Turbocharger air intake silencer with adjustable cavity space structure

    公开(公告)号:US11905916B1

    公开(公告)日:2024-02-20

    申请号:US18363352

    申请日:2023-08-01

    IPC分类号: F02M35/12

    CPC分类号: F02M35/1261 F02M35/1288

    摘要: A turbocharger air intake silencer with adjustable cavity space structures is provided. The turbocharger air intake silencer comprises a silencer connecting flange and a first resonator device. The first resonator device comprises a first silencer sealing plate, a first annular sound absorption cavity body, a first rotary table, a first rotary steering gear and a first valve. A first sound absorption cavity is enclosed by the first silencer sealing plate, the first annular sound absorption cavity body, the first valve and the first rotary table. A first sound absorption cavity inlet pipe is arranged beside the first sound absorption cavity. The first sound absorption cavity and the first sound absorption cavity inlet pipe form a Helmholtz resonator. The first rotary steering gear is mounted on the silencer connecting flange. The rotary steering gear is connected with a first rotary rack.

    Free piston generator based on rigid synchronous transmission system

    公开(公告)号:US11831225B2

    公开(公告)日:2023-11-28

    申请号:US17564656

    申请日:2021-12-29

    摘要: A free piston generator based on a rigid synchronous transmission system is provided, which belongs to the technical field of power energy. The present disclosure solves the problems of low power generation efficiency and low stability of the existing free piston generator. The free piston generator based on the rigid synchronous transmission system includes a first linear generator set, a second linear generator set, a rigid synchronous transmission assembly, two high-pressure cylinders arranged at two ends of the first linear generator set, and two low-pressure cylinders arranged at two ends of the second linear generator set. The combustion product is firstly subjected to first-stage expansion in the high-pressure cylinder and is then subjected to second-stage expansion in the low-pressure cylinder, which effectively increases the energy utilization in exhaust gas, also increases the expansion work, and further improves the thermal efficiency and the power generation efficiency of the free piston generator. By means of the rigid synchronous transmission assembly, high-pressure pistons and low-pressure pistons are always kept in stable phase operation, so as to avoid the problems of wall-impingement and insufficient pressure of compressed air due to the phase mismatching.

    POLYPYRROLE ENCAPSULATED GRAPHENE CORROSION INHIBITOR CONTAINER AND ITS PREPARATION METHOD AND COMPOSITE COATING AND ITS APPLICATION

    公开(公告)号:US20230312939A1

    公开(公告)日:2023-10-05

    申请号:US18127678

    申请日:2023-03-29

    IPC分类号: C09D5/08 C09D175/04

    CPC分类号: C09D5/084 C09D175/04

    摘要: A polypyrrole-coated graphene corrosion inhibitor container and its preparation method and a composite coating and its application are provided. The polypyrrole encapsulated graphene corrosion inhibitor container includes graphene oxide and a polyvinylo layer encapsulated on the surface of the graphene oxide. The invention is based on a polymerization reaction by mixing a polypyrrole acid solution, a graphene oxide dispersion, and an initiator to obtain a polypyrrole encapsulated graphene corrosion inhibitor container. The polypyrrole encapsulated graphene corrosion inhibitor container regulates the release rate of the corrosion inhibitor by wrapping the polypyrrole around the graphene oxide so that it is released rapidly in alkaline solutions and at a slower rate in neutral media. The results of the practical example show that the polypyrrole encapsulated graphene corrosion inhibitor container can regulate the release rate of the corrosion inhibitor and has excellent corrosion protection properties and corrosion protection durability.

    Combustion System Design Method Based on Target Heat Release Rate

    公开(公告)号:US20230184190A1

    公开(公告)日:2023-06-15

    申请号:US18085628

    申请日:2022-12-21

    IPC分类号: F02D41/24 F02D41/26 G06F30/17

    摘要: Disclosed is a combustion system design method based on a target heat release rate, which belongs to the technical field of diesel engine combustion chamber design. The method includes: obtaining an ideal heat release rate based on Sabathe-Miller cycle; simulating the ideal heat release rate based on a double-Wiebe function and obtaining the target heat release rate; constructing a mapping relation among the heat release rate, piston geometric parameters and fuel injection parameters, which includes target start of combustion being an function of fuel injection timing and ignition delay, premixed combustion parameters being functions of throat radius, injection pressure and nozzle diameter, and diffusion combustion being a function of piston pit depth; solving target piston geometric parameters and target fuel injection parameters based on the mapping relation; and then designing a combustion system. The method does not depend on experience and multi-scheme design, greatly shortens the combustion system design.

    LIQUID AMMONIA PHASE-CHANGE COOLING TYPE HYBRID POWER THERMAL MANAGEMENT SYSTEM

    公开(公告)号:US20230160330A1

    公开(公告)日:2023-05-25

    申请号:US17676357

    申请日:2022-02-21

    IPC分类号: F01P3/02

    CPC分类号: F01P3/02 F01P2003/001

    摘要: A liquid ammonia phase-change cooling type hybrid power thermal management system. The system comprises an injector, a liquid ammonia hydrogen supply system, a liquid ammonia common rail pipe, a fuel oil common rail pipe and an oil tank, wherein the liquid ammonia hydrogen supply system comprises a liquid ammonia storage tank, an ammonia pumping system, a flow dividing system and an ammonia inlet and outlet system, the fuel oil common rail pipe is respectively connected with the oil tank and a one-way oil inlet of the injector, the liquid ammonia common rail pipe is respectively connected with the ammonia inlet and outlet system and a one-way ammonia inlet of the injector, an ammonia inlet pipe and an ammonia return pipe are arranged in the ammonia inlet and outlet system, the ammonia pumping system comprises a liquid ammonia storage flow divider, a low-pressure pump and a high-pressure pump.

    Method for depolarization suppression of rhombohedral relaxor-based ferroelectric single crystals

    公开(公告)号:US20230117560A1

    公开(公告)日:2023-04-20

    申请号:US17955864

    申请日:2022-09-29

    IPC分类号: H01L41/257 H01L41/187

    摘要: A method for depolarization suppression of in rhombohedral relaxor-based ferroelectric single crystal. The purpose of the present invention is to address the problem that the rhombohedral relaxor-based ferroelectric single crystals would depolarize when driven to sufficiently electric field due to their low coercive field. In the present invention, the crystal cut, poling direction and compressive stress application direction of the crystal is selected based on the domain structure and anisotropic nature of the crystal such that the spontaneous direction(s) of the crystal would rotate towards the poling direction in response to the applied compressive stress. Through application of appropriate compressive stress, the magnitude of depolarization field of the rhombohedral relaxor-based ferroelectric single crystals can be effectively increased.