Actions Taken To Meet Exhaust Gas Regulations - Komatsu PC240LC-11 Operation & Maintenance Manual

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Shop manual (61 pages)

Table of Contents

FOREWORD

ACTIONS TAKEN TO MEET EXHAUST GAS REGULA-

TIONS

This machine conforms to either regulation of Tier4 Final (North America) or Stage IV (Europe).

This machine is equipped with the following two exhaust gas treatment systems:

•

Komatsu Diesel Particulate Filter (hereafter KDPF): A device which captures soot in the exhaust gas to pu-

rify exhaust gas. This process performs the combustion of soot referred to as "regeneration".

•

Urea SCR system: A device which decomposes the toxic nitrogen oxides (NOx) mixed in the exhaust gas

into harmless nitrogen and water. Spraying aqueous urea solution into the exhaust gas produces a reaction

between the nitrogen oxides and ammonia generated from the urea solution and decomposes the nitrogen

oxides into nitrogen and water.

Either AdBlue® or DEF may be used as the aqueous urea solution for the SCR system.

AdBlue® is a registered trade-mark of VDA (Verband der Automobilindustrie e.V.: Automobile Association of

Germany).

DEF is the abbreviation for Diesel Exhaust Fluid.

Commercial DEF that is API approved and meets all the requirements defined in ISO 22241-1.

This solution will be represented as AdBlue/DEF throughout this manual.

About AdBlue/DEF

AdBlue/DEF is necessary for the urea SCR system. AdBlue/DEF is a colorless transparent 32.5% aqueous urea

solution. Urea as main constituent is a material which is used for cosmetics, medical and pharmaceutical prod-

ucts, and fertilizer, etc.

If you add any additional additive agents or water to AdBlue/DEF and use it, the devices will not function proper-

ly, and conformance to the exhaust gas regulations will be lost. In addition, it will cause failure of the machine.

•

In Europe, use AdBlue.

•

In North America, use DEF (Diesel Exhaust Fluid) which is certified by API (American Petroleum Institute).

The certified DEF has the API DEF Certification Mark shown as follows. Look for the API DEF Certification

Mark when purchasing DEF.

API Diesel Exhaust Fluid Certification Mark is the trade

mark of API (American Petroleum Institute).