# US 12,109,878 B2 · Tractor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,109,878 B2 - Document ID: US12109878B2 - Status: Granted - Kind: B2 - Application number: 18/506,503 - Filed: 2023-11-10 - Published: 2024-03-07 - Granted: 2024-10-08 - 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/US12109878B2 ## 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 comprising a traveling body having an engine; front wheels and rear wheels that support the traveling body; front fenders that cover the front wheels; steps for getting on and off an operation unit on the traveling body; a fuel tanks for supplying fuel to the engine; a post-processing device configured to purify exhaust gas of the engine; and a reducing agent tank that stores a reducing agent to be supplied to the post-processing device, wherein the reducing agent tank is accommodated in a tank recess of the fuel tank, wherein at least a portion of the reducing agent tank and the fuel tank are placed between the front fender and the steps, and wherein the fuel tank extends rearward from between the front fender and the step through the inward of the reducing agent tank in in the width direction of the machine body. ## 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 configured to support the traveling body; a pair of left and right front fenders that cover the pair of left and right front wheels; one or more steps for getting on and off an operation unit on the traveling body; a fuel tank configured to supplying fuel to the engine; a post-processing device configured to purify exhaust gas of the engine; and a reducing agent tank configured to store a reducing agent to be supplied to the post-processing device, wherein: the reducing agent tank is accommodated in a tank recess of the fuel tank, at least a portion of the reducing agent tank and a portion of the fuel tank are placed between a front fender of the pair of left and right front fenders and the one or more steps, and the fuel tank extends rearward from between the front fender and the one or more steps and along an inward side of the reducing agent tank in the width direction of the traveling body. ### Claim 2 (depends on 1) The tractor according to claim 1, wherein the portion of the fuel tank is provided at a position higher than an upper end of the one or more steps. ### Claim 3 (depends on 1) The tractor according to claim 1, wherein: the fuel tank is provided with a fueling cylinder for replenishing fuel, the reducing agent tank is provided with a supply cylinder for replenishing the reducing agent, and the front end of the fueling cylinder is located further forward than the supply cylinder. ### Claim 4 (depends on 1) The tractor according to claim 1, wherein: the fuel tank is provided with a fuel cylinder for replenishing fuel, the reducing agent tank is provided with a supply cylinder for replenishing the reducing agent, and the fueling cylinder is arranged at a higher position than the supply cylinder. ### Claim 5 (depends on 1) The tractor according to claim 1, wherein the fuel tank further extends rearward along an inward side of the one or more steps in the width direction of the traveling body and along an inward side of a rear wheel of the pair of left and right rear wheels in the width direction of the traveling body. ### Claim 6 (depends on 1) The tractor according to claim 1, wherein: the fuel cylinder of the fuel tank is provided above the reducing agent tank, the supply cylinder of the reducing agent tank is provided on an outer side surface of the reducing agent tank in the width direction of the traveling body, and the fuel cylinder and the supply cylinder 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 the inward side of the reducing agent tank in the width direction of the traveling body faces a center portion of the traveling body. ### Claim 8 (depends on 7) The tractor according to claim 7, wherein the center portion is positioned between a left side of the traveling body and a right side of the traveling body.