tier 4 final presentation - gce.cummins.com · Common controls across all Cummins Tier 4 Final Engine ... Increased useful engine operating speed range 3. ... SCR systems supplied

Cummins G-Drive Tier 4 Final Technical Presentation

Cummins Confidential

Agenda

Module 1 - General Tier 4 Final Information– Emission Regulations Overview– Tier 4 Final Product Portfolio

Module 2 – Tier 4 Final TechnologiesDirect Flow Air Cleaner Cooled EGRCrankcase Ventilation System CM2350 Control TechnologyHigh Pressure Common Rail Selective Catalytic ReductionTurbo Technology Diesel Oxidation CatalystIntake Air Throttle Diesel Exhaust Fluid

Cummins Confidential2

Agenda

Module 3 – Tier 4 Final Product Architecture and Features– 4 cylinder: QSB5– 6 cylinder: QSB7, QSL9

Module 4 - Tier 4 Final Operations & Maintenance– Operator Guidelines– SCR & DEF: EPA Inducements– Service Intervals

Performance ValidationFurther Resources


Agenda


Module 2 – Tier 4 Final Engine TechnologiesDirect Flow Air Cleaner Cooled EGRCrankcase Ventilation System CM2350 Control TechnologyHigh Pressure Common Rail Selective Catalytic ReductionTurbo Technology Diesel Oxidation CatalystIntake Air Throttle Diesel Exhaust Fluid


US EPAEmissions Regulations Overview

Diesel Emissions - Overview

Particulate Matter (PM)

– PM is the ‘black smoke’ or soot that comes out of the exhaust

– Worsens preexisting respiratory conditions such as asthma and allergies

Oxides of Nitrogen (NOx)– Colorless smoke (NO) / yellowish-brown smoke

(NO2)– Contribute to photochemical smog and acid rain

Hydrocarbons (HC)– Some have irritating odor, toxic and/or carcinogenic– Contribute to photochemical smog

Carbon Monoxide (CO)– Colorless, odorless and tasteless gas– Toxic in high concentrations


Emissions Regulations - Categories

On Highway or Off-Highway Stationary or Mobile Emergency or Non-Emergency Variable Speed or Constant Speed (EU Only)

Power Generators – highlighted Strong correlation with ISO ratings and duty cycles, but EPA

regulates by application Emergency Stationary applications can remain at previous

Tier


Meeting ‘Near-Zero’ Emissions

A 90 percent reduction in PM & NOx emissions to ‘near-zero’ levels

Tier 3

0.200.02

4.0

0.40

Tier 4 Interim

2.0

Oxi

des

of N

itrog

en (N

Ox)

g/k

W-h

r

Particulate Matter (PM) g/kW-hr

Achieving more than emissions compliance: Reducing fuel consumption Improving engine response Enhancing equipment productivity

Tier 4 Final

2011/12

2014/15

2005/6

90%


Regulations Timeline

20-50kWe

60–125kWe150-300kWe

> 500kWe


Product Ratings

QSB5 QSB7 QSL9

DOC-SCR

Tier 4 Final – Product Offering

Competitive power density

Simple aftertreatment configuration

Consistent architecture across the power ranges

Single, integrated engine & aftertreatment controls across power range

Dual speed capability as standard

Improve fuel efficiency

Flexible mounting through multiple AT configurations


Tier 4 Final G-Drive Ratings

* Ratings are dependent on alternator efficiency and parasitic loads


Diesel Oxidation Catalyst SISO configuration

(w/90 deg Orientation)

Selective Catalytic Reduction (SCR) Device (w/90 deg orientation)

Supply Module (24V)

Decomposition Reactor Tube

Urea Doser

NOx (out) Sensor

NOx (in) Sensor

PM + NOx

Emissions reduced 95% of PM Vs T3 90% of NOx Vs T3

Close-Up: Aftertreatment System


Agenda


Module 2 – Tier 4 Final TechnologiesDirect Flow Air Cleaner Cooled EGRCrankcase Ventilation System CM2350 Control TechnologyHigh Pressure Common Rail Selective Catalytic ReductionTurbo Technology Diesel Oxidation CatalystIntake Air Throttle Diesel Exhaust Fluid


Tier 4 Final Technologies

CombustionTechnology

Electronic Controls

TurbochargersFuel

Systems

Aftertreatment System

Filtration and Diesel Exhaust Fluid

Integrating Critical Subsystems


Engine Technology OverviewTechnology

Direct Flow Air Cleaner Compact filter design improves packaging

Crankcase Ventilation System Patented coalescing technology

High Pressure Fuel System High fuel pressure, improves combustion & reduces PM in-cylinder

Variable Geometry Turbo Enhances power output Advanced VGT design enables effective

transient responseCooled EGR Reduces NOx in-cylinder

CM2350 Control Technology Integrated engine & aftertreatment control Common controls across all Cummins

Tier 4 Final Engine platformsIntake Air Throttle Improved exhaust thermal management,

during low load & low ambient conditions


Aftertreatment Technology OverviewTechnology

Diesel Oxidation Catalyst Flow through device reduces hydro carbons Maintains optimum exhaust temperatures

Selective Catalytic Reduction Reduces NOx through catalytic reaction Flow through device

Decomposition Reactor Tube Mixer tube, where DEF is injected upstream of SCR


Direct Flow Air Filter

Cummins Direct Flow Air Filter Specifically developed for Cummins Tier 4 system Flat profile maximizes filter media size to reduce

installation space by 35% Enables more efficient ‘Direct Flow’ of air through filter

compared to conventional radial seal filters Extends filter element change life

TM


Why Direct Flow?

New Direct Flow air filter set within current OptiAir filter envelope demonstrates space saving


Direct Flow™ offers greater dust holding capacity in a smaller package versus competitors

Superior Performance


Crankcase Ventilation System

Clearing the Air with Crankcase Ventilation

During diesel engine operation, blow-by is generated by the leakage of combustion gases past piston rings Crankcase gases must be particularly well cleaned in order to

minimize turbocharger and intercooler deposits and fouling, as well as to reduce particulate loading on the exhaust aftertreatment system


Cummins Tier 4 engines use open, dripless crankcase breather filter system with patented coalescing technology Engine crankcase breather systems filter blow-by gases being

vented from the crankcase to the atmosphere Oil/vapor/air mixture is vented from the crankcase to the

atmosphere via a coalescing filter, which allows oil to drain back to the crankcase and air to be vented to atmosphere The coalescing crankcase breather assembly is made of

aluminum material utilizing a rubber gasket material to seal


Clearing the Air with Crankcase Ventilation

High Pressure Common Rail


Optimizing Engine Performance

Changing emissions result in new fuel system technology, High Pressure Common Rail (HPCR) The HPCR provides precise fuel control for optimized in-

cylinder combustion, leading to better fuel efficiency and reduced emissions In addition to increasing power output and lowering fuel

consumption, HPCR reduces noise and engine vibration


Turbo Technology

In order to control both NOx and particulate emissions accurately, the amount of recirculated exhaust gas and air has to be precisely metered into the engine under all operating conditions

For Cummins Tier 4/Stage IIIB 174-751 hp (130-560 kW) products, this has driven the use of variable geometry turbochargers

The Cummins Turbocharger is used in concert with an EGR control valve to accurately meter the cooled exhaust gas into the intake system, increasing performance and improving fuel economy

Variable Geometry Turbo (VGTTM)


Benefits of Cummins VGTTM

1. Excellent transient response2. Improved fuel economy

Increased useful engine operating speed range

3. Proven durable design Reduced engine swept volume

and package size for a given rating Helps control Exhaust Gas

Recirculation (EGR) to meet emissions regulations Avoids the need for dual-turbo

complexity Mature technology, with over 3.5

million units produced by Cummins


Speed

Boo

st

Fixed Geometry Turbocharging

WastegateTurbocharging

Variable GeometryTurbocharging

Pumping Losses

Increased Air/Fuel Ratio

Cummins variable geometry turbocharger with patented sliding nozzle design Improves boost efficiency across all engine speeds/loads Sliding nozzle design offers improved reliability over swing

vane

Cummins VGTTM –

Improved Transient Response


Exhaust Gas Recirculation Technology

Technology that diverts a percentage of the exhaust gas back into the cylinder, lowering combustion temperatures and reducing NOx emissions by 45% Improves fuel-efficiency Cummins short-loop system brings EGR directly back to

cylinder – avoids long route through turbo, CAC & DPF

Exhaust Gas Recirculation (EGR)

CA

C

EGR-Cooler

VG Turbo

EGRAir Control ValvesCummins Confidential34

CM2350 Control Technology

CM2350 Electronics The CM2350 is the next generation Engine Control

Module (ECM). It replaces the CM850 used on Tier 3 and CM2250 used on Tier 4 Interim engines Integrated control which interacts with both engine and

aftertreatment Common platforms across QSB5 all the way up to QSK60


Intake Air Throttle

The intake air throttle lowers the fresh air flow to the engine during thermal management modes, which raises the exhaust gas temperatures to maintain heat in the aftertreatment systems

Intake Air Throttle (IAT)


39

Intake Air Throttle

Intake Air Connection

Intake Air Throttle

Wire Harness

QSB7 QSL9


ECM – CM2350

Intake Air Throttle - Placement

Intake Air Throttle Valve

EGR Valve

Intake elbows and connection


Operating Guidelines


AEB010259Zone 1 – Cummins recommends operating outside Zone 1 for maintaining optimum exhaust temperature Zone 2 – Avoid prolonged operation to minimize long-term degradation

Intake Air Throttle significantly improves ability of the Tier 4 Final engine, to maintain necessary exhaust temperatures

Cummins recommends avoiding extended operation in the extreme low load & low ambient conditions

Aftertreatment Technology

Diesel Oxidation Catalyst (DOC) removes PM in exhaust stream in combination with HPCR clean combustion

Engine exhaust

Clean exhaust with near-zero PM and NOx

Selective Catalytic Reduction (SCR) removes NOx in exhaust stream in combination with cooled EGR clean combustion

EcoFit Ultra-Low Emission (ULE) System

Clean combustion & aftertreatment work together to remove emissions at all exhaust temperatures without compromising power or fuel efficiency


PM reduction from 15-30%− Oxidates Particulate Matter into

harmless products at normal exhaust temperatures

Flow-through Substrate– Cordierite material utilized for

MidRange engines– No maintenance or cleaning

necessary unlike a filter PGM coated substrate

– Platinum-Group Metals enable low temperature catalytic conversion

– Higher PGM loading and larger size than Tier 4 Interim increases capability

Compatible with ULSD – 15-ppm ultra-low sulfur diesel – Also tolerant to 500-ppm fuel

EcoFit DOC Technology

Light shown through substrate illustrates flow-through paths


Lower Initial Cost

Minimize Installation Complexity

Fit & Forget Service-free

EcoFit DOC – Based On Mature Technology1,000,000+ DOC devices supplied by CES since 1994 Leveraging extensive on-highway experience Cummins Compact Catalyst proven at Tier 4 Interim with QSB5 & QSB7


Diesel Oxidation Catalyst (DOC)

Selective Catalytic Reduction (SCR)

EcoFit Selective Catalytic Reduction (SCR)

SCR systems supplied by CES since 2005 Euro 4 Leveraging 26 billion miles of on-highway experience CES industry leading expertise in catalyst coatings and system interactions

1,000,000+


SCR Chemistry

1. Decomposition Reactor

Doser unit injects DieselExhaust Fluid (DEF) 32.5% Urea / 67.5% Water

1. Thermal decomposition of Urea to Iso-Cyanic Acid and Ammonia

SCR Catalyst

2. Hydrolysis using H2O to convert Iso-Cyanic Acid to Ammonia and CO2

3. Reduction of Nitrogen Oxides to Nitrogen Gas and H2O

Ammonia Slip Catalyst

4. Reduction of Ammonia to Nitrogen Gas and H2O

Exhaust with PM removed by DOC

Clean exhaust with near-zero NOx and PM


DEF Dosing Unit Injector

InsulationInlet Mixer

DEFExhaust Flow

How SCR Works 1: DEF Decomposition Thermal decomposition (Thermolysis) of Urea to Ammonia & Iso-Cyanic Acid

C ONH

H

HHN

H

C ONH

HHN

H

HHNHHNH

Iso-Cyanic Acid

Ammonia

H-N=C=OH2N

C = OH2N

+ NH3

DEF (Urea)

Ammonia & Iso-Cyanic Acid


How SCR Works 2: Hydrolysis Hydrolysis process occurs with sufficient SCR temperature Water from DEF solution converts Isco-Cyanic Acid to Ammonia & CO2

SCR CatalystDecomposed DEF

mixed with exhaust gas

Iso-Cyanic Acid

Water

C ONH

C ONH

OH

H

OH

H

HHN H

CO

O

Carbon Dioxide

H HNH

HHN H

NH3H-N=C=O + H2O + CO2

Ammonia


How SCR Works 3: NOx Reduction Reduction of Nitrogen Oxides (NOx) to Nitrogen Gas and water clean exhaust

NOx Water

Nitrogen GasH HN

H

HHN HH

HN H

OH

H

NO

N NNOO N ON

ON

OO

OO OH

HN N O

H

H

2NH3 + NO H2ON2 ++ NO2 2 3

SCR CatalystDecomposed DEF mixed with exhaust gas

Clean Exhaust Gas


How SCR Works 4: Ammonia Removal ASC removes ammonia (NH3) that ‘slips’ past the SCR catalyst during any sudden

SCR catalyst temperature increase due to higher engine loads Flow through substrate coated with oxidation catalyst reduces

NH3 gas to below 25-ppm

Ammonia Slip

Catalyst

Clean Exhaust Gas

Water

Nitrogen Gas

SCR Catalyst

Ammonia HHN H

Oxygen

HHN H

NH3 N2 + H2O+ O2

HH

HNNN

H HASC


SCR: Multi-Catalyst Design Twin-SCR catalysts provide more efficient surface area and exhaust gas flow System capable of achieving over 90% NOx conversion Separate slip-catalyst removes any remaining ammonia from exhaust gas

SCR general representation


SCR - Enhanced Insulation Latest insulation techniques maintain optimum temperature throughout system to achieve higher NOx conversion



SCR – Open Loop Control

Sensor Table

Tier 4 Final utilizes latest high precision monitoring technology Dynamic ‘Open loop’ control doses DEF in proportion to engine out NOx levels

to target maximum NOx conversion efficiency Allows aftertreatment to function more efficiently while monitoring NOx levels,

exhaust flow rate, SCR temperature and DEF injection

Temperature Sensor

Temperature Sensor


High precision sensors for: 1. Temperature2. NOx


SCR – Robust Packaging Compact assembly gives better integration to OEM chassis in tight spaces Robust design with fewer parts & higher rigidity for off-highway applications Broad selection of inlet & outlet orientations

Patented spherical marmon sealing on inlet/outlet and all internal connections provides leak-resistant system integrity



SCR: Enhanced DEF Mixing Decomposition Reactor is designed for enhanced DEF spray mixing ahead

of SCR catalyst Horizontal & vertical mounting options

DEF Dosing Unit Injector

Insulation

Inlet MixerExhaust Flow

DEF (Urea) Decomposition

DeComp Reactor


DEF (or AdBlue) is a solution of 32.5% high purity urea and 67.5% deionized water Acts as a reactant to deliver

ammonia to the SCR catalyst Safe, stable and easy to handle:

– Non-toxic– Non-polluting– Non-flammable– Non-hazardous

AirShieldTM DEF available from Cummins Filtration


2.5 gal. bottle

330 gal. tote

55 gal. drum

Diesel Exhaust Fluid

DEF Availability Rapidly expanding DEF

supply base with rapidly growing on-highway use Typically 70% the cost of

diesel – varies considerably with package sizeMany DEF suppliers in the

market Wide range of storage and

dispensing equipment options


DEF Tank/Pump

Engine ECM controls DEF dosing and constantly monitors SCR system to achieve lowest possible dosing rates while maximizing NOx reduction

Low DEF Consumption

DEF Doser & Decomposition Reactor enhance spray pattern mixing

SCR system – better insulated and designed for more efficient low temperature NOx conversion

Latest generation SCR system for Tier 4 Final enables an average DEF dosing rate of just 3% to fuel used Dosing rate is determined by duty-cycle


Introducing CES Tanks and Lines

Cummins Emission Solutions (CES) now offers DEF Tanks and Lines 5 yrs / 3000 hrs warranty Serviced through the same

Cummins worldwide claims system 5000+ hours of field testing across

diverse off-highway applications and counting… 20+ prototypes tanks and lines

systems sold to multiple OEMs


For more information, visit the Cummins Emission Solutions web site,

cumminsemissionsolutions.com

CES Product Offering

EcoFit Urea Tanks feature a full tank assembly with header unit and sensors, which monitor and maintain accurate urea level, temperature and urea quality– Available in 5,10,15 and 30 gallons in portrait and landscape shapes

Heated DEF lines with connectors (pressure, suction, throttle) – 0.5 meter to 3.0 meter in 0.5 meter increments

Coolant flow control valve


Tank Assembly Benefits

Robust urea-quality sensing technology, designed with the required vibration durability to withstand rough terrain and steep gradients High-efficiency filtration, to eliminate small foreign particles,

improving system reliability Temperature-sensing technology, providing freeze-

prevention control Tank ventilation, allowing for appropriate tank expansion and

compression, providing flexibility for operation across a wide range of altitudes and environments





Agenda


Tier 4 Final Product Architecture and Features

QSB5 QSB7 QSL9

DOC-SCR

Tier 4 Final – Product Offering

Competitive power density

Simple aftertreatment configuration

Consistent architecture across the power ranges

Single, integrated engine & aftertreatment controls across power range

Dual speed capability as standard

Improve fuel efficiency

Flexible mounting through multiple AT configurations


QSB5 Tier 4 Final

Achieves Tier 4 emissions standards using Cooled Exhaust Gas Recirculation (EGR), Selective Catalytic Reduction (SCR) and the Diesel Oxidation Catalyst (DOC) The new Variable Geometry Turbocharger

manages the cooled EGR flow across the entire load range Provides a cleaner and more efficient

combustion resulting in better fuel efficiency compared to Tier 3 engine


∆ P sensors for EGR Measurement

DOC SCRAMOX

DEF Mixer

SCR and AMOX catalyst

DEF

Air Intake

Direct flow air cleanerwithTBAP Sensor

CA

C

EGR Cooler

QSB5: System Architecture

67

New for Tier 4 Final


QSB5 Tier 4 Final OverviewTier 3 Tier 4i Tier 4F

Ox Control In-Cylinder Cooled EGR Cooled EGR + SCR

PM Control In-Cylinder CCC DOC

Fuel System Crin 1.6 Crin 3 Crin 3

Intake Air System OEM Specified Direct Flow Direct Flow & IAT

Air Handling Wastegate VFT VGT

Grid Heater Optional Mandatory Mandatory

ECM CM850 CM2250 CM2350

Wire Harness PGI PGI PGI

Controls Interface Hardwired or J1939 J1939 J1939

System Voltage 12V or 24V 12V or 24V 24V

Crankcase Open Open with coalescing filter Open with coalescing filter


QSB7 Tier 4 Final Achieves Tier 4 emissions standards using

Cooled Exhaust Gas Recirculation (EGR), Selective Catalytic Reduction (SCR) and Diesel Oxidation Catalyst (DOC)

The patented Variable Geometry Turbocharger enhances response, providing exact boost across the operating range. Sliding nozzle design increases reliability and durability Provides a cleaner and more efficient

combustion resulting in better fuel efficiency compared to Tier 3 engine


QSB7 Tier 4 Final Overview

Tier 3 Tier 4i Tier 4 Final

NOx Control In-Cylinder Cooled EGR Cooled EGR & SCR

PM Control In-Cylinder DOC & DPF DOC

Fuel System Crin 1.6 Crin 3 Crin 3


Air Handling Wastegate VGT VGT


ECM CM850 CM2250 CM2350

Wire Harness Industrial w/ optional PGI PGI PGI


System Voltage 12V or 24V 24V 24V

Crankcase OpenOpen with Coalescing

FilterOpen with Coalescing

Filter


QSL9 Tier 4 Final

Achieves Tier 4 emissions standards using Cooled Exhaust Gas Recirculation (EGR), Selective Catalytic Reduction (SCR) and Diesel Oxidation Catalyst (DOC) Incorporates Cummins XPI Extra-High

Pressure Injection fuel system providing cleaner, more efficient combustion and improved response, resulting in better fuel efficiency compared to Tier 3 engine


QSL9 Tier 4 Final Overview

Tier 3 Tier 4i Tier 4 Final

NOx Control In-Cylinder Cooled EGR Cooled EGR & SCR

PM Control In-Cylinder DOC & DPF DOC

Fuel System CCR/Crin 1.6 XPI XPI


Air Handling Wastegate VGT VGT


ECM CM850 CM2250 CM2350

Wire Harness Industrial w/ optional PGI PGI PGI


System Voltage 24V 24V 24V

Crankcase OpenOpen with Coalescing

FilterOpen with Coalescing

Filter


EGR-

Cool

er

TT

NO

x

DOC

TT

DO

C

DEF Doser,Module

SCR

AM

OX N

Ox

SCR

QSB7 and QSL9 T4FG-Drive Architecture


Agenda





Tier 4 Final Operations & Maintenance

Operator Guidelines

1. Ultra-Low Sulfur Diesel Fuel (ULSD) Cummins Tier 4 Final engines must be operated on

ULSD with a maximum sulfur content of 15 ppm or less


Operator Guidelines

2. Low Ash Engine Oil Ash from in-cylinder combustion can impact the

performance of your aftertreatment system Using a low-ash engine oil promotes cleaner

combustion, and helps the aftertreatment system perform optimally

Recommended engine oils such as API CJ-4 or ACEA-E9 engine oil should be used


Operator Guidelines

3. Diesel Exhaust Fluid (DEF) DEF (known as AdBlue in Europe) is a critical element of

the Tier 4 Final aftertreatment system The DEF you purchase should meet and display

certification for the American Petroleum Institute (API) in North America

- DEF is widely available throughout North America and Europe


Operating Guidelines

Intake Air Throttle significantly improves ability of the Tier 4 Final engine, to maintain necessary exhaust temperatures

Cummins recommends avoiding extended operation in the extreme low load & low ambient conditions


AEB010259Zone 1 – Cummins recommends operating outside Zone 1 for maintaining optimum exhaust temperature Zone 2 – Avoid prolonged operation to minimize long-term degradation

SCR, DEF & EPA Inducements

Selective Catalytic Reduction is the most widely used and most effective technology to meet Tier 4 Final NOx levels

Requires using Diesel Exhaust Fluid (DEF) EPA mandates ‘Inducements’ from aftertreatment related faults, including

DEF mis-management

Cause Warnings (Yellow Lamp)

Final Inducement(Red Lamp)

DEF Level 10%, 5%, 2.5% tank levels 30 min after DEF Gauge reads 0%

DEF Quality 3.0 Hours 1.0 Hour

DEF Tampering or Malfunction

3.0 Hours 1.0 Hour

EGR Off 3.0 Hours 1.0 Hour

SCR Off 3.0 Hours 1.0 Hour


* Maximum of 4 restarts allowed every 15 minutes after first shutdown after final inducement* No more restarts allowed after 1 hr / 4 restarts

Maintenance Intervals

Air Filter (Direct Flow):Check restriction gaugeReplace primary & secondary filter if needed

3 months or 250 hours

Lube Oil, Lube Filter 6 months or 500 hoursFuel Filter 6 months or 500 hoursCrankcase Breather 2000 hoursDEF Dosing Unit Filter 3 years or 4500 hoursOverhead Set 4 years or 5000 hoursCummins Compact Catalyst (DOC) No scheduled serviceSelective Catalytic Reduction No scheduled service


Performance Validation

Tier 4 Interim to Tier 4 Final Comparison


Tier 4 Interim to Tier 4 Final Comparison


Validation Results Over 28,000 hours of testing and validation 15,000 out of 28,000 hours are from field test Field testing profile are broken down in graphic/bullet below

- 65% of field test hours under 30% load- 40% of field test hours below freezing temp


0% load, 20%

less than 10%, 19%

less than 30%, 15%

greater than 50%, 32%

Pump Jack, 14%

Load Profile (% Test Hours) less than 0 F2%

0-10 F15%

11-20 F11%

21-30 F17%31-40 F

21%

41-50 F12%

greater than 50 F22%

Temp. Profile (% Hours)

Pump Jack and Cold Weather Test Results

Steady State and Pump Jack Testing– For Regeneration, DOC-in temperature should be 250C or

greater• Graphs bellow show capability at various low load and low ambient

temperature conditions as well as pump jack cycle simulation


Further Resources & Contacts

Further Resources

Cummins G-Drive Website– http://www.cumminsgdrive.com/

Global Customer Engineering Website– https://gce.cummins.com/

Smartphone Apps– Forward to Final Toolbox - http://cumminstoolbox.com/web/

– Tier 4 Operator Guide - http://cumminsengines.com/tier-4-app

– Available in both Google Play and iTunes App stores


Appendix

Lamps: EPA Inducements












Inducement Restart Limits

15 mins

15 mins

15 mins

15 mins

First shutdown due to final inducement (FC3931)

Restart#1

Restart #2

Restart #3

Restart #4

1 hr

No more restarts allowed

after 1 hr / 4 restarts


Documents

tier 4 final presentation - gce.cummins.com · Common controls across all Cummins Tier 4 Final Engine ... Increased useful engine operating speed range 3. ... SCR systems supplied