In the field of passenger vehicles, Great Wall Motor has always been known as a “technology giant”. Based on its in-depth experience in the market of hardcore off-road and pickup models, Great Wall Motor, with technology as its foundation, has successively created industry benchmark models such as the Tank 500 and the Great Wall Cannon. In the new energy era, Great Wall has further introduced the Hi4 hybrid technology system, empowering a more fuel-efficient, longer-range, and safer vehicle experience with cutting-edge technology.
In the field of commercial vehicles represented by heavy trucks, Great Wall Motor has also been very active in recent years. On March 26th, Great Wall Motor held the Hi4-G Technology Co-creation Launch Conference of Great Wall Heavy Trucks in Baoding, Hebei. At this launch conference, the Great Wall Hi4-G super intelligent hybrid system made a stunning appearance, and the Great Wall Hi4-G hybrid heavy truck equipped with this system also came into our sight. In the CHTC-TT (China Semi-trailer Tractor Train Driving Conditions) test, the fuel consumption per 100 kilometers of the Great Wall Hi4-G hybrid heavy truck is only 29.7 liters, making it the first heavy truck model in the industry with a fuel consumption under 30L per 100 kilometers under working conditions. Next, let’s talk about this vehicle in detail.
P2+P2.5 Hybrid Architecture, the World’s First Hi4-G Heavy Truck Super Intelligent Hybrid System
The secret to the fuel efficiency of the Great Wall Hi4-G hybrid heavy truck lies first in its world’s first Hi4-G heavy truck super intelligent hybrid system. This system is composed of components such as the Cummins 13L diesel engine, P2 and P2.5 motors, and an 8-speed DHT transmission, achieving an intelligent hybrid mode of “three engines, eight gears, and ten modes”. The three engines refer to the Foton Cummins 13-liter diesel engine, P2 and P2.5 motors in the system, and the eight gears refer to the 8-speed DHT transmission in the system. Under the overall coordination of the nine-in-one controller, this power system can dynamically switch between series, parallel, and combined working modes, providing an intelligent and fuel-efficient power experience with “ten modes”.
In terms of architecture, the Great Wall Hi4-G heavy truck super intelligent hybrid system is a hybrid system mainly relying on fuel and supplemented by electricity. The core of this system is the Foton Cummins X13 inline six-cylinder diesel engine, which outputs 560 horsepower and 2,600 N·m of torque. It is a well-tested model in the domestic heavy truck industry. The matched P2 and P2.5 motors together provide a peak power output of 360kW. With the “strong combination” of the diesel engine and the electric motors, the comprehensive power output of the Great Wall Hi4-G heavy truck super intelligent hybrid system reaches 1,050 horsepower, which is an extremely powerful output that conventional models in the industry cannot match.
The excellent performance of the Great Wall Hi4-G heavy truck super intelligent hybrid system is inseparable from the world’s first 8-speed DHT transmission for heavy trucks. This transmission adopts a design of an offset intermediate shaft and dual-motor coupling, realizing the P2+P2.5 hybrid architecture. Specifically, the P2 motor is located between the engine and the transmission, while the P2.5 motor is integrated inside the transmission. The advanced hybrid architecture and extremely high integration degree fully demonstrate the strong technical strength of Great Wall Commercial Vehicles. With the complementarity of the P2+P2.5 motors, Great Wall has broken the dilemma of homogenization in the P2 architecture of hybrid heavy trucks and further brought more outstanding fuel-saving performance.
The Great Wall Hi4-G heavy truck super intelligent hybrid system also includes a 12.9kWh high-rate power battery. Although its battery capacity may not seem high, its charging and discharging performance reaches an astonishing 30C, which can cope with instantaneous high-power input and output, and has better performance in conditions such as full acceleration and kinetic energy recovery. With the assistance of the P2+P2.5 motors, the engine can operate at a more stable economic speed, avoiding frequent speed changes and long-term high-speed operation. Moreover, the motors can recover kinetic energy when the vehicle decelerates or goes downhill. This not only helps to improve safety but also reduces the wear and tear of the braking system and improves the overall energy utilization efficiency, achieving a comprehensive performance of low energy consumption and high efficiency.
At the launch conference, Wei Jianjun, Chairman of Great Wall Motor, also announced that a strategic cooperation agreement was signed with Cummins, and the plan is to jointly develop a hybrid-dedicated engine. It is believed that in the future, the Great Wall Hi4-G heavy truck super intelligent hybrid system will achieve even higher performance and lower fuel consumption.
In the current technical state, the fuel consumption of the Great Wall Hi4-G hybrid heavy truck under the standard load condition on the plain from Zhengzhou to Guangzhou is 25.7 liters per 100 kilometers, the fuel consumption under the express delivery condition on the plain from Linyi to Shanghai is 19.9 liters per 100 kilometers, the fuel consumption under the cold chain condition in the mountainous area from Kunming to Shanghai is 25.1 liters per 100 kilometers, and the fuel consumption under the composite condition from Hangzhou to Chongqing is 25.7 liters per 100 kilometers. Compared with similar products in the industry, the low fuel consumption of the Great Wall Hi4-G hybrid heavy truck can be described as a “dimension-reducing strike”. For a long time, low fuel consumption has been the core advantage of imported heavy trucks. However, with the support of the Hi4-G heavy truck super intelligent hybrid system, the Great Wall Hi4-G hybrid heavy truck directly challenges the traditional status of imported heavy trucks and is expected to make further progress in the global commercial vehicle market.
The Exterior Design with the Concept of “Round Sky and Square Earth”, Pursuing Efficiency to the End
In addition to the world’s first power system, the Great Wall Hi4-G hybrid heavy truck also adopts many ingenious designs to improve efficiency and the driver’s experience as much as possible, while maintaining a high level of recognition. First of all, its body contour: The Great Wall Hi4-G hybrid heavy truck is based on the concept of “round sky and square earth”. The transition between the roof and each vertical surface is smooth, which helps to reduce air resistance and at the same time increases the interior space. The lower part has a square shape, which helps to lower the visual center of gravity and creates a sense of stability and strength.
The openings inside the air intake grille also adopt a rounded rectangle design, echoing the “round sky and square earth” shape of the whole vehicle. The middle of the bumper is the license plate frame, and the left and right sides are the recessed pedal areas, which are convenient for the driver to step on. In order to reduce air resistance, the lower end and the bottom of the bumper of the Great Wall Hi4-G hybrid heavy truck are both designed with flow guiding structures to guide the air.
The headlights are located on the left and right of the front face, integrating with the surface of the vehicle body, looking exquisite and delicate. The internal light source design also echoes the “round sky and square earth” shape of the whole vehicle. The daytime running lights/turn signals outline the outer side and the top of the headlights, making it highly recognizable.
On the left and right of the front cover, there are neatly arranged “nebula” – shaped grooves, connecting the front face and the left and right sides of the vehicle body. The existence of these small grooves is not for decorative purposes, but refers to the drag reduction methods of objects such as golf balls: The pits on their surfaces can form a turbulent layer, reducing viscous resistance and pressure difference resistance, which helps to improve the aerodynamic efficiency of the vehicle.
The Changzheng logo is located at the top of the middle of the front cover. Now, Changzheng has become one of the members of the Great Wall Motor family.
Aiming at the needs of long-distance trunk line transportation, the Great Wall Hi4-G hybrid heavy truck is equipped with a high-roof cab with a sleeper, providing a better living space inside the vehicle. It is not difficult to find from the side view that the inclination angle of the A-pillar of the vehicle seems to be larger. That’s right! The A-pillar of the Great Wall Hi4-G hybrid heavy truck adopts a design with a golden angle of 13.5 degrees. Combined with the smooth and rounded roof, it can not only reduce air resistance but also bring users a driving and riding experience with a large space and low wind resistance.
The GWM decal on the roof represents GreatWall Motors, and the small characters at the back represent the Chinese word “R&D” in English.
The rearview mirror adopts a split design with the main mirror on the top and the wide-angle mirror on the bottom. The corresponding mirror arms are close to the outer side of the vehicle body, avoiding coupling with the A-pillar to form a larger blind spot, which helps to improve the driving vision.
The vehicle adopts a 6×4 driving form, and a drive axle with a small gear ratio of 2.533 is optional.
The rear axle is limited by a V-shaped thrust rod.
On the left side of the chassis is a large-sized fuel tank.
On the right side of the chassis are high-value devices such as the exhaust gas after-treatment system and the battery, with a metal protection on the outside.
Above the chassis, there are also designed lightweight anti-skid aluminum alloy pedals, which are convenient for the driver to connect cables.
Technology Empowers the Comfortable Interior, Leading the Industry
Based on years of practical experience in the field of passenger vehicles, the interior of the Great Wall Hi4-G hybrid heavy truck also incorporates a lot of cutting-edge technology and humanized concepts. Next, let’s enter the vehicle to experience it. The vehicle’s boarding pedal has a large area, with hollowing and anti-skid protrusions. Combined with the design that shrinks successively from bottom to top, it is like a step, making it more convenient to board the vehicle.
The sense of atmosphere is an advantage of the interior of the Great Wall Hi4-G hybrid heavy truck. The interior is no longer limited to the traditional “industrial style” color scheme, but uses multi-color stitching, reflecting a high-end feeling. The seats are covered with brown surface materials, a combination of leather and fabric, which not only provides comfort but also a sense of luxury.
Sitting in the driver’s seat, the multimedia interior composed of a “dual-screen” comes into view. The full-color liquid crystal instrument panel displays various information clearly in front of the driver. The air vents on the left and right sides are shaped like aircraft turbofan engines, adding more dynamic charm.
The design of the four-spoke steering wheel is somewhat reminiscent of the Great Wall Tank off-road vehicles. The various multifunctional buttons on it are convenient for the driver to control various driving functions, and the hands do not need to leave the steering wheel, ensuring driving safety.
There is also a HUD system designed at the front of the main driver, which projects information such as the vehicle speed and speed limit to the front, which is a rare configuration in the heavy truck industry. With the support of the HUD system, the driver does not need to frequently look down to check the vehicle information while driving, and can focus on the road ahead, which helps to improve driving safety.
The gear shifting adopts the form of a column shifter, designed on the lever on the right side of the steering column.
The operation related to the electronic parking brake is designed on the right side of the main driver’s seat.
There is a hidden small tableboard designed in front of the co-driver.
Under the bed is a large-sized driving refrigerator.
There is a 220V power interface in the vehicle, and the corresponding power is 1KW, which is sufficient for boiling water and cooking.
In terms of the sleeper, the Great Wall Hi4-G hybrid heavy truck also performs quite well. It has a relatively good width. Combined with a comfortable mattress, it can provide a comfortable rest for the driver. There is an observation window and a sunshade curtain on the rear wall of the cab, which combines ease of use and comfort.
Conclusion
The Great Wall Hi4-G hybrid heavy truck, with its world’s first Hi4-G super intelligent hybrid system, has achieved a perfect combination of excellent fuel-saving performance and powerful power. Under various complex working conditions, its fuel consumption performance is significantly better than that of similar products in the industry, demonstrating the advantage of a “dimension-reducing strike”. The Hi4-G hybrid system, through the intelligent switching of “three engines, eight gears, and ten modes” and the efficient P2+P2.5 motor architecture, provides the vehicle with ultra-low fuel consumption and a super-powerful output of 1,050 horsepower. As Wei Jianjun, Chairman of Great Wall Motor, said: The original intention of Great Wall Heavy Trucks is to help truck drivers make money. The birth of the Great Wall Hi4-G hybrid heavy truck has set a new fuel-saving benchmark for the commercial vehicle industry and also provided a new solution for the energy conservation and emission reduction of future commercial vehicles.
原创文章，作者：ctinsa，如若转载，请注明出处：https://www.ctinsa.com/truew/5414
