Reduction in CO2 Emissions of Construction Equipment

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The main bulk of the CO2 emissions amount produced over the lifecycle of construction equipment is during product operation, which accounts for approximately 90% of the total. With this in mind, in order to reduce CO2 emissions from their products, Komatsu has worked on the 3 approaches of Dantotsu Products, Dantotsu Service and Dantotsu Solutions.

Step1: Reduction of CO2 Emissions through Dantotsu Products


We will provide products with great fuel economy performance and reduce CO2 emissions. For example, the hybrid hydraulic excavator, which Komatsu was the first in the world to introduce to the market, is one such product.
These hybrid construction machines have been certified by the Ministry of Land, Infrastructure, Transport and Tourism of Japan as "Low Carbon Type Construction Equipment."
Low Carbon Type Construction Equipment Certified Models: HB205-2, HB215-2, HB335-3, HB365-3 and others, a total of 12 models (As of April 2017)
Also, the bulldozer D155AX-8, the hydraulic excavator PC300-11, the wheel loader WA470-8 and others—a total of 11 models—have been certified as the Ministry of Land, Infrastructure, Transport and Tourism's "Construction Machines Fulfilling Fuel Economy Standards" to be construction equipment with great fuel economy performance. (As of April 3, 2017)

Step2: Reduction of CO2 Emission by Products through Dantotsu Service (KOMTRAX)

The Komatsu Tracking System "KOMTRAX" is a system developed by Komatsu to make possible the automatic gathering of operation information/health information from construction vehicles operating all over the world, to then monitor/manage/analyze the vehicles from afar. The information collected is provided to customers through the internet, and at the same time because it "makes visible" the equipment's operation time, its work time and even it is being used, as well as its fuel consumption, we are able to suggest improvement points after analyzing the information. In this way, we are supporting improvement in fuel consumption (=CO2 emissions reduction) for our customers.

Step3: Reduction of CO2 Emissions for Overall Construction Work through Dantotsu Solutions (SMART CONSTRUCTION using ICT Construction Equipment)

In 2013, Komatsu introduced the ICT bulldozer D61PXi-23 with the world's first automatic blade control capabilities to the North American, European and Japanese markets. Further, in 2014, Komatsu introduced to the market a hydraulic excavator with a semiautomatic control function, model PC210LCi-10 for North America and Europe, and model PC200i-10 for Japan. Preliminary calculations based on in-house test construction data for ICT hydraulic excavators showed that foreslope shaping work using the PC200i-10 resulted in an approximately 30% reduction in fuel use. Also, preliminary calculations based on in-house test construction data for ICT bulldozers showed that land preparation work using the D61DXi-23 resulted in an approximately 25% reduction in fuel use, and we were able to see that like the ICT hydraulic excavator, CO2 emissions were reduced.
Komatsu is implementing "SMART Construction" which uses these types of ICT construction machines and taking current topography measurements using drone and 3D scanners in order to promote and "make visible" the efficiency and work process of construction sites.

Reduction of CO2 Emissions from Construction Equipment (Estimate of Amount of Reduction Contributions)

In Komatsu's Mid-term Management Plan (FY2016 - FY2018), we set the goal of achieving 25% reduction by 2025 in CO2 emissions per amount of work from construction equipment as compared to 2007. To assess progress, the construction equipment manufactured each year is being compared to the equipment capabilities of the standard year (FY2007) and estimating the CO2 reduction contribution amount resulting from the improvement in fuel economy and work efficiency.
As a result, the machines manufactured in FY2016, compared to the standard year (FY2007), achieved a 7.4% reduction in CO2 emissions, and if these machines were operated for one year, we found that it would contribute to reducing the amount of CO2 by approximately 150,000 tons. (Operation time for one year estimated at 1200 hours) This contribution to the reduction amount is equivalent to approximately 40% of CO2 emissions in FY2016 produced by all the manufacturing plants of Komatsu Group world-wide.

CO2 emissions for operation time of one year (ton-CO2)

CO2 emissions for operation time of one year (ton-CO2)