China National Heavy Duty Truck Hao Hao heavy truck, it should be said that the independent brand heavy truck star models. This series is designed for heavy trucks in China and international markets. It adopts a number of key technologies and assemblies for advanced heavy trucks in the world, and through rational optimization, it has achieved a rational layout of the entire vehicle. The major assemblies are coordinated, unified, and reliable, and the power of the entire vehicle is , economy, reliability, environmental friendliness and other aspects have performed well.
Hao Hao series of heavy truck applications of patented technology reached 127, in 2007 won the National Science and Technology Progress Award, Jinan Science and Technology Award.
Appearance Atmosphere
The factory sent this time to the Haoqi ZZ4257N3247C 6×4 tractor, which is equipped with a HW76 extended cab with a standard single-bed sleeper. It is ideal for drivers who are on long-distance journeys to rest.
As the iconic product of China National Heavy Duty Auto's innovation, Haohe Heavy Duty Trucks has removed the traditional shape of domestic trucks from the standpoint of appearance, conforming to the trends of the development of heavy trucks in the world. It not only combines the style of the European heavy truck luxury atmosphere, but also meets the Oriental Aesthetic point of view. In front of the face, Hao Hao's bumper and the cab are the same color, full of sense, a wide black grille for Hao Hao outline a domineering face. The large curved windshield provides the driver with excellent visibility. In the middle of the front bumper, a reversible footboard is provided to facilitate wiping the front window glass, which provides convenience for the user.
Hao Hao's headlights are made of internationally popular monolithic crystal lamps, which seem to add the finishing touch and integrate with the entire cab. Among them, the low beam is a projection type, not only light type reasonable, strong penetration, night driving safer, external visual effects are also more "expertion". In terms of structure, the lighthouse can be rotated forward as a whole for user maintenance.
The combination of rear-view mirrors and under-view mirrors installed on both sides of the cab provides the driver with a good field of vision. The visual range covers the entire vehicle body, the front and the bottom, and the driver can fully grasp the driving environment. Even on narrow roads, Can easily take care of the surrounding pedestrians and obstacles to ensure traffic safety.
A 600mm x 400mm rear window is located behind the cab, which not only provides ample light in the cab, but also allows the driver to observe the rear of the cab.
Comfortable driving
The Haohe heavy truck that participated in this selection is a highway series model. The cab adopts a four-point full-floating suspension (front spiral spring, rear inlet air spring) + vibration damping device, and is equipped with a lateral stabilizer, under various road conditions. Can guarantee the stability and comfort of the cab, reduce the fatigue caused by the bumpy road to the driver, to ensure traffic safety. In order to further enhance comfort, based on the full-float cab, Haozheng also equipped the driver with a new seat with a waist airbag and an upper backrest adjustment device. The steering wheel is adjustable up and down, front and rear four directions, to facilitate different body driving The operator finds the right angle for his operation.
Unique pull-down door opening mechanism, convenient and effortless driving door, 90° maximum door opening angle, two side door inner handles and two stainless steel anti-skid pedals make door opening and getting on and off safer and more convenient, fully embodying humanity.
The ergonomically designed wrap-around instrument panel has a wide range of commonly used function buttons that are distributed in a logical and accessible manner. The combined instrument panel incorporates a liquid crystal display of the CAN bus electrical system. It can display traffic data, including various running status and fault information of the vehicle. The driver can keep track of the working conditions of all parts of the vehicle. The VDO sound system that supports mp3 format file playback is in line with today's fashion trends.
In addition to ensuring driving comfort, Hao Hao also pays great attention to creating a comfortable interior environment. The auto-cooled and air-conditioned car uses a simple key setting to quickly reach the temperature set on the LCD screen. Reasonable duct design, in the closed state of windows and doors, through the front and rear enclosure ventilation window, can effectively maintain the indoor air circulation, warm air passage is connected with the two sides of the door, can quickly defrost the sides of the glass defogging. The width of the extended sleeper is 600mm, and the steel wire mesh skeleton is lined to effectively relieve the fatigue of the driver. The cab is equipped with a sunroof, which not only facilitates ventilation in the vehicle at high speeds, but also allows ventilation and ventilation when the car is closed to close the doors and windows, which improves the safety factor and comfort of the vehicle's personnel.
Perfect match
For a heavy truck, the engine is a crucial critical assembly. The tractor to be tested by the Test Drive Evaluation Studio of the newspaper is equipped with a WD615.95 electronically controlled EGR III engine independently developed by China National Heavy Duty Truck and has a maximum output of 247 kW. This engine is China National Heavy Duty Truck invested a lot of resources independently developed a suitable for China's national conditions of cost-effective products.
Through the use of electrically controlled pre-stroke adjustable high pressure oil pump + 8 Kong Guo III nozzle + electronically controlled EGR (exhaust gas recirculation) + sensor + ECU (electronic control unit) consisting of electronically controlled EGR III engine, high pressure oil pump can automatically adjust the injection In advance, the pressure at the pump end can reach 1400 bar or more. The injector is manufactured in cooperation with Delphi. The pressure capacity is 1800 bar. The injection hole is changed from 7 holes to 8 holes in the national II emission standard, higher injection pressure and better. The atomization optimizes the internal combustion of the engine. According to engine operating conditions, the ECU accurately controls the inter-cooled exhaust gas to return to the fuel chamber in proportion to reduce the generation of nitrogen oxides in the exhaust gas. This is the only electronically controlled EGR engine in China that has so far been approved by the Ministry of Environmental Protection and has been spot checked by industry experts organized by the National Development and Reform Commission.
The Haohe heavy truck equipped with this engine is equipped with an empty/full load switch as standard. When the vehicle is running without load, the switch is set to the “empty†position, which can reduce the fuel consumption of the empty vehicle by 2-4 liters per 100 kilometers.
Matching this electronically controlled EGR III engine is the double countershaft 9 forward gear transmission independently developed by China National Heavy Duty Truck, the HW18709. The double countershaft structure symmetrically arranged in the main box ensures that the radial forces on the input shaft and the gears on the main shaft are balanced with each other, and the bearing capacity is greater. Both sides of the spindle have a floating amount and the main gear floats to ensure that the load is evenly distributed. The main box is shifted with the meshing sleeve. At the same time, the main shaft and the main shaft are floating, which can play a role of positioning and synchronization. The use of meshing sleeves reduces the failure rate of the main box. The sub-box uses a molybdenum-based sprayer, which has the characteristics of high friction and long life. The application of main and auxiliary box interlocking mechanism can effectively protect the auxiliary box synchronizer. The integrated control mechanism on the transmission cover interlocks, self-locking, reverse lock, dual H-valve drive, neutral sensor, reverse sensor structure is ingenious, so that when the driver operates, the gear position is clear, the shift is flexible, and the use is more reliable.
In the actual test driving process, it can obviously feel that the transmission and the engine form a tacit cooperation. Although on the outside, this tractor cab does not have a high top cab but is powerful. Starting from a static state and accelerating to more than 90km/h, the speedup process is quick and smooth, and the shift process is smooth. When shifting, each coupling of the clutch is very smooth, and the pneumatic assist effect is clear. Although there was no semi-trailer during the test drive, the tail run was effectively suppressed at high speeds. This was attributed to the integration of Sinotruk's suspension system with independent intellectual property rights and the latest model structure in the world, making up for the traditional structure. Insufficient properties and related parts and components are easily damaged.
Interpreting high-end value
In the stability test, the Haoheng cab lateral stabilizer plays a very positive role in suppressing the roll of the cab. In the high-speed steering process, the driver and the vehicle members always maintain a stable attitude. It is worth mentioning that the use of German ZF steering gear makes the driver feel like a car. The fatigue of the driver is reduced. Even a female driver who lacks strength can easily control the steering wheel. Sex is improved.
In terms of safety, Haoyin heavy truck cab adopts high-strength steel plate and has better passive safety. In addition, the car is also equipped with automatic brake adjustment arm, driving recorder, ABS anti-lock brake system, TPM tire pressure monitoring system, EBL electronic brake force distribution system, TCS traction control system and other devices. Among them, Hao Hao's electronic safety configuration, even more than a number of mid-size cars, can minimize the occurrence of accidents and improve the vehicle's active safety.
In addition, taking into account the safety of other traffic participants, Hao Hao is equipped with a front anti-drill protection frame to improve the safety factor of the other vehicle in the event of a frontal collision. Side and rear protective devices such as dump trucks also fully comply with regulatory requirements, which can effectively reduce the damage to the occupants of other vehicles from the side and rear of the vehicle when an accident occurs. Fully reflects the corporate social responsibility and the pursuit of maximizing the interests of customers.
In terms of key parts and components, Hao Hao has used a large number of internationally renowned products and the overall reliability has been improved. ZF oil pump, WABCO air compressor and full-vehicle brake valve, Germany VOSS brake interface, MANN+HUMMEL fuel filtration system and other components are all standard.
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