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Coast Guard planes to get a room with a view
. Mechanical engineering Professor Douglas E. Adams monitors vibration data on a computer screen. Photo: Purdue News Service /David Umberger Currently, the Lockheed Martin HC-130J Hercules search-and-rescue plane has a circular observation window that is about a foot in diameter. The Coast Guard would like...
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Diesel engines clean up their act
, and more stringent Tier 3 standards phase in starting in 2005. As just one point of comparison, Tier 1 standards mandate maximum NO levels of 9.2 gm/kW-hr for engines over 300 hp, while Tier 2 and 3 levels for combined NO and HC are 6.4 and 4.0 gm/kW-hr, respectively -- nearly a 60% reduction...
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Success in Substantially
the product rapidly absorbing spilled. oil. The presentation went on to thoroughly discuss how the. populations of the "HC" (Hydrocarbon) Microbes eat and digest. the hydrocarbons, leaving only the biodegradable cotton and pecan. pith based product, and waste by-product from the microbes,. Carbon Dioxide...
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Hydrostatic Drives
of the maximum force and maximum speed required by the function, even though these two conditions rarely occur simultaneously. Corner horsepower for vehicle propulsion is. Hc = ( Ft * V ) / 3,600n. where Hc = corner horsepower, kW; Ft = maximum vehicle tractive force, N; V = maximum vehicle speed, km/h...
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Sorting out static seals
pressure further increases internal stress and supplements the preload. To prevent leaks, contact pressure between the gasket and sealing interfaces on both sides of the sealing gap must exceed the fluid pressure. Preload can be specified in terms of percent axial squeeze Sa, defined as: Sa = (Ho-Hc...
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Cost saving by using Oil Sponge
contained very high populations of. hydrocarbon eating (digesting) microbial cultures. Their presentation exhibited the product rapidly absorbing spilled. oil. The presentation went on to thoroughly discuss how the. populations of the "HC" (Hydrocarbon) Microbes eat and digest. the hydrocarbons, leaving...
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Hot Cotton: New System Senses Water Stress
Unit at the Stoneville center, in collaboration with H. C. (Lyle) Pringle, a Mississippi State University scientist, are exploring canopy temperature change as a more reliable indicator of crop water status. They developed a movable field-tracking system that uses thermal sensors to capture images...
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2-step Variable Valve Actuation: System Optimization and Integration on an SI Engine (.pdf)
system was modified for control and. (LIVO) strategy during the cold start for reduced HC. calibration of 2-step VVA, and to realize the full fuel. The main technical issues surrounding this approach. economy potential of the system. are: 1. Optimization of valve lift profiles. Dynamometer tests...
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Wind Energy Solutions (.pdf)
. a e. d. e pi. p t. i c. t h. c. h po. p w. o e. w r. e. r an. a d. n. d co. c n. o t. n r. t o. r l. o ,. l. , an. a d. n. d fl u. fl i. u d. i. rotary unions (FRUs) carry hy. h dr. y aulic. dr. actuation power where. ne. n e. e d. e e. d d. e . d. . M. o. M o. o g. o. g C. o. C m. o p. m o. p n. o...
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Effect of Diesel and Water Co-injection with Real-Time Control on Diesel Engine Performance and Emissions (.pdf)
reduction greatly. The. hydrocarbon (HC) emissions at low engine loads due to. Mitsubishi team reported substantial NOx and soot. excessive reductions in flame temperature, as well as. reductions using their water-fuel injector. excessive increases in ignition delay across the. operating range...