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Diesel Emissions

More Allegations Made in Repeal of Proposed Glider Kit Restrictions Under GHG Phase 2

Several members of Congress have asked the inspector general of the Environmental Protection Agency to look into allegations that there was improper contact between Volvo Group, the Truck & Engine Manufacturers Association, and the EPA regarding the agency’s regulation of glider kits under its Greenhouse Gas Phase 2 rules.

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States Invest VW Diesel Settlement in Clean Vehicle Technology

Millions of dollars in settlements from the VW diesel emissions cheating scandal will be made available for clean vehicle technology in California and Connecticut.

CARB Proposes Longer Truck Aftertreatment System Warranties

The California Air Resources Board has announced a public hearing on a proposed rule change that would extend maintenance support for faulty emissions control systems in heavy-duty trucks.

Senators, Former EPA Chiefs Urge Agency to Drop Glider Reg Repeal

Two Democratic senators who oversee environmental issues sent a letter on March 12 to Environmental Protection Agency Administrator Scott Pruitt, urging him to reverse his November 2017 proposal to repeal air emission standards for glider kits.

Delhi Diesel Ban May Not Improve Air Quality

The National Green Tribunal (NGT) order banning diesel vehicle registrations in Delhi may impact India's investment reputation but not substantially improve the city's smog-filled air.

VW Names CEO, Restructures North American Unit

Volkswagen has appointed Matthias Muller, the chairman of Porsche AG, as its new chief executive to replace the departed Martin Winterkorn, and will restructure its North American operations in the wake of a scandal over diesel emissions.

Volkswagen 'Deeply Sorry' About EPA Violation

Volkswagen's chief executive said the company is "deeply sorry" and plans to fully cooperate with the U.S. Environmental Protection Agency in its investigation of the automaker's use of software to get around federal emissions regulations.

Diesel Particulate Filters: Blessing and Curse

Diesel particulate filters help cleanse exhaust and give us cleaner air to breathe, but they cause frequent grief and expense.

DEF: A New Variable in Managing Truck Fleets

DEF is an acronym for diesel exhaust fluid used by diesel engines incorporating selective catalytic reduction (SCR) technology. As of Jan.1, DEF is now required for SCR-diesels to meet 2010 EPA emission standards.

Navigating California's New Ruling on Diesel Emissions

On Dec. 11, California adopted the most stringent emission standards in the nation for on-road heavy-duty diesel trucks with a gross vehicle weight rating (GVWR) greater than 14,000 lbs.