and directing the force.

In the middle of the subframe is the front motor of the vehicle, with a maximum power of 200kW and a maximum torque of 384N·m. The supplier is the domestic brand VReMT.

The steering gear assembly of Ji Krypton 001 is arranged in front of the front wheel, so in order to better protect the steering motor and steering rod, an additional reinforcing rod is specially installed for them to protect them.

In the middle of the chassis is a power battery pack protected by an aluminum alloy shell of considerable thickness. Aluminum alloy materials have good heat dissipation, which can keep the battery at a good operating temperature, and can save a lot of weight compared to steel materials.

The rear subframe is made of a rare aluminum alloy material, welded by two thick lintels and cast aluminum parts connected to the suspension at both ends, forming a compact, lightweight and strong structure. Very tall, full frame subframe.

The rear subframe and the body are connected by a hydraulic bushing. Its function is to reduce the vibration generated during driving and improve vibration filtering. It can be said that it is one of the important parts to improve ride comfort.

The rear motor is completely wrapped in the subframe, so there is no need to worry about safety. The motor is also provided by VReMT, and its power is the same as the previous motor.

Front double wishbone independent suspension:

The front suspension of Jikrypton 001 adopts a front double-wishbone independent suspension. All parts of the suspension are made of aluminum alloy, and the lightweight design is very good. Compared with MacPherson-type suspension, the double-wishbone independent suspension has better lateral rigidity and higher structural stability due to the presence of the upper control arm. The geometric changes in the suspension work can better adapt to the road surface and maintain tire contact. Ground area, thus having stable grip performance.

But different from the traditional front double-wishbone independent suspension, the car's lower control arm is replaced by a triangular control arm with two connecting rods. Compared with the use of traditional triangular control arms, the two control arm rows form a virtual hinge point that is closer to the wheel contact position. At the same time, it will change according to the steering angle to maximize the ideal wheel contact. angle, as well as a more natural steering feel and a more stable high-speed straight-line driving state.

The white Akipolo opposing four-piston brake calipers are exclusive to the Ji Krypton 001 long-range dual-motor version. The shape of this brake caliper is intimidating, but the size is a bit too bulky., will add unnecessary weight.

Rear multi-link independent suspension:

Ji Krypton 001's rear multi-link independent suspension is composed of an H-shaped control arm backed by a spring and two connecting rods, both made of aluminum alloy. It is worth mentioning that the H-shaped control arm also adopts an integrated casting hollow process to further reduce the unsprung mass and improve vehicle handling. The H-shaped control arm has two articulation points with the subframe, and its structural strength is higher than a control arm with only one articulation point, so it can set off a greater body mass. This is especially true for Ji Krypton 001, which weighs more than 2 tons. Especially important.

In addition, the rear suspension has a more distinctive design highlight. The H-shaped control arm and the bearing seat are connected by a vertical connecting rod. Its function is to guide the wheel's upward jump angle and reduce the wheel's jumping angle. The force of collision with obstacles improves ride comfort. At the same time, it can also suppress the torsion caused by the force on the bearing seat during driving, preventing changes in four-wheel positioning parameters from affecting control performance.

The toe control arm and the subframe are connected by eccentric bolts, which means that in the original factory state, the rear wheel toe angle can be adjusted to a certain extent. The rear brakes are floating single-piston calipers and ventilated discs.

Test drive experience:

As an electric vehicle, the accelerator pedal setting of Ji Krypton 001 is relatively linear, and the power output can be controlled softly without too much adaptation. There is no doubt about the power performance of the ME version, and the straight-line 0-100-speed performance of 3.8 seconds does not feel like a false standard. The impact and even dizziness you get when you step on the accelerator pedal is very direct.

The car has a total of 7 driving modes: comfort, economy, sport, snow, sand, off-road and personalized. The personalized mode can customize the power response, braking and steering. After actual experience, I personally think that the comfort mode is most suitable for daily driving. Its power output reaches a good balance between sensitivity and comfort.

Ji Krypton 001’s braking feel has a heavier damping feel, and the output of braking force is also very linear. These are very good, because electric vehicles basically use electronic booster pumps, so the brake pedal of most electric vehicles feels like "stepping on a spring", giving people the illusion that the car cannot be braked. Users who are used to driving gasoline vehicles will need it. It takes a long time to get used to it, but there is no such problem on Jikrypton 001.

The steering feel of Ji Krypton 001 is solid, but it has a strong electronic flavor and does not have a strong sense of communication with the road. It feels a bit like a luxury car. The response speed of the front of the car is relatively fast in the early stages of turning the steering wheel, and the directionality is also very precise, but it will be a little blurry in the middle and later stages.

Although ME has the ability to break 100 km/h in 3 seconds, the chassis is still tuned to be a car that caters to daily household use. While it provides sufficient suspension toughness, it even has a lot of comfort. The actual performance of intense driving is that it is more interactive than you expected. The limit of the vehicle does not come so early. The slightly tougher suspension adjustment brings more controllable range, taking into account certain aspects. of driving pleasure.

Editor’s comment: Ji Krypton 001 is very willing to spend money on chassis hardware. Except for the front subframe, the large parts of the chassis are basically made of aluminum alloy parts. The structural layout design is also very reasonable. It is a design that can withstand scrutiny and has a high degree of completion. Judging from the test drive experience, the actual feeling of the car is worthy of this chassis, and the adjustment is also in line with its positioning as a luxury hunting coupe. It not only takes into account the control, but also has a very high-end feel.

According to the Bitauto popularity list, Jikrypton 001 has an average daily attention of 27,300, ranking 12th in the popularity list of medium and large cars. For more data, please view the Bitauto App.

*Note: Some of the pictures in this article come from the official website and the Internet.

❋ Tags: