INTRODUCING CE SERIES WITH CUMMINS · PDF fileThe VGT Turbocharger’s actuator has ... Configuration: Inline 6-Cylinder Displacement: 409 in³ ... (Piezo injectors)

INTRODUCING CE

SERIES WITH

CUMMINS ISB6.7

OVERVIEW

1. Introducing the Cummins ISB6.7

2. Cummins ISB6.7 Features, Technology and Enhancements

3. The CE Engine Portfolio

INTRODUCING THE CUMMINS ISB6.7

What do you get when you take the industry’s best

selling medium-duty diesel engine and the most

popular conventional-style bus over the past

decade? A product that raises the bar.

A time-tested design that features the Cummins

SCR after-treatment system, the CE Series with

Cummins ISB6.7 will offer the durability and uptime

you demand while meeting EPA 2010 emissions.

As Cummins ISB6.7 joins an engine line-up that

includes the MaxxForce 7 and DT, IC Bus now

offers the widest choice of diesel powertrain

options in the bus industry.

BLUE DIAMOND JOINT VENTURE

Through our Blue Diamond JV, Navistar has extensive experience

designing and building trucks with the Cummins ISB6.7 Engine.

The Ford F650/750 Trucks, for which we have built over 20,000 units,

share a common chassis with the Navistar DuraStar truck Model.

This experience has enabled us to minimize the amount of time it took to

bring the ISB6.7 to market in the CE Series Bus. Customer’s can feel

confident that quality and performance will be top notch at Job 1.

These trucks are surpassing warranty and quality objectives and we

expect the same results with the CE Series.

CUMMINS ISB6.7 FEATURES,

TECHNOLOGY &

ENHANCEMENTS

MAJOR FEATURES

VGT™ Turbocharger

The patented design is widely recognized as the industry leader for

performance. Electric actuation improves precision and responsiveness. The

VGT Turbocharger also increases fuel economy and braking horsepower.

High Pressure Common Rail (HPCR)

Higher injection pressures produce quick throttle response at every rpm.

Optimized timing increases fuel efficiency, lowers emissions and enables

smoother, quieter operation.

Cummins SCR Aftertreatment System

Proprietary system consists of a Diesel Particulate Filter (DPF) and

Selective Catalytic Reduction (SCR) technology for near-zero emissions.

Single High-Capacity Electronic

Control Module (ECM)

A single ECM manages the engine and aftertreatment system for

optimum performance and fuel efficiency.

• The 2013 ISB6.7 gets some of the best

fuel economy of any engine in its

class. In 2013, the ISB6.7 gets up to 2

percent better fuel economy versus the

2012 model.

• The addition of an air-intake throttle

makes the Exhaust Gas Recirculation

(EGR) system more efficient, to

increase fuel economy and lower

operating costs.

FUEL ECONOMY

• Better Fuel Economy

– 2013 certification meeting the 2014 fuel efficiency and greenhouse gas standards

– Reduction in parasitic losses

• Better Reliability

– Continuous improvement

– NanoNet filter

• Better Customer Support

– Additional components covered with new Extended Coverage plans

2013 ENHANCEMENTS

BETTER RELIABILITY

A new ECM for the 2013 product controls the DEF

Dosing Valve and helps improve the overall efficiency

and reliability of the Cummins Aftertreatment System.

The VGT Turbocharger, EGR Crossover Tube and EGR

Valve Orientation have all been “on engine”

improvements. The VGT Turbocharger’s actuator has

been improved, the actuator controls the Variable

Geometry portion of the Turbocharger. Improving the

actuator leads to reliability and efficiency improvements

for the ISB6.7.

Another area of improvement of the ISB6.7 has been

with the EGR. The Crossover Tube allows for easier

installation for the OEMS and assists with the EGR flow.

The Valve and Valve orientation also assists with OEM

installation and has an internal seal that prevents water

leaking into the EGR Cooler.

EGR Crossover Tube And

EGR Valve Orientation

ECM

BETTER RELIABILITY

There has also been an EGR Crossover Tube routing

change which has lead to improvements in EGR reliability.

The Valve orientation change switched from a vertical

valve to a horizontal valve. There is also an addition of an

internal seal to protect against water intrusion.

The New ECM “2350” incorporates all changes needed to

meet the 2013 OBD requirements. The ECM “2350”

incorporates the DEF Doser Valve controls which helps

improve the reliability of the Cummins Aftertreatment

System.

VGT Turbocharger

BETTER RELIABILITY

Improvements to the

actuator, which controls

the VG section of the

Turbo, leads to improved

reliability.

• Over 100 specialists trained to provide the highest level

of professional service

• 24/7/365 Customer Support

• Dependable service support when you need us most

CUSTOMER SUPPORT

ISB6.7 TECHNICAL SPECIFICATIONS

Configuration: Inline 6-Cylinder

Displacement: 409 in³ (6.7L)

Bore and Stroke: 4.21 x 4.88 in

Compression Ratio: 17.3:1

Peak Horsepower: 260 @ 2600 RPM

Peak Torque: 660 @ 1600 RPM

Gov. Speed: 2600 RPM

Clutch-Engagement Torque: 400 (lb.-ft.)

Aspiration: Variable Geometry Turbocharger

Fuel System: High Pressure Common Rail

Lubricating System Capacity: 15L

Dry Weight: 1150 lb.

The technical specifications do not change from 2010 with the exception of the system weight. The overall system weight has increased due to an increase in the aftertreatment system weight.

ISB6.7 HP & TORQUE RATINGS

Horsepower (BHP @ RPM): 250 @ 2300

Torque (LB-FT @ RPM): 660 @ 1600

Gov. Speed (RPM): 2600

Clutch Engagement Torque: 400 lb-ft





Ratings range from 200-260 hp and 520-

660 lb-ft of torque.













Maintenance Item Normal Duty

Miles

Severe Duty

Miles

Hours Months

Oil and Filter 15,000 9,000 500 6

Fuel Filter 15,000 15,000 500 6

Coolant Filter 15,000 15,000 500 6

Standard Coolant 60,000 60,000 2,000 24

Valve Adjustment 150,000 150,000 5,000 48

Crankcase Breather

Filter

75,000 75,000 2,000 24

DEF Filter 200,000 200,000 6,500 N/A

Particulate Filter 200,000 200,000 6,500 N/A

ISB6.7 MAINTENANCE INTERVALS

ISB6.7 BASE WARRANTY

Base engine warranty coverage for Cummins school

bus applications includes virtually everything from

parts and labor on warrantable failures* to limited

progressive damage for both the engine and after

treatment system, with no deductible. Every

component from the block casting to the injectors to

the after treatment system is covered for 5

years/100,000 miles (160,935 km).

(*Warrantable failures are those due to defects in

Cummins materials or factory workmanship.)

Cummins has a wide variety of extended protection

plans available, including new 10-year extended

coverage options for school bus engines.

THE CE SERIES ENGINE

PORTFOLIO

KEY ENGINE DIFFERENCES

MaxxForce 7 Cummins ISB MaxxForce DT

• Parent Bore

• CGI engine block for

high strength without

added weight

• Ductile Iron bedplate

for strength

• EGR

• Parent Bore

• Great fuel economy

• Best selling medium

duty engine in the

industry

• Proven engine and

SCR aftertreatment

meets EPA 2010

• Long term durability and

rebuildability

• Wet sleeve design

• Replaceable valve

guide and seats

• EGR

Cummins ISB6.7 MaxxForce 7 MaxxForce DT

Configuration Inline 6 V-8 Inline 6

Horsepower 200 – 260 HP 220 – 260 HP 215 – 300 HP

Torque 520 – 660 lb-ft 560 - 660 lb-ft 560 – 660 lb-ft

Bore & Stroke 4.21 x 4.88 in 3.87 x 4.13 in 4.59 x 4.68

Displacement 409 in³ (6.7L) 390 in³ (6.4L) 466 in³ (7.6L)

Fuel Injection System Common Rail

(electro-mechanical)

Common Rail

(Piezo injectors)

Electro-Hydraulic Gen 2 Fuel

Injectors

Emissions Technology

Selective Catalytic

Reduction (SCR)

Exhaust Gas Recirculation

(EGR)

Exhaust Gas Recirculation

(EGR)

Parent Bore vs.

Sleeved Parent Bore Parent Bore Wet Sleeve

SUMMARY

• As Cummins ISB6.7 joins an engine line-up that includes the MaxxForce

7 and DT, IC Bus now offers the widest choice of diesel powertrain

options in the bus industry.

• The Cummins ISB6.7 is the best selling medium range diesel in the

industry and meets EPA 2010

• The Navistar and Cummins partnership offers unrivaled service and

support

• The expansion of our partnership with Cummins and the investment in

the CE demonstrates our commitment to leadership in the bus industry

Documents

INTRODUCING CE SERIES WITH CUMMINS · PDF fileThe VGT Turbocharger’s actuator has ... Configuration: Inline 6-Cylinder Displacement: 409 in³ ... (Piezo injectors)