• time;2024-10-15 10:38:55

Recently, the commercial vehicle power sector has welcomed an industry event - the 2024 China International Internal Combustion Engine and Power Equipment Expo (hereinafter referred to as the "Internal Combustion Engine Exhibition").

As leading independent brand manufacturers in China's engine industry, Weichai Power, Guangxi Yuchai, Jiefang Power, Quanchai Power, and Yunnei Power showcased a new look at this internal combustion engine exhibition, with traditional and new energy products appearing simultaneously. In the cutting-edge field of new energy that the remarks focus on, multiple black technology and hardcore strength products have appeared, reflecting the development ideas of traditional power enterprises under the energy transformation and achieving significant results in the field of new energy.

Now, let's take a look at what heavyweight new products these five companies have brought in the field of new energy!

Weichai Power: 2 models, joint venture power battery with BYD unveiled

Weichai Power has brought 9 power products to this internal combustion engine, including 2 new energy commercial vehicle power products, accounting for 22%, namely 1 power battery and 1 fuel cell engine.

Weichai Power Battery

A power battery, a joint venture battery product between Weichai and BYD, used in the fields of heavy-duty trucks, light trucks, buses, and construction machinery. The electricity consumption of the on-site exhibits is 96 kWh. It is reported that Weichai and BYD's joint venture battery products can cover a power of 13-765 kWh and have a battery energy density of ≥ 175Wh/kg; Adopting a brand new LEP blade battery, it does not smoke or ignite when punctured; The working temperature range is from minus 35 degrees Celsius to 65 degrees Celsius, and it can be charged at minus 20 degrees Celsius; It has four core selling points: super safety, super strength, super lifespan, and super environment.

The other is a 110 kW fuel cell engine, mainly used in heavy-duty commercial vehicle scenarios such as sanitation, traction, and road buses. Its rated power is 110 kilowatts, working current is 20-410 (A), working voltage is 280-560 (V), weight is 185 kilograms, maximum efficiency is 61.2%, lifespan is 30000 hours, and mass power density is 605W/kg. The fuel cell engine adopts topology lightweight design and subsystem modular development, with a mass power density of 605kg/kg; By adopting intelligent thermal management technology, it is possible to achieve high-precision control of fast dynamic variable load conditions and steady-state conditions.

Weichai 110 kW fuel cell engine

Yuchai Core Blue: 4 models, covering three major technological routes: pure electric, hybrid, and fuel cell

Yuchai brought 13 heavyweight products at this internal combustion engine exhibition, including 4 new energy commercial vehicle power systems, accounting for about 31%, namely 1 pure electric box drive system, 1 hybrid power system, and 2 commercial vehicle fuel cell power systems.

Specifically, the pure electric box drive system exhibited by Yuchai, model YCET280-3421, is the highest specific power pure electric heavy-duty truck drive system in China. The H-PIN high-speed flat wire water-cooled motor it is equipped with adopts an efficient flat wire motor design, with tightly arranged windings, small volume, and strong wire heat dissipation ability; The rated power of the motor is 280 kW, with a peak power of 430 kW, which is 20 kW higher than its competitors; The maximum efficiency of the motor is 96.44%, and the motor efficiency reaches the double 90 level. The comprehensive power consumption under working conditions is more than 3% lower than that of competitors; It has high adaptability, adopts industry standard interfaces, and can adapt to mainstream transmission products in the market. The power system is mainly equipped with 31-49 ton heavy-duty trucks (tractor, dump truck, cement mixer truck, etc.).

Yuchai pure electric box driving power system (280 kW)

Yuchai hybrid power system, product model YCPD230-S0422, system weight 805kg, mainly equipped with 9-10 meter highway buses, 16-18 ton trucks, refrigerated trucks, dump trucks, garbage compactors, etc. The hybrid power system adopts a high-speed permanent magnet synchronous motor with a maximum speed of ≥ 15000rpm; Creatively proposed the eCVT hybrid configuration consisting of an engine, dual motors, and dual planetary gears, which is the industry's first; Adopting three sets of shafts, dual motor parallel and globally optimal lightweight design, with high integration and compact structure; Highly coupled electromechanical performance, with high fuel efficiency; In terms of power, the engine and dual motor torque compensation control are adopted to achieve no power interruption and ensure acceleration performance; In addition, it also has the characteristics of multifunctionality and high adaptability, with modular functions and multiple typical working mode switches, such as pure electric drive, hybrid drive, engine independent drive, parking power generation, etc.

Yuchai hybrid power system

Two commercial vehicle fuel cell systems, one with a rated power of 60 kW and the other with a rated power of 125 kW. In terms of core technology, fully independent intellectual property rights graphite plate stacks are adopted, and the best performance stack intelligence is achieved through self-designed membrane electrodes and self-designed graphite bipolar plates. Among them, the 60 kW fuel cell system has a rated efficiency of over 47% and can achieve a range of over 400 kilometers in the 8.5-10.5 meter bus application scenario; A 125 kW fuel cell system, suitable for traction, cargo, dump trucks, construction machinery, etc., with a rated efficiency of ≥ 45% and a range of 500 kilometers or more.

Yuchai 125 kW commercial vehicle fuel cell system

Yuchai 60 kW commercial vehicle fuel cell system

As can be seen, whether it is the pure electric heavy-duty truck drive system, hybrid power system, or fuel cell system, Yuchai's exhibits this time are all very powerful. Among them, Yuchai pure electric box drive system is the highest specific power pure electric heavy-duty truck drive system in China; The Yuchai hybrid system creatively proposes an eCVT hybrid configuration consisting of an engine, dual motors, and dual planetary exhausts; The Yuchai 125 kW fuel cell system has the highest rated power among the fuel cell systems at this exhibition.

Liberation Power: 3 models, including 2 electric drive axles and 1 P2 hybrid powertrain

Jiefang Power brought 8 exhibits, including 3 new energy products, accounting for 37.5%, namely 2 electric drive axles and 1 P2 hybrid powertrain.

Specifically, the Liberation Medium sized Electric Drive Bridge, with the product model CAR13E290S2, can be adapted to various vehicle models such as medium-sized dedicated and cargo, 6 × 4 heavy-duty traction, etc. It adopts a dual motor parallel configuration and has the advantages of advanced configuration, high reliability, high safety, high efficiency and energy saving, high quality, and low maintenance. Its axle load is 13 tons, output torque is 32041 Newton meters, speed ratio is 46.312/38.01/18.155, motor power is 65/140 kW × 2, B10 life is 800000 kilometers. It adopts a dual motor parallel configuration, with a braking energy recovery rate of 100%, low power consumption, long driving range, and can provide users with a subjective experience of better power and comfort.

Liberate medium-sized electric drive bridge

Jiefang Light Electric Drive Bridge is the latest new energy vehicle bridge launched by Jiefang, mainly targeting the light urban logistics market. It can meet the demand of pure electric, fuel cell, and extended range hybrid light vehicles with a full load of 6.5-8.5 tons. It adopts a coaxial planetary gear system configuration, with the best comprehensive performance, the most compact structure, completely releasing the space inside the frame, and has good trial fit and overall smoothness, making it the optimal configuration for light-duty electric drive axles. The rated/peak power of the motor is 65/140 kilowatts, with a maximum output torque of 6000 Newton meters, suitable for various vehicle layouts, and can meet the load requirements of the entire vehicle ranging from 6.5 to 8.5 tons. In addition, Jiefang Light Electric Drive Bridge has the advantages of lightweight and low cost.

Liberation Light Electric Drive Bridge

The CA4DT2 P2 hybrid powertrain is a new generation hybrid product launched by the Jiefang Powertrain Division for the light truck market. It has the characteristics of fuel efficiency, reliability, strong power, compact structure, and affordable price. The efficient areas of the engine and motor are matched with each other, and the tested regulatory standard cycle fuel saving rate exceeds 15%. The fuel saving rate of logistics between mountainous areas and cities reaches over 28%, saving users worry and money. The power output is strong, and the newly developed hybrid specific engine combined with the high-efficiency P2 motor developed for the light truck market achieves the goal of accelerating from 0 to 70 kilometers per hour by more than 35%.

Liberate CA4DT2 P2 hybrid powertrain configuration

Yunnei Power: 1 fuel cell system and 1 hybrid powertrain

Yunnei Power brought four star products at this exhibition, including two new energy power systems, accounting for 50%, namely the TWLQ-120 automotive fuel cell system and one Derun 25/30 hybrid powertrain.

Among them, the vehicle fuel cell system TWLQ-120 is a product of Yunnan Heyuan New Energy Power Technology Co., Ltd., a subsidiary of Yunnei Power Holdings. It has a rated power of 120 kilowatts, a maximum efficiency of 60%, and can start at low temperatures of minus 30 degrees Celsius. This product is developed based on a water-cooled/graphite electrode plate platform, covering 30-240 kilowatts, suitable for various types of urban buses/coaches, light, medium, heavy cargo, logistics vehicles, and tractors, etc. It has advantages such as super environmental protection, strong adaptability, high efficiency, and super reliability.

Yunnei Power 120kW Automotive Fuel Cell System

The Yunnei Derun 25/30 hybrid powertrain meets the requirements of the fourth stage fuel consumption regulations and has a fuel saving rate of up to 30% compared to traditional vehicles of the same type; The engine operates in an economical range without idle conditions, reducing harmful emissions from exhaust gases; Different battery levels can be selected to meet both HEV and PHEV routes; In addition, it also has product advantages such as no power interruption, infinite speed change, and automatic transmission. When matched with D20 engine, it is suitable for 4.5-8-ton urban light trucks and can achieve HEV and PHEV; When matched with D25Pro engine, it is suitable for 8-12 ton medium trucks, construction vehicles/sanitation vehicles/dump trucks, etc.

Yunnei Derun 25/30 hybrid powertrain

Quanchai Power: 2 models, innovative membrane electrode products achieve import substitution

At this internal combustion engine exhibition, Quanchai Power brought 6 diesel engines and 2 new energy products, with new energy accounting for 25%. Among them, the new energy products are DHT hybrid gearbox and membrane electrode series products.

Among them, DHT hybrid transmissions have diverse application scenarios, and in the transportation of goods within and between cities, they further expand their fuel saving advantages on the basis of pure electric fuel saving; Compared with traditional 6MT drive, the comprehensive fuel consumption and fuel saving rate reaches over 30%; Dual motor drive can reduce power attenuation with limited engine gears and no additional motor cost; Compared with its competitors, the three speed DHT of Quanchai has significantly improved power performance; The comprehensive efficiency of the 4.5-ton light truck CHTC-LT cycle DHT system can reach 89.9%.

Quanchai DHT hybrid gearbox

Surprisingly, in the field of hydrogen fuel cell technology, Quanchai Power has introduced a series of membrane electrode products. As is well known, membrane electrodes are the core components of hydrogen fuel cells, known as the "heart" of hydrogen fuel cells. The membrane electrode products brought by Quanchai Power include proton membranes loaded with catalysts and 7-layer membrane electrode products, all of which are independently developed and produced by Yuanjun Hydrogen Energy, a subsidiary of Quanchai Power Holdings. The First Commercial Vehicle Network learned on site that the all diesel power membrane electrode products have high competitiveness and can achieve import substitution. Recently, they have received orders of tens of thousands of square meters from customers.

Quanchai membrane electrode products

Conclusion

In recent years, under the impetus of energy reform and policy promotion, China's commercial vehicle industry is accelerating the process of new energy, presenting a trend of multiple technological routes such as pure electric, hybrid power, and fuel cells driving development. For traditional power enterprises, it is both an opportunity and a challenge. From the appearance of high-tech achievements at this year's internal combustion engine exhibition, we can see that various enterprises are well prepared in the new energy track, constantly innovating and improving, and are using leading technological levels to make China's new energy commercial vehicles more reliable, economical, efficient, safe and intelligent, accelerating the arrival of the era of green and low-carbon transportation.