Abstract: In accordance with one implementation, a carburetor includes a body having a fluid passage formed therein and a counterbore located along the fluid passage. The counterbore has a first sealing surface and a central axis, and the body further includes a second sealing surface located radially closer to the central axis than is the first sealing surface. The carburetor also includes a plug affixed to the body at the counterbore and in contact with both of the first and second sealing surfaces. Engagement of the plug with the two sealing surfaces may improve the connection between the plug and carburetor body. In at least some implementations, the plug may be held in place without aid of an adhesive or other secondary connector or connection aid.

Abstract: A modified carburetor allows the fuel and air input ratio to be adjusted by varying the opening sizes in the carburetor. After the proper air opening size is determined and set, the fuel jet setting can be adjusted for cold starts and/or to fine tune the engine. The air opening setting may remain the same, regardless of engine speed. This allows the engine to create a vacuum of near zero to five inches of mercury or more, depending on the speed of the engine. A small air input opening setting may be used for the engine to create this vacuum. The higher the vacuum created, the better the fuel efficiency. The fuel from the modified carburetor then flows through a heated evaporator chamber that maintains this vacuum. This enhances and completes the evaporation process as the fuel passes through and over metal shavings toward the engine.

Abstract: In accordance with one implementation, a carburetor includes a body having a fluid passage formed therein and a counterbore located along the fluid passage. The counterbore has a first sealing surface and a central axis, and the body further includes a second sealing surface located radially closer to the central axis than is the first sealing surface. The carburetor also includes a plug affixed to the body at the counterbore and in contact with both of the first and second sealing surfaces. Engagement of the plug with the two sealing surfaces may improve the connection between the plug and carburetor body. In at least some implementations, the plug may be held in place without aid of an adhesive or other secondary connector or connection aid.

Abstract: A gas powered walk behind mower is configured to be stored in a vertical position or orientation without leaking contained engine fluids.

Abstract: The single body passage (single barrel) carburetor main body design for air demand. The carburetor main body design includes a single throttle plate, a main body assembly, boosters associated with a main fuel delivery circuit, idle fuel delivery passages, transfer circuit delivery passages, air venting passages, bowl venting passages and accelerator pump passages. The idle circuit ports open downstream of the throttle plate. Transfer circuit discharge ports are positioned across the throttle plate. The combination of the idle, transfer and main fuel circuits ensures the smooth delivery of fuel throughout all operating conditions of the engine. The modular metering design incorporated with the multiple outlet booster design allows improved control of the delivery of fuel in the single body passage (single barrel) and increased air flow capability.

Abstract: The present invention discloses a readjustment-preventing carburetor and a method for preventing the carburetor from being readjusted. Said carburetor comprises an idle adjusting screw, an idle port and a screw hole communicating with the idle port, wherein said idle adjusting screw is consolidated with said screw hole as a whole after being adjusted to a certain position, so as to prevent the idle adjusting screw of the carburetor from being readjusted. The consolidation of the present invention can be bonding or welding, thereby fundamentally preventing the user from readjusting the idle adjusting screw of the carburetor and ensuring the discharge of the gasoline engine always in conformity with the requirements of environmental protection. The carburetor and the method of the present invention have the characteristics of simple process and structure, safety use and reliability.

Abstract: A gas-liquid separation device is used in a fuel cell system including fuel cells. The gas-liquid separation device includes: a separator configured to separate a fuel gas after an electrochemical reaction performed in the fuel cells from liquid water flowing with the fuel gas; and a reservoir configured to allow accumulation of the liquid water discharged from the fuel cells. The gas-liquid separation device also has a fluid outflow path arranged to connect with a connection object member and have a fluid outlet formed to be open in a vertical direction. The fluid outflow path is configured to flow out a fluid from inside of the gas-liquid separation device to the connection object member via the fluid outlet. The fluid outlet is provided to differ in position in a direction perpendicular to a vertical direction from the separator and the reservoir.

Abstract: According to one implementation, carburetor includes an intake bore, a throttle valve, a main fuel nozzle, an accelerator device and a fuel passage. The throttle valve is movable between an idle and wide open positions and includes a shaft rotatably supported around an axial line extending across the intake bore. The accelerator device may be operable to increase an amount of fuel that flows through the main fuel nozzle when the throttle valve is moved toward its wide open position, and may include a fuel reservoir constructed and arranged to store fuel. The fuel passage communicates with the main fuel nozzle and the fuel reservoir is provided upstream of the main fuel nozzle such that fuel flows through the fuel reservoir before being delivered to the main fuel nozzle.

Abstract: An evaporative emissions control system for small internal combustion engines includes a control valve associated with a fuel line and with a vent line which each connect the fuel tank to the carburetor. When the engine is not running, the control valve automatically closes the vent line and the fuel line, thereby trapping fuel vapors within the fuel tank and vent line and preventing the supply of liquid fuel to the carburetor. Upon engine start up, actuation of a bail assembly or vacuum produced within the carburetor causes the control valve to open the vent line and the fuel line, venting fuel vapors from the fuel tank through the fuel line to the carburetor for consumption by the engine, and opening the supply of liquid fuel from the fuel tank to the carburetor.

Abstract: A fuel expansion system or carburetor for internal combustion engines utilizing the bubbling of air through use of a number of bubble tubes through a supply of liquid fuel. The resulting atomized, vaporized and expanded fuel is then mixed with air and fed into the engine for combustion.