DIESEL GALLON EQUIVALENT
Despite recent ;at sales, CNG remains one of the most
successful alternative fuels in the U.S.
Since 1994, all CNG and LNG for vehicle use in the U.S.
has been sold using the Gasoline Gallon Equivalent (GGE), a
calculated multiplier based on the amount of energy contained in the fuel.
To understand the GGE, one ;rst must understand
how a CNG dispenser works. Basically, a CNG or LNG
dispenser acts as a mass ;ow meter that measures the
pounds of product that pass through the meter. The
dispenser displays to customers the GGE: the pounds
multiplied by 5. 66. (In other words, you can’t hold a GGE
in your hand.) To a weights and measures type of person,
selling something using a nontraceable unit of measure
is akin to running one’s ;ngernails across a chalkboard.
Retailers, conversely, loved the idea.
But since the GGE became a standard measurement, a
growing percentage of large vehicles and commercial trucks
that typically consume diesel — not gasoline — have jumped
to CNG or LNG. Thus, in 2012, the proposal to add a DGE
Before NCWM delegates could vote on the issue yet again
in July, open hearings on the matter generated more comments and debate.
Discussion regarding potential customer confusion arose
primarily because the proposal stated that CNG or LNG
could be sold by GGE, DGE or mass. A late revision of the
proposal added a clause stating that printed receipts also would
include the mass measurement by 2021 — a feat no current
dispenser can perform.
The DGE proposal passed easily, and the rule will become
part of NIST (National Institute of Standards and Technology)
Handbooks 130 and 144 in January. Which method of sale
will be used in the marketplace, however, remains unknown.
DIESEL DISPENSER FILTERS
As with the DGE, NCWM delegates were required to
hold open hearings on the diesel dispenser ;lter proposal
before the vote.
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