公开(公告)号：US11486331B2

公开(公告)日：2022-11-01

申请号：US17405279

申请日：2021-08-18

Applicant: LG ELECTRONICS INC.

Inventor： Heejoong Jang ,  Hojong Jeong

IPC: F02B37/18 ,  F02B39/10 ,  F02D41/00 ,  F24F1/44 ,  F02G5/02 ,  F01N3/02

Abstract: The present disclosure relates to a gas engine heat pump including: an engine which burns a mixed air of air and fuel; a first exhaust flow path which is connected to the engine so that exhaust gas discharged from the engine passes through and is discharged to the outside; a turbo charger including: a first compressor which compresses the mixed air and supplies to the engine, and a first turbine which is installed in the first exhaust flow path and receives the exhaust gas passing through the first exhaust flow path to drive the first compressor; a supercharger which is installed in the first exhaust flow path between the engine and the first turbine, and receives and compresses the exhaust gas passing through the first exhaust flow path to supply to the first turbine; a second exhaust flow path which is branched from the first exhaust flow path between the engine and the supercharger, and converges to the first exhaust flow path between the supercharger and the first turbine; a first valve which is installed to be opened and closed in the second exhaust flow path; a third exhaust flow path which is branched from the first exhaust flow path between the supercharger and the first turbine, and converges to the first exhaust flow path in downstream of the first turbine; a second valve which is installed to be opened and closed in the third exhaust flow path; and a controller which controls operations of the first valve, the second valve, and the supercharger according to load of the engine.

公开(公告)号：US11708784B2

公开(公告)日：2023-07-25

申请号：US17536369

申请日：2021-11-29

Applicant: LG ELECTRONICS INC.

Inventor： Jinwoo Lee ,  Hojong Jeong ,  Heejoong Jang

IPC: F01P7/16 ,  F01P5/10 ,  F02B29/04 ,  F02B37/12 ,  F25B43/00 ,  F02B31/04 ,  F02M26/19 ,  F02M21/04

CPC classification number: F01P7/165 ,  F01P5/10 ,  F02B29/04 ,  F02B31/04 ,  F02B37/12 ,  F02M21/047 ,  F02M26/19 ,  F25B43/006 ,  F01N2240/02

Abstract: An engine system of the present disclosure includes an engine configured to drive a plurality of pistons by burning a mixture of air and gas, an air supply pipe through which the air supplied to the engine flows, a supercharger configured to compress the air flowing through the air supply pipe, a gas supply pipe through which the gas supplied to the engine flows, and a mixer configured to mix the air that has passed through the supercharger and the gas. The mixer has a venturi tube shape in which a cross-sectional area of a flow path decreases and expands in a flow direction of the air that has passed through the supercharger, and the gas supply pipe is connected to a portion of the mixer where the cross-sectional area of the flow path in the mixer is decreased.

公开(公告)号：US11649752B2

公开(公告)日：2023-05-16

申请号：US17405175

申请日：2021-08-18

Applicant: LG ELECTRONICS INC.

Inventor： Heejoong Jang ,  Hojong Jeong

IPC: F01N3/08 ,  F02D19/02 ,  F02D29/04 ,  F02D41/00 ,  F02D41/04 ,  F02D41/14 ,  F02D41/32 ,  F25B30/02

CPC classification number: F01N3/0842 ,  F02D19/022 ,  F02D19/027 ,  F02D29/04 ,  F02D41/0027 ,  F02D41/04 ,  F02D41/1454 ,  F02D41/32 ,  F25B30/02

Abstract: The present disclosure relates to a gas engine heat pump including: an engine which burns a mixed air of air and fuel; a first charger which compresses the mixed air and supplies to the engine; a first exhaust flow path which is connected to the engine, and through which exhaust gas discharged from the engine flows; and a second charger which is driven by the exhaust gas branched from the first exhaust flow path to a second exhaust flow path, and compresses the exhaust gas discharged from the engine and supplies the compressed exhaust gas to the engine, thereby reducing the emission of nitrogen oxide by recirculating the exhaust gas without additional power consumption.

公开(公告)号：US11592219B2

公开(公告)日：2023-02-28

申请号：US17130561

申请日：2020-12-22

Applicant: LG ELECTRONICS INC.

Inventor： Heejoong Jang ,  Hojong Jeong

IPC: F25B27/00 ,  F25B30/02 ,  F25B49/02

Abstract: Proposed is a method of controlling a gas heat-pump system, the system including an air conditioning module having a compressor and indoor and outdoor heat exchangers, and an engine module having an engine combusting mixed gas and thus generating drive power for operating the compressor, the method including: measuring factors that are temperature and humidity of outside air, an rpm of the engine, intake pressure, and an air-fuel ratio, the factors having effects on driving of the engine in an operating environment where the engine is driven; measuring a necessary ignition voltage for an ignition coil in a manner that corresponds to at least one of a plurality of the measured factors; and calculating a dwell time at which the necessary ignition voltage is output by the ignition coil.

公开(公告)号：US11384942B2

公开(公告)日：2022-07-12

申请号：US16707048

申请日：2019-12-09

Applicant: LG ELECTRONICS INC.

Inventor： Heejoong Jang ,  Song Choi

IPC: F24D11/00 ,  F02M26/22 ,  F02M26/09 ,  F02M26/19 ,  F02M26/34

Abstract: A cogeneration system includes an intake pipe having one end which communicates with the outside air and having the other end which is connected to an engine; a mixer disposed in the intake pipe to supply gas into the intake pipe; and an intake compressor for compressing a mixed gas which is a mixture of the air and the gas, wherein the intake compressor includes: a motor disposed in the intake pipe; and a compressor impeller which is disposed in the intake pipe, and rotates by the motor to compress the mixed gas.

公开(公告)号：US20220056861A1

公开(公告)日：2022-02-24

申请号：US17407322

申请日：2021-08-20

Applicant: LG ELECTRONICS INC.

Inventor： Heejoong Jang ,  Hojong Jeong

IPC: F02D41/00 ,  F02D41/14 ,  F02D29/04 ,  F02M26/34 ,  F02M26/35 ,  F02M26/37

Abstract: A gas engine heat pump and a method of operating the same are provided. According to an embodiment of the present disclosure, the gas engine heat pump includes: an engine for burning a mixture of air and fuel; an exhaust gas compressor for compressing exhaust gases coming from the engine; a buffer tank for storing the exhaust gases compressed by the exhaust gas compressor; an exhaust gas valve disposed between the buffer tank and an intake manifold of the engine; an exhaust gas spray nozzle for spraying the exhaust gases stored in the buffer tank into a cylinder of the engine; an exhaust gas sensor for acquiring information on the exhaust gases coming from the engine; and a controller, wherein the controller controls the operation of at least one of the exhaust gas valve and the exhaust gas spray nozzle, based on the information on the exhaust gases acquired by the exhaust gas sensor. Other various embodiments are possible.