On March 18, 2023, the 2023 National Agricultural Machinery Exhibition was grandly opened in Zhumadian. Weichai Power made a grand debut with the tractor direct pump power assembly, tractor CVT assembly and a full range of harvesting machinery hydraulic power assembly, demonstrating Weichai's strong R&D strength and outstanding R&D achievements. The three major power assemblies will be respectively Empowering the farming and harvesting links, shaping the soul of my country's agricultural equipment, and promoting the high-quality development of the agricultural machinery industry.

Tractor Powertrain Drives Agriculture

In recent years, the country has paid more and more attention to grain cultivation and farmland protection, and the concept of users has gradually changed from focusing on price to focusing on value. The market urgently needs high-quality tractor products with higher efficiency, lower fuel consumption and failure rate. However, due to the mismatch between the engine speed and the number of teeth of the gear pump, the hydraulic failure rate of tractors in my country remains high, which has become a bottleneck for the high-quality development of tractors in our country.

Weichai's tractor direct-connected pump powertrain and CVT powertrain are subversive products created for high-end tractors, and they are also Weichai's tribute to hard-working workers.

The powertrain of the tractor directly connected to the pump is composed of a Weichai engine and a Weichai transmission control lift pump, which can effectively reduce the hydraulic oil temperature, and at the same time increase the efficiency of the hydraulic system by 10%, reduce the failure rate of the tractor by 90%, and users can also enjoy the engine + One-stop service for hydraulic parts.

The tractor direct-connected pump powertrain unveiled this time includes five products including WP3.2, WP3.6N, WP4.1N, WP7H, and WP7. The fuel system adopts an electronically controlled high-pressure common rail system, with high injection pressure and low-speed torque. , good atomization, and excellent economy; the electronic control system is an independent ECU control system, the function is developed for the working conditions of agricultural machinery, and it has strong adaptability; the air intake system is equipped with a three-stage 93 sand filter (dry type) independently developed by Weichai as standard. Filtration is more efficient and adapts to harsh working environments. The air intake is more sufficient, and the combustion is more efficient; the combustion pre-injection technology and high-precision meshing transmission train are adopted, and the engine vibration and noise are low.

Among them, the WP3.2 powertrain integrates power, economy, and comfort. The maximum torque of the engine can reach 280 Nm, and the power reserve is 10% higher than that of competing products. It can fully cover tractors of all power stages in dry fields;

WP3.6N powertrain torque increases by 9%-20%, fuel consumption decreases by 3%, and vibration decreases by 59%, which have been fully verified in the market;

WP4.1N powertrain covers 80-120 horsepower, adopts gantry body, integral cylinder head, forged steel crankshaft and high-strength piston, and has accumulated more than 15,000 hours of bench durability tests, which can effectively guarantee the high reliability of the engine;

The WP7H powertrain adopts a modular design, with compact structure, strong adaptability, high cost performance and large space for power improvement;

The success rate of the WP7 powertrain covers 220-280 horsepower. Drawing on the experience of powertrains such as excavators and harvesters, the hydraulic powertrain is expanded in the tractor industry. The WP7 powertrain gives full play to the advantages of the large displacement of the WP7 engine. With the speed ratio adjustment of the gearbox, the engine speed is reduced to 2000rpm, creating a differentiated advantage in economy and comfort;

Weichai high-horsepower tractor CVT assembly system adopts Weichai engine and German Linde hydraulic technology under Weichai, which integrates high efficiency, comfort and intelligence, and fills the gap in China's high-end agricultural equipment continuously variable transmission (CVT). Compared with traditional models, the operating efficiency of the CVT assembly of Weichai high-horsepower tractors is increased by 15%, the fuel consumption is 10% lower, the noise is greatly reduced, and the vehicle speed can be precisely controlled to meet the needs of unmanned driving and high-precision operations.

Harvest mechanical powertrain opens a new era

Grain harvesting is an important part of consolidating the foundation of food security. Weichai's harvesting machinery powertrain solves the pain points of low transmission efficiency, high failure rate, and high fuel consumption caused by the belt drive of the walking pump, ensuring that the grain particles are returned to the warehouse, and at the same time assisting the machine operator to start a new era of harvesting.

Among the four harvesting machinery powertrains exhibited by Weichai, the most eye-catching one is the WP3.6N harvester hydraulic powertrain that debuted for the first time.

The WP3.6N power assembly is a high-quality product precisely designed and developed for the rice machine industry. It changes the angular contact shaft of the continuously variable transmission into a cylindrical roller bearing, which increases the bearing capacity by 120%, and matches the hydraulic oil temperature at The optimum temperature is 85°C, the failure rate is reduced by 90%, while the fuel consumption can be reduced by 5%, the noise by 8%, and the vibration by 12%. The operator does not lose speed during the harvesting operation, the harvesting efficiency is high, and the passability is good. The electromagnetic reversing fan can effectively remove the sundries on the surface of the radiator, ensuring uninterrupted harvesting operation of the machine operator, and helping the rice cross-region operation machine operator embark on the "shoes" of harvest;

The hydraulic powertrain of WP4.6N harvester adopts gantry body, integral cylinder head, forged steel crankshaft and high-strength piston. It has accumulated more than 15,000 hours of bench durability tests, which can effectively guarantee the high reliability of the engine. In addition, it also realizes the world's first unified ECU control strategy, which effectively improves the responsiveness and fuel economy of the product;

The WP6 harvester hydraulic power assembly is suitable for 4-5 row corn harvesters, with compact structure, high reliability, strong power and good economy. It can reduce the operating intensity of the operator, improve the operating efficiency, reduce fuel consumption, and greatly improve the stability of the harvesting machinery;

The hydraulic powertrain of the WP7 harvester has the advantages of large displacement, low speed, high-speed ratio, 10% faster transition, and 10% lower fuel consumption.

General Secretary Xi Jinping emphasized during this year's two sessions: "Accelerating the realization of high-level scientific and technological self-reliance and self-improvement is the only way to promote high-quality development." Quality is the pursuit".

Weichai's three powertrains of three countries and four powertrains not only inject strong kinetic energy into the high-quality development of my country's agricultural equipment, but also Weichai's tribute to hard work and harvest.Editor/Ma Xue