摘要:
An outboard motor has an internal combustion engine with a carburetor. The carburetor is designed to extend maintenance interval greatly by preventing or suppressing the deposition of solid matters in the gap between the intake passage and a butterfly-type throttle valve therein. The throttle valve is divided, by a valve axis about which the throttle valve turns, into a first valve part that turns from the downstream side to the upstream side with respect to an air intake direction when the fully closed throttle valve is opened and a second valve part that turns from the upstream side to the downstream side with respect to the air intake direction when the fully closed throttle valve is opened. The first valve part has an edge that moves to the upstream side past bypass ports when the fully closed throttle valve is opened, and the second valve part is provided with a through hole that allows air to flow therethrough at a flow rate necessary for idling when the throttle valve is fully closed.
摘要:
An outboard motor has an internal combustion engine with a carburetor. The carburetor is designed to extend maintenance interval greatly by preventing or suppressing the deposition of solid matters in the gap between the intake passage and a butterfly-type throttle valve therein. The throttle valve is divided, by a valve axis about which the throttle valve turns, into a first valve part that turns from the downstream side to the upstream side with respect to an air intake direction when the fully closed throttle valve is opened and a second valve part that turns from the upstream side to the downstream side with respect to the air intake direction when the fully closed throttle valve is opened. The first valve part has an edge that moves to the upstream side past bypass ports when the fully closed throttle valve is opened, and the second valve part is provided with a through hole that allows air to flow therethrough at a flow rate necessary for idling when the throttle valve is fully closed.
摘要:
An engine intake manifold is provided that can prevent fuel loss by promptly supplying to an engine the fuel that has collected on the base within an intake air distribution box. The engine intake manifold includes an intake air distribution box having an intake inlet, and a plurality of intake branch pipes made of a synthetic resin that are provided in a vertical arrangement connected to a side wall of the intake air distribution box with downstream ends connected to a plurality of corresponding intake ports of the engine. A funnel is formed at the upstream end of each of the intake branch pipes disposed within the intake air distribution box. A fuel collector recess is formed on the base of the intake air distribution box. A fuel draw-up hole communicating with the recess, is provided in a side wall of the lowest funnel.
摘要:
An intake system in a V-type 4-stroke engine for an outboard engine system is provided. A crankshaft of the engine is disposed vertically, and heads of left and right banks are disposed to face rearwards. The engine is covered with an engine hood. In the intake system, an intake air inlet is provided in an upper portion of a longitudinally flat intake air dispensing box disposed between the left and right banks and a rear wall of the engine hood, and leads to an intake passageway in a throttle body. The inside of the intake air dispensing box is divided by a partition wall into first and second dispensing chambers communicating with the intake air inlet and extending longitudinally. An on-off valve is mounted on the partition wall and is capable of bringing the first and second dispensing chambers into and out of communication with each other. Intake ports are provided in the left and right banks to communicate with the first and second dispensing chambers, respectively. Thus, it is possible to provide an intake system for a V-type 4-stroke engine in an outboard engine system, in which the air-charging characteristic can be changed in accordance with the operation state of the engine, while avoiding an increase in size of the engine hood.
摘要:
An outboard motor is provided which includes, in an engine compartment defined by an engine hood, an engine, an intake manifold including a plurality of intake branch pipes connected to a plurality of intake ports of the engine, and a throttle body connected to an intake inlet of the intake manifold. A negative pressure detection hole that opens within the intake manifold, is provided in the outer wall of the intake manifold, and a negative intake pressure sensor that is fixed to the outer wall is positioned in the negative pressure detection hole.
摘要:
In an intake manifold of an internal combustion chamber comprising a surge tank assembly and intake pipe assembly, a seal member is interposed between the end surface of the intake pipe assembly and the mating surface of the surge tank assembly so as to seal off the intake passage and mounting holes individually. Thus, the seal member, combined with the use of the blind threaded holes for the threaded bolts joining the two parts, ensures the sealing of both the intake passages and mounting holes at the interface between the end surface of the intake pipe and the mating surface of the surge tank assembly in a both reliable and simple manner. Preferably, the seal member comprises an O-ring made of elastomeric material, and at least one of the mating surface and end surface is provided with a groove for receiving the seal member.
摘要:
To propose a health food or a drug, which comprises an iodine compound as a substitute for organic iodine and can exert a similar effect as organic iodine. To propose a method for producing a liquid to be used as a starting material for the aforesaid health food or drug. A health food and a drug each containing hydrogen iodide as the active ingredient. A method for producing a hydrogen iodide-containing solution, which comprises: an alkaline ion water preparation step for preparing alkaline ion water containing hydrogen peroxide; a sodium hydroxide production step for adding sodium to the alkaline ion water and thus producing sodium hydroxide; and a hydrogen iodide production step for, after the sodium hydroxide production step, adding iodine to the alkaline ion water and thus producing hydrogen iodide.
摘要:
In a light emitting array module comprising light emitting elements arranged in an array fashion, the light emitting elements can be used selectively by monitoring drive states of the light emitting elements if necessary. A plurality of light emitting elements arranged in parallel are coupled to an optical fiber array via an optical switch which can switch optical paths of emitted light. Besides, the optical switch is provided with a light receiving element coupled to a remaining output port thereof in addition to the optical fibers. Optical paths of lights emitted from the light emitting elements are switched by the optical switch, and an optical signal is converted into an electric signal by the light receiving element to monitor light emitting states of the light emitting element. Drive state of the corresponding light emitting element is controlled by the electric signals. The deterioration of the light emitting element is checked to detect whether the light emitting element is usable or not, and, if it is unusable, the light emitting element is switched by a spare light emitting element.
摘要:
An array of optical semiconductor devices, an array of lenses and an array of optical fibers are serially arranged in light propagation direction to provide a light axis alignment. At light input ends of the optical fibers, a light shielding plate is positioned. The light shielding plate is provided with light apertures corresponding to light input facets of the optical fibers to decrease leakage light interference between adjacent optical fibers.
摘要:
A diversity control circuit which selects an optimum receiving signal in a diversity receiver and which corrects receiving signal levels in such a manner that characteristics in measuring systems for a plurality of receiving signal levels can be regarded as homogeneous. The circuit includes memory means which stores correction data and which responds to receiving signal levels to provide corrected signals conforming to a preselected characteristic.