# US 2014/0151143 A1 · Construction machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0151143 A1 - Document ID: US20140151143A1 - Status: Published application - Kind: A1 - Application number: 14/233,022 - Filed: 2012-07-11 - Published: 2014-06-05 - Earliest claimed: 2011-07-19 - Assignees: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.); Kobelco Construction Machinery Co., Ltd. - Inventors: Hajime Nakashima; Masaru Numasawa; Kazuhiro Ueda; Zenzo Yamaguchi; Yasumasa Kimura - Web page: https://patentgrep.com/patent/US20140151143A1 ## CPC - E02F 9/0866: {Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment} - B60K 11/06: with air cooling - E02D 17/13: Foundation slots {or slits}; Implements for making these slots {or slits} - F01N 3/05: by means of air, e.g. by mixing exhaust with air (silencers working by addition of air to exhaust F01N1/14; arrangements for the supply of additional air for the thermal or catalytic conversion of noxious components of exhaust F01N3/30) - F01N 13/082: {of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation (F01N13/20 takes precedence)} - B60K 13/04: concerning exhaust - B60Y 2200/412: Excavators - F01N 2590/08: for heavy duty applications, e.g. trucks, buses, tractors, locomotives - Y02T 10/12: Improving ICE efficiencies - E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00) - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - E02D: FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B); UNDERGROUND OR UNDERWATER STRUCTURES {(tunnels, tunnelling, mining E21)} - 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) - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A construction machine includes: an engine room provided with an intake opening and a discharge opening; a fan for sucking cooling air into the engine room through the intake opening; a duct provided in the engine room so as to communicate with the discharge opening and discharging the cooling air sucked into the engine room to an outside of the engine room through the discharge opening; and an exhaust gas pipe guiding exhaust gas discharged from the engine into the duct. A portion on a distal end side of the exhaust gas pipe is inserted into the duct, and the inserted portion of the exhaust gas pipe inserted into the duct is formed with an exhaust hole which causes the exhaust gas to be discharged in a direction different from a flowing direction of discharge wind in the duct through the exhaust hole. ## Claims ### Claim 1 A construction machine comprising: an engine room provided with an intake opening and a discharge opening; a fan for sucking cooling air into the engine room through the intake opening; a duct provided in the engine room so as to communicate with the discharge opening and discharging the cooling air sucked into the engine room to an outside of the engine room through the discharge opening; and an exhaust gas pipe guiding exhaust gas discharged from the engine into the duct, wherein a portion on a distal end side of the exhaust gas pipe is inserted into the duct, and the inserted portion of the exhaust gas pipe inserted into the duct is formed with an exhaust hole which causes the exhaust gas to be discharged in a direction different from a flowing direction of discharge wind in the duct through the exhaust hole. ### Claim 2 A construction machine comprising: an engine room provided with an intake opening and a discharge opening; a fan for sucking cooling air into the engine room through the intake opening; a duct provided in the engine room so as to communicate with the discharge opening and discharging the cooling air sucked into the engine room to an outside of the engine room through the discharge opening; and an exhaust gas pipe guiding exhaust gas discharged from the engine into the duct, wherein a portion on a distal end side of the exhaust gas pipe is inserted into the duct, and the inserted portion of the exhaust gas pipe inserted into the duct is formed with an exhaust hole which causes the exhaust gas to be discharged so as to be dispersed in a longitudinal direction of the inserted portion through the exhaust hole. ### Claim 3 A construction machine comprising: an engine room provided with an intake opening and a discharge opening; a fan for sucking cooling air into the engine room through the intake opening; a duct provided in the engine room so as to communicate with the discharge opening and discharging the cooling air sucked into the engine room to an outside of the engine room through the discharge opening; and an exhaust gas pipe guiding exhaust gas discharged from the engine into the duct, wherein a portion on a distal end side of the exhaust gas pipe is inserted into the duct, and the inserted portion of the exhaust gas pipe inserted into the duct is formed with an exhaust hole which causes the exhaust gas to be discharged in a direction different from a flowing direction of discharge wind in the duct through the exhaust hole and causes the exhaust gas to be discharged so as to be dispersed in a longitudinal direction of the inserted portion through the exhaust hole. ### Claim 4 (depends on 1) The construction machine according to claim 1, wherein the inserted portion of the exhaust gas pipe is inserted into the duct so as to extend in a direction intersecting an extension direction of the duct. ### Claim 5 (depends on 4) The construction machine according to claim 4, wherein the exhaust hole is formed in a semi-circumferential portion of the inserted portion of the exhaust gas pipe, the semi-circumferential portion being positioned on a leeward side of the discharge wind in the duct. ### Claim 6 (depends on 1) The construction machine according to claim 1, wherein the exhaust holes are formed at respective positions different circumferentially of the inserted portion of the exhaust gas pipe from each other. ### Claim 7 (depends on 1) The construction machine according to any one of claim 1, wherein the exhaust holes are formed at respective positions different longitudinally of the inserted portion of the exhaust gas pipe from each other. ### Claim 8 (depends on 7) The construction machine according to claim 7, wherein an opening area of the exhaust holes per unit length of the inserted portion gradually decreases toward the distal end side of the inserted portion so that amounts of the exhaust gas discharged from the exhaust holes are substantially equalized in the longitudinal direction of the inserted portion. ### Claim 9 (depends on 1) The construction machine according to any one of claim 1, wherein the duct is formed with at least one bent portion, and the inserted portion of the exhaust gas pipe is disposed at a position upstream of the bent portion in the flowing direction of the discharge wind in the duct. ### Claim 10 (depends on 9) The construction machine according to claim 9, wherein the duct has an outlet-side opening which is an outlet of the discharge wind flowing through the duct, and the inserted portion of the exhaust gas pipe is provided in a state where the outlet-side opening of the duct is not visible from the outside through the outlet-side opening of the duct. ### Claim 11 (depends on 2) The construction machine according to claim 2, wherein the inserted portion of the exhaust gas pipe is inserted into the duct so as to extend in a direction intersecting an extension direction of the duct. ### Claim 12 (depends on 11) The construction machine according to claim 11, wherein the exhaust hole is formed in a semi-circumferential portion of the inserted portion of the exhaust gas pipe, the semi-circumferential portion being positioned on a leeward side of the discharge wind in the duct. ### Claim 13 (depends on 2) The construction machine according to claim 2, wherein the exhaust holes are formed at respective positions different circumferentially of the inserted portion of the exhaust gas pipe from each other. ### Claim 14 (depends on 2) The construction machine according to claim 2, wherein the exhaust holes are formed at respective positions different longitudinally of the inserted portion of the exhaust gas pipe from each other. ### Claim 15 (depends on 14) The construction machine according to claim 14, wherein an opening area of the exhaust holes per unit length of the inserted portion gradually decreases toward the distal end side of the inserted portion so that amounts of the exhaust gas discharged from the exhaust holes are substantially equalized in the longitudinal direction of the inserted portion. ### Claim 16 (depends on 2) The construction machine according to claim 2, wherein the duct is formed with at least one bent portion, and the inserted portion of the exhaust gas pipe is disposed at a position upstream of the bent portion in the flowing direction of the discharge wind in the duct. ### Claim 17 (depends on 16) The construction machine according to claim 16, wherein the duct has an outlet-side opening which is an outlet of the discharge wind flowing through the duct, and the inserted portion of the exhaust gas pipe is provided in a state where the outlet-side opening of the duct is not visible from the outside through the outlet-side opening of the duct. ### Claim 18 (depends on 3) The construction machine according to claim 3, wherein the inserted portion of the exhaust gas pipe is inserted into the duct so as to extend in a direction intersecting an extension direction of the duct. ### Claim 19 (depends on 18) The construction machine according to claim 18, wherein the exhaust hole is formed in a semi-circumferential portion of the inserted portion of the exhaust gas pipe, the semi-circumferential portion being positioned on a leeward side of the discharge wind in the duct. ### Claim 20 (depends on 3) The construction machine according to claim 3, wherein the exhaust holes are formed at respective positions different circumferentially of the inserted portion of the exhaust gas pipe from each other. ### Claim 21 (depends on 3) The construction machine according to claim 3, wherein the exhaust holes are formed at respective positions different longitudinally of the inserted portion of the exhaust gas pipe from each other. ### Claim 22 (depends on 21) The construction machine according to claim 21, wherein an opening area of the exhaust holes per unit length of the inserted portion gradually decreases toward the distal end side of the inserted portion so that amounts of the exhaust gas discharged from the exhaust holes are substantially equalized in the longitudinal direction of the inserted portion. ### Claim 23 (depends on 3) The construction machine according to claim 3, wherein the duct is formed with at least one bent portion, and the inserted portion of the exhaust gas pipe is disposed at a position upstream of the bent portion in the flowing direction of the discharge wind in the duct. ### Claim 24 (depends on 23) The construction machine according to claim 23, wherein the duct has an outlet-side opening which is an outlet of the discharge wind flowing through the duct, and the inserted portion of the exhaust gas pipe is provided in a state where the outlet-side opening of the duct is not visible from the outside through the outlet-side opening of the duct.