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This oil category was driven by two new cooled exhaust gas recirculation (EGR) engine tests operating with 15% EGR, with used oil soot levels at the end of the test ranging from 6 to 9%. These tests are the Mack T-10 and Cummins M11 EGR, which address ring, cylinder liner, bearing, and valve train wear; filter plugging, and sludge. In addition to these two new EGR tests, there is a Caterpillar single-cylinder test without EGR which measures piston deposits and oil consumption control using an articulated piston. This test is called the Caterpillar 1R and is included in the existing Global DHD-1 specification. In total, the API CI-4 category includes eight fired-engine tests and seven bench tests covering all the engine oil parameters. The new bench tests include a seal compatibility test for fresh oils and a low temperature pumpability test for used oils containing 5% soot. This paper provides a review of the all the tests, matrix results, and limits for this new oil category.

In order to meet the U.S. EPA's 2007 on-highway emission standards for particulate and NOx, all diesel engines will require diesel particulate fi lters (DPFs) and cooled exhaust gas recirculation (EGR) and will utilize ultra-low sulfur fuel. As this will be the first time that all on-highway diesel engines will employ DPFs combined with ultra-low-sulfur fuel, the Engine Manufacturers Association (EMA) requested that a new oil category be developed to provide compatibility with DPFs in the exhaust system, as well as engine durability for both new and legacy engines. This paper reviews the development of this new oil category called API CJ-4, which will be introduced in October 2006. This diesel engine oil category is the first in the U.S. which limits the oil's sulfated ash, phosphorus, and sulfur in order to insure adequate service life of the DPF. The API CJ-4 oil category includes 9 fi red engine tests and 6 bench tests.

In order to meet the U.S. EPA's 2007 on-highway emission standards for particulate and NOx, all diesel engines will require diesel particulate fi lters (DPFs) and cooled exhaust gas recirculation (EGR) and will utilize ultra-low sulfur fuel. As this will be the fi rst time that all on-highway diesel engines will employ DPFs combined with ultra-low-sulfur fuel, the Engine Manufacturers Association (EMA) requested that a new oil category be developed to provide compatibility with DPFs in the exhaust system, as well as engine durability for both new and pre-2007 engines. This paper reviews the development of this new oil category called API CJ-4, which was introduced in October 2006. This diesel engine oil category is the fi rst in the U.S. which limits the oil's sulfated ash, phosphorus, and sulfur in order to insure adequate service life of the DPF. The API CJ-4 oil category includes 9 fired engine tests and 6 bench tests.

In order to improve the efficiency of concurrent science and engineering projects, efforts are being made on the object oriented analysis (OOA) of the NJ-NSCORT projects. With the use of information flow models a compatibility/completeness analysis, defined herein, can be performed in order to answer systems level project interaction questions. One obsticle has been the collection and subsequent processing of pertinent project information. Currently a software package is under development which will automate the analysis of the NJ-NSCORT project in real time basis utilizing the internet. In its final form it will offer the users up to the minute analysis of the efficiency and status of the concurrent science and engineering effort. Successful implementation og this analysis on an interactive website will facilitate the expansion of its usage beyond NJ-NSCORT.

As ALS goals branch out to extended missions to the moon and Mars, concurrent science and engineering projects take center stage in the development of new ALS technology. It is necessary to optimize the interdisciplinary research activities in order to ensure ALS research goals are met in a timely manner, and to guarantee the reliability of future long term missions. The SSM team of the NJ-NSCORT has developed an internet software platform capable of performing a systems level analysis of the ALS research activity. The information produced by the analysis can assist ALS researchers in the streamlining of research activity.

The New Jersey NASA Specialized Center of Research and Training (NJ-NSCORT) for Bioregenerative Life Support Systems (BLSS) was established at Rutgers University, with participation from Stevens Institute of Technology, in May 1996. Four research teams including Biomass Production, Food Processing and Nutrition, Waste Processing, and Systems Studies and Modeling were assembled to study issues related to human life support associated with long duration space missions. Each team is conducting a number of projects that address specific problems to the design of BLSS. The current tasks of the Systems Studies and Modeling (SSM) team are: to establish communications among NJ-NSCORT research teams, to develop system analysis methodologies, to develop hybrid fundamental/empirical models for individual subsystems of a BLSS, and to develop functional modules to manipulate information related to BLSS.