Displacement Vs. Substitution: What’S The Difference?

Displacement

Displacement Vs. Substitution: What’S The Difference?

HOW TO CALCULATE YOUR DYNAMIC GAS BLENDING SAVINGS

You know that well service engines with Dynamic Gas Blending™ save you money by letting you burn gas and reduce diesel fuel consumption. Exactly how much less diesel will you burn? That’s where you’ll start hearing the terms “substitution” and “displacement.” They don’t mean the same thing, so it pays to understand the difference.

  • Diesel substitution is calculated based on the percentage of total energy required to run a DGB engine. In other words, what percent is gas and what percent is diesel? A 70% diesel substitution rate doesn’t mean you’re only burning 30% diesel fuel, though. You’re likely burning more. That’s because the energy value of natural gas varies depending on the source — and that’s why substitution isn’t the best way to measure your savings.
  • Diesel displacement is calculated based on the total volume of fuel required to run a DGB engines. In other words, how many gallons of gas and how many gallons of diesel? So when we say the Cat® 3512E Tier 4 Final DGB engine has a maximum diesel displacement rate of 85%, that means it’s very likely you’re burning just 15% diesel fuel — and your costs will go down accordingly. Displacement is a much easier number to measure and a simpler metric for you to validate on your frac trailers.

If you’re still unclear on the difference, take a look at infographic for a simple, visual explanation.

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3512E Tier 4 Final Dynamic Gas Blending Engine

The first in the industry certified to U.S. EPA Tier 4 Final, this innovative dual-fuel engine automatically maximizes the amount of gas used to displace diesel. You save big on fuel without giving up the performance of diesel.

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Save Fuel. Reduce Emissions. All Without Sacrificing Diesel Performance.

Cat® Dynamic Gas Blending engines for well service let you operate on the industry’s wide range of fuels. You could cut your diesel consumption by as much as 85%.

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Meet the 3512E Well Service Engine with Dynamic Gas Blending

Cat®  3512E Well Service Engine with Dynamic Gas Blending

No engine on the market can match the 3512E Tier 4 Final with Dynamic Gas Blending for Well Service. Industry-best diesel displacement and fuel flexibility mean you save more without giving up diesel performance.

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