December 1, 2022，The fourth phase of emission standards for off-road mobile machinery has been formally implemented nationwide.，This follows the implementation in Beijing on December 1 last year.、It will be implemented in Shanghai and Shenzhen on May 1 this year.，The last landing time node。It also means，“Kunisan”Become the past tense，There will be a total ban on production in the future、560 imports and sales that do not meet the requirements of the Fourth National Standard kWFollowing（Including 560 kW）Non-road diesel mobile machinery and diesel engines。

Full implementation of the Fourth National Standard，It is a major event in the construction machinery industry.，It is also the general trend。Construction machinery enterprises have responded.，Products that meet the Fourth National Emission Standard have been introduced one after another.。Among them, modern Doosan construction machinery has entered the Chinese market for 28 years.，Become the first foreign-funded construction machinery brand approved by the Fourth National Environmental Protection Standard，Before the full implementation of the Fourth National Standard，The whole series of products will be upgraded one after another.，Win with users in the fourth era of the country。

More efficient、More fuel-efficient upgrades, not just emissions

Hyundai Doosan's National IV New Machine，Not only does it fully meet the Fourth National Standard in terms of emissions,，It is also an all-round upgrade of the whole machine.，The operation efficiency of that new machine is high、More fuel efficient，Help customers reap higher benefits。

Only by paying more attention to fuel economyDX380-Take 10 as an example，It uses the famous Scania new national four engine.，Power up to 214kW，While ensuring strong power，Fuel economy is also more prominent.，EquippedFEHHydraulic system adopts electric control signal，Precise control of main pump and main control valve，Effectively reduce the energy loss of the hydraulic system，Achieve a significant reduction in fuel consumption，Compared with the previous model, it can effectively save fuel 7%！It is worth mentioning that，DX380-10 No reduction in operating efficiency due to fuel savings，Upgraded hydraulic system for faster operation，The loading capacity is generally 8% higher than that of the same level%Left and right。

Another example is more performance oriented.“Strong productivity of mine warrior”DX380HD-10，Adopt the new fourth national engine，3% more power than previous model.4%，Can be raised to 240kW,Cylinder combustion temperature increased by 400℃，Resulting in higher fuel efficiency；With upgraded hydraulic system，Booster loading speed、The loading capacity is 5% higher than that of the previous model%，Pecially mine operation capacity，Be significantly enhanced。

Easy to operate、Easy to maintain, convenient and worry-free

Hyundai Doosan's fourth new machine has also undergone a remarkable upgrade in terms of operation.，Make the operation more flexible and convenient。Dig with the country's four wheelsDX150W-Take 10 as an example，Its rear and right sides，Add new cameras respectively，When moving during a job or transition，Past“Blind area of vision”Be clearly displayed on the display screen in the cab，Greatly improve safety performance。Still withDX150W-Take 10 as an example，It has the functions of active regeneration and manual regeneration，Able to help users achieve“No downtime required，Automatic regeneration”，It not only guarantees the emission standards of the Fourth National Standard,，But also doe not affect that construction progress and the money-making speed.。

DX380HD-10、DX500HD-10、DX560HD-10 and other four new machines in China，New standard one-button start function in the cab，It is also equipped with an intelligent remote control key.，Further improve operating comfort，And is convenient for a machine to use。Equipped with a new 8-inch touch instrument，Adopt a new interactive interface，Display information is intuitive and rich，Combine at the same timeFEHProperties of the electronically controlled hydraulic system，Provide left and right hand function switching of operating handle，It can be personalized according to the operating habits of different operators.，More and more humane，It can further improve the operation efficiency.。

In terms of follow-up maintenance concerned by users，Due to the success of modern Doosan Construction Machinery National IV model, it draws on the practical experience of higher standards such as Euro 5.，It has accumulated profound experience in the maintenance of the fourth national model.，Plus“Doosan love”The brand has always upheld“Customer-centric”The purpose of，Let users use the machine worry-free。

For Hyundai Doosan Construction Machinery，The Fourth National Standard is an upgrade of emission standards.，It is also a further evolution and upgrading of itself.、The opportunity to provide customers with better products and services。Based on the company of the past 28 years、Starting with the implementation of the Fourth National Standard，Hyundai Doosan will rely on the fully upgraded new machines that have been launched in the fourth series of the country.，Continue to join hands with Chinese users，Building a more beautiful China、Harvest a better life。