摘要:
A system of mechanical components that operate cooperatively to control evaporation of fuel or hydrocarbon leakage from engines is disclosed. In at least some embodiments, the system of mechanical components comprises a first valve assembly and a second valve assembly. The first valve assembly, which functions as a fuel-shut off valve assembly, governs whether fuel can proceed from a fuel bowl into a carburetor, and when closed, prevents fuel vapors from developing within the carburetor. The second valve assembly, which functions as a “vapor venting control valve assembly,” has an input port that is coupled by way of a fuel tank vapor hose to both a fuel tank and to the fuel bowl. When in a closed state, the second valve assembly controls the fuel vapors, which are provided to its input port from the fuel tank and the fuel bowl, from being communicated to an output port of the second valve assembly.
摘要:
A device for overcoming the problem of restarting an internal engine while it is still hot, in which means are provided for blowing air into the air filter of the engine each time it is restarted in order to purge the filter of non-combustible gases trapped inside the filter which prevent the engine from starting immediately.
摘要:
The disclosure embraces a fuel system and charge forming apparatus of the float bowl type including a heat exchanger or heat transfer means associated with the charge forming apparatus providing a fuel circulating system or circuit for conveying heat away from the fuel in the charge forming apparatus to maintain the fuel below temperatures at which the fuel readily vaporizes to prevent or minimize "vapor lock" in the fuel bowl and fuel channels of the charge forming apparatus.
摘要:
A recoil starter for an internal combustion engine has a housing with a pulley carried at least in part for rotation therein. The pulley is arranged in operable communication with a crankshaft of the engine. A pull cord is wound about the pulley with one end of the cord being arranged to be pulled by a user to rotate the pulley. An actuator is carried for rotation in response to rotation of the pulley. A pump is arranged for actuation in response to rotation of the actuator to provide fresh liquid fuel to a carburetor and remove fuel vapor and stale fuel from the carburetor and deliver it to a fuel tank prior to starting the engine.
摘要:
A water cooled fuel reservoir is provided for a carbureted engine. Water is drawn by a pump from a body of water and caused to flow to a water jacket surrounding a fuel reservoir of the carburetor. The fuel reservoir, or float bowl, stores a quantity of liquid fuel which is cooled by thermal contact with the water in a water jacket of the water reservoir.
摘要:
A fuel supply device for an internal combustion engine comprises a constant level chamber (typically a float chamber) formed in a casing which may be the body of the carburetor of the device. A heat exchanger is formed in the casing or in contact with the casing. A cooling liquid is circulated in a closed-loop circuit including the heat exchanger and a liquid reservoir having a large volume as compared with that of the balance of the circuit.
摘要:
Disclosed herein is an improvement in a variable venturi carburetor for an internal combustion engine which comprises a venturi portion, a float chamber, a main fuel passage communicating with the venturi portion and with the float chamber, a main fuel jet provided in the main fuel passage and a movable metering needle. A free end of the metering needle is adapted to control the size of the main fuel jet and the base portion of the metering needle is mounted to a suction piston adapted to transversely move with respect to the venturi portion in response to the condition of load on the internal combustion engine. The improvement includes provision of a bypass detouring upwardly from a portion of the main fuel passage upstream of the main fuel jet for discharging vapor of fuel, and the bypass communicates with a negative pressure passage which has an opening in the lower portion of the venturi portion and with an air passage which has an opening in the vicinity of an air horn inlet.