Golden Dragon Evolution: Defining Buses with Software through Chirui's Lens

2024-07-19

Since its mass production in 2022, the third-generation 6-meter intelligent driving minibus of golden dragon, Chirui, has blossomed at multiple points and has been widely used in various scenarios such as micro circulation public transportation, park commuting shuttle, and scenic sightseeing. From the perspective of vehicle market positioning, Chirui is an upgraded product built on the basis of market demand and existing autonomous driving "Star" and "North Star". Through the same platform, two products, No.1 and No.2, are created to meet the needs of two different fields: autonomous driving and micro circulation public transportation.

Let's first introduce what upgrades the Chery has made in terms of basic vehicle performance as a pure electric low entry bus model. Firstly, the Chery has undergone comprehensive optimization in terms of body shape, size, and overall layout. The front and rear body shapes are basically the same, with symmetrical side panels, which not only have a sense of technology and futurism, but also enhance the modularity of the vehicle. In order to obtain a larger interior space, the dimensions of the Chery have reached 5995 * 2095 * 2830mm in length, width, and height, which are longer and wider than models in the same class; In the case of achieving a height of 2121mm inside the vehicle, the outer height is reduced by 55mm, which is more conducive to passing through the restricted height section in the park; The wheelbase is shorter, only 3790mm; Under the premise of ensuring internal space, the vehicle has better passability, and the flexible maneuverability brought by smaller turning radius is also more suitable for use in scenarios such as microcirculation.

In addition, with the improvement of interior space, the Chery has implemented a standard 9+1 seat layout, and the number of seats in the last row has been increased from 3 to 4 in similar models. The transparent area of the vehicle's glass has reached 16.6 square meters, enhancing the transparency of the interior and providing a good view for the driver and passengers. The net width of the electric sliding door reaches 1200mm, effectively improving the efficiency of boarding and alighting during peak operating hours.

After introducing the technological upgrades of the basic vehicle models, let's focus on the upgrades of the Chery in intelligent driving. It is reported that the Chery L4 autonomous driving model completely eliminates the driving area inside the car and uses a vehicle grade solid-state laser radar as the main radar, equipped with a comprehensive intelligent fusion perception system consisting of 8+solid-state laser radars, front and rear millimeter wave radars, 360 degree surround view cameras, and close range ultrasonic radar as sensors. It integrates global satellite navigation system, sensing technology, and feature positioning technology to achieve centimeter level high-precision positioning. The wire controlled chassis adopts multiple redundant designs, achieving millisecond level control and lateral control accuracy of up to 0.1 degrees.

From the current overall performance, Chirui has gained recognition from all parties in the market, which also indicates that golden dragon has explored a suitable technological path in the field of intelligent driving for buses: based on the needs of real scenarios, building its own core technological capabilities, and promoting the transition of autonomous driving buses from demonstration operation to true commercial application.

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