Double carbon is the abbreviation of carbon peak and carbon neutralization.。As early as 2020，China has clearly put forward the goal of carbon peak in 2030 and carbon neutrality in 2060.。October 2021，The CPC Central Committee、Issued by the State Council《Opinions on Perfecting, Accurately and Comprehensively Implementing the New Development Concept and Doing a Good Job in Carbon Peak and Carbon Neutralization》，Double carbon rises to“National Strategy”。2022，《Seeking truth》An important magazine article《Correctly Understand and Grasp Major Theoretical and Practical Issues in China's Development》Mention：Realization“Double Carbon”Aim，No one else asked us to do it.，It's what we have to do.。

In this context，And“Double Carbon”The construction machinery industry with high correlation naturally receives more attention.。Low-carbon transformation、Energy saving and emission reduction，Has become the construction machinery industry“Just need”。From December 1, 2021，Off-road mobile machinery“Guo Si”Emission standards，It has been first implemented in Beijing.；May 1, 2022，Shanghai、Simultaneous implementation in Shenzhen；December 1, 2022，“Guo Si”Standards will be popularized throughout the country.。

The Big Goal of Double Carbon，In addition, the emission standards of the industry have been upgraded.，As a direct result,：Construction machinery industry is facing new challenges.，Of course，From the perspective of development，This is also a rare opportunity for high-quality development.。Keen Construction Machinery Enterprise、Practitioner，I've already started，Whether the original motivation is active or passive。Various construction machinery enterprises have started“Eight immortals crossing the sea、Each shows his own magic”。

Electric slow，Emissions upgrade

It is different from the electrification route in full swing in the automotive industry.，Pure Electric Road of Construction Machinery，It seems a little“Thunder and heavy rain are small.”，Although some of them have been applied in real vehicles，But reliability、Durability and practical application feeling，Lack of long-term demonstration。That is to say，Want to go straight from the traditional fuel-powered way，“One size fits all”To electrification，At this stage, it is not in line with the actual situation.。Then along with the non-road construction machinery“Guo Si”Implementation of emission standards，All construction machinery enterprises，Still focused on emissions upgrades，They all showed a positive attitude.。

According to the standard，From China III to China IV，Non-road mobile machinery with different power ranges adopt different emission control technologies。37kW≤P<75kWThe main technical route adopted in the power section is to install a particulate trap.（DPF），75 kW≤P<130 kWThe main technical route of the power section is to install an oxidation catalytic converter.（DOC）+Particle trap（DPF），130 kW≤P<560 kWThe main technical route of the power section is to install an oxidation catalytic converter.（DOC）+Particle trap（DPF）+Selective catalytic reduction device（SCR）。37kWDiesel engines in the following power ranges，Technically, the intake air needs to be further optimized、Fuel injection system。Compare“Kunisan”Emission standards，“Guo Si”NOx emissions can be reduced by 13 percent%-45%，Particulate emissions can be reduced by 50 percent%-94%。

Take the lead，Strive to be the first

Look at it objectively，At“Guo Si”Emission technology，Foreign brands occupy a certain advantage。For example, the first foreign brand to pass the environmental protection approval of the Fourth National Emission Standard——Modern Doosan Construction Machinery，The performance is quite bright.。As one of the first echelon members of the construction machinery industry，Modern Doosan Construction Machinery Faces the Fourth National Emission Standard，No passivity“Wait for the answer”，It's initiative“Solve the equation”。

Use a uniqueULFC(Ultra Low Fuel Consumption) Combustion technology and aftertreatment(DPF+SCR)System，Further improve performance and reduce fuel consumption。Based on this technology，Hyundai Doosan Construction Machinery as early as the beginning of this year，Just before other brands.，First releasedDX150W-10、DX60W ECO、DX75-10、DX60 ACE-10、DX60E-10 and many other national four models。This is also the first batch in the market.“Guo Si”Excavator products with emission standards。Compared with the previous three products，The new machine of the fourth country can be greatly reduced.NOx(Nitrogen oxides)、HC(Hydrocarbon)、PM(Carbon、Ash and other particles)And other harmful substances emissions，Take the lead in the industry。

Be able to take the lead nearly a year before the full implementation of the Fourth National Plan.，On the one hand，It is because modern Doosan construction machinery has long been in the European and American markets with stringent emission standards.，Accumulated rich experience；On the other hand，As early as early 2021，Modern Doosan Construction Machinery has carried out the field operation test of the four models of the whole country.，Experience the cold and heat、Spanning spring, summer, autumn and winter，The longest test time of a single machine is more than 4000 hours.。It is precisely because of these strength escort.，Finally, the modern Doosan was realized.“Guo Si”Leading technology of products、The quality is reliable。

The strong wind knows the strong grass，Fire is real gold.。A series“Guo Si”The launch of the product，It not only shows the advanced level of modern Doushan construction machinery in the field of low carbon technology of excavators.，It also highlights its strong R & D strength.。Believe in the future，“Light”Modern Doosan Construction Machinery will invest more in scientific and technological research and development.，With more energy-saving and low-carbon“Green”Products，For“Double Carbon”Make unremitting efforts to achieve the goal！