公开(公告)号：US11713740B1

公开(公告)日：2023-08-01

申请号：US17958910

申请日：2022-10-03

Applicant: HARBIN ENGINEERING UNIVERSITY

Inventor： Jianhui Zhao ,  Jingyan Chen ,  Heng Zhang ,  Shuo Chen

IPC: F02M55/04 ,  F02M63/02 ,  F02M61/10 ,  F02M47/02 ,  F02M61/16

CPC classification number: F02M55/04 ,  F02M47/027 ,  F02M61/10 ,  F02M63/0275 ,  F02M61/16 ,  F02M2200/28 ,  F02M2200/315 ,  F02M2200/40

Abstract: The present disclosure provides a high-pressure common rail fuel injector capable of achieving highly stable injection based on the throttling damping-accommodating effect in the present disclosure, comprising a fuel injector housing, a fuel pipe connector, an accumulator chamber, a fuel chamber control valve, a pressure fluctuation absorption assembly, a control valve assembly and a nozzle assembly; the accumulator chamber is installed in the fuel injector housing, and the fuel pipe connector is installed above the accumulator chamber; the fuel chamber control valve, the pressure fluctuation absorption assembly and the control valve assembly are installed in the fuel injector housing, and the nozzle assembly is arranged below the control valve assembly; and the accumulator chamber is separated into a main accumulator chamber, an auxiliary accumulator chamber and a fuel-return accumulator chamber.

公开(公告)号：US20230184190A1

公开(公告)日：2023-06-15

申请号：US18085628

申请日：2022-12-21

Applicant: Harbin Engineering University

Inventor： Long LIU ,  Yan PENG ,  Changfu HAN ,  Haicheng QI ,  Li HUANG ,  Wenzheng ZHANG

IPC: F02D41/24 ,  F02D41/26 ,  G06F30/17

CPC classification number: F02D41/2451 ,  F02D41/26 ,  F02D41/2441 ,  F02D41/248 ,  G06F30/17 ,  G06F2111/10

Abstract: 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.

公开(公告)号：US20230160330A1

公开(公告)日：2023-05-25

申请号：US17676357

申请日：2022-02-21

Applicant: Harbin Engineering University

Inventor： Liyun FAN ,  Yunpeng Wei ,  Yuntao Mao ,  Jing Xu ,  Yuelin Wu ,  Hanwen Zhang

IPC: F01P3/02

CPC classification number: F01P3/02 ,  F01P2003/001

Abstract: 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.

公开(公告)号：US11657708B2

公开(公告)日：2023-05-23

申请号：US17211734

申请日：2021-03-24

Applicant: Harbin Engineering University

Inventor： Tong Wang ,  Azhar Hussain ,  Shan Gao ,  Jiahua Cao ,  Liwei Chen

IPC: G08G1/01 ,  G06T7/90 ,  G06T7/20

CPC classification number: G08G1/0133 ,  G06T7/20 ,  G06T7/90 ,  G06T2207/10024 ,  G06T2207/20081 ,  G06T2207/20084 ,  G06T2207/30236

Abstract: A large-scale real-time traffic flow prediction method of the present invention is based on fuzzy logic and deep LSTM, which relates to a technical field of urban intelligent traffic management. The method includes steps of: selecting an urban road network scene to collect color images of real-time traffic flow congestion information; obtaining congestion levels of multiple intersections according to the color images, which are used in a data training set; and forming a data sensing end of FDFP through a fuzzy mechanism; establishing a deep LSTM neural network, performing deep learning on the training data set, and constructing a prediction end of the FDFP; construct a graph of road intersections and formulate a k-nearest neighbors-based discounted averaging for obtaining congestion on the edges; and inputting real-time traffic information received from a server into an FDFP model.

公开(公告)号：US20230117560A1

公开(公告)日：2023-04-20

申请号：US17955864

申请日：2022-09-29

Applicant: Harbin Engineering University

Inventor： Shuangjie ZHANG ,  Piqi SONG

IPC: H01L41/257 ,  H01L41/187

Abstract: 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.

公开(公告)号：US20220392653A1

公开(公告)日：2022-12-08

申请号：US17746773

申请日：2022-05-17

Applicant: Harbin Engineering University

Inventor： GENGLEI XIA ,  MINJUN PENG ,  QIANG ZHAO ,  CHENYANG WANG ,  YUANDONG ZHANG ,  JILIN SUN ,  BOWEN ZHANG ,  XUE DU

IPC: G21C13/024 ,  G21C13/10 ,  G21C15/247 ,  G21C15/28

Abstract: An ERVC for floating nuclear power plants includes a containment, a reactor vessel, a liquid gallium collection tank, a heat pipe, a cooling cabin and a gallium storage tank. The containment is arranged in a sea environment, and the containment is provided with a containing cavity; the reactor vessel and the liquid gallium collection tank are arranged up and down and located in the containing cavity. An end of the heat pipe is inserted into the liquid gallium collection tank, and another end thereof is arranged outside the liquid gallium collection tank; the gallium storage tank is located in the containing cavity; the gallium storage tank is connected to the liquid gallium collection tank through a liquid gallium release valve; and the cooling cabin is located under the containment and under a sea level of the sea environment.

公开(公告)号：US20220326019A1

公开(公告)日：2022-10-13

申请号：US17846128

申请日：2022-06-22

Applicant: Harbin Engineering University

Inventor： Yuxin Zhao ,  Tingxiao Wei ,  Yueyang Ben ,  Lei Wu ,  Qian Li ,  Guangtao Zhou ,  Qianqian Gao ,  Xiaofeng Wei ,  Shuaiyang Li

IPC: G01C21/20 ,  G01C21/16

Abstract: The disclosure discloses a strapdown inertial navigation heave measurement method using multiple low-pass filter units, including: firstly, collecting data of a gyroscope and an accelerometer by a system, obtaining attitude information of a carrier by using initial alignment, and then, obtaining a relationship matrix between a body coordinate system and a geographic coordinate system by using the attitude information; obtaining a relationship matrix between the geographic coordinate system and a semi-fixed coordinate system according to a geographic position, and obtaining a rough vertical acceleration by using a direction cosine matrix, output information of the accelerometer and gravity information; then, filtering out low-frequency signals by using a double-filter unit and one integral link to obtain a relatively accurate velocity signal; and furthermore, enabling the vertical acceleration to be subjected to a triple-filter unit and two integral links to obtain an accurate heave displacement. The method avoids the problem of phase lead caused by traditional addition of high-pass filters, and can provide a reference for ship swaying reduction operations, ship carrier lifts, ship-borne weapon launch and heave compensation of various offshore platforms.

公开(公告)号：US11319844B2

公开(公告)日：2022-05-03

申请号：US17129447

申请日：2020-12-21

Applicant: Harbin Engineering University

Inventor： Jie Guo ,  Zhuang Zhao ,  Wenping Zhang ,  Xinyu Zhang

IPC: F01L9/10 ,  F01L9/40 ,  F01L13/00

Abstract: A fully variable valve train with a rotary plunger for an internal combustion engine. A motor actuates a high-pressure oil injection pump; when a timing driven electromagnetic valve connected to an oil inlet is opened, high-pressure oil enters a hydraulic cylinder; and when the force applied to a plunger by the hydraulic oil is larger than the force of a valve returning spring, the plunger is pushed to move down, so that a valve is opened. When the valve is required to be return, the timing driven electromagnetic valve connected to the oil inlet is closed, and the timing driven electromagnetic valve connected to the oil inlet is opened; the valve moves up under the action of the valve spring, pushing the plunger to move up and thereby discharging the low-pressure oil out of the hydraulic cylinder, then the plunger and the valve return to the initial positions.

公开(公告)号：US20210333237A1

公开(公告)日：2021-10-28

申请号：US17202787

申请日：2021-03-16

Applicant: HARBIN ENGINEERING UNIVERSITY

Inventor： Lanyong ZHANG ,  Menglin WANG ,  Sheng LIU ,  Chengyu LI

IPC: G01N27/82

Abstract: The present disclosure provides a distortion-free boundary extension method for online wavelet denoising. The method includes: S1: acquiring a signal segment xn, and performing a distortion-free boundary extension on the signal segment to obtain M+N+L data; S2: decomposing a lifting wavelet of the N data to be denoised into j layers to acquire approximation coefficients and detail coefficients; S3: calculating a threshold of each layer of the lifting wavelet; S4: thresholding the detail coefficients of each layer to obtain estimated values of the detail coefficients; S5: performing wavelet reconstruction by the approximation coefficients and the estimated values of the detail coefficients obtained by thresholding to obtain a reconstructed signal after denoising; and S6: outputting data.

公开(公告)号：US20210209939A1

公开(公告)日：2021-07-08

申请号：US17211734

申请日：2021-03-24

Applicant: Harbin Engineering University

Inventor： Tong Wang ,  Azhar Hussain ,  Shan Gao ,  Jiahua Cao ,  Liwei Chen

IPC: G08G1/01 ,  G06T7/20 ,  G06T7/90

Abstract: A large-scale real-time traffic flow prediction method of the present invention is based on fuzzy logic and deep LSTM, which relates to a technical field of urban intelligent traffic management. The method includes steps of: selecting an urban road network scene to collect color images of real-time traffic flow congestion information; obtaining congestion levels of multiple intersections according to the color images, which are used in a data training set; and forming a data sensing end of FDFP through a fuzzy mechanism; establishing a deep LSTM neural network, performing deep learning on the training data set, and constructing a prediction end of the FDFP; construct a graph of road intersections and formulate a k-nearest neighbors-based discounted averaging for obtaining congestion on the edges; and inputting real-time traffic information received from a server into an FDFP model.