Cummins Gearing

Recommendations

2015 On-Highway US and

Canada Products
3.31.2015
Cummins EBU Marketing/Technical Sales
Mario Sanchez-Lara
What matters?
 Vehicle Mission
 Understanding the customer’s
equipment and duty cycle

 Gearing: Transmission and Axle

 Electronic Engine Features and
Parameters
Vehicle Power Consumption
Everything Matters:
 Aerodynamic Drag
 Rolling Resistance
 Vehicle Accessories and
Mechanical Losses
 Grade Resistance
 Driveline Efficiency

3
Application Guidelines Terminology

 Startability
– The maximum grade (%) on which a vehicle could accelerate from rest
during an idle away (closed throttle) start
 Peak Torque Gradeability
– The maximum grade that a vehicle could ascend while operating at 100
% throttle in top gear at peak torque rpm
 Cruise Gradeability
– The maximum grade that a vehicle could ascend at a specified cruise
speed while operating in top gear at 100 % throttle
Application Guidelines and Minimum
Performance Recommendations

mph

*
* Certain applications may allow for cruise speed below minimum RSG Speed (i.e. Smart Advantage)
Guidance for New Equipment
 Replacement Equipment
– Existing equipment should dictate “Minimum Performance Requirements”
– If tradeoffs are expected, provide customer with adequate explanation and
obtain their buy-in
 Driveability (Driver Satisfaction)
• Startability
• Torque Peak Gradeability
• Cruise Gradeability
 Total Cost of Ownership (Owner Satisfaction)
• Operational Efficiency and Fuel Economy
• Maintenance
 Cummins Gearing Criteria
 2013 / GHG 2014 Certified Engines:
– Max Fuel Economy:
• Aim to maintain the engine operating in a low rpms range,
producing adequate power to accomplish the job in an efficient
manner, This favors fuel economy over some performance
characteristics (i.e. increase in shifting).
– Balance:
• Aim to operate the engine in a rpm range where horsepower is
increasing while peak torque is readily available. This is a good
compromise for customers seeking decent fuel economy with
solid performance characteristics.
– Performance
• Aim to operate the engine in a rpm range where peak power is
readily available. This favors productivity over operating costs.
ISX Family 1 400-475hp Gearing

 Once the optimal engine is determined, the right

gearing will enable the vehicle to meet the
customer’s needs and objectives.
 Gearing Gauge / Criteria:
– Max Fuel Economy
– Balance
– Performance

 New Integrated Powertrain

– SmartAdvantage

• ISX15 450 hp, 1650 lb-ft torque rating

Fuel Economy Impact
 NAAC:
– On average 1% improvement for line-haul
applications
– Up to 2% improvement in regional hauling with
stop and go routes

 “Boosted” configuration
– Suitable for applications requiring enhanced Air
Compressor performance
Naturally Aspirated Air Compressor:
Installation & Performance
 Preferred option for 2013 ISX15 400-450 hp engines
– Line-haul and Regional-haul applications
 Simple hardware update:
– Plumbing only change
– Unique option number
 Performance trade-off
– More time (vs. Boosted) to target operating pressure
• 40-60 seconds longer to achieve 145 psi (worst case scenario)
– Meets standard FMVSS-121
• 25 seconds to build pressure from 85 to 100 psi
ISX15 Family 1 400-475hp Gearing
 1160-1240 RPM
– SmartAdvantage Integrated Powertrain
• VAM / ST2
 1250-1425 RPM
– Extreme line haul / Regional haul - LTL
• Manual transmissions / lower gross weights
 1500-1650 RPM
– Performance / Heavy haul
 1600-1750 RPM
– Vocational / Off road
SmartAdvantage
Linehaul : Up to 80,000 lbs GCVW

RPM
Insert Data Classification 12
 400-475 HP
Linehaul: Up to 85,000 lbs GCVW

RPM
• For ISX15 with less than 1550 lb-ft of torque:
• Maximum fuel economy is 1400-1500
• Balance is 1500-1600 rpm
Insert Data Classification 13
 400-475 HP
Heavy Haul: 86,000 and 140,000 lbs GCVW

RPM

Insert Data Classification 14

ISX15 Family 2 and 3 455-600hp Gearing
 These ratings provide value for customers
who need power and torque
– Heavy loads
– Mountainous terrain and/or steep grades
– Tight route cycle times
 Use these ratings where power and torque are
needed. Do not focus on fuel economy gearing

 Gearing Gauge / Criteria:

– Balance
– Performance
– Fuel Economy

• ISX15 525 hp, 1850 lb-ft torque rating

ISX15 Family 2 and 3 Gearing
 1350- 1400 RPM
– Owner Operator wanting higher average
road speeds
 1400 to 1550 RPM
– Premium fleets / Higher gross weights
 1550-1800 RPM
– Heavy Haul / Off road or Vocational

 Do not focus on fuel economy gearing,

Do not “Downspeed”
 485-600 HP
Linehaul: Up to 110,000 lbs GCVW

RPM

Insert Data Classification 17

 485-600 HP
Vocational
Heavy Haul:86,000 and 140,000 lbs GCVW

RPM

Insert Data Classification 18

ISX12 310 – 425hp Gearing
 1370 RPM for Linehaul fleets
– High % of interstate operation (85% to 95%)
– Want maximum fuel economy
– Lighter loads (62K to 70K)

 1400 to 1450 RPM for Regional / LTL fleets

– Supports two lane / Rural operation
– Good mix of fuel economy and performance

 1500 to 1900 RPM for Vocational / Heavy Haul

– Soft surface operation
– Performance for high GVW
 310-425 HP
Linehaul: Up to 85,000 lbs GCVW

RPM

Insert Data Classification 20

 320-450 HP
Vocational Ratings

RPM

Insert Data Classification 21

 Applications
 Two sets of gearing guidelines for the ISL9 are based on the available peak torque
 Regional Haul
– Suburban Delivery
 Vocational
– Pick up and Delivery
– Dump Truck
– Refuse Truck
– Concrete Mixer
 Up to 66,000 lbs
 330-380 HP
Vocational and Linehaul: Up to 66,000 lbs GCVW

RPM

Insert Data Classification 23

 260-300 HP
Linehaul: Up to 66,000 lbs GCVW

RPM

Insert Data Classification 24

 Applications
 Two sets of gearing guidelines in Linehaul applications are
based on available peak torque and GCW
 Vocational Applications
– Utility
– Step Vans
– Pick up and Delivery
 Regional Haul
– Suburban Delivery
– Beverage Distribution
 Up to 50,000 lbs
 200-325 HP
Pickup and Delivery: Up to 33,000 lbs GCVW

RPM

Insert Data Classification 26

 200-325 HP
Pickup and Delivery: Up to 50,000 lbs GCVW

RPM

Insert Data Classification 27

 200-325 HP
Vocational Ratings

RPM

Insert Data Classification 28

Spec’ing Natural Gas
Powertrains

2
9
Natural Gas

Insert Data Classification 30

 Applications

 Heavy Duty Engine

 Up to 80,000 Lbs GCVW
 Great for mixer, dump truck, refuse,
regional-haul and LTL applications

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 400 HP Gearing

32
 UltraShift PLUS
 Eaton approved package
 For Linehaul Active Shifting (LAS) and Multipurpose High Performance (MHP)
transmission models
 Linehaul and Regional Haul only

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 320-400 HP
Linehaul: Up to 80,000 lbs GCVW

RPM

34
 320-350 HP
Vocational Ratings: Up to 80,000 lbs GCVW

RPM

Insert Data Classification 35

 Applications
 MidRange Engine
 Pickup and Delivery Truck
 Vocational
 Up to *66,000 lbs GCVW
 Less than 60,000 miles
per year

*Refuse Packer ,Crane / Cherry Pickers, Concrete Ready Mixer allow up to 80,000 GVW
 320 HP Gearing

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 250-300 HP
Linehaul : Up to 66,000 lbs GCVW

RPM

Insert Data Classification 38

 250-320 HP
Vocational Ratings : Up to 66,000 lbs GCVW

RPM

Insert Data Classification 39