# US 2019/0170059 A1 · Waste gate valve for turbocharger > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170059 A1 - Document ID: US20190170059A1 - Status: Published application - Kind: A1 - Application number: 15/953,625 - Filed: 2018-04-16 - Published: 2019-06-06 - Earliest claimed: 2017-12-01 - Assignees: Hyundai Motor Company; Kia Motors Corporation - Applicants: Hyundai Motor Company; Kia Motors Corporation - Inventors: Seok Beom Jin - Web page: https://patentgrep.com/patent/US20190170059A1 ## CPC - F02B 37/183: {Arrangements of bypass valves or actuators therefor} - F01D 17/105: {by passing part of the fluid} - F16K 3/24: with cylindrical valve members - F16K 3/262: {with a transverse bore in the valve member} - F16K 3/265: {with a sleeve sliding in the direction of the flow line} - F05D 2220/40: in turbochargers - F05D 2260/606: Bypassing the fluid - Y02T 10/12: Improving ICE efficiencies - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A waste gate valve for a turbocharger is provided that improves control responsivity, wear resistance and the flow uniformity of diverted exhaust gas by improving the operational structure thereof. The waste gate valve includes a turbine housing in which a portion of a bypass passage is formed along the inner circumferential surface of a discharge passage. A mixer ring includes bypass apertures therein that are arranged along the bypass passage formed in the inner circumferential surface of the discharge passage. Additionally, a control valve is configured to open or close the bypass apertures based on movement thereof. ## Claims ### Claim 1 A waste gate valve for a turbocharger, comprising: a turbine housing that accommodates a turbine wheel therein and includes a bypass passage formed therein to divert exhaust gas introduced into the turbine wheel to a discharge passage, a portion of the bypass passage being formed along an inner circumferential surface of the discharge passage; a mixer ring formed to block a region between the bypass passage and the discharge passage and including therein bypass apertures arranged along the bypass passage formed in an inner circumferential surface of the discharge passage; and a control valve configured to switch a state of the bypass apertures to an open state or a closed state via movement thereof to regulate an opening degree of the bypass apertures. ### Claim 2 (depends on 1) The waste gate valve according to claim 1, wherein the mixer ring is fixedly inserted into a discharge pipe, and the control valve is movably inserted between an outer circumferential surface of the mixer ring and an inner circumferential surface of the discharge pipe. ### Claim 3 (depends on 1) The waste gate valve according to claim 1, wherein the bypass passage includes: a first passage formed between an introduction pipe through which exhaust gas is introduced into the turbine housing and a discharge pipe through which exhaust gas is discharged; and a second passage that communicates with the first passage and is formed in a shape of a recess that extends along an inner circumferential surface of the discharge pipe, wherein the bypass apertures formed in the mixer ring are disposed between the second passage and the discharge passage. ### Claim 4 (depends on 3) The waste gate valve according to claim 3, wherein the recess that defines the second passage is formed with a circumference of a first side thereof, disposed adjacent to the turbine wheel, having a smaller inner diameter than a circumference of a second side thereof, disposed distant from the turbine wheel, wherein a support flange is formed along the circumference of the first side of the recess disposed adjacent to the turbine wheel, and wherein an end of the mixer ring is supported by the support flange. ### Claim 5 (depends on 1) The waste gate valve according to claim 1, wherein the bypass apertures are arranged at equidistant intervals from each other in a circumferential direction of the mixer ring. ### Claim 6 (depends on 5) The waste gate valve according to claim 5, wherein the opening degree of each of the bypass apertures is identical to the opening degree of all other bypass apertures when the control valve moves. ### Claim 7 (depends on 2) The waste gate valve according to claim 2, further comprising: an actuator configured to supply moving force to the control valve in an axial direction, wherein the control valve is formed in a shape of a ring that has a solid circumferential surface overall, and wherein, when the control valve moves toward a first end portion or a second end portion of the mixer ring in the axial direction, the control valve overlaps the bypass apertures or moves away from the bypass apertures to regulate the opening degree of the bypass apertures. ### Claim 8 (depends on 7) The waste gate valve according to claim 7, wherein a length of the control valve in the axial direction is shorter than a length of the mixer ring in the axial direction, and wherein the length of the control valve in the axial direction is set to completely open or completely close the bypass apertures when the control valve moves within a predetermined displacement range in the axial direction. ### Claim 9 (depends on 7) The waste gate valve according to claim 7, wherein the control valve includes: a first guide formed at an outer circumferential surface thereof in the axial direction, wherein the discharge pipe includes a second guide formed at an inner circumferential surface thereof in the axial direction, and wherein the second guide id disposed at a position that corresponds to a position of the first guide and has a shape that corresponds to a shape of the first guide to guide movement of the control valve in the axial direction. ### Claim 10 (depends on 9) The waste gate valve according to claim 9, wherein the first guide is formed to avoid exposure to the bypass passage when the bypass apertures are completely closed. ### Claim 11 (depends on 2) The waste gate valve according to claim 2, further comprising: an actuator configured to supply rotational force to the control valve in a circumferential direction, wherein the control valve includes overlap apertures therein formed in the circumferential direction thereof to be disposed at positions that correspond to positions of the bypass apertures and to have a shape that corresponds to a shape of the bypass apertures, and wherein, when the control valve rotates in the circumferential direction, the overlap apertures overlap the bypass apertures or move away from the bypass apertures to regulate an opening degree of the bypass apertures. ### Claim 12 (depends on 7) The waste gate valve according to claim 7, wherein the turbine housing includes a knob aperture therein formed to correspond to a displacement range of the control valve, and wherein the control valve includes a knob that penetrates the knob aperture, the knob having a first end fixed to the control valve and a second end connected to the actuator. ### Claim 13 (depends on 11) The waste gate valve according to claim 11, wherein the turbine housing includes a knob aperture therein formed to correspond to a displacement range of the control valve, and wherein the control valve includes a knob that penetrates the knob aperture, the knob having a first end fixed to the control valve and a second end connected to the actuator.