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Komatsu's Environmental and Social Activities Enhancing Quality of Life


Special Story: Reducing CO<sub>2</sub> Emissions from Construction Equipment

Komatsu's assessments of the CO2 emissions by Scopes 1, 2 and 3 reveal that CO2 emissions from the construction equipment being in use account for nearly 90% of the total amount of CO2 emissions produced throughout its lifecycle, from material procurement to manufacture, usage and disassembly (see “Amount of CO2 Emissions by Scope 3”).

With this in mind, Komatsu has taken a three-step approach to cutting CO2 emissions from its products.

Step1 Improve the fuel efficiency of construction equipment (“Dantotsu” products)

Step2 Cut the fuel consumption of construction equipment through suggested usage
            improvements (“Dantotsu” services)

Step3 Drastically enhance construction efficiency and thereby reduce fuel consumption
            by using automatic control on construction equipment (“Dantotsu” solutions)

Komatsu is broadening the scope of its approach to CO2 emissions reduction by offering solutions as well as products, and by providing innovative ways to cut CO2 emissions to its customers.

Lifecycle of Construction Equipment
Lifecycle of Construction Equipment

Step1.Reduce CO2 Emissions with “Dantotsu” Products

HB205-2

HB205-2

Komatsu delivers fuel-efficient products to reduce CO2 emissions. Examples are the hybrid hydraulic excavators launched into the global market for the first time in 2008, which have reduced fuel consumption by 25% on the average when compared with other then-available models.

Step2.Reduce CO2 Emissions from Products with “Dantotsu” Services (KOMTRAX Usage)

Vehicle Information Management System(KOMTRAX)
Vehicle Information Management System(KOMTRAX)



In addition to improving fuel efficiency of products, Komatsu advises its customers on how to use construction equipment to reduce fuel consumption by offering them “visualized” presentations of equipment usage condition data.

A Komatsu-developed vehicle information management system used to this end, KOMTRAX automatically collects operating and health information from the construction vehicles in use around the globe to aid in remote vehicle monitoring, management and analysis. Information collected is not only made available to customers via the Internet but is used to “visualize” equipment operating hours and work hours ,usage and fuel efficiencies, to come up with suggested improvements.

This is how Komatsu supports its customers in their effort to improve fuel efficiencies (that is, reduce CO2 emissions).

Step3.Reduce CO2 Emissions across Construction Work Flow with “Dantotsu” Solutions (from computer-aided construction to Smart Construction)

Commitment to computer-aided construction

Computer-aided construction is a plan of activity in which electronic information on one out of a sequence of processes relevant to the implementation of construction works-from surveying and designing, to constructing, testing, inspection and management-that has been obtained using ICT (information and communications technology) is applied to other processes to ensure enhanced productivity, quality, etc. across the process sequence.

Construction equipment loaded with a computer-aided construction system verifies operating equipment location information and 3D design data against each other to assist the operator at work and implement automatic controls, thereby drastically saving previously required finishing stake work and surveying work during construction, and the consequent corrections. The results are shorter construction periods, better construction equipment availability and reduced CO2 emissions.

In 2013, Komatsu introduced the world’s first ICT computer-aided construction bulldozer, the D61PXi-23-featuring an automatic blade control capability-on the North American, European and Japanese markets. Then in 2014, Komatsu introduced the world’s first hydraulic excavator, PC210LCi-10, featuring a semiautomatic control capability into the North American and European markets and the PC200i-10 into the Japanese market. Komatsu expects that these flagship models will help computer-aided construction expand to a broader range of construction sites.

Both models carry a new-generation engine that greatly reduces Nitrogen Oxide (NOx) and Particulate Matter (PM) emissions to address new emissions regulations in effect since 2014 in the U.S. and Europe.

<ICT construction equipment features>
Ground leveling assistance
Ground leveling assistance

The boom lifts automatically so that the bucket moves along the construction surface when the arm is manipulated. This feature allows the operator to carry out rough excavation work without concern for the construction surface and do the final finishing excavation work merely as a arm lever operation. A boom lowering operation may be included to broaden the sphere of construction.

Automatic stop control
Automatic stop control

When the blade edge of the bucket reaches the construction surface during boom or bucket operation, the operating equipment stops automatically to avoid harming the construction surface. The blade edge is also easy to position.

Intelligent Machine Control Hydraulic Excavator Feature
 Intelligent Machine-Controlled Bulldozer Features
Intelligent Machine-Controlled Bulldozer Features
<Effect on CO2 Emissions Reduction by ICT Construction Equipment>

For example, preliminary calculations based on the data collected from an in-house test execution using an ICT hydraulic excavator indicate that an approximately 30% saving in fuel consumption has been achieved in a banked slope trimming operation with a PC200i-10, thereby reducing CO2 emissions.

Construction in a manual operation in which finishing stakes are checked visually (previous procedure)

Construction in a manual operation in which finishing stakes are checked visually (previous procedure)

Construction under semiautomatic control [Slope trimming] (ICT construction equipment)

Construction under semiautomatic control [Slope trimming] (ICT construction equipment)

*These are the results from a test execution carried out in-house and does not guarantee an equivalent effect for all executions.

Effects of CO2 Emissions Reduction in Power Excavators by Computer-Aided Construction

Further, preliminary calculations based on the data collected from an in-house test execution using an ICT excavator indicate that an approximately 25% saving in fuel consumption has been achieved in a leveling-off operation with a D61PXi-23 – an equivalent of the cut in CO2 emissions available with an ICT hydraulic excavator.

Construction in a manual operation in which finishing stakes are checked visually (previous procedure)

Construction in a manual operation in which finishing stakes are checked visually (previous procedure)

Construction under fully-automatic control (ICT construction equipment)

Construction under fully-automatic control (ICT construction equipment)

*These are the results of a test execution carried out in-house and does not guarantee an equivalent effect for all executions.

Effects of CO2 Emissions Reduction in Bulldozers by Computer-Aided Construction

Evolving into Smart Construction

On January 20, 2015, Komatsu unveiled its Smart Construction initiative in Japan.

To encourage wider usage of computer-aided construction by its customers, Komatsu proposes to make the work flow on construction sites more efficient by measuring the current terrain using drones and 3D scanners to prepare 3D drawings in the preconstruction processes in order to “visualize” the work of planned construction processes and the progress of planned activities with computer-aided construction equipment. Komatsu expects that simplifying construction processes and making the on-site workflow more efficient can result in the secondary benefits of CO2 emissions reduction.

Furthermore, the entire sequences of construction processes can be compiled on electronic databases, making the administrative work paperless to further reduce the environmental load.

In its commitment to computer-aided construction, Komatsu is driving the global deployment of Smart Construction, including North America, Europe and Japan, not only to compile information about construction equipment used in construction processes on to databases, but to also reduce the environmental load across all construction works.