E-MAIL
China has already became the biggest buses manufacturing power but not the greatest power, so what is the gap compared with Benz and Volvo? Maybe we can find the answer through the improvement from the details when Bonluck Bus learned from the west.
Take the recently launched Bonluck JXK6122 for example; based on the mature R&D platform for Bonluck 12M public transport the vehicle is adopted Eaton Hybrid System and updated from the hybrid vehicles exported to Australia last year. As the core power system, Cummins Euro-Ⅴ Engine matched with Eaton transmission gear have became Bonluck familiar and classic matching technique and were adopted by many vehicles exported to Australia, and its stability have been appraised by Australian market in the past five years.
If chassis technique is Bonluck traditional advantage, then the frame improvement in details on the auto vehicles exported to Europe are their challenge and innovation on supreme auto technology.
As the saying goes: connoisseur knows knowledge; all visiting clients and industry insiders are convinced by the frame structure of the auto vehicles exported to Europe. As we all know, the frame of entire vehicle is like bone to our body, and it is related to the vehicle’s exterior appearance and its ability to bear extraneous force. As introduced by the Bonluck technicians, the biggest advantage of the frame lies punching reinforce plate is adopted in the critical weighted position; adjacent weighted positions are linked with an armor plate so strikes on this area will be dispersed effectively; and the usage of several armor plates make the five parts of the entire vehicle a sealed U closed-loop, so the strike can be dispersed to adjacent area as well as the whole vehicle, in this way the resist ability of the whole vehicle would be strengthened. Don’t worry about the weight of the entire vehicle; the punching design was adopted in the armor plate by the technicians, namely each armor plate is drilled in accordance with the weighted structure, so the weight of the armor plate is reduced and the resist ability increased at the same time. The frame of the entire vehicle is made of imported Australian square steel and its weight is 300-500 kg lighter than domestic square steel, so the weight of the entire vehicle would be within the requirements of ECE.
Apart from the punching armor plate design, the technician also pointed out some other details: inclined strut structure is adopted in the 90 degree links so the resist ability and rebound tension would be effectively strengthened in the links of the five parts and critical weighted area when encountered crash or extrusion. And supporting reinforce upright posts are placed both sides of the hollow-out passenger doors so as to increase safety and stability of the bilateral passenger doors.
These are some of the charm of details we can find, and there are also some details which cannot by easily found but they may also reflect the preciseness of European technology. There are some extrusive tiny ostioles around the links of the armor plate, which may be taken for some scars when welding; actually these ostioles are for wax injection into the steel tube from rustiness. Usually square steel imported from Australia can be rustless in ten years, but elaborate Europeans still require wax injection inside the steel tube to increase its service time.
Such details maybe just conventional in European buses manufacturing, but they are our direction of learning and progress. The good news is that more and more bus manufacturing factories like Bonluck are learning and absorbing to narrow their gap with world top technology.