How fuel-agnostic engine platforms can reduce carbon emissions of commercial transportation

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The transportation sector emits five million metric tons of CO2 a day in the U.S. This is about 36 pounds of carbon every day for each person in the U.S. 

Passenger cars, motorcycles, heavy-duty trucks, trains, boats, and airplanes all contribute to this carbon emission, but at varying levels. When you look at the increased greenhouse gas (GHG) emissions among these transportation applications, you find some unexpected trends. 

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For example, aircrafts, ships, and boats collectively are generating less GHG emissions compared to 30 years ago.  

Meanwhile, medium and heavy-duty trucks collectively had the largest increase in GHG emissions through the same period. In fact, the GHG emissions of trucking went up by 93%. 

Transportation GHG emissions by source in the U.S.
Medium and heavy-duty trucking’s rising emissions

There are a range of technologies to alter this emissions trend for trucking. Fuel cells and batteries are two of these. Currently, they are financially and operationally viable in few medium and heavy-duty trucking applications.  

Fuel agnostic engine platforms is another technology to alter this trend, and already financially and operationally viable in a wide range of medium and heavy-duty trucking applications.  

What is a fuel-agnostic engine platform? 

A fuel-agnostic engine platform offers different versions of the same base engine. The bottom ends of the engines look the same, and unique cylinder heads are designed to accommodate a different low or zero carbon fuel. Each engine within the platform can run on one specific fuel; different than fuel flexible engines that can run on multiple fuels. These different engine versions have a high degree of parts in common. 

Let’s see how these fuel agnostic engine platforms can reduce or eliminate carbon emissions. 

 

 

How to reduce emissions by becoming fuel-agnostic and using engines? 

Fuel-agnostic engine platforms reduce carbon emissions by enabling vehicles to run on low to zero carbon fuels using the familiar internal combustion engine technology.  

Natural gas is one of these low carbon fuels. Today, you can already order natural gas engines that emit 90% less NOx and 16% less CO2 compared to the current EPA standards. These engines can even achieve carbon-negativity when fueled with renewable natural gas (RNG).   

Then comes hydrogen, a zero carbon fuel, at the tailpipe. You can use internal combustion engines and use hydrogen as the fuel to power your fleets. Most recently, we have announced collaboration with Werner Enterprises to integrate hydrogen internal combustion engines in vehicles. We are optimistic that we will bring hydrogen engines to more customers in near future.  

These are great developments in terms or reducing and eliminating carbon emissions. Meanwhile, you might already be asking yourself how becoming fuel-agnostic could impact reliability and mission accomplishment of vehicles.  

Reliability and mission accomplishment while being fuel-agnostic 

The choice between reliability and reduced emissions is not a trade-off. I believe becoming fuel-agnostic by using internal combustion engines offers the ideal balance of reliability and reduced carbon emissions.  

These fuel-agnostic platforms are designed and built-upon the learnings extracted from millions of diesel engines manufactured and in-use. We also leverage today’s digital technologies to extract insights specific to each engine duty cycle, and leverage these to design reliable fuel-agnostic platforms. 

Moreover, technicians’ existing familiarity with these fuel-agnostic platforms strengthens the day-to-day reliability of these engines. Yes, there are service and maintenance tasks that vary by fuel type, but most of these tasks are familiar to technicians. 

This brings us to the last consideration: Economic affordability of fuel-agnostic engine platforms. 

Reduced cost of adopting low to zero carbon emission technologies 

Vehicle redesign, manufacturing process changes, and technician training are some of the costs to adopt new technologies for vehicles. Use of internal combustion engines to become fuel agnostic brings important financial advantages for OEMs and fleets. 

  • Minimal vehicle redesign: Engines within a fuel-agnostic platform have a common product architecture. For OEMs, there is less need to alter vehicle design to accommodate different versions of the same engine family. Meanwhile, there will still be design differences among engines using different fuels when it comes to fuel tanks and aftertreatment systems. 
  • Limited manufacturing process changes: The need to re-tool production lines and create manufacturing processes to accommodate engines that are a part of a fuel-agnostic platform is lower than adopting a completely new power technology.  
  • Reduced incremental technician training: Engines within a fuel-agnostic platform look and feel like the products technicians are already familiar with. This familiarity results in service and maintenance similarities for technicians already capable to work on diesel counterparts.   

Fuel-agnostic engine platforms offer a unique combination of benefits for OEMs and fleets interested to reduce their vehicles’ emissions. The immediate reduction in carbon emissions, economic viability, and reliability are three of the most critical benefits of fuel-agnostic engine platforms. 

Jonathon White

Jonathon White is Vice President of Engine Business Engineering at Cummins Inc. He has more than 30 years of experience in the development and manufacturing of diesel and natural gas engine powertrain systems. He is currently responsible for Engine Business engineering activities across product platforms life cycle, including leadership for the Engine Business Platform Teams, Operational Engineering, Customer Service Engineering and Product Improvement, Technical Operations and Powertrain Engineering organizations.

Cummins Custompaks are being used for water management as Thailand struggles with its water crisis

CustomPak on site

Water crisis

Sixty Cummins Inc. CustomPaks are in service in Thailand as part of a critical water management plan aimed at easing the country’s water crisis – a crisis that has caused enormous economic and social damage and stirred conflict among communities.

Over the past several decades, Thailand has continually faced water problems caused by severe drought. Water reserves in dams and reservoirs are insufficient while water resources are often contaminated with toxins caused by urban communities and the industrial and agricultural sectors.

Severe flooding is a threat, too, at a time when the realities of climate change are hanging over the country.

As a result, the allocation of precious water resources, which must be shared among various stakeholders including new and existing industry, large and small agriculture, and cities and villages has become a flashpoint.

Kittithanapat Engineering Co. (KTP), has been involved in the water management system since 1996, working closely with authorities such as the Royal Irrigation Department, Department of Water Resources, Bangkok Metropolitan Authority and others.

CustomPaks on site

600 hp CustomPaks

To help KTP meet its often urgent requirements, Cummins DKSH (Thailand) has recently supplied 60 Australian-built CustomPaks – 45 powered by Cummins’ X15 engine rated at 600 hp, and 15 powered by the QSL9 rated at 325 hp. These fully self-contained powerpacks are emissions certified to Tier 3.

The CustomPaks are coupled to hydraulically-driven, large-volume submersible water pumps sourced by KTP from US company Moving Water Industries (MWI); KTP is the exclusive distributor in Thailand for these MWI Hydroflo pumps.

Prior to Cummins’ involvement, KTP was using another diesel engine brand but service support wasn’t up to the standard required.

Long-serving KTP engineer Kittisak Thanasoot says Cummins DKSH’s reputation for technical and aftersales support along with the reliability of the Cummins product were a key reason behind KTP’s decision to specify the CustomPaks for the Royal Irrigation Department.

The ability of Cummins DKSH to respond to short delivery times was also important.

“Supplying large quantities of high horsepower diesel engines for emergency situations such as flash flooding can be a challenge for KTP,” says Kittisak Thanasoot.

“Responding to the needs of the government agencies to manage such problems in a timely manner and with least impact on communities, KTP has found the answer in our partnership with Cummins DKSH.”

Power, pride and passion

Parked semi truck

The switch back to Cummins power has been beneficial for iconic New Zealand company Uhlenberg Haulage. It's all about whole-of-life costs.

Uhlenberg Haulage is closing in on 60 years in business, having been founded in 1966 by Mike and Carol Uhlenberg.

Based in Eltham, Taranaki, in New Zealand’s North Island, the operation is today owned and operated by their sons Chris, Daryl and Tony Uhlenberg.

Describing the Uhlenbergs as “old school family truckies”, Daryl talks about the company’s time-honored journey with a definite tone of pride, especially the work of his parents in laying the foundations for what is today an iconic fleet in its own right.

Cummins Inc. made its debut in the Uhlenberg fleet in 1971 with an NH250 powering a second-hand Kenworth K923 used in logging. A second Kenworth, a new W924 with a Cummins NTC335, followed soon after hauling an LPG tanker.

The Uhlenberg operation today comprises 40 prime movers and a variety of trailing gear to cater for the myriad of a jobs the fleet is involved in.

A number of Peterbilts feature in the fleet although Kenworth is now the brand of choice with six new units to be delivered over the next 12 months to cater for business growth.

Cummins’ X15 Euro 5 engine rated at 550 or 600 hp is the preferred power specification, with 18 red engines currently in the fleet.

Uhlenberg family in front of truck

Whole-of-life support

“The switch to Cummins has been a very good experience for us. We have nothing but praise for the Cummins organization,” says Daryl.

“The whole-of-life picture is the key thing for us and we’ve got that nailed with the support we get from Cummins – parts availability, scheduled maintenance, life expectancy and in-frame rebuilds.

“So the red engines turn up, we run them to life, which is 900,000 to 1.2 million kilometers, and then Cummins does an in-frame overhaul in a timely manner. If there’s an issue, parts and support are close by.

“The support we get from Cummins Palmerston North is fantastic, second to none.”

Daryl recently looked under a Kenworth that was in the workshop for a service and was surprised to see no oil leaking from the one-million-kilometer X15. “I remember when I was a fitter we had to wear a raincoat when working under a truck,” he jokes.

Fuel agnostic

Acknowledging that the push to decarbonize is now “very real”, Daryl likes the idea of Cummins’ fuel agnostic concept where one base internal combustion engine, optimized to run on diesel, can also be customized to run on ultra-low and zero-carbon fuels like renewable natural gas and hydrogen.

“My father was a pioneer of linehaul trucking in New Zealand and he always embraced new technology. He was never scared of it,” he says.

“I tend to be a little more cautious but I can see where a 500 hp natural gas or hydrogen engine would work for us in short haul applications,” he admits. “We’re certainly willing to look closely at these alternative fuel technologies when suitable infrastructure is in place.”

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