128results about "Multi-stage carburettors" patented technology

A vaporizer delivery system for use in semiconductor manufacturing processes including a plurality of vertically stacked containers for holding a vaporizable source material. Each of the vertically stacked containers includes a plurality of vented protuberances extending into the interior of the each stacked container thereby providing channels for passage of a carrier gas between adjacent vertically stacked containers.

An evaporative cooling system that can be used to cool fluid and to cool an air supply to a building. The air supply to a cooling tower in a first evaporative system also having a fluid pump and a heat exchange element is cooled by the heat exchange element of a second evaporative cooling system. As a result, the inlet air wet bulb temperature of the primary cooling tower will be reduced, enhancing the cooling capacity of the primary cooling tower.

A method and an apparatus for starting a gas turbine engine under various conditions are used to distribute a varying total amount of electric power to at least one of a starter, a fuel heater and an oil heater while providing fuel.

An evaporative emissions control system for small internal combustion engines. The system generally includes a charcoal canister and a carburetor with a fuel circuit shutoff valve. The charcoal canister is in fluid communication with the air space above the liquid fuel within the engine fuel tank, and optionally, with the air space above the liquid fuel within the fuel bowl of a fuel bowl-type carburetor. The charcoal canister contains charcoal media which absorbs fuel vapors when the engine is not running. During running of the engine, vacuum within the carburetor induces a flow of atmospheric air through the charcoal canister to purge the collected fuel vapors from the charcoal media, and the fuel vapors pass into the engine for consumption. The carburetor of the engine, which may be either a fuel bowl-type carburetor or a diaphragm carburetor, includes a fuel circuit shutoff valve controlled either by a vacuum signal produced within the engine or by a user-actuated mechanical linkage. The fuel circuit shutoff valve closes the fuel circuit of the carburetor upon engine shutdown to prevent escape of fuel vapors from the carburetor to the atmosphere. In another embodiment, a weir-type carburetor is disclosed which contains a minimal amount of fuel when the engine is not running to reduce or eliminate evaporative emissions.

A carburetor assembly includes a base plate (12) having an air bypass passage (30) extending there through, with air channels (71-74) formed in the surface of the base plate intersecting the air bypass passage and each of the butterfly bores (25-28) of the base plate. An adjustable air bypass valve (31) is mounted on the base plate and controls the movement of air through the bypass passage. A valve needle (50) is adjustably mounted to the valve body (48) for adjustably constricting the flow of fluid through the radially extending air inlet ports (60) and through the base plate air bypass passage, to allow for the adjustment of the volume of the air delivered to the engine at idle speed, independently of the movements of the butterfly valves.

A contact tray is provided with a tray deck and dividing walls which form groupings of one or more cans and one or more downcomer inlets distributed across the tray deck. The cans have walls that surround vapor openings in the tray deck that permit upward passage of a vapor stream into the cans. Downcomers extend downwardly from the downcomer inlet and are positioned for delivering a liquid stream into the center of cans positioned on a tray deck of an underlying contact tray. Discharge openings are provided in the walls of the cans to allow the liquid stream to exit the cans. The dividing walls direct the exiting liquid stream into the downcomer inlets in the same grouping and prevent or impede the liquid stream from flowing to a low side of the tray deck.

A cooling tower and / or a fan drive system are provided which enhance cooling performance, are able to reduce lateral temperature gradients at least to some degree, provide for easy removable of debris and / or provide for easy fan adjustment.

A power output apparatus capable of generating power from at least an electric motor to a drive shaft includes a pattern storing unit that stores a plurality of output characteristic patterns in which power is generated to the drive shaft, a pattern selecting unit that selects one of the output characteristic patterns stored, and a drive controller that controls driving of the electric motor so that power that is within a range of the selected output characteristic pattern is generated to the drive shaft. The power output apparatus may also be controlled to operate the motor in a dash mode that allow motor output to exceed rated values for short periods of time to increase drivability.

A carburetor for an internal combustion engine has an intake pipe having a throttle valve plate therein. An annular venturi tube is disposed upstream or downstream of the throttle valve plate inside the intake pipe. The annular venturi tube is located at a predetermined interval with the throttle valve plate. The annular venturi tube has a fine continuous annular slit or four or more annularly arranged fuel discharging pores so as to atomize the fuel thereat. Atomization is always carried out near a position where a fastest air moves so as to improve the atomization and a uniform air-fuel mixture, thereby improving an output, fuel consumption and exhaust gas emission of the internal combustion engine.