Zobrazeno 1 - 10
of 442
pro vyhledávání: '"R K, Jensen"'
Autor:
Thorpe, Rachel1,2 (AUTHOR) rthorpe@redcrossblood.org.au, Raivola, Vera3,4 (AUTHOR), Masser, Barbara1,5,6 (AUTHOR)
Publikováno v:
New Genetics & Society. Dec2024, Vol. 43 Issue 1, p1-21. 21p.
Autor:
Arup Gangopadhyay, R. K. Jensen, Mary E. Graham, Hong Gao, Dairene Uy, R. T. Stockwell, Ann E. O'Neill, Cory B. Phillips, S. J. Simko, Roscoe O. Carter
Publikováno v:
Lubrication Science. 20:163-180
Poisoning by phosphorus in engine oil limits the useful life of automotive catalysts. The amount of phosphorus in engine oil has been decreasing for over a decade, and currently is limited to 0.08 wt% maximum. The source of phosphorus in engine oil i
Publikováno v:
Tribology International. 38:289-297
Friction and wear characteristics of low viscosity SAE 5W-20 engine oils containing different amounts of phosphorus were studied using two different test devices. One was a laboratory high frequency reciprocating rig (HFRR) testing new and used oils
Autor:
R. K. Jensen
Publikováno v:
Lubrication Science. 17:147-162
In advanced fuel-efficient engine oils containing molybdenum dialkyldithiocarbamate, Mo(dtc)2, as a friction-reducing additive, the friction-reducing capability is gradually depleted with mileage accumulation and is dependent on the presence of other
Publikováno v:
Tribology Transactions. 47:200-207
Phosphorus is present in engine oils in the form of the antiwear and antioxidation additive zinc dialkyldithiophosphate (ZDDP). Its effects on wear and friction were studied at different temperatures using a high-frequency reciprocating rig (HFRR). T
Publikováno v:
Tribotest. 9:197-207
The assessment of engine oil useful life is an important step in the development of future low-phosphorus, catalyst-compatible, and long-drain engine oils. This paper describes the development and application of a new laboratory screening test, the F
Publikováno v:
Lubrication Science. 14:25-42
The ligand-exchange reactions between molybdenum dialkyldithiocarbamate, Mo(dtc)2, and zinc dialkyldithiophosphate, Zn(dtp)2, have been investigated during inhibited oxidation in a model hydrocarbon (hexadecane) and in a series of Group I–IV base o
Publikováno v:
Tribotest. 7:187-201
Improvement of engine fuel efficiency is one of the most important goals of current automotive development. Maximising the contribution of engine oils to fuel efficiency is a very important part of this process. Engine friction modelling, based on fu
Publikováno v:
Tribology Transactions. 44:637-647
Presented as a Society of Tribologists and Lubrication Engineers Paper at the STLE/ASME Tribology Conference in San Francisco, CA October 21–24, 2001
Publikováno v:
Industrial Lubrication and Tribology. 52:209-220
During the first decades of the next millennium, automobile manufacturers will strive to achieve, in the USA, another twofold increase in energy efficiency and tenfold reduction in emission levels. On the way to achieving these goals, automobile manu