Abstract: Provided is an information providing system capable of promoting use of services relating to a lawn. An information providing system 1 includes a gardener terminal 200 and a customer terminal 300 communicably connected to the gardener terminal 200. The gardener terminal 200 includes a lawn state information generating unit 211, and the customer terminal 300 includes a lawn selecting unit 311. In a case in which a contract for a transaction relating to a lawn is concluded between a customer 30 using the customer terminal 300 and a gardener 20 using the gardener terminal 200, the lawn state information generating unit 211 generates lawn state information indicating a state of the lawn provided by the gardener 20, and transmits the lawn state information to the customer terminal 300, and the lawn selecting unit 311 selects the lawn provided by the gardener 20 based on the lawn state information.

Abstract: Provided is an information providing system capable of promoting use of services relating to a lawn. An information providing system 1 includes: a gardener terminal 200 that provides gardener information regarding a service relating to a lawn; a customer terminal 300 that is communicably connected to the gardener terminal 200 and provides request information relating to the lawn; and an information providing device 100 that is communicably connected to the gardener terminal 200 and the customer terminal 300.

Abstract: Provided is an information providing system capable of promoting the use of services relating to a lawn. The information providing system includes a gardener terminal and a customer terminal communicably connected to the gardener terminal. The gardener terminal includes the first fee setting unit that, in a case in which a contract for a transaction relating to a lawn is established between the customer using the customer terminal and the gardener using the gardener terminal, sets a first fee for the transaction relating to the lawn, based on an amount of the lawn produced by the transaction relating to the lawn, and the lawn state information generating unit that generates lawn state information including a use state of the lawn and the first fee, and transmits the lawn state information to the customer terminal.

Abstract: A gas fuel supply apparatus is constructed to be capable of supplying any one of propane gas and butane gas to a gas engine while switching between the propane gas and the butane gas. A check valve is provided in a gas fuel supply passages corresponding to a gas canister containing the gas fuel of a low working pressure (propane gas). The check valve prevents the gas fuel of a higher working pressure (butane gas) from flowing from a downstream side of the check valve to an upstream side of the check valve.

Abstract: A gas engine regulator includes a decompression chamber defined internally of the regulator and having a gas inlet through which liquefied gas fuel enters and a gas outlet through which the gas fuel exits. The gas inlet is provided at one end side of the decompression chamber while the gas outlet is provided at an opposite end side laterally spaced via a space from the one end side. The regulator also includes a partitioning wall disposed to surround the gas outlet and having a gas passage communicating with the gas outlet, the gas passage having a passage inlet disposed upwardly of the gas inlet.

Abstract: An engine fuel feeding device that is small-sized and easy to start. A cutoff valve is disposed upstream from a primary regulator provided to a fuel passage from a fuel feeding source to an engine. The cutoff valve is provided integrally with the primary regulator. When the gas engine is stopped, the fuel feeding passage is blocked in front of the primary regulator, gas fuel does not flow in the downstream direction that includes the primary regulator, and the ability of the gas engine to start is enhanced.

Abstract: A gas fuel supply apparatus includes: first and second mouthpiece attachment sections capable of detachably attaching thereto mouthpieces of first and second gas containers and provided in communication with each other; and first and second check valves provided in a communication passage, communicating between the mouthpiece attachment sections, in corresponding relation to the first and second gas containers. The first and second check valves prevent a gas fuel, let out from any one of the first and second gas containers, from flowing into the other of the gas containers.

Abstract: A fuel supplying apparatus is configured to supply a gas engine with gas fuel in such a manner that tar separated from the gas fuel is guided to the engine. The apparatus includes a primary regulator and a secondary regulator formed integrally with the primary regulator. The primary regulator communicates with the secondary regulator through a gas passage. The secondary regulator is disposed below the primary regulator. The secondary regulator has a gas inlet for taking in the gas fuel and the tar that have passed from the primary regulator through the gas passage. The secondary regulator has an orifice disposed below the gas inlet for discharging the gas fuel and the tar. The tar separated from the gas fuel flows from the primary regulator through the gas passage and the gas inlet into the secondary regulator and discharged out of the orifice into the engine.

Abstract: In a multiple gas fuel delivery system for interchangeably supplying a plurality of gas fuels having different supply pressures to an internal combustion engine, at least a pair of fuel passages extend from a gas fuel inlet (6a) to a fuel ejection nozzle (12) for delivering the gas fuel to a carburetor, and are provided with respective metering jets (13, 14). One of the fuel passages is provided with a pressure responsive valve (15) that communicates only the first metering jet (14) for delivering the fuel gas to the carburetor when a gas fuel of a relatively high pressure is used, and communicates both the first and second metering jets (13, 14) for delivering the fuel gas to the carburetor when a gas fuel of a relatively low pressure is used. Therefore, a flow switching valve is not required, and the passage structure can be simplified. Also, the pressure responsive valve (15) is actuated by the pressure of the fuel, and no manual selection is required when a different gas fuel is selected.

Abstract: A fuel supply device for a gas engine is provided that includes a vaporizer, a primary regulator, a fuel changeover valve, a second inlet passage to which is introduced a second fuel fed out from a second fuel source, and a common outlet passage and can selectively connect the first and second inlet passages to the outlet passage, a common secondary regulator that regulates the pressure of the first fuel or second fuel so that it is at substantially atmospheric pressure and supplies it to a mixer, and a cutoff valve that opens/closes a fuel passage between the fuel changeover valve and the secondary regulator in response to operation/stopping of a gas engine, the vaporizer, the primary regulator, the fuel changeover valve, the cutoff valve, and the secondary regulator being integrally connected to each other to form a unit.

Abstract: A gas fuel supply apparatus includes: first and second mouthpiece attachment sections capable of detachably attaching thereto mouthpieces of first and second gas containers and provided in communication with each other; and first and second check valves provided in a communication passage, communicating between the mouthpiece attachment sections, in corresponding relation to the first and second gas containers. The first and second check valves prevent a gas fuel, let out from any one of the first and second gas containers, from flowing into the other of the gas containers.

Abstract: A gas fuel supply apparatus is constructed to be capable of supplying any one of propane gas and butane gas to a gas engine while switching between the propane gas and the butane gas. A check valve is provided in a gas fuel supply passages corresponding to a gas canister containing the gas fuel of a low working pressure (propane gas). The check valve prevents the gas fuel of a higher working pressure (butane gas) from flowing from a downstream side of the check valve to an upstream side of the check valve.

Abstract: A gas engine regulator includes a decompression chamber defined internally of the regulator and having a gas inlet through which liquefied gas fuel enters and a gas outlet through which the gas fuel exits. The gas inlet is provided at one end side of the decompression chamber while the gas outlet is provided at an opposite end side laterally spaced via a space from the one end side. The regulator also includes a partitioning wall disposed to surround the gas outlet and having a gas passage communicating with the gas outlet, the gas passage having a passage inlet disposed upwardly of the gas inlet.

Abstract: An engine-start is inhibited when a gas engine is tilted, and the engine is immediately stopped. A shutoff valve (21) is provided on a liquefied fuel passage (15) supplying a liquefied fuel to a vaporizing chamber (14) from a cylinder (16). The shutoff valve (21) is provided with a diaphragm (28) to which a pulsation pressure of a crank chamber (4) is applied, and opens the liquefied fuel passage (15) if a negative pressure is applied to the diaphragm (28). A tilting shutoff valve (39) is provided in a pressure passage (34) transmitting the pulsation pressure to the shutoff valve (21). The tilting shutoff valve (39) which has a ball valve releases the pulsation pressure of the crank chamber (4) to an atmospheric air. If the pulsation pressure is open to the atmospheric air, the diaphragm (28) can not operate. Accordingly, the liquefied fuel passage 15 is kept being shut off, and is rapidly shut off in response to the tilt during the operation.

Abstract: A fuel supply system for a gas engine is provided that includes a liquefied gas fuel supply source (16), a pressure regulator (10) for regulating the pressure after liquefied fuel fed from the liquefied gas fuel supply source (16) is converted into vaporized fuel, and a mixer for mixing the pressure-regulated vaporized fuel with air and supplying it to a gas engine (E), a shutoff valve (21) being provided in a liquefied fuel passage (15) between the liquefied gas fuel supply source (16) and the pressure regulator (13), wherein the shutoff valve (21) is formed so as to be opened by manual cranking of the gas engine (E). This enables the shutoff valve of the liquefied fuel passage to be opened from when the gas engine is started, even for a gas engine that is not equipped with a battery or even when a battery of a gas engine is not sufficiently charged.

Abstract: A fuel supplying apparatus is configured to supply a gas engine with gas fuel in such a manner that tar separated from the gas fuel is guided to the engine. The apparatus includes a primary regulator and a secondary regulator formed integrally with the primary regulator. The primary regulator communicates with the secondary regulator through a gas passage. The secondary regulator is disposed below the primary regulator. The secondary regulator has a gas inlet for taking in the gas fuel and the tar that have passed from the primary regulator through the gas passage. The secondary regulator has an orifice disposed below the gas inlet for discharging the gas fuel and the tar. The tar separated from the gas fuel flows from the primary regulator through the gas passage and the gas inlet into the secondary regulator and discharged out of the orifice into the engine.

Abstract: An engine fuel feeding device that is small-sized and easy to start. A cutoff valve is disposed upstream from a primary regulator provided to a fuel passage from a fuel feeding source to an engine. The cutoff valve is provided integrally with the primary regulator. When the gas engine is stopped, the fuel feeding passage is blocked in front of the primary regulator, gas fuel does not flow in the downstream direction that includes the primary regulator, and the ability of the gas engine to start is enhanced.

Abstract: In a multiple gas fuel delivery system for interchangeably supplying a plurality of gas fuels having different supply pressures to an internal combustion engine, at least a pair of fuel passages extend from a gas fuel inlet (6a) to a fuel ejection nozzle (12) for delivering the gas fuel to a carburetor, and are provided with respective metering jets (13, 14). One of the fuel passages is provided with a pressure responsive valve (15) that communicates only the first metering jet (14) for delivering the fuel gas to the carburetor when a gas fuel of a relatively high pressure is used, and communicates both the first and second metering jets (13, 14) for delivering the fuel gas to the carburetor when a gas fuel of a relatively low pressure is used. Therefore, a flow switching valve is not required, and the passage structure can be simplified. Also, the pressure responsive valve (15) is actuated by the pressure of the fuel, and no manual selection is required when a different gas fuel is selected.

Abstract: An engine-start is inhibited when a gas engine is tilted, and the engine is immediately stopped. A shutoff valve (21) is provided on a liquefied fuel passage (15) supplying a liquefied fuel to a vaporizing chamber (14) from a cylinder (16). The shutoff valve (21) is provided with a diaphragm (28) to which a pulsation pressure of a crank chamber (4) is applied, and opens the liquefied fuel passage (15) if a negative pressure is applied to the diaphragm (28). A tilting shutoff valve (39) is provided in a pressure passage (34) transmitting the pulsation pressure to the shutoff valve (21). The tilting shutoff valve (39) which has a ball valve releases the pulsation pressure of the crank chamber (4) to an atmospheric air. If the pulsation pressure is open to the atmospheric air, the diaphragm (28) can not operate. Accordingly, the liquefied fuel passage 15 is kept being shut off, and is rapidly shut off in response to the tilt during the operation.

Abstract: A fuel supply device for a gas engine is provided that includes a vaporizer (17) that gasifies a first fuel (FA), a primary regulator (18) that regulates the pressure of the first fuel (FA) introduced from the vaporizer (17), a fuel changeover valve (19) that has a first inlet passage (40A) to which is introduced the first fuel (FA) fed out from the primary regulator (18), a second inlet passage (40B) to which is introduced a second fuel (FB) fed out from a second fuel source (11B), and a common outlet passage (41) and can selectively connect the first and second inlet passages (40A, 40B) to the outlet passage (41), a common secondary regulator (21) that regulates the pressure of the first fuel (FA) or second fuel (FB) fed out from the outlet passage (41) of the fuel changeover valve (19) so that it is at substantially atmospheric pressure and supplies it to a mixer (3), and a cutoff valve (20) that opens/closes a fuel passage between the fuel changeover valve (19) and the secondary regulator (21) in response