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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 9. Отображено 9.
07-04-2023 дата публикации

Preparation method of nitrogen-doped porous carbon fiber and product and application of nitrogen-doped porous carbon fiber

Номер: CN115928267A
Автор: CHEN ROUXI, LIU FENG, WANG XIANGLIN, GAO YUFEI, ZHAN JIE, SU XINGDONG, LI JIAWEN, LIU XIAJIE
Принадлежит:

The invention relates to the technical field of preparation of carbon materials, in particular to a preparation method of nitrogen-doped porous carbon fibers as well as a product and application of the nitrogen-doped porous carbon fibers. The preparation method comprises the following step: carrying out cross-linking reaction on phenolic resin fibers under the action of a cross-linking agent to prepare the fibrofelt. Mixing the fibrofelt, an activating agent and a nitrogen source, and then drying to prepare a precursor; in the precursor, the activator and the nitrogen source are uniformly distributed in the fibrofelt. Carrying out carbonization treatment on the precursor to prepare a nitrogen atom-doped activated product, and washing the activated product to be neutral. The nitrogen-doped porous carbon fiber prepared by the method has good radioactive iodine adsorption performance.

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Номер записи: 1
29-08-2023 дата публикации

Piston design parameter calibration method, device and equipment

Номер: CN116663301A
Автор: SU XINGDONG, TANG ZHONGGANG, LIU HONGZHE, ZHU TAO, WANG HUI
Принадлежит:

The invention provides a piston design parameter calibration method, device and equipment, and the method comprises the steps: extracting the compression top dead center region tumble breakage data of an upward convex piston, the thermal load data of the upward convex piston and the compression ratio data of the upward convex piston from a simulation result in a simulation test process of a simulation model; according to the piston structure obtained through design of the scheme, large-scale rolling flow can be induced to be converted into small-scale eddy flow near the compression top dead center of the piston, the flow speed near a spark plug is reduced, and the stability of the piston structure is improved. Turbulence energy near a spark plug is improved, so that the fire risk of an engine is reduced, and the piston structure designed according to the scheme can be directly applied to a roof cylinder cover.

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Номер записи: 2
16-05-2023 дата публикации

Neutron absorption composite material preparation device and method based on screw extrusion

Номер: CN116117173A
Автор: LIU FENG, LEE SANG-YONG, SONG CHANGHUI, ZHAN JIE, LIU ZIBIN, SU XINGDONG, JIANG DANFENG, CHEN TUIXIN, LIU XIAJIE
Принадлежит:

The invention relates to a neutron absorption composite material preparation device and method based on screw extrusion, the preparation device comprises a screw extrusion module, a material transportation module, a reaction module and a control device, the screw extrusion module is used for printing a precursor, and comprises an extrusion base material as an overall frame containing pores; extruding the protective material into the pores of the integral frame; the material conveying module corresponds to the screw extrusion module and the reaction module and is used for conveying the precursor printed by the screw extrusion module to the reaction module; the reaction module is used for heating the precursor and introducing reaction gas and inert protective gas, so that the precursor is subjected to a self-propagating reaction and sintered into a protective component; the control device is used for controlling the screw extrusion module, the material conveying module and the reaction module ...

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Номер записи: 3
30-05-2023 дата публикации

Multi-ignition system, spark plug position determination method and related device

Номер: CN116181543A
Автор: LI WEI, ZHU TAO, SU XINGDONG, ZHANG HAIRUI
Принадлежит:

The invention discloses a multi-ignition system, a spark plug position determining method and related device.In the multi-ignition system, a first intake valve and a second intake valve are used for introducing gas into a combustion chamber, and a first exhaust valve and a second exhaust valve are used for exhausting the gas from the combustion chamber; the first intake valve and the second intake valve are located on the first side of the dome type cylinder cover, the first exhaust valve and the second exhaust valve are located on the second side of the dome type cylinder cover, and an included angle is formed between the first side of the dome type cylinder cover and the second side of the dome type cylinder cover. The first sparking plug is located between the second intake valve and the second exhaust valve, the second sparking plug is located between the first intake valve and the first exhaust valve, and the first sparking plug and the second sparking plug are used for igniting gas ...

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Номер записи: 4
23-06-2023 дата публикации

Ignition method and engine

Номер: CN116292021A
Автор: LI WEI, ZHU TAO, SU XINGDONG, WANG XUEPENG
Принадлежит:

The invention relates to the technical field of engines, in particular to an ignition method and an engine. The ignition method includes: determining that the combustion system generates knock; determining at least one of the plurality of knocking areas as a high-frequency knocking area according to the rotating speed and the torque of the engine; and determining the ignition time sequence of the main spark plug and the auxiliary spark plug according to the determined high-frequency detonation area. According to the system and method, the ignition time sequence of the spark plug corresponds to the high-frequency detonation area, the high-frequency detonation area is ignited firstly, flame propagation passes through the high-frequency detonation area as soon as possible, and therefore spontaneous combustion of mixed gas at the tail end of the edge of the main combustion chamber is reduced, and then the detonation tendency is reduced.

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Номер записи: 5
16-05-2023 дата публикации

Engine spark plug ignition control method and vehicle

Номер: CN116123007A
Автор: LI WEI, ZHU TAO, SU XINGDONG, ZHANG HAIRUI
Принадлежит:

The invention relates to the technical field of vehicles, and discloses an engine spark plug ignition control method and a vehicle, according to influence factors of combustion thermal efficiency under different engine working conditions, under a high-load working condition, two auxiliary spark plugs are controlled to ignite later than a main spark plug, and the ignition efficiency of the main spark plug is improved. Determining at least one of the plurality of knocking areas as a target knocking area according to the rotating speed and the torque of the engine, and determining the delay duration of the auxiliary spark plug later than the ignition of the main spark plug according to the target knocking area; under the low-speed and low-load working condition, the two auxiliary spark plugs are controlled to ignite later than the main spark plug, and the delay duration under the low-speed and low-load working condition is smaller than the delay duration under the high-load working condition ...

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Номер записи: 6
30-06-2023 дата публикации

Neutron protection device based on gradient porous structure and preparation method

Номер: CN116364322A
Автор: LIU FENG, CHEN YANBIN, ZHAN JIE, SONG CHANGHUI, LIU ZIBIN, LIU XIAJIE, LEE SANG-YONG, JIANG DANFENG, SU XINGDONG
Принадлежит:

The invention relates to a neutron protection device and method based on a gradient porous structure, and the device comprises a housing matched with a shielded structure, the gradient porous structure is fixedly disposed in the housing, the gradient porous structure is provided with a plurality of mutually communicated pores, and the porosity of the gradient porous structure gradually changes in a three-dimensional direction. And protective fillers are filled in the pores. The porosity of the gradient porous structure is gradually changed in the three-dimensional direction in a gradient manner, so that more protective filler is filled at a position with higher porosity, the proportion of the protective filler is higher, and the gradient porous structure can be used for being close to a shielded structure and has a better shielding effect; the part with lower porosity is filled with less protective filler, the proportion of the gradient porous structure is higher, and the protective device ...

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Номер записи: 7
07-04-2023 дата публикации

Engine ignition device and starting method for methanol fuel vehicle and methanol fuel vehicle

Номер: CN115929529A
Автор: LI WEI, ZHU TAO, SU XINGDONG, WANG HUI
Принадлежит:

The invention discloses an engine ignition device for a methanol fuel vehicle, a starting method and the methanol fuel vehicle, the engine ignition device for the methanol fuel vehicle comprises an engine cylinder body, a main spark plug and a pre-combustion spark plug, the main spark plug and the pre-combustion spark plug are arranged on the engine cylinder body, and the pre-combustion spark plug comprises a pre-combustion shell and a first heating device arranged on the pre-combustion shell; the first heating device is used for heating a pre-combustion chamber of the pre-combustion shell, a plurality of spraying holes are evenly formed in the bottom of the pre-combustion shell in the circumferential direction at intervals, and the second heating device is arranged at the communicating position of the air inlet header pipe and the air inlet manifold; and the second heating device is used for heating gas in the gas inlet main pipe and the gas inlet manifold. The method can be suitable for ...

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Номер записи: 8
23-06-2023 дата публикации

Methanol engine cold start method, device, equipment and system

Номер: CN116291930A
Автор: CHEN YUECHUN, ZENG XIAOXIAO, SU XINGDONG, LI SUTING, ZHOU SHENGYU
Принадлежит:

The invention discloses a cold start method, device, equipment and system for a methanol engine, and the method comprises the steps: opening a first methanol nozzle if it is detected that the methanol engine is in a cold start working condition; the first methanol nozzle is used for spraying methanol to the side, where the heater is located, in the intake manifold, the first methanol nozzle and the heater are both arranged on the side wall of the end, close to the air cylinder, of the intake manifold, the first methanol nozzle and the heater are oppositely arranged, and the heater is used for heating the side wall of the intake manifold when the methanol engine is in the cold start working condition. According to the scheme, methanol is sprayed to the heated side wall of the intake manifold through the first methanol nozzle during cold start, evaporation and atomization of methanol in the intake manifold are accelerated, and therefore the concentration of methanol gas in an air cylinder ...

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Номер записи: 9