Review of the Research Program of the Partnership for a New by National Research Council

By National Research Council

This can be the newest document of the nationwide examine Councils status Committee to study the study application of the Partnership for a brand new new release of cars (PNGV), which has carried out annual stories of the PNGV software because it used to be validated in overdue 1993. The PNGV is a cooperative R&D application among the government and the U.S. Council for car study (USCAR, whose contributors are DaimlerChrysler, Ford Motor corporation, and basic cars) to boost applied sciences for a brand new new release of cars with as much as thrice the gasoline economic system of a 1993 midsize motor vehicle. The studies assessment significant expertise improvement components (four-stroke direct-injection engines, gas cells, power garage, electronic/electrical platforms, and structural materials); the final adequacy of R&D efforts; the structures research attempt and the way it publications judgements on R the growth towards long-range part and system-level fee and function ambitions; and efforts in car emissions and complicated fabrics examine and the way effects aim pursuits. not like prior studies, the 7th document reviews at the objectives of this system, because the car industry and U.S. emission criteria have replaced considerably because the application used to be initiated.

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Adding a sulfur trap would extend the lifetime of current NOx traps. This means that either a sulfur trap regeneration procedure must be developed or a routine maintenance schedule for sulfur trap replacement must be mandated. , continuously regenerating particulate traps). To address this critical need DOE’s Office of Advanced Automotive Technologies (OAAT), working with the PNGV, has included sulfur-trap development and sulfur-tolerant catalyst material development in a recent solicitation. The request for proposals details specifications for the sulfur trap and the sulfurtolerant catalysts that are directly aimed at PNGV needs.

Nitrogen oxide emissions were not so dramatically affected. The greatest reduction in NOx seen with the test fuels relative to the base CARB fuel was 30 percent. This is somewhat encouraging; however, the level of reduction needed to meet the Tier 2 standards is closer to an order of magnitude, as opposed to a factor of two. 9 aCARB = CARB commercial #2 diesel fuel. = low-sulfur, low-aromatics, high-cetane petroleum-based diesel. cDMM15 = blend of 15 percent dimethoxymethane and 85 percent LSHC.

The fuel economy of gasoline direct-injection engines and the challenge of reducing their emissions to meet CARB low-emission vehicle (LEV 2) and federal Tier 2 standards falls between those of the homogeneous spark-ignited gasoline engine and the diesel engine. Because the in-house programs are proprietary, those efforts are not reported here. This review focuses on the status of the partners’ joint R&D efforts for diesel engines and the identification of the critical barriers that need to be surmounted for success in the PNGV program.

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