Komatsu’s Green and Social Initiatives

Hybrid Excavator

The HB215LC-1 is a hybrid excavator that uses what normally would be wasted energy to power its’ swing and boost its’ engine output while saving up to 30% in fuel consumption and emissions. The HB215LC-1 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 use immediately also.


Electric 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.

No Idling Initiative

Today, 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.

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.

Tier 4 Final

The 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).


Komatsu 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.

Learn more about Komatsu’s Green and Social Initiatives