���ϳԹ���

Today’s new diesel-power trucks are, by law, equipped with particulate filters, and in many models the DPF will soon will be joined by another aftertreatment device — selective catalytic reduction, or SCR, in a canister.

Navistar Inc., which said it has spent $600 million to develop its 2010 exhaust gas recirculation engine, said the company is losing sales of next year’s model because federal regulators “helped create the false impression” among customers that only urea-based after-treatment systems would meet 2010 federal emissions standards.

Kenan Advantage Group will acquire the assets of Reinhard Transportation, a Federal Way, Wash., fuel hauler that runs 64 trucks.

Clean Energy Fuels Corp. will buy BAF Technologies, a supplier of natural gas vehicle systems and conversion technology, for $8.3 million.

The National Highway Traffic Safety Administration’s decision to cut the maximum allowed stopping distance for large trucks by 30% will increase truck buyers’ costs somewhat, but will not force a widespread shift to new technology such as air disc brakes, industry groups and manufacturers said.

Diesel emission standards change again in January 2010, but unlike the previous modifications when all manufacturers used essentially the same emission-controlling technology, medium-duty truck buyers next year will have a choice of competing systems.

The accuracy of the Global Positioning System could be compromised as early as next year if the U.S. Air Force cannot meet an ambitious schedule for space and ground infrastructure deployment, according to a new report from the Government Accountability Office.

BOSTON — Volvo Trucks joined the argument over allowing longer, heavier trucks on U.S. highways, saying Congress should allow them on the interstate system to relieve congestion, increase productivity, conserve fuel and cut greenhouse gas emissions.