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Komatsu’s Environmental and Social Activities Enhancing Quality of Life

Mitigating Climate Change (Mitigating Climate Change through Products and Services)  Tier4 Final Compliant Models Released

Komatsu has released one model after another that greatly reduce nitrogen oxide (NOx) and particulate matter (PM) emissions and meet the emissions controls of Japan (Emissions from Non-Road Special Motor Vehicles 2014 Standards), North America (EPA Tier4 Final), and Europe (EU StageⅣ).

Below are some examples.

Medium-Sized Hydraulic Excavator "PC490LC-11"*1



With “Quality and Reliability” as a foundation, Komatsu has pursued an ever higher level of environment, safety and ICT qualities, and released to the market PC490LC-11, which adds an outstanding fuel efficiency to this generation’s environmental capabilities.

This model has a new type of engine that meets the North America EPA Exhaust Emissions Tier 4 Regulations (Tier4 Final) as well as Europe Exhaust Emissions Regulations Stage IV to further promote “clean & economy”.

Fuel consumption has been decreased by a maximum of 11% compared to the previous model (PC490LC-10).
*1 For Europe and North America

[Main Specifications]
Item Unit PC490LC-11
Machine Mass kg 48400
Net Engine Rated Output kW/min-1 268/1900

Large-Sized Bulldozer "D155AX/AXi-8"



With “Quality and Reliability” as a foundation, Komatsu has pursued environment, safety and ICT qualities to release to the market D155AX/AXi-8, which meets the next generation exhaust emissions regulations (Japan: 2014 Regulations, North America: Tier4 Final, Europe: StageIV) which have been in effect since 2014.

In particular, the D155AXi-8 is the first ICT construction equipment compliant to the next generation exhaust emission regulations of Japan, USA and Europe. By building in, for the first time, an automatic blade control function to a large-sized bulldozer which bears the large burden of heavy excavation work in land preparation, quarrying and mining, this large-sized bulldozer performs with great effectiveness, making possible an improvement in work efficiency (decreased the fuel consumption rate per amount of work) of approximately 8% compared to models without the automatic blade control.

[Main Specifications]
Item Unit D155AX/AXi-8
Machine Mass kg 40500
Net Engine Rated Output kW/min-1 264/1900

Dump Truck "HM400-5"*1



The HM400-5, by incorporating the Komatsu Diesel Particulate Filter (KDPF) and Selective Catalytic Reduction (SCR), significantly reduced the emission of nitrogen oxide (NOx) and particulate matter (PM) to meet the North America EPA Exhaust Emission Tier4 Final Regulations (Tier4 Final) and Europe Exhaust Emission Regulations StageIV.

For the HM400-5 equipped with the SCR, an AdBlue®(*2)becomes necessary. However, by keeping the total cost of light oil + AdBlue® equal to the conventional model (HM400-3), a low fuel consumption rate has been achieved (fuel efficiency improved by 2.0%).

In addition, the fuel consumption waste that occurs during times such as waiting for loading has been eliminated by the use of an auto-idle-stop. Further decrease in fuel consumption will become possible.

*1 For Europe and North America
*2 AdBlue® is a registered trade mark of Verband der Automobilindustrie e.V.(VDA)
[Main Specifications]
Item Unit HM400-5
(Overseas General Specification)
Machine Mass kg 35000
Net Engine Rated Output kW/min-1 348/2000