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Redefining Efficiency: Cummins ISX15 for 2016

Cummins is committed to making continuous improvements to all of its products and services. The 2016 ISX15 incorporates several new technologies and improvements. Below is a partial list of the key enhancements for 2016, organized into four main categories – regulatory changes, efficiency, maintenance and uptime – for your reference when working with customers.

Staying Ahead of Regulatory Changes

The 2016 ISX15 is compliant with 2017 greenhouse gas (GHG) regulations set by the U.S. Environmental Protection Agency (EPA) and the National Highway Traffic Safety Administration (NHTSA). The 2016 ISX15 also is compliant with 2016 On-Board Diagnostics (OBD) requirements for more stringent diagnostic monitors that verify the integrity of the emissions control system.

Increased Fuel Efficiency, Minimized Operating Costs

Traditionally, fuel costs have been the single largest line item in any trucking operation’s operating budget. Over the past six years, Cummins engineers have utilized innovative technologies and leveraged our fully integrated engine and aftertreatment systems to deliver incremental mpg gains each and every year:

  • 2013 – Reduced parasitic losses from pumps, combined with enhanced low-end torque, enables downspeeding (cruising at a lower rpm range for better fuel economy). Enhanced efficiency delivers a 3.5 percent fuel-economy gain.
  • March 2013 – The SmartAdvantage™ Powertrain is introduced, combining Cummins SmartTorque2 (ST2) with an Eaton® Fuller Advantage® automated manual transmission. Optimized shift strategy, in combination with class-leading low-end torque and the latest automation, ensure that engines spend most of their operating time within the sweet spot of the torque curve, providing a 3 percent to 6 percent fuel-economy gain, with best-in-class fuel economy validated by both third-party SAE-type III testing and real-world experience.
  • 2014-2015 – A naturally aspirated air compressor (NAAC) is designated as factory-standard equipment. This, together with optimization of Selective Catalytic Reduction (SCR), yields a 1.5 percent fuel-economy gain in line-haul applications, with up to a 2 percent improvement in regional-haul operations.
  • January 2016 – An improved turbocharger design provides an additional 0.3 percent fuel-efficiency gain.
  • 2016 – ADEPT™ technology with SmartTorque2 and optional SmartCoast™ features were added. This predictive cruise control uses “look-ahead” terrain data to deliver up to 3 percent better fuel economy, with the greatest benefit seen on routes across rolling terrain.

As illustrated in the chart below, the fuel-economy gains are cumulative, so any customer currently operating on a four- to six-year trade cycle who is considering the purchase of a vehicle equipped with a 2016 Cummins ISX15 will see a double-digit increase in fuel economy. A customer upgrading from a 2010 ISX15 to a 2016 ISX15 with SmartAdvantage and the full ADEPT package can expect their total fuel economy to increase by as much as 14.8 percent. Customers transitioning from trucks with competitive engines will see an even greater reduction in fuel usage and total operating cost.


Reduced Maintenance – Lowering The Total Cost of Ownership

In addition to fuel economy improvements, Cummins continues to lengthen intervals for and even eliminate routine maintenance functions. Changes for 2016 include the following:

  • Oil pan with bottom drain – Earlier editions of the ISX15 have two side drains for the main sump and one center drain for the mini-sump. Sometimes, when oil was being drained, a small amount of oil would remain in the main sump. Adding a centered bottom drain in the main sump reduces the amount of retained oil to almost zero. Ensuring that all used oil is drained before refilling the pan with new oil helps eliminate the potential for oil overfilling, and oil degradation is reduced.
  • Diesel Particulate Filter (DPF) – Cummins 2016 ISX15 now allows for an extended DPF ash cleaning interval – up to 500,000 miles (804,672 kilometers) – for conventional line-haul applications with fuel consumption above 5.5 miles per gallon. Also, any ISX15-powered vehicle with Electronic Control Module (ECM) software Phase or later can now utilize the Maintenance Lamp as an indicator of when the DPF needs cleaning, safely extending required maintenance beyond the published intervals.

Increased Uptime – Keeping Trucks on the Road

The productivity of a driver and a vehicle depends on the reliability and endurance of the engine. Changes to Cummins ISX15 for 2016 make the engine go the extra mile to increase uptime and improve productivity.

  • Engine block with increased counterbore in bolt holes – The depth of the counterbores on the inboard head bolt holes in the block were increased from 9mm to 18mm, which reduces stresses in the block and head assembly. It also reduces engine oil consumption.
  • Piston ring gap reduction – The end gaps of the top piston ring and oil ring were reduced, and the number of oil holes in the oil ring was increased. The redesigned piston rings, in combination with the increased counterbore, provide a reduction in oil consumption of up to 30 percent compared to the 2015 ISX15.
  • Nylon low-pressure fuel lines – Steel-braided Teflon® low-pressure fuel lines have been replaced in 2016 with nylon lines. These nylon lines use quick-connect fittings in place of the existing banjo fittings, wherever space permits. This allows for reduced installation time, with easier serviceability.

Redefining Leadership – Cummins ISX15 for 2016

These are just some of the improvements we would like you to share with your customers. You’ll also want to remind them that in addition to being the fuel-economy leader, Cummins ISX15 continues to lead the way in performance, engine braking, service, support and resale value.

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