California - Fuels

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The Californian Air Resources Board (ARB) has instigated, in three phases, the development of a reformulated gasoline specification including a sulphur limit of 20 ppm but provides flexible methods of compliance with the specified properties using "flat" or "averaging" limits. Up to 10% ethanol may be blended in gasoline.

CARB Diesel mandates aromatic hydrocarbon limits additional to the US Federal specification but also with flexible means of compliance. An alternative fuel formulation may be certified provided that it can be shown, using engine tests, to provide equivalent emissions standards. A 15 ppm sulphur limit has been applicable since 2006.

A Low Carbon Fuel Standard has been established which is intended to reduce the carbon intensity, including life cycle emissions, of passenger vehicle fuels by 10% by 2020, compared with the 2010 emissions levels.

Gasoline

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Diesel

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Low Carbon Fuel Standard

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Alternative Fuels

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Introduction

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Methanol

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CNG

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LPG

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Hydrogen

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Alternative Diesel Fuels (Proposal)

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Reference Fuels

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Gasoline Reference Fuels

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Diesel Reference Fuels

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References

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Last update: 03/06/2015