ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS
EMISSION
About Engine Technology
This engine technology combines a Komatsu Diesel Oxidation Catalyst (KDOC) and Komatsu’s Urea Selective
Catalytic Reduction (SCR) to conform EU Stage IV emission regulation in the European Union.
• Komatsu Diesel Oxidation Catalyst (KDOC): The system makes possible to eliminate the need for regener-
ation and simplifies the engine control system.
• Komatsu’s Urea SCR system: A device which decomposes the toxic nitrogen oxides (NOx) mixed in the
exhaust gas into harmless nitrogen and water. Spraying the reagent (Diesel Exhaust Fluid) 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.
About Diesel Exhaust Fluid (DEF)
Diesel Exhaust Fluid is the reagent for the SCR system.
DEF is the abbreviation for Diesel Exhaust Fluid, and is represented as DEF throughout this manual.
DEF is a colorless transparent and aqueous urea solution made with 32.5 % urea (AUS32) and 67.5 % deion-
ized water. Urea as main constituent is a material which is used for cosmetics, medical and pharmaceutical
products, and fertilizer, etc.
Commercial DEF, commonly referred to as AdBlue in the European Union AdBlue
®
; the quality standards are
maintained in accordance with DIN70070 and ISO 22241-1.
AdBlue
®
is a registered trade-mark of VDA (Verband der Automobilindustrie e.V.: German automobile associa-
tion).
FOREWORD
ENGINE TECHNOLOGY TO CONFORM EXHAUST GAS EMISSION
1-11
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Summary of Contents for PW118MR-11
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Page 9: ...Do not repeatedly handle and lift loads FOREWORD VIBRATION LEVEL 1 7 WENAM00130...
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Page 25: ...LOCATION OF SAFETY LABELS RKA64590 SAFETY SAFETY LABELS 2 3 WENAM00130...
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Page 74: ...GENERAL VIEW MACHINE EQUIPMENT NAME RKA61930 GENERAL VIEW OPERATION 3 2 WENAM00130...
Page 77: ...CONTROLS AND GAUGES NAMES RKA62690 OPERATION GENERAL VIEW 3 5 WENAM00130...
Page 168: ...SWITCHES RKA63060 EXPLANATION OF COMPONENTS OPERATION 3 96 WENAM00130...
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Page 413: ...SPECIFICATIONS 5 1 WENAM00130...
Page 445: ...REPLACEMENT PARTS 7 1 WENAM00130...
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