The internal combustion engine products are the products with the most direct energy-saving and emission-reduction effects and the greatest development potential for energy-saving emission reduction. They are also intermediate products for automobiles, ships, diesel locomotives, and generator sets. This determines the main role of the internal combustion engine industry in energy conservation and emission reduction. As a leading enterprise in the internal combustion engine industry, in recent years, Weichai has actively developed green production, focused on the green energy saving of the manufacturing process, and truly achieved “ green green ”.

Recycling green production

Weichai built a wastewater recycling system with a daily treatment capacity of 4,400 tons in the old factory area, and all industrial wastewater enters the sewage station and realizes a “closed-circuit cycle”. The system recycles more than 100 tons of waste oil annually, reduces 1.2 million tons of industrial wastewater discharge annually, recycles more than 1.5 million tons of annual water reuse, and saves 1.5 million tons of water annually.

In addition, in the industrial park, Weichai built a wastewater recycling and reuse system with a daily processing capacity of 1,000 tons. The advanced process of pretreatment of the quality and reintegration treatment was used to recycle 360,000 tons of reclaimed water and 360,000 tons of fresh water. .

The treated and reused Zhongshui is widely used in the production and daily life of trial-cycle water, production process water, toilet flushing water, and fire-fighting water for large-series diesel engines, which reduces fresh water consumption and improves the environment. Reduced pollution.

It is understood that Weichai attaches great importance to the construction of energy-saving and emission-reduction infrastructure for the newly established four industrial parks. Taking the new foundry industrial park as an example, the low-energy and energy-saving production facilities are fully selected in the process design, and the waste heat utilization technology is adopted. The high-temperature flue gas waste heat utilization system and steam condensate recovery system are installed in the cupola to implement waste heat and residual energy. Recycling, effectively reducing the park's heating steam and natural gas consumption.

Among them, 80 tons of hot air oxygen-enriched cupolas, castings with an overall scrap rate of 1.8% or less, 220 tons of coke per ton of castings, 47,000 tons of coke per year than the domestic average, and secondary combustion of flue gas through waste heat utilization technology. The temperature of molten iron reached 1500~1550°C, and the melting efficiency increased by 45%. Through the recycling technology of old sand, the regeneration rate of waste sand reached more than 85%. With the fully sealed bag dust removal technology, the dust removal rate reached 99.8%.

In the processing industrial park, Weichai has attached great importance to the basic construction of energy-saving and emission-reduction and adopted low-energy-consumption and energy-saving equipment to ensure that the energy use of the new park is optimal.

Eliminating outdated, high-energy-consuming technologies and equipment, actively implementing energy-saving technological reforms, and paying attention to the new project's energy-saving and emission-reduction infrastructure are all means by which Weichai strengthens self-discipline and realizes green production.

New energy helps energy-saving and emission reduction

In recent years, the development of new energy sources is a major task for Weichai in implementing green environmental protection. In 2012, Weichai made substantial progress in building a low-carbon, environmentally-friendly, high-efficiency industrial chain for new energy power. The engine-motor-transmission green industrial chain has provided new energy vehicles with strong power for system, high-efficiency, energy-saving, and environmental protection.

In 2012, Weichai Power introduced the new energy “WN20” powertrain, which adopts a low-carbon and energy-saving modular design, which enables the vehicle to select and distribute mixed 4-12 liters of diesel or natural gas to be used with minimal modifications. Fourth, the national five engine and 5 ~ 16 block automatic transmission system assembly. The assembly is applied to buses of 10 to 12 meters and its fuel saving rate can reach 30%. Taking this as a sign, Weichai has made substantial progress in building a new energy power drive for a low-carbon, energy-saving, and emission-reducing high-efficiency industrial chain.

Weichai New Energy Technology Center has developed a series of core technologies featuring electric power and electronic control through independent innovation and established a common technology platform for hybrid powertrains for commercial vehicles and construction machinery. Through the development of the hybrid powertrain assembly, it has been applied to the fields of hybrid power loaders, excavators, bulldozers, large passenger cars, heavy trucks, etc., enabling China's commercial hybrid power technology to reach the international advanced level and achieve industrialization.

It is understood that after mass production of hybrid products is achieved, within the scope of technical application, fuel economy can be improved by more than 30% and emissions can be reduced by more than 30%. The power system is mainly applied to 10 to 12 meters of buses. According to tests conducted by China’s authoritative inspection department, buses assembled with Weichai New Energy’s electric powertrains can be directly reduced by driving 400,000 kilometers over 8 years under the conditions of GB/T19754-2005 typical urban public transport cycling in China. Carbon dioxide emissions of 80 tons, saving rate of 30%.

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