Results 251 to 260 of about 17,220,096 (291)
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Impact of High Compression Ratios on Ethanol Homogeneous Charge Compression Ignition
SAE Technical Paper Series<div class="section abstract"><div class="htmlview paragraph">Ethanol requires elevated intake temperatures to initiate autoignition in Homogeneous Charge Compression Ignition (HCCI) as a high-octane single-stage fuel. To leverage the high thermal efficiency, low engine-out NOx, and near-zero
Kunal Vedpathak +5 more
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Study on the gridded electron gun with high compression ratio
2002 3rd International Conference on Microwave and Millimeter Wave Technology, 2002. Proceedings. ICMMT 2002., 2003The electron gun structure sizes were obtained with a fast calculation method. An electron gun with a perveance of p/sub /spl mu//>1 /spl mu/p and the area compression ratio M/sup 2/ > 50 was designed with the GUND4.FOR program.
null Liao Fujiang +2 more
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Diesel Combustion at High MEP with Low Compression Ratio
SAE Technical Paper Series, 1966<div class="htmlview paragraph">Very high mean effective pressures can be obtained from the diesel engine with limited maximum cylinder pressures by using a large clearance volume, that is, a low compression ratio, at high loads. The resultant low compression temperature is an added advantage as far as power production is concerned, but gives ...
W. P. Mansfield, W. S. May
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An improved SPH method for compressible flows with high density ratios
Journal of Computational PhysicszbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wenbo Fan, Delong Xiao, Jun Liu 0088
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Novel Method for QDDFS with Super High Compression Ratio
2006 8th International Conference on Solid-State and Integrated Circuit Technology Proceedings, 2006A novel method for quadrature direct digital frequency synthesizer with ten millions compression ratio, which is based on the Taylor expansions of sine and cosine, is firstly put forward. The traditional DDFS architecture is changed while accumulator is replaced by phase tipster in this system.
Qiao Xiaolin +3 more
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Combustion Chambers For High Compression Ratio D.I. Diesel
SAE Technical Paper Series, 1984<div class="htmlview paragraph">In direct injection Diesel engines having a unit displacement less than 1 liter, the use of high compression ratios (19\20 instead of 16\17) is mandatory for solving cold smoke problems and reducing HC\NOx emissions. The increase of compression ratio however is associated to the increase of black smoke and specific
C. Bassoli, G. Bodritti, G. M. Cornetti
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A concept of very high ratio gas compression device
Journal of Fusion Energy, 2016A very high ratio gas compression device based on liquid metal conical implosion is described in this paper, which can reach a compression ratio up to 109–12. This device can produce extremely high density, high pressure, and high temperature, thermally equilibrated states by rapid but continuous compression of gaseous materials.
Cheng Li, Jianguo Chen, Yian Lei
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Design of direct digital frequency synthesizer with high ROM compression ratio
2005 12th IEEE International Conference on Electronics, Circuits and Systems, 2005A new ROM size reduction technique for direct digital frequency synthesizers (DDFS's) is proposed in this paper. In the new technique, a multiple-segment piecewise polynomial function is g(x)determined for the sinusoidal ROM table which stores the values of sin(pix/2)-g(x) instead of sin(pix/2).
Li-Wen Hsu, Dah-Chung Chang
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Energy Optimizing of High-Compression-Ratio Combustion Chambers
SAE Technical Paper Series, 1984<div class="htmlview paragraph">A synthesis of the research undertaken at the Institut Francais du Pétrole to understand phenomena of combustion, of heat transfers, and of knock and controlling to optimize high-compression-ratio combustion chambers has led to the proposing of two specific research topics: - calm chamber with dual ignition ...
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HIGH COMPRESSION RATIOS IN AUTOMOTIVE ENGINES
SAE Technical Paper Series, 1947DARL F. CARIS, ARCHIE D. McDUFFIE
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