# US 12,214,657 B2 · Tractor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,214,657 B2 - Document ID: US12214657B2 - Status: Granted - Kind: B2 - Application number: 17/969,975 - Filed: 2022-10-20 - Published: 2023-02-09 - Granted: 2025-02-04 - Earliest claimed: 2017-03-30 - Assignees: Yanmar Power Technology Co., Ltd. - Applicants: Yanmar Power Technology Co., Ltd. - Inventors: Yoshiaki Kurokawa - Web page: https://patentgrep.com/patent/US12214657B2 ## CPC - B60K 15/063: Arrangement of tanks - F01N 3/2066: {Selective catalytic reduction [SCR]} - B60K 13/04: concerning exhaust - B60Y 2200/221: Tractors - F01N 2590/08: for heavy duty applications, e.g. trucks, buses, tractors, locomotives - F01N 2610/02: the substance being ammonia or urea - F01N 2610/1406: Storage means for substances, e.g. tanks or reservoirs - Y02A 50/20: Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters - 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) - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE ## Abstract A tractor including: a traveling body having an engine; a post-processing device configured to purify exhaust gas of the engine; and a reductant tank configured to store a reductant to be supplied to the post-processing device. A pair of left and right fuel tanks are arranged respectively on left and right sides of a longitudinally midway portion of the traveling body. A tank-accommodation recess for accommodating a reductant tank is formed at a lower-front portion of one of the left and right fuel tanks. While the reductant tank is accommodated in the tank-accommodation recess, an upper front portion of the fuel tank and the reductant tank are aligned up and down. ## Claims ### Claim 1 A tractor comprising: a traveling body having an engine; a pair of left and right front wheels and a pair of left and right rear wheels to support the traveling body; one or more steps for getting on and off an operation unit on the traveling body; a fuel tank that supplies fuel to the engine; a post-processing device configured to purify exhaust gas of the engine and a reductant tank configured to store a reductant to be supplied to the post-processing device, and wherein: the reductant tank is arranged on either the left or right side of the traveling body, and in front of the steps; the pair of left and right front wheels are arranged in front of the reductant tank; a recess is formed on a front surface of the reductant tank; and the front surface of the reductant tank faces a front of the tractor. ### Claim 2 (depends on 1) The tractor according to claim 1, wherein the recess is being recessed in a forward-facing concave shape along an outer peripheral shape of a front wheel of the pair of left and right front wheels. ### Claim 3 (depends on 1) The tractor according to claim 1, wherein: a fender is provided on the front wheels; and the recess is formed on the front surface of the reductant tank and on a side where the fender is provided. ### Claim 4 (depends on 1) The tractor according to claim 1, wherein a fueling cylinder of the fuel tank is provided in front of the one or more steps and above the recess of the reductant tank. ### Claim 5 (depends on 1) The tractor according to claim 1, wherein a replenishing cylinder of the reductant tank is provided facing obliquely upward and outward behind the recess of the reductant tank and on an outer side surface of the reductant tank. ### Claim 6 (depends on 1) The tractor according to claim 1, wherein a fuel supply cylinder of the fuel tank and a replenishment cylinder of the reductant tank are arranged side by side in the width direction of the traveling body. ### Claim 7 (depends on 1) The tractor according to claim 1, wherein a rear surface of the reductant tank faces the one or more steps, and the rear surface is opposite the front surface of the reductant tank. ### Claim 8 (depends on 1) The tractor according to claim 1, wherein the one or more steps include multiple steps. ### Claim 9 (depends on 1) The tractor according to claim 1, wherein the front surface of the reductant tank faces a front wheel of the pair of left and right front wheels. ### Claim 10 A tractor comprising: a traveling body having an engine; a pair of left and right front wheels and a pair of left and right rear wheels to support the traveling body; one or more steps for getting on and off an operation unit on the traveling body; a fuel tank that supplies fuel to the engine; a post-processing device configured to purify exhaust gas of the engine and a reductant tank configured to store a reductant to be supplied to the post-processing device, wherein: the reductant tank is arranged on either the left or right side of the traveling body, and in front of the one or more steps; the pair of left and right front wheels are arranged in front of the reductant tank; a recess is formed on a front surface of the reductant tank; and the recess is recessed in a forward-facing concave shape along an outer peripheral shape of one front wheel of the pair of left and right front wheels. ### Claim 11 (depends on 10) The tractor according to claim 10, wherein: a fender is provided on the front wheels; and the recess is formed on the front surface of the reductant tank and on a side where the fender is provided. ### Claim 12 (depends on 10) The tractor according to claim 10, wherein a fueling cylinder of the fuel tank is provided in front of the one or more steps and above the recess of the reductant tank. ### Claim 13 (depends on 10) The tractor according to claim 10, wherein a replenishing cylinder of the reductant tank is provided facing obliquely upward and outward behind the recess of the reductant tank and on an outer side surface of the reductant tank. ### Claim 14 (depends on 10) The tractor according to claim 10, wherein a fuel supply cylinder of the fuel tank and a replenishment cylinder of the reductant tank are arranged side by side in the width direction of the traveling body. ### Claim 15 (depends on 10) The tractor according to claim 10, wherein a rear surface of the reductant tank faces the one or more steps, and the rear surface is opposite the front surface of the reductant tank. ### Claim 16 (depends on 10) The tractor according to claim 10, wherein the one or more steps include multiple steps. ### Claim 17 A tractor comprising: a traveling body having an engine; a pair of left and right front wheels and a pair of left and right rear wheels to support the traveling body; one or more steps for getting on and off an operation unit on the traveling body; a fuel tank that supplies fuel to the engine; a post-processing device configured to purify exhaust gas of the engine and a reductant tank configured to store a reductant to be supplied to the post-processing device, and wherein: the reductant tank is arranged on either the left or right side of the traveling body, and in front of the steps; the pair of left and right front wheels are arranged in front of the reductant tank; a recess is formed on a front surface of the reductant tank; and the front surface of the reductant tank faces a front wheel of the pair of left and right front wheels. ### Claim 18 (depends on 17) The tractor according to claim 17, wherein a rear surface of the reductant tank faces the one or more steps, and the rear surface is opposite the front surface of the reductant tank. ### Claim 19 (depends on 17) The tractor according to claim 17, wherein: a fender is provided on the front wheels; and the recess is formed on the front surface of the reductant tank and on a side where the fender is provided. ### Claim 20 (depends on 17) The tractor according to claim 17, wherein a fueling cylinder of the fuel tank is provided in front of the one or more steps and above the recess of the reductant tank.