# US 2017/0284271 A1 · Method and apparatus for handling exhaust gas > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0284271 A1 - Document ID: US20170284271A1 - Status: Published application - Kind: A1 - Application number: 15/129,163 - Filed: 2015-03-26 - Published: 2017-10-05 - Earliest claimed: 2014-03-26 - Assignees: Azen Manufacturing Pte Ltd - Applicants: Azen Manufacturing Pte Ltd - Inventors: Kheng Lee BEK; Chee Meng TAN - Web page: https://patentgrep.com/patent/US20170284271A1 ## CPC - F01N 13/082: {of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation (F01N13/20 takes precedence)} - F01N 1/00: Silencing apparatus characterised by method of silencing - F01N 3/32: using air pump (using jet air pumps F01N3/34; pumps in general F04) - F01N 13/085: {having means preventing foreign matter from entering exhaust conduit} - F23J 11/00: Devices for conducting smoke or fumes, e.g. flues (chimney stacks E04H12/28; removing cooking fumes from domestic stoves or ranges F24C15/20 {; fume conduits of furnaces, kilns, ovens, or retorts F27D17/302}) - F23L 17/16: Induction apparatus, e.g. steam jet, acting on combustion products beyond the fire - F01N 2260/06: for improving exhaust evacuation or circulation, or reducing back-pressure - F01N 2260/20: for heat or sound protection, e.g. using a shield or specially shaped outer surface of exhaust device - F01N 2260/26: for preventing enter of dirt into the device - F01N 2270/02: for cooling exhaust gases or the apparatus - Y02T 10/12: Improving ICE efficiencies - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) - F23J: REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES (combustion apparatus for consuming smoke or fumes, e.g. exhaust gases, F23G7/06) - F23L: SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ({air-supply arrangements for fluent fuels F23C;} firebridges with means for feeding air or steam F23M3/04; baffles or shields with air supply passages F23M9/04); VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS {(dampers and throat restrictors for open fire-places F24; air inlet valves for open fire fronts F24)}; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An exhaust handling system comprising: an exhaust pipe having an exhaust outlet, said exhaust outlet having a nozzle arranged to vent exhaust gas; at least one acceleration jet arranged to project an air flow at a velocity head greater than that of the vented exhaust gas; wherein the at least one acceleration jet and exhaust outlet are positioned to project the air flow so as to impinge on a path of said vented exhaust gas, and consequently transfer velocity head to the vented exhaust gas. ## Claims ### Claim 1 An exhaust handling system comprising an exhaust pipe having an exhaust outlet, said exhaust outlet having a nozzle arranged to vent exhaust gas; at least one acceleration jet arranged to project an air flow at a velocity head greater than that of the vented exhaust gas; wherein the at least one acceleration jet and exhaust outlet are positioned to project the air flow so as to impinge on a path of said vented exhaust gas, and consequently transfer velocity head to the vented exhaust gas. ### Claim 2 (depends on 1) The exhaust handling system according to claim 1, wherein there are two acceleration jets positioned on diametrically opposed sides of the exhaust outlet. ### Claim 3 (depends on 1) The exhaust handling system according to claim 1, wherein the air flow path is parallel to the exhaust gas path with impingement of said exhaust gas as a result of an expansion plume of said air flow and exhaust gas. ### Claim 4 (depends on 1) The exhaust handling system according to claim 1, wherein the air flow path intersects the flow path of said exhaust gas. ### Claim 5 (depends on 1) The exhaust handling system according to claim 1, wherein there is a plurality of acceleration jets positioned on circumferentially about the exhaust outlet. ### Claim 6 (depends on 5) The exhaust handling system according to claim 5, wherein there is four acceleration jets positioned circumferentially about the exhaust outlet. ### Claim 7 (depends on 1) The exhaust handling system according to claim 1, wherein longitudinal axes of said acceleration jets are inclined to the flow path of said vented exhaust gas. ### Claim 8 (depends on 1) The exhaust handling system according to claim 1, wherein the at least one acceleration jet includes an inlet cone at an intake portion, said inlet cone arranged to reduce turbulent flow at said intake portion. ### Claim 9 (depends on 1) The exhaust handling system according to claim 1, wherein the acceleration jet includes a protective member at the intake, said protective member arranged to block the entry of foreign objects into the acceleration jet. ### Claim 10 (depends on 9) The exhaust handling system according to claim 9, wherein said protective member includes a heating element to maintain the temperature of said acceleration jet. ### Claim 11 (depends on 1) The exhaust handling system according to claim 1, wherein said acceleration jets include a sound attenuation device. ### Claim 12 (depends on 1) The exhaust handling system according to claim 1, wherein said acceleration jets include a vibration isolating device ### Claim 13 (depends on 12) The exhaust handling system according to claim 12, wherein said vibration isolating device is positioned at a centre of the acceleration jet and engine exhaust pipe and arranged to isolate the exhaust handling system from sources of vibration. ### Claim 14 (depends on 1) The exhaust handling system according to claim 1, wherein the exhaust outlet includes vanes to control the flow path of the exhaust gas. ### Claim 15 (depends on 1) The exhaust handling system according to claim 1, claim 1, wherein the acceleration jets include vanes to control the flow path of the accelerated air flow. ### Claim 16 (depends on 1) The exhaust handling system according to claim 1, wherein the nozzle of the exhaust pipe is circular. ### Claim 17 A method of handling engine exhaust gases comprising the steps of: venting exhaust gas; projecting an air flow at a selective velocity head; positioning a flow path of said air flow so as to impinge on a path of said vented exhaust gas; and transferring velocity head to the vented exhaust gas. ### Claim 18 (depends on 17) The method according to claim 17, wherein the air flow path is parallel to the exhaust gas path with impingement of said exhaust gas as a result of an expansion plume of said air flow and exhaust gas. ### Claim 19 (depends on 17) The method according to claim 17, wherein the air flow path intersects the flow path of said exhaust gas. ### Claim 20 (depends on 17) The method according to claim 17, wherein a longitudinal axis of said air flow path is inclined to a longitudinal axis of said vented exhaust gas path.