Green and Social Initiatives

Hybrid Excavator

Komatsu offers hybrid excavators that use, what normally would be, wasted energy to power swing and boost engine output while saving up to 30% in fuel consumption and emissions. The hybrid captures the energy produced during swing braking and stores it in a device called an ultra-capacitor. Unlike chemical batteries you may be familiar with in other hybrid vehicles, the ultra-capacitor is able to store energy immediately and make it available for immediate use. In this way, by using the stored energy to power the swing motor and boost the engine, the hybrid is very efficient and clean. The more you swing the more fuel you save and the lower amount of emissions you put into the atmosphere. So if you save 30% in fuel consumption, you’ll save a like amount of emissions. This emissions reduction can be very important in urban areas and where environmental restrictions demand greener solutions. In addition, the hybrids are quieter, especially the swing, than other machines in their class, a real advantage in urban, populated areas. Please go to the following link for more information on HB365LC-3 and hybrid technology.


TrolleyElectric mining trucks run diesel engines to produce electric power to drive their electric wheels. What if you have an ample external power source like a hydroelectric dam making inexpensive power? How can you utilize that power to run your mining trucks and save millions of dollars in fuel? That is exactly the problem Komatsu engineers were asked to solve. And solve it they did by creating trolley systems. In mines with very long uphill hauls, overhead trolley power lines were constructed. To connect the trucks to the overhead trolley lines moveable pantographs were mounted to the trucks above the operator’s cab. After being loaded in the pit, the operator will maneuver his truck under the trolley lines and raise his truck’s pantograph to contact the electrified trolley wires overhead. At this point, power from the trolley will take over and the engine will throttle down to low idle. Using outside power allows the truck to use more power than its engine could produce and to climb grades faster providing for higher production while lowering fuel consumption and emissions dramatically. Engine life will also be extended using Trolley. Trolley isn’t economical for every application. But for those applications where it does make sense the savings can be tremendous.

No Idling Initiative

No IdlingToday, the average construction machine idles up to 30% of its operating time. This idle time wastes fuel causes wear on the machine, racks up operating hours and introduces thousands of tons of emissions unnecessarily into the environment. By reducing idle time a machine operator can positively impact his company’s bottom line by reducing fuel consumption and turning machine idle hours into actual working, money making hours. In addition, with every reduction in idle time, there is an equal reduction in emissions into the environment. Komatsu created an initiative to use actual customer machine idling data from KOMTRAX to raise awareness among customers to train their operators to actively try to reduce their machine idle time. A series of training items were supplied to assist the customer in his operator training efforts (available through the merchandise site). The initiative produced impressive reductions in idle time, saving participating customers hundreds of thousands of gallons of fuel burned and thousands of tons of exhaust emissions.

Tier 4 Final

Tier 4 FinalThe Tier 4 Final solution builds on the Tier 4 Interim technology. Tier 4 Final adds Selective Catalyst Reduction (SCR). SCR uses AdBlueR/Diesel Exhaust Fluid (DEF) to reduce NOx by injecting the correct amount of DEF at the proper rate, decomposing NOx into non-toxic water (H2O) and nitrogen gas (N2).

With the addition of the SCR system, a stringent design target of “fluid neutral” or better was established. In a “fluid neutral” situation, the volume of fuel burned plus the volume of DEF consumed is equal to or less than total volume of fuel burned in the previous generation machine. This achievement lowers operating costs for the end customer as DEF typically costs less than diesel in North America.

To ensure product reliability and durability in demanding conditions, Komatsu developed the entire system, including the control software which is critical to the effective operation of the aftertreatment system. This control system is also integrated into the machine’s on-board diagnostic systems and KOMTRAX, Komatsu’s standard telematics system, which constantly monitors the machines health.

Engine Support Representative:
Scott Jos
Sr. Service Engineer
Office: +1(847)437-4453

Tier 4 Interim

All construction equipment manufacturers have to meet Tier 4 interim engine requirements. But the technology each manufacturer uses to meet the requirements varies. At Komatsu, we took the approach that Tier 4 interim technology should not hurt performance, should reduce downtime to a minimum and be as seamless as possible to the operator. And we accomplish those goals through some unique, advanced technologies.

Cutting Edge Electronic Control System – The advanced electronic control system controls air flow, EGR gas flow rate, fuel injection parameters, and after treatment function through intelligent software.

High Pressure Common Rail – Computer controlled high pressure fuel injection ensures a more efficient in-cylinder fuel burn.

Cooled Exhaust Gas Recirculation (EGR) – Recirculates cooled exhaust gas to reduce NOx.


Komatsu Variable Geometry Turbocharger KVGT) – By hydraulically controlling the variable geometry turbocharger boost pressure at low speeds can be raised for quick response as well as controlling gas flow into the Komatsu Diesel Particulate Filter (KDPF). Controlling the gas flow into the KDPF means that the temperature in the KDPF can be raised in order to oxidize soot (Particulate Matter (PM)) into CO2. This process is called regeneration.


Komatsu Diesel Particulate Filter (KDPF) – The KDPF collects soot from the exhaust stream by trapping it in its walls. 


Hydrocarbon Dosing (HC) – Hydrocarbons (fuel) are introduced, in cylinder or before the KDPF depending on engine size, to create an exothermic chemical reaction within the Komatsu Diesel Oxidation Catalyst (KDOC) to oxidize soot in the exhaust stream. This is part of the regeneration process.

Passive and Active Regeneration – Regeneration is the process of removing PM and NOx from the exhaust stream. Passive regeneration occurs during normal engine operation when exhaust temperature is sufficient. Active regeneration is triggered by the soot load in the KDPF or it can be time based. This process involves optimizing (increasing) exhaust temperature using the KVGT and hydrocarbon dosing. The advantage of the Komatsu method of Active Regeneration is that it has no effect on performance and the operator can continue working.

Crankcase Ventilation Filter (CCV) – The CCV filters blow-by gas to remove suspended oil particles then feeds the remaining gas into the air intake for burning.

Large 7” High Resolution Color LCD Monitor – The easy to read and understand monitor lets the operator know the status of his Tier 4 interim system.

Engine Support Representative:
Scott Jos
Sr. Service Engineer
Office: +1(847)437-4453


RemanKomatsu remanufactures used engines, transmissions and other key components (parts) of construction and mining equipment into remanned components that have the same high quality as newly manufactured components. Reman offers the following advantages to customers:

  • Quality and performance guaranteed to be the same as new components
  • Lower purchase cost of reman components
  • Reduced idle time for downed equipment awaiting repair
  • Core component recovery cost for the customer
  • Resource conservation and waste reduction through reuse and recycling components

Landmine Clearing

Landmine ClearingSince 2008, Komatsu has been working on a community-development project to demine and rebuild areas suffering damage from anti-personnel landmines in Cambodia and Angola. Komatsu provides demining machinery (modified bulldozers), developed through our expertise in building durable construction and mining equipment, at no charge.

After demining, development of agricultural land on the safely demined areas can begin. Community rejuvenation and reconstruction projects for digging wells, building schools and repairing and building roads and bridges have also been undertaken.

Corporate Social Responsibility (CSR)

Komatsu defines its CSR activities as ”responding to the demands of society through our core business”. Komatsu regards its Corporate Social Responsibility activities as an essential part of its core business. Komatsu is committed to maximize its corporate value through pursuing ”Quality and Reliability.” At Komatsu, we believe our corporate value is the total sum of trust given to us by society and all stakeholders. To enhance this trust, we need to not only improve our business results and the soundness and transparency of management, but also become a company which enjoys an even higher level of trust from society.

Our CSR Themes and Key Business Activities

  • Enhancing Quality of Life -Providing products required by society-
    • Providing products and services that contribute to infrastructure development and improve quality of life
    • Improving productivity, safety, and efficiency and enhancing energy conservation through the use of Information and Communication Technology (ICT)
    • Improving environmental efficiency at operation sites and facilities, such as plants
    • Reducing our impact on the environment throughout the product life cycle
    • Enhancing safety for society, customers, employees, and business partners
  • Developing People
    • Contributing to human resource development in local communities
    • Enhancing our employees and suppliers through The KOMATSU Way
    • Enhancing our employees and distributors through ”Brand Management”
  • Growing with Society
    • Engaging in dialogue with our stakeholders
    • Providing social contributions through the use of our core technologies and resources (e.g., disaster relief or activities to remove anti-personnel land mines)
    • Contributing to local communities where we do business
    • Strengthening our corporate governance and compliance
    • Promoting compliance with environmental, labor, and social norms within our group and among business partners
    • Komatsu is a signatory to the United Nations Global Compact

The Ten Principles of the Global Compact

[Human Rights]

  • Principle 1: Businesses should support and respect the protection of internationally proclaimed human rights; and
  • Principle 2: Businesses should make sure that they are not complicit in human rights abuses.

[Labour Standards]

  • Principle 3: Businesses should uphold the freedom of association and the effective recognition of the right to collective bargaining;
  • Principle 4: the elimination of all forms of forced and compulsory labour;
  • Principle 5: the effective abolition of child labour; and
  • Principle 6: the elimination of discrimination in respect of employment and occupation.


  • Principle 7: Businesses should support a precautionary approach to environmental challenges;
  • Principle 8: undertake initiatives to promote greater environmental responsibility; and
  • Principle 9: encourage the development and diffusion of environmentally friendly technologies.


  • Principle 10: Businesses should work against corruption in all its forms, including extortion and bribery.

* The United Nations Global Compact is a voluntary code of conduct in the four areas of human rights, labor, environment, and anti-corruption promoted by the United Nations for adoption by companies.

Komatsu takes its responsibility as steward to earth and the environment very seriously.

Komatsu Earth Environment Charter (June 2010 revision)

8770 W Bryn Mawr Ave., Suite 100
Chicago, IL 60631
(847) 437-5800