# US 7,607,420 B2 · Fuel-evaporated gas processing system and electromagnetic valve device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,607,420 B2 - Document ID: US7607420B2 - Status: Granted - Kind: B2 - Application number: 11/988,233 - Filed: 2006-05-25 - Published: 2009-03-26 - Granted: 2009-10-27 - Earliest claimed: 2005-08-12 - Assignees: Mitsubishi Electric Corporation - Inventors: Masatoshi Ueda; Tatsuya Matsumoto - Web page: https://patentgrep.com/patent/US7607420B2 ## CPC - F02M 25/089: {Layout of the fuel vapour installation} - F02M 25/0827: {by monitoring engine running conditions} - 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: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF ## Abstract A fuel-evaporated gas processing system includes an input port taking in evaporated gas evaporated in a fuel tank; output ports supplying the evaporated gas taken in through the input port to an intake system of an engine; a chamber interposed between the input port and the output ports; an electromagnetic valve device including at least first and second electromagnetic valves disposed in the connection between the input port or the output ports and the chamber, either of the input port or the output ports being branched off into a plurality of sections, and perform opening and closing operations in response to a driving signal; and a valve control means driving the first and the second electromagnetic valves of the electromagnetic valve device. ## Claims ### Claim 1 A fuel-evaporated gas processing system taking in volatilized gas evaporated in a fuel tank, temporarily adsorbing the gas in a canister, and supplying the evaporated gas in the canister to an intake system of an engine, the fuel-evaporated gas processing system comprising: an input port taking in the evaporated gas from the fuel tank; output ports supplying the evaporated gas taken in through the input port to the intake system of the engine; a chamber interposed between the input port and the output ports; an electromagnetic valve device including at least first and second electromagnetic valves disposed in the connection between the input port or the output ports and the chamber, either of the input port or the output ports being branched off into a plurality of sections, and perform opening and closing operations in response to a driving signal; and a valve control means for driving the first and the second electromagnetic valves of the electromagnetic valve device. ### Claim 2 (depends on 1) The fuel-evaporated gas processing system according to claim 1, wherein the first and the second electromagnetic valves have almost the same flow rate characteristic. ### Claim 3 (depends on 1) The fuel-evaporated gas processing system according to claim 1, wherein the valve control means is for differencing control signal of the first electromagnetic valve and that of the second electromagnetic valve, and controls to have the first electromagnetic valve and the second electromagnetic valve have the control timing mutually different from each other in a canceling direction of pressure fluctuations of the evaporated gas caused by the opening and closing operations of the first electromagnetic valve. ### Claim 4 (depends on 3) The fuel-evaporated gas processing system according to claim 3, wherein either the first electromagnetic valve or the second electromagnetic valve is a reverse suction type in which negative pressure is applied in an opposite direction to a valve closing direction of an armature, and when the flow rate of the gas flowing through the electromagnetic valve device is equal to or less than a predetermined flow rate, the electromagnetic valve of the reverse suction type is driven. ### Claim 5 (depends on 4) The fuel-evaporated gas processing system according to claim 4, wherein the electromagnetic valve of the reverse suction type has the maximum flow rate smaller than that of the other electromagnetic valve. ### Claim 6 (depends on 3) The fuel-evaporated gas processing system according to claim 3, wherein either the first electromagnetic valve or the second electromagnetic valve has the maximum flow rate smaller than that of the other electromagnetic valve. ### Claim 7 (depends on 1) The fuel-evaporated gas processing system according to claim 1, wherein the chamber is formed of a housing section provided in the electromagnetic valve device and a cap section of the housing section. ### Claim 8 (depends on 1) The fuel-evaporated gas processing system according to claim 1, wherein the first electromagnetic valve is composed of a plurality of electromagnetic valves or the second electromagnetic valve is composed of a plurality of electromagnetic valves. ### Claim 9 An electromagnetic valve device comprising: an input port taking in volatilized gas from a fuel tank; output ports supplying the evaporated gas taken in through the input port to an intake system of an engine; a chamber interposed between the input port and the output ports; and at least first and second electromagnetic valves disposed in the connection between the input port or the output ports and the chamber, either of the input port or the output ports being branched off into a plurality of sections, and perform opening and closing operations in response to a driving signal. ### Claim 10 (depends on 9) The electromagnetic valve device according to claim 9, wherein the first and the second electromagnetic valves each comprise a terminal used for driving. ### Claim 11 (depends on 9) The electromagnetic valve device according to claim 9, wherein the first and the second electromagnetic valves have almost the same flow rate characteristic. ### Claim 12 (depends on 9) The electromagnetic valve device according to claim 9, wherein the first electromagnetic valve or the second electromagnetic valve is the reverse suction type to which negative pressure is applied in an opposite direction to a valve closing direction of an armature. ### Claim 13 (depends on 12) The electromagnetic valve device according to claim 12, wherein the electromagnetic valve of the reverse suction type has the maximum flow rate smaller than that of the other electromagnetic valve. ### Claim 14 (depends on 9) The electromagnetic valve device according to claim 9, wherein the first electromagnetic valve or the second electromagnetic valve has the maximum flow rate smaller than that of the other electromagnetic valve. ### Claim 15 (depends on 9) The electromagnetic valve device according to claim 9, wherein the chamber is formed of a housing section of a valve unit formed by integrally unitizing at least two electromagnetic valves, and a cap section of the housing section. ### Claim 16 (depends on 9) The electromagnetic valve device according to claim 9, wherein the first electromagnetic valve is composed of a plurality of electromagnetic valves or the second electromagnetic valve is composed of a plurality of electromagnetic valves.