# US 10,309,081 B2 · Construction machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,081 B2 - Document ID: US10309081B2 - Status: Granted - Kind: B2 - Application number: 15/754,426 - Filed: 2016-10-03 - Published: 2018-08-23 - Granted: 2019-06-04 - Earliest claimed: 2015-10-06 - Assignees: Hitachi Construction Machinery Co., Ltd. - Applicants: Hitachi Construction Machinery Co., Ltd. - Inventors: Takuya Inukai; Yasuhiko Yoshino; Masao Kariya; Kazuhiko Mizoguchi - Web page: https://patentgrep.com/patent/US10309081B2 ## 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 11/02: with liquid cooling - E02F 3/32: working downwardly and towards the machine, e.g. with backhoes - E02F 9/00: Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00 (laying-out or take-up devices for trailing electric cables B66C) - F01N 13/008: {Mounting or arrangement of exhaust sensors in or on exhaust apparatus (sensor arrangements for engine control F02D41/1439)} - F02B 77/00: Component parts, details or accessories, not otherwise provided for - F02D 41/00: Electrical control of supply of combustible mixture or its constituents (F02D43/00 takes precedence {; control of engine starters F02N11/08, electrical control of engine ignition timing F02P5/145}) - E02F 9/0891: {Lids or bonnets or doors or details thereof (doors for cabins E02F9/163 takes precedence; for motor vehicles B62D25/10)} - F01N 2560/06: the means being a temperature sensor - 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 - 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) - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W) ## Abstract A construction machine according to the present invention includes electric components 20 and a cover member 21, and includes an inflow side opening 25 that allows cooling air generated by the cooling fan 16 to flow therein, and an outflow side opening 26 that allows the cooling air flowing in from the inflow side opening 25 to flow out, in which the cover member 21 is formed such that the inflow side opening 25 expands toward an upstream side of a flow of the cooling air with respect to a space formed between the cover member 21 and the post-treatment device 17, and having the electric components 20 therein, and a space between the post-treatment device 17 and the cover member 21 narrows from the inflow side opening 25 toward the outflow side opening 26. ## Claims ### Claim 1 A construction machine comprising: a main body; a working device that is mounted on the main body; an engine that is provided in the main body; a cooling fan that is provided in the main body; and a post-treatment device that is provided in the main body, and purifies exhaust gas of the engine, the construction machine comprising: electric components that are disposed in the post-treatment device; a cover member that is provided above the post-treatment device, and covers the electric components; an inflow side opening that is provided in a first end of the cover member located on an upstream side of a flow of cooling air generated by the cooling fan, and allows the cooling air to flow therein; an inflow side guide section that smoothly guides the cooling air flowing in from the inflow side opening to inside of the cover member, and is provided in the cover member; an outflow side opening that is provided in a second end of the cover member located on a downstream side of the flow of the cooling air, and allows the cooling air flowing in from the inflow side opening to flow out; a support member that is fixed to a mounting member disposed in the post-treatment device; and a fixing section that fixes the cover member to the support member, wherein the cover member is formed such that the inflow side guide section expands toward the upstream side of the flow of the cooling air with respect to a space formed between the cover member and the post-treatment device, and having the electric components therein, and a space between the post-treatment device and the cover member is formed so as to narrow from the inflow side opening toward the outflow side opening. ### Claim 2 (depends on 1) The construction machine according to claim 1, wherein a part of the cover member is formed in a shape along an arrangement form of the electric components. ### Claim 3 (depends on 1) The construction machine according to claim 1, wherein the cover member is composed of a single plate. ### Claim 4 (depends on 1) The construction machine according to claim 1, wherein the cover member has a heat radiation opening for radiating heat in the cover member to outside of the cover member when the engine is stopped. ### Claim 5 (depends on 1) The construction machine according to claim 1, wherein the electric components are collectively fixed to a mounting member provided in the post-treatment device through a bracket.