# US 10,767,600 B2 · Evaporative emissions control for a vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,600 B2 - Document ID: US10767600B2 - Status: Granted - Kind: B2 - Application number: 15/387,662 - Filed: 2016-12-22 - Published: 2018-06-28 - Granted: 2020-09-08 - Earliest claimed: 2016-12-22 - Assignees: Polaris Industries Inc. - Applicants: Polaris Industries Inc. - Inventors: Jonathon P. Oakden-Graus; Lindsay S. Borakove; Greg W. Fedelem; Nick S. Levin; Bradley W. Evenson - Web page: https://patentgrep.com/patent/US10767600B2 ## CPC - F02M 25/089: {Layout of the fuel vapour installation} - B60K 5/04: with the engine main axis, e.g. crankshaft axis, transversely to the longitudinal centre line of the vehicle - B60K 15/03504: {adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems} - B60K 15/03519: {Valve arrangements in the vent line} - F02B 75/18: Multi-cylinder engines (scavenging aspects F02B25/00) - F02D 41/004: {Control of the valve or purge actuator, e.g. duty cycle, closed loop control of position} - F02M 25/0836: {Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold} - F02M 25/0854: {Details of the absorption canister} - F02M 25/0872: {Details of the fuel vapour pipes or conduits} - B60K 2015/0358: {the venting is actuated by specific signals or positions of particular parts} - B60Y 2200/20: Off-Road Vehicles - F02B 2075/1808: {two} - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - 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 - 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) - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY ## Abstract A fuel system comprising a fuel tank, a mixing volume configured to mix fuel vapor and air, the mixing volume comprising an outlet configured to be fluidly coupled to an engine, and a fuel vapor line configured to fluidly couple the fuel tank to the mixing volume. ## Claims ### Claim 1 A fuel system comprising: a fuel tank; a mixing volume configured to mix fuel vapor and air, the mixing volume comprising an inlet and an outlet, the outlet configured to be fluidly coupled to an engine; at least one check valve positioned between the outlet of the mixing volume and the engine; and a fuel vapor line configured to fluidly couple the fuel tank to the inlet of the mixing volume, the inlet and the outlet of the mixing volume being separate, and the mixing volume being configured to receive a mixture of air and fuel vapor from the fuel vapor line, wherein at least a portion of the air within the mixture is received through an air intake. ### Claim 2 (depends on 1) The fuel system of claim 1, wherein the mixing volume is fluidly coupled to at least one throttle body of the engine. ### Claim 3 (depends on 2) The fuel system of claim 2, wherein the mixing volume is fluidly coupled to the at least one throttle body upstream of an outlet of the at least one throttle body of the engine. ### Claim 4 (depends on 1) The fuel system of claim 1, wherein the fuel system is positioned within a utility vehicle comprising an open-air operator area generally surrounded by an upper frame assembly extending to a position above seating positioned within the open-air operator area. ### Claim 5 (depends on 1) The fuel system of claim 1, further comprising a purge valve positioned along the fuel vapor line between the fuel tank and the mixing volume, the purge valve being configured to provide fuel vapor to the mixing volume. ### Claim 6 (depends on 5) The fuel system of claim 5, wherein the purge valve is actuated at predetermined, uniform time intervals. ### Claim 7 (depends on 5) The fuel system of claim 5, wherein the purge valve is actuated based on at least one of an engine speed, an engine intake temperature, an engine load, a throttle position, a coolant temperature, a time period at idle, a concentration of fuel vapor within the fuel vapor line, and an amount of fuel vapor purged at a time following ignition of the engine. ### Claim 8 (depends on 5) The fuel system of claim 5, wherein the mixing volume is less than approximately 300 millimeters from the engine. ### Claim 9 (depends on 5) The fuel system of claim 5, wherein the purge valve is positioned upstream of the mixing volume. ### Claim 10 (depends on 1) The fuel system of claim 1, wherein the mixing volume further comprises a baffle, the inlet being configured to receive the fuel vapor and air and the baffle being positioned between the inlet and the outlet. ### Claim 11 (depends on 10) The fuel system of claim 10, wherein the baffle is positioned within the mixing volume. ### Claim 12 (depends on 1) The fuel system of claim 1, wherein the inlet and the outlet are positioned on a first side surface of the mixing volume, and the mixing volume is configured to flow the mixed fuel vapor and air in an arcuate flow path between the inlet and the outlet. ### Claim 13 (depends on 1) The fuel system of claim 1, wherein the mixing volume is positioned vertically higher than a cylinder head of the engine. ### Claim 14 (depends on 13) The fuel system of claim 13, wherein the mixing volume is laterally spaced apart from the cylinder head of the engine. ### Claim 15 (depends on 1) The fuel system of claim 1, further including at least one check valve positioned between the mixing volume and the engine. ### Claim 16 (depends on 1) The fuel system of claim 1, further comprising an evaporation canister fluidly coupled between the fuel tank and the mixing volume.