Wyniki wyszukiwania - BazTech

1

Development of DME (dimethyl ether) fueled diesel engines for light-duty trucks MEETING 2009 Japan emission regulation

Sato M., Nozaki S.

Journal of KONES

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2006

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Vol. 13, No. 2

387-396

EN

DME fuel has been attracting attention as an alternative fuel for diesel engine. DME has a high cetane number and compression ignition capability. This enables a high thermal efficiency comparable to diesel engines. Moreover, DME creates no smoke or sulfur oxide. However, even when using DME, NOx still remain problems under stringent exhaust emission regulations. For severe NOx regulation and develop of alternative fuel for diesel engines, the diesel engines (Isuzu Motors Limited: 4HG1T) fueled with DME for light-duty trucks using a jerk type in-line DME injection system which meet the JAPAN 2009 emissions regulation was developed. Adopting the lower exhaust emission technology, such as a large volume EGR system with air-throttled and inter-cooled turbo-charging, National Traffic Safety and Environment Laboratory and Bosch Corporation has demonstrated the low-emission engines which achieve to reduce NOx emission level by about 50% (0.37 g/kWh) of the 2009 emissions regulation (<0.7 g/kWh) without a NOx reduction catalyst system.

2

Ionization of in-cylinder charge during preflame period in compression ignition of mixtures

Furutani M., Sato M., Shichi H., Ohta Y.

Journal of KONES

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2004

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Vol. 11, No. 1-2

157-164

EN

Ion formation has been detected in cool and blue flames that appear during the preflame period of mixture ignition caused in a rapid compression machine. An ionization gap was installed in the combustion chamber. Ion current level is much lower than that of normally observed in propagation flames, but highly reproducible. Ions arise at the time the cool flame degenerates, and again in the blue-flame induction time T2. Breakdown of electric non-conductance during the preflame period has been investigated recently using a motored premixed-compression ignition engine. An electrode gap was installed in the combustion chamber. Between the electrodes a high static voltage of 2 200 V was given, charged in a small capacitor. It has been found that the timing of discharge or break down during the preflame period was the time in which the cool flame began to appear. Several attempts have been made to detect ionization of low-temperature flames produced by piston compression or on a flat burner, and to obtain advanced knowledge on the role the low-temperature reactions, which perform for the onset of final hot-flame ignition.

3

Transient texture synthesis based on multiple templates

Saitoh T., Sato M., Kaneko T., Kuriyama S.

Machine Graphics and Vision

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2003

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Vol. 12, No. 4

525-537

EN

Texture synthesis based upon a sample image or template has attracted much attention recently. This paper describes a new blending algorithm for synthesizing a transient texture based upon two or more templates that gives an impression of a gradual transition from one template to another. Based upon a pair combination out of four templates, we synthesize six transitional textures. Then, we shown that various blending patterns can be designed by controlling the blending ratio maps. Based upon investigations of unsuccessful results of blending, we derive some necessary conditions on the statistical properties of templates for the applicability of this synthesis method.

4

Explicit environments

Sato M, Sakurai T., Burstall R.

Fundamenta Informaticae

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2001

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Vol. 45, nr 1,2

79-115

EN

We introduce le, a simply typed calculus with environments as first class values. As well as the usual constructs of l and application, we have e\lbrack\lbrack a\rbrack\rbrack which evaluates term a in an environment e. Our environments are sets of variable-value pairs, but environments can also be computed by function application and evaluation in some other environments. The notion of environments here is a generalization of explicit substitutions and records. We show that the calculus has desirable properties such as subject reduction, confluence, conservativity over the simply typed lb-calculus and strong normalizability.

5

Decoloration of dyes in aqueous solution by pulsed discharge plasma in water througt the pinhole

Sato M., Yamada Y., Sugiarto A. T.

Transactions of the Institute of Fluid-Flow Machinery

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2000

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Nr 107

95-100

EN

Recently, it has been widely report that some kind of organic compounds can be degraded by high voltage pulsed discharge in water. The authors proposed a new method to generate plasma in water through the pinhole, which can also effeciently degrade organic materials (for example phenol) in water. In the present work, plasma discharge through the pinhole was applied to the decoloration of some kinds on the dye) due to the pulse treatment. Decoloration rate was accelerated by adding hydrogen peroxide. It was concluded that the decoloration was occurring as a result of the attack of high-speed electron and radical reaction in the plasma.

PL

Znana jest możliwość zastosowania wysokonapięciowego impulsowego wyładowania elektrycznego w wodzie do eliminacji pewnych związków organicznych. Autorzy wykorzystali tego typu wyładowanie do odbarwiania roztworów wodnych z kilkoma typami barwników. Wyładowanie generowane było na otworach znajdujących się w płycie wykonanej z dialektryka i umieszczonej pomiędzy elektrodami wyładowczymi. Pod wpływem wyładowania impulsowego trwającego 1-2 h cząsteczki barwników ulegały rozkładowi, a roztwory wodne odbarwieniu. Za proces ten odpowiedzialne są elektrony i rodniki powstające w roztworze wodnym podczs impulsu wyładowania elektrycznego. Czas odbarwiania można skracać poprzez dodanie do roztworu nadtlenku wodoru.