Termsort icon Definition
adsorption

When one substance collects on the surface of another

bio-derived liquids

sugars, ethanol, or bio-oils

biomass

Plant materials and animal waste used as fuel

carbon intensity

A measure of the amount of carbon contained in various energy forms. (units of carbon emitted per unit of energy)

catalyst

substance that initiates or accelerates a chemical reaction

CNG

compressed natural gas

commercialize/commercialization

developing markets, and producing and delivering products for sale

criteria pollutants

pollutants that harm health and the environment

E85

85% ethanol/15% gasoline

electrolysis

A method of separating chemically bonded elements by passing an electric current through them.

evaporative emissions

Emissions produced from fuel evaporation

feedstock

raw material

gge

gasoline gallon equivalent

greenhouse gas

A gas in Earth's atmosphere that traps heat and can contribute to global warming. Carbon dioxide and methane are two GHGs.

kg

kilogram

kW

kilowatt

LEV

low emissions vehicle

MWh

megawatt hour

pre-commercial

before being sold on the retail market

PZEV

partial zero emissions vehicle

reactive chemicals

will form positive and negative ions

SLEV

super low emissions vehicle

SULEV

super ultra low emissions vehicle

well-to-wheels studies

from fuel production to fuel use

ZEV

zero emissions vehicle