Page 41: of Marine News Magazine (July 2016)

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PROPULSION: TECHNOLOGY

PPG’s custom-engineered solution ahead with installing it on the boat. Indeed, and back in April of 2015, therefore focused on the operating It was really impressive to stand there third party independent emissions conditions with the greatest emissions and see and feel all this heat coming testing completed at PPG’s Kent, outputs with a high priority on ves- out, but no exhaust or small amounts Wash. location show that the system’s sel operational reliability and keeping of it. That’s not scienti? c, but it is an emissions to be lower than any cur- weight and space claim to a minimum. important observation.” rently-operating passenger ferry in the

That’s because, unnecessary weight takes away from passenger carrying capacity, ef? ciencies and/or speed.

And, explains Gow, “It is very much a custom solution. Certainly, we had a proven product line through Hug that Pac Power was proposing, but the actual boxes that are in the boat, the big physical pieces – aside from elec- tronics – are all custom built to ? t the geometry that we had to work with.

Beyond that, the uptake that leaves engine room to eventually go to the stack impacts the look of the boat, passenger space and other issues.”

PPG’s Mossey says, “We watch what’s going on in the market very closely with regard to exhaust after- treatment systems technology – what works and what doesn’t, because it’s a differentiator in our company. We’re probably the only engine distributor who is working with the customer to provide a complete solution prior to the evolution of Tier 4. Now, that’s going to become a standard part of tier 4 engine packages.” Mossey adds, “We’ve achieved Tier 4-like perfor- mance, but it is not certi? ed and there are many reasons it’s not certi? ed.

That testing wasn’t speci? ed by the customer in the RFP.”

Jim Gow explains the goals of the aftertreatment system from the build- er’s perspective, saying, “The vessel isn’t certi? ed to Tier 4, but that wasn’t speci? ed in the contract. The contract set goals based on Tier Three, so it was a percentage of improvement beyond

Tier 3. The ? rst engine was set up at

Paci? c Power where running emis- sions tests were done on that engine to prove the system before we moved 41 www.marinelink.com MN

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