Cummins Gearing Recommendations 2015 On-Highway US and Canada Products 3.31.2015 Cummins EBU Marketing/Technical Sales Mario Sanchez-Lara
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
* Certain applications may allow for cruise speed below minimum RSG Speed (i.e. Smart Advantage)
*
mph
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.
New Integrated Powertrain
– SmartAdvantage
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
• 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
SmartAdvantageLinehaul : Up to 80,000 lbs GCVW
12Insert Data Classification
RPM
Linehaul: Up to 85,000 lbs GCVW
13Insert Data Classification
400-475 HP
• For ISX15 with less than 1550 lb-ft of torque:
• Maximum fuel economy is 1400-1500
• Balance is 1500-1600 rpm
RPM
Heavy Haul: 86,000 and 140,000 lbs GCVW
14Insert Data Classification
400-475 HP
RPM
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 Family 2 and 3 455-600hp Gearing
• 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”
17Insert Data Classification
Linehaul: Up to 110,000 lbs GCVW
485-600 HP
RPM
18Insert Data Classification
VocationalHeavy Haul:86,000 and 140,000 lbs GCVW
485-600 HP
RPM
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
Linehaul: Up to 85,000 lbs GCVW
20Insert Data Classification
310-425 HP
RPM
Vocational Ratings
21Insert Data Classification
320-450 HP
RPM
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
Vocational and Linehaul: Up to 66,000 lbs GCVW
23Insert Data Classification
330-380 HP
RPM
Linehaul: Up to 66,000 lbs GCVW
24Insert Data Classification
260-300 HP
RPM
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
Pickup and Delivery: Up to 33,000 lbs GCVW
26Insert Data Classification
200-325 HP
RPM
27Insert Data Classification
Pickup and Delivery: Up to 50,000 lbs GCVW
200-325 HP
RPM
Vocational Ratings
28Insert Data Classification
200-325 HP
RPM
Spec’ing Natural Gas
Powertrains
2
9
Natural Gas
30Insert Data Classification
Heavy Duty Engine
Up to 80,000 Lbs GCVW
Great for mixer, dump truck, refuse,
regional-haul and LTL applications
31
Applications
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
33
Linehaul: Up to 80,000 lbs GCVW
34
320-400 HP
RPM
35Insert Data Classification
Vocational Ratings: Up to 80,000 lbs GCVW
320-350 HP
RPM
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
37
38Insert Data Classification
Linehaul : Up to 66,000 lbs GCVW
250-300 HP
RPM
39Insert Data Classification
Vocational Ratings : Up to 66,000 lbs GCVW
250-320 HP
RPM