DETROIT – FEV Engine Technology announces at the Society of Automotive Engineers World Conference here it is engaged in a National Renewable Energy Laboratory-managed program to develop emissions technology that enables light-vehicle diesel engines to comply with markedly tighter U.S. emissions standards now phasing-in nationally.
FEV says the program is evaluating low-sulfur diesel fuel, diesel-engine technology and emissions-control strategies, “to meet projected emissions standards through 2007.”
By 2007, federal Tier II emissions mandates require all light vehicles, regardless of engine type or fuel used, to comply with considerably lower standards for hydrocarbon (HC), carbon monoxide (CO) oxides of nitrogen (NOx) and particulate matter (PM) emissions.
FEV Diesel Future II complies with Tier II standards.
Diesels, while markedly more fuel-efficient than gasoline engines, typically generate higher levels of NOx and PM, making it difficult, with current engine and exhaust-aftertreatment technology, for diesels to comply with the new Tier II mandates.
FEV says it is testing a combination of high-pressure, common-rail fueling for direct-injection; low-sulfur diesel fuel; NOx-absorber catalysts and diesel particulate filters (DPFs) to bring light-vehicle diesels into Tier II compliance.
The company says it has developed a test engine dubbed Diesel Future II, predominantly using production components – but with proprietary FEV cylinder heads and pistons designed to reduce emissions.
Combined with a NOx-absorber catalyst and a regenerating DPF, FEV says the engine, installed in a passenger vehicle, meets Tier II, bin 5 emissions standards.
FEV says several auto makers currently are evaluating the company’s test results, with the next phase of the program slated to test long-term performance.