As of 1 December 2022，All production、37% of imports and sales~560kW（Including 560kW）Non-road mobile machinery and the diesel engines used in them shall conform to“Guo Si”Emission standards。At that time，The fourth national product will come into everyone's sight.，Gradually become the new main force in the mine.。Xugong has the brand strength of a big country's heavy equipment in the fourth national handover.。
The fuel consumption of the whole machine is greatly reduced，Operation efficiency is upgraded again
The Fourth National Emission Standard for Particulate Matter、Specific requirements are made for hydrocarbons as well as nitrogen oxides。Based on this，The fuel system of the engine equipped by XCMG is upgraded again.，Further improvement of fuel combustion efficiency，The fuel consumption of the whole machine is greatly reduced。At this point, the user may be concerned about a problem.，Compared with the mining products of the third national mine before，How is the market performance of the fourth national product?，Let's take a look at XCMG 70 tons.、Performance of 80-ton and 95-ton mining Excavators。
XE700GA（Guo Si），Xinjiang Aksu Standard 4.0 Rock Bucket，Average daily attendance exceeding 20 hours，Effective working time accounts for more than 90 percent％，Safe operation has exceeded 4000 hours。Single-pump double-loop independent heat dissipation system，Low temperature to achieve zero fan speed，Low noise，Low fuel。Compared with the fourth national product,XE700DF（Kunisan）5% improvement in operational efficiency%，6% reduction in operating fuel consumption%,Maintenance cost reduced by 2%，It is a mining Excavator with high cost performance.。
XE800GA（Guo Si）Newly upgraded hydraulic system，Operation efficiency increased by 15 percent％，Ordos with 5.6 Rock Bucket，Average daily attendance exceeding 21 hours，Effective working time accounts for more than 90 percent％，Monthly output: 300,000 m3，Fuel consumption per unit is 0.1，CompareXE800D（Kunisan）Operation fuel consumption reduced12%，Maintenance cost reduced by 2%，A proper expert in getting rich！
XE950GA（Guo Si），Average daily attendance exceeding 22 hours，Effective working hours account for more than 92 percent％，18 months of reliable operation，CompareXE950DA（Kunisan）Operation efficiency increased by 6%，Operation fuel consumption reduced4%，Maintenance costs reduced by 3 percent%。OneXE950GATwo mining Excavators at the same timeXDR80TMining dump Truck，7 Bucket full one car，It can fill two mine cars in five minutes at the fastest.，The efficiency is full。
Comprehensive upgrade of mining products of XCMG No.4 Mine。Significantly improved performance parameters，Operation efficiency has been greatly improved，It is well received by customers。
Adopt DOC + DPF + SCR After-treatment device，Multistage filtering and purifying tail game
The exhaust gas from the engine contains particulate matter.（PM）、Ammonia oxygen compound（NOx）And hydrocarbon（HC)，The after-treatment device can effectively reduce the components of the tail gas.，Make it below the emission standard limit。 DOC It is also called oxidation catalyst，Mounted at the outlet of the engine exhaust pipe，As a primary tail gas filter device，Its main function is to remove carbon monoxide from engine exhaust through oxidation reaction.（CO)And hydrocarbon（HC）Into harmless water.（H20）And carbon dioxide（CO2)。
DPF Also known as diesel particulate trap.，Its function is to adsorb particulate matter in waste gas.，Prevent pollution to the environment caused by direct discharge into the atmosphere。Of course DPF Has a finite volume.，When the carbon particle capacity reaches the limit，It will be burned by exhaust heating.，This way is also called“Regeneration”。Unlike many main engine factories,，The XCMG after-treatment device does not need to be shut down or added with other sensors for monitoring，The engine will monitor in real time and select the appropriate time point for regeneration.。The whole process takes place spontaneously.，Moreover, the user does not need to spend extra energy on the manual maintenance of the post-processing device.，Very convenient。
SCR Also known as selective catalytic reduction，Primarily nitrogen oxides from untreated tail game（NOx),Simply speaking, the working principle is to use selective catalytic reduction technology under the action of aftertreatment catalyst.，Urea solution is sprayed into the tail gas.，Nitroxides（NOx）Reduced to nitrogen（N2)And water（H2O)。
Post-processing framework optimization，Enhance air convection，Avoid too high aftertreatment temperatures
It is different from the simple muffler exhaust system structure of the third national product.，The fourth national standard is replaced by after-treatment assembly.，Due to the large number of sensor harnesses，Therefore, the temperature requirements for post-treatment are also different.。The urea nozzle and sensor in the post-treatment device have high requirements for temperature.，If it works in high temperature environment for a long time, its service life will be greatly shortened.。In this regard, the post-processing framework of the fourth model of XCMG was upgraded.，Strengthen the air convection inside and outside the cabin，Controlling the post-treatment temperature within a reasonable ran，To protect the aftertreatment device。
New functions of delay flameout and delay power off，Protection of urea nozzle and post-treatment system
The fourth national product has added the function of delaying flameout.，That is, when the engine is about to shut down，Will work for an extended period of time and then stop running，Its purpose is to protect the urea nozzle，Avoid the influence on the service life due to too high temperature.。
A so-called delay power off，When the engine is about to stop working.，The urea solution in the urea pipe and the after-treatment unit will be pumped back to the urea tank，The pullback process will be accompanied by the indicator lights on and off.，Until the indicator goes out，That is, the end of the withdrawal process.，To cut off the power.。The whole process lasts 1-2 minutes，The purpose is to protect the aftertreatment system，Avoid urea solution remaining in the urea tube.，Urea tube rupture due to cold weather。
The overall layout is more reasonable.，Face value space utilization rate double online
Brand new XCMG products，Design the newly added urea tank in the toolbox，Convenient for users to add urea，It is also easy to check later.，At the same time, we give users enough space to store tools.，No need to worry about occupying toolbox space。
The fuel system has a new simplified layout，Each fuel line is secured in multiple positions with multiple clamps.，The pipeline is clear，The layers are clear。
Cab with new look and new interior，Compared with the original cab, it has better sealing and comfort.。
The aftertreatment system is arranged in the engine room instead of the muffler.，The spatial layout is reasonable，Coordination is very good。
Heat insulation sleeve is added to the exhaust corrugated pipes，Avoid damage to electrical components due to high cabin temperatures。
Over 7000 hours of field testing，Safe operation is guaranteed
XCMG in different areas、A large number of different types of excavators for the fourth national mine have been put into operation at different times.，The longest one has been running safely for more than 7000 hours.，It is still in good condition.，“Low fuel consumption”,“I can work”“Fewer faults”，Many customers have given high praise to XCMG products.。
Xugong mining excavators have adapted to the environmental requirements of different countries and regions.。Xugong has been adhering to Xugong“Leading technology，Use without destruction”Product concept，Continuously optimize the overall performance。So far，Xugong has ranked third in the construction machinery industry.，Its products are exported to more than 191 countries and regions around the world.，Deeply trusted by the majority of users。
A man who digs a well starts from a ridge of three inches.，In order to reach the depth of ten thousand feet.。Xugong Mining Excavator R & D Team has always implemented“Customer-centric”The idea of，Focus on customer value needs，Pursue excellent performance of products，Ensure high output of equipment、Low fuel consumption、High reliability、Low maintenance cost, etc.，Help maximize revenue。XCMG fully responds to the national environmental protection concept，Take practical actions to implement the Blue Sky Defense War，Protect green water and green hills，Continuously promote product technology upgrading with higher standards，Deliver the best products and services to customers，Continue to write a new chapter of high-quality development of Xugong Mining Machinery in the Fourth National Era！
