Results 131 to 140 of about 1,236,598 (336)

The Diesel Fuel Post-Injection into Engine Cylinder as Method of Nox Reduction

open access: yesCommunications, 2003
The possibilities of limiting the emission of nitrogen oxides in the cylinder of the diesel engine by means of its design and operating parameters are limited. This is why studies of the effectiveness of various methods for NOx reduction in exhaust gases
Zygmunt Szlachta, Jerzy Cisek
doaj   +1 more source

Hybrid magnetron sputtering of ceramic superlattices for application in a next generation of combustion engines. [PDF]

open access: yesSci Rep, 2022
de Castilho BCNM   +9 more
europepmc   +1 more source

Radiation effect on rocket engine performance [PDF]

open access: yes
The effects of radiation on the performance of modern rocket propulsion systems operating at high pressure and temperature were recognized as a key issue in the design and operation of various liquid rocket engines of the current and future generations ...
Chiu, Huei-Huang
core   +1 more source

Membrane reactor technology for ultrapure hydrogen production [PDF]

open access: yes, 2005
The suitability of polymer electrolyte membrane fuel cells (PEMFC) for stationary and vehicular applications because of its low operating temperatures, compactness, higher power density, cleaner exhausts and higher efficiencies compared to conventional ...
Patil, Charudatta Subhash
core   +1 more source

Tuning Pore Size in Porous Graphene Membrane for O2/N2 Separation

open access: yesAdvanced Materials, EarlyView.
Single‐layer graphene membranes featuring N‐functionalized, 0D pores offer a promising platform for O2/N2 separation. The heterogeneity of functional groups at the pore edge is dynamically tunable, enabling precise tuning of the pore limiting diameter and gas transport.
Kuang‐Jung Hsu   +5 more
wiley   +1 more source

The hard start phenomena in hypergolic engines. Volume 3: Physical and combustion characteristics of engine residuals [PDF]

open access: yes
An investigation was conducted to determine the cause of starting problems in the hypergolic rocket engines of the Apollo reaction control (RCS) engines.
Miron, Y., Perlee, H. E.
core   +1 more source

Fabrication Method of Directional Microstructure for High Energy Density, High Power Battery Cathodes

open access: yesAdvanced Materials Interfaces, EarlyView.
Aqueous directional ice templating (DIT) is developed for making NMC811 cathodes containing vertically aligned pore arrays through electrode thickness. The effects of calendering are studied for the DIT electrodes to find optimal calendering and simultaneously achieve high gravimetric and volumetric energy densities and rate capability for lithium ion ...
Guanting Li   +3 more
wiley   +1 more source

LOX/hydrocarbon rocket engine analytical design methodology development and validation. Volume 1: Executive summary and technical narrative [PDF]

open access: yes
During the past three decades, an enormous amount of resources were expended in the design and development of Liquid Oxygen/Hydrocarbon and Hydrogen (LOX/HC and LOX/H2) rocket engines.
Pieper, Jerry L., Walker, Richard E.
core   +1 more source

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