Shulou(Shulou.com)11/24 Report--

Respondent: Ideal Vehicle Chassis Team

Author: Sun Wei

Introduction:

The ideal car turns many "super dads" into "crazy dads" by wading through sand, climbing mud and snow. Camping takes care of family members, but also brings cross-country outdoor fun, but also allows dads to be big boys again in nature.

Since the launch of the ideal L9, the comfort and convenience of the ideal magic carpet have been well received by many users, even Luxembourg Ambassador to China H.E. Dr. Marc Hübsch expressed his praise: "Air suspension is a high and luxurious configuration in the hearts of Europeans. It is very good for you to make this affordable. "

Behind this, there is a meritorious team-ideal automobile chassis team, which insists on implementing the very strict quality standards and very poor test standards of the whole industry from the ideal ONE period. After making the explosion model, they did not stop, but made up their mind to self-develop and pave the way for the ideal L series to become the market explosion model.

The king exploded when he appeared and won today

"From the beginning of the ideal ONE design, we paid great attention to suspension. Ideal car to create a mobile home for users, happy home, ideal ONE is the company's first extended range car, providing long life, large space, but also a certain amount of driving fun. At that time, the front McPherson and rear multi-link suspension were the best choices. "

Su, head of commodity evaluation, is also very confident about the safety of the ideal ONE suspension."In terms of performance, in addition to comfort, McPherson's safety is not weak. "

During the research and development process, in order to simulate the extreme driving situations that users may encounter, Teacher Su and the team put on helmets and violently crashed into the high 180mm shoulder from lateral, frontal and large turns at a speed of 30- 50km/h. "The tires burst, the steering gear outer tie rods bent, the radiator leaked, and the suspension still had no problems. "this is the conclusion he came up with in the test field.

The test vehicles in this stage will also carry out high-intensity durability and reliability tests, covering almost all road conditions encountered by Chinese users-plain, grassland, sand dunes, mountains, deserts, typical urban conditions, such as high-speed, Urban area roads, speed bumps, cobblestones, potholes and other types of roads. The standard intensity score of ideal ONE is higher than that of major mainstream automobile enterprises.

This is an invisible cost. How much you are willing to pay depends on the enterprise itself. The higher this value, the more technical redundancy, the higher the safety factor and the higher the cost of parts.

"This is our bottom line, and it is also our courage to promise users a 5-year or 100,000-kilometer warranty. "Nango, head of the chassis suspension performance team, said.

"Brake system" means brake, which is the most important hardware system of a car. Whether it can ensure driving safety depends largely on it. Ideal ONE is the first in China to apply CRBS (Coordinated Energy Recovery System) and achieve optimal performance.

In the process of ideal ONE development, most domestic new energy automobile enterprises follow the development function with the single pedal mode of a foreign brand as the benchmark, believing that this mode can not only improve the battery life efficiency, but also reduce the wear of brake pads.

After full analysis and rational judgment, the chassis team believes that there is a great risk_on the one hand, it does not conform to people's driving habits and body intuition, which is easy to cause misoperation and danger. On the other hand, it is especially unfriendly to the comfort experience of the member, and may also lead to failure or delay of the braking system, increasing the risk of collision.

The chassis team adhered to the concept of being responsible for user safety, adhered to the attitude of not blindly following, avoided risks from the early stage of design and development, and made correct decisions.

However, since CRBS has just been introduced into China, suppliers do not have mature calibration engineers."In the process of learning and doing, the more problems solved, the faster the growth will be. "said brother liang, head of chassis electronic control.

Teacher Su is recognized by the team as having the subjective evaluation ability of "sensor level." In the process of adjusting the ideal ONE brake system, the deceleration fluctuation of 0.05G will also be checked by him. This is also the first time a supplier has encountered such a "point-to-point" acceptance team from an OEM. Teacher Su's "picky child" has "trained" a young engineer from the supplier into a domestic adjustment expert in the direction of CRBS.

The driving pleasure of the ideal ONE is brought about by the dual-mode shock absorber imported from Europe. Back in 2019, due to factors such as cost and technical difficulty, there were few domestic brands providing dual-mode shock absorbers for users. At that time, there was another new energy vehicle enterprise with strong background and we developed at the same time, and finally chose to cancel this configuration.

Dual-modal shock absorbers literally "allow the user to turn one car on while two cars on"-dual-modal shock absorbers combine passive shock absorbers and soft valves to achieve better comfort when the soft valve is active and to achieve better body control when the soft valve is closed.

The advantages of the dual mode shock absorber over the adaptive damper FSD (which adjusts the resistance of the shock absorber according to the degree of jolting by automatically adjusting the hydraulic oil flow in the shock absorber cylinder by increasing the valve) are still obvious-FSD is a frequency sensitive shock absorber, and the higher the frequency of the shock absorber with the wheel, the lower the damping of the shock absorber.

In fact, FSD still belongs to a kind of traditional conventional shock absorber, and does not have the function of real-time continuous adjustment and OTA. It can only have one suspension style, and the adjustment range is very limited, which is determined by the "gene" set before FSD leaves the factory.

The chassis tuning of the Ideal ONE was done by the European luxury team. Liu Liguo, vice president of vehicle electric, is a chassis expert with deep attainments in chassis adjustment. He has been responsible for the adjustment of many luxury cars of BMW, Volvo and other brands, and is very familiar with which talents are real "big winners" in the circle.

Mr Lau singled out European tuning experts with more than 20 years of chassis tuning experience for the ideal job. This specialist has been responsible for adjusting shock absorbers for Ferrari, Porsche, BMW and other models, and has participated in the development of Porsche 911, Macan, Cayenne, Panamera and other models.

Finally, through four-wheel optimization, we selected the optimal solution from 39 spring, stabilizer bar and shock absorber combinations.

To this day, the ideal ONE suspension structure remains the mainstream choice for many brands, from the sporty Porsche 911 and BMW 3 Series to the comfort-conscious Lexus RX series to the McPherson design of Fiat STILO and Ford FOCUS.

In June of this year, Ideal ONE sold out. This classic has entered more than 210,000 happy families, accompanying them on the road to happiness and growth.

Instead of resting on their laurels, the Ideal Chassis team chose to continue growing to create new products and usher in another industry-leading era of Ideal Carpet Air Suspension ™.

European supplier China president said: You are too curly!

What kind of chassis suspension does a family flagship SUV need?

The chassis team insisted that it must not leave regrets. Therefore, the eyes of examination should not only look at themselves, but also look at the industry.

"When the ideal ONE was developed, we chose the most space-friendly suspension structure in pursuit of more spacious interior space, without using higher-end air springs; We also found that although some products on the market are equipped with air springs as standard, they do not have CDC active shock absorbers, just like a bicycle without a wheel, and the ride comfort is very poor, which is also a pity; We also marked Mercedes-Benz GLS, BMW X7 and other luxury cars, but also found some regrets, such as suspension from beginning to end can only be a style, can not continue to grow according to user needs. "

In order to provide the user with flagship driving quality, the ideal L series front suspension selects a double wishbone structure, and the rear suspension selects a five-link structure. Double fork arms as a luxury car front suspension standard, whether in anti-pitch, lateral support or load bearing than McPherson has an absolute advantage. The five-link suspension structure provides more adjustment space, which can achieve excellent handling stability and ride comfort, and at the same time, due to its compact layout, it can leave more space for power distribution and passenger compartment.

Double wishbone suspension is obviously better than McPherson suspension. "When we accumulate better strength and meet the right time, we must design the flagship suspension system completely from the user's needs to provide users with better products. "Brother Nan said.

Also impressed by the chassis team's pursuit of extreme spirit was the president of European supplier China, who said directly: "You are too curly! "

The ideal L series chassis calibration period is during the epidemic situation. We cannot meet with the European calibration team and can only communicate online. In order to ensure timely delivery, we ship one vehicle to Europe and start Plan B_chassis calibration team to calibrate the other vehicle simultaneously.

Teacher Su issued "test papers" to both teams, with a total of 8 adjustment problems. A "Central Europe alignment competition" began.

When the car adjusted by the European team returned home and the "report cards" of the two cars were put together, we found that the European adjustment team had completed one question and our chassis adjustment team had completed five questions. In particular, the Europe-tuned car performed well on the test road, but not as well on the social road as the ideal team's self-tuned car.

The discussion found that remote communication caused inefficiency and misunderstanding, which prevented the European adjustment team from performing at an excellent level. The more fundamental reason has also been exposed--there is a huge gap between European social road conditions and China."Although the European adjustment team is strong, the Chinese still understand the Chinese better," Nango said.

The excellent partners in the global automotive industry laid a good foundation for us, and since then the chassis alignment team has grown rapidly and surpassed CDC calibration. According to the different needs of users, in order to improve the user experience, combined with the perception, control and execution capabilities, they have made a number of unique algorithm innovations for Chinese road conditions to improve driving comfort, such as_

Road recognition algorithm: unique all-scene stepless road recognition algorithm (road roughness recognition).

Large stroke protection algorithm: using a dedicated suspension height sensor to identify whether the suspension height increases and will continue to increase the rapid deterioration of suspension performance (such as excessive pits, bridges, etc.), increase the control force or control current in advance to minimize the body sitting down or the body being thrown up.

Vehicle dynamic stability control algorithm: use road recognition algorithm and steering wheel signal to judge under what road condition, how to operate violently, detect yaw rate, lateral acceleration, roll angle speed to judge vehicle dynamic state, dynamically adjust damping, optimize tire grip, improve response speed, adjust vehicle under-steering characteristics, improve lateral limit, and make vehicle feedback more in line with expectations.

From the powertrain to the suspension to the vehicle control system, it took us three years to hold our destiny firmly in our hands. It is the belief and self-requirement of the ideal automobile chassis team to do what others can't do, to do the chassis of "continuous growth" and to meet the needs of more users in different scenarios.

Magic carpet air suspension, epoch-making "suspension ceiling"

July 27, Ideal Magic Carpet Air Suspension ™ Technology Day, Liu Liguo introduced: The biggest difference between our magic carpet and traditional car enterprises is that our air suspension is "intelligent air suspension," that is, there is brain (XCU + self-developed intelligent algorithm)+ growth (OTA).

Ideal Carpet Air Suspension ™ is an intelligent chassis control system that runs from perception to decision making to control execution, including 7 dedicated sensors to sense road excitation and monitor body motion in real time, industry-leading chassis hardware and self-developed central domain controllers, as well as fully self-developed software intelligent control algorithms.

The team believes that flagship SUVs should pursue excellence in the direction of comfort. There are two reasons: one is the congenital condition, the size level, center of gravity height and chassis structure of the cart, which determines that it is difficult to achieve the control effect like compact car by nature, which is not good at it; the other is the use scene: the 6-seat SUV is mostly for the whole family to travel together, not only for the driver to experience well, but also for the family to sit comfortably.

Thanks to the independent R & D and design of the front five-in-one motor, rear three-in-one motor and range extender, we have created the chassis structure of the front double fork arm and rear five-link suspension conforming to the ideal automobile extended range electric platform, successfully solving the problems of low layout efficiency of the transverse extended range system and poor battery layout space, and giving full play to the passenger space. To achieve the dynamic experience of the flagship class, we are equipped with air suspension and CDC continuously adjustable damping force shock absorbers for better vehicle comfort and handling.

Unlike the traditional BBA air suspension system, which uses independent controllers, the ideal car eliminates the independent air suspension controller and integrates with the vehicle XCU domain controller. The XCU processes complex information at high speed and provides precise control of suspension systems in milliseconds faster. While achieving efficient control, intelligence can be iterated.

Through leading multi-core heterogeneous parallel computing architecture, reasonable application deployment and efficient data and software instruction caching technology, the operating efficiency of the controller can be increased by up to 56%.

Complete security policy and resource isolation technology, reaching ASIL-D functional security level.

Ideal Carpet Air Suspension ™ Technology Day revealed that as of July, Ideal Cars had delivered nearly 200,000 vehicles with Ideal Carpet Air Suspension ™ and traveled more than 1.66 billion kilometers. Thanks to the full-stack self-developed underlying algorithm, the Ideal Magic Carpet Air Suspension ™ has been upgraded to stage 2.0, becoming the first fully self-developed,"brain-capable" and "growable" intelligent air suspension, providing users with the same comfortable, smooth and silky ride as Aladdin's mythical "magic carpet."

Behind success is the accumulation of technology, the collaboration of teams, and the power to defend faith. Liu Liguo said,"We see because we believe, not because we see. Because I believe, I will do everything possible to achieve it. "

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