公开(公告)号：US20250052642A1

公开(公告)日：2025-02-13

申请号：US18519040

申请日：2023-11-26

Applicant: Harbin Engineering University

Inventor： Quan Dong ,  Chao Chen ,  Min Wang ,  Xiaoyan Wang ,  Daijun Wei

IPC: G01M15/04 ,  F02M65/00 ,  G01D5/14

Abstract: A non-invasive device for simultaneous testing dynamic characteristics and injection law of a gas needle valve and a method therefor are disclosed. The device includes a tested injector, a pressure sensor, a temperature sensor, an eddy current displacement sensor, a constant volume sealed container, and a controller. A nozzle of the tested injector is inserted into a constant volume cavity of the constant volume sealed container; the eddy current displacement sensor is arranged at a lower part of a gas needle valve of the tested injector; the pressure sensor and the temperature sensor are inserted into the constant volume cavity; and the controller is configured to receive displacement data, pressure data, and temperature data, and calculate the injection law of the tested injector based on the pressure data and the temperature data, achieving multi parameters testing of the needle valve lift and injection law in the same time and space.

公开(公告)号：US11493438B2

公开(公告)日：2022-11-08

申请号：US17203893

申请日：2021-03-17

Applicant: Harbin Engineering University

Inventor： Quan Dong ,  Yuqin Zhang ,  Di Wang ,  Changhao Lu ,  Zuo Ni ,  Xiyu Yang

IPC: G01N21/39 ,  G01N33/00

Abstract: The disclosure discloses a methane value online real-time monitoring system, which includes a laser tunable system portion, a gas component detection system portion and a data processing system portion. The laser tunable system portion includes a computer, laser drivers, tunable lasers, a laser beam combiner, a collimator, and a beam expander, which are connected in sequence. The gas component detection system portion includes a gas supply system pipeline, a hose, a valve, and a gas chamber. The data processing system portion includes a detector, lock-in amplifiers, an oscilloscope, and a data acquisition card, which are connected in sequence. In a working process of the methane value online real-time monitoring system, gas mass namely the methane value change can be monitored in real time on line by collecting natural gas introduced into a combustion chamber through a gas supply system pipeline of a natural gas engine.