Abstract: An outboard motor has an engine, a cowling for accommodating the engine, and an air duct for introducing ambient air into the cowling 11. An air filter is provided in the air duct. One or more sensors detect when the air filter is clogged. When air filter clogging is detected, a warning signal is triggered.

Abstract: An outboard motor can have a case supported by a hull, an internal combustion engine supported on the upper end of the case, an oil pan formed in the case for storing lubricating oil for the internal combustion engine, and a cooling water jacket formed integrally with the oil pan. A cooling water passage for communicating the cooling water jacket with the internal combustion engine is provided. The cooling water jacket can be formed on the bottom of the oil pan. Optionally, a space can be formed between at least a part of the outer wall of the oil pan and the cooling water passage.

Abstract: An outboard motor has an engine, a cowling for accommodating the engine, and an air duct for introducing ambient air into the cowling 11. An air filter is provided in the air duct. One or more sensors detect when the air filter is clogged. When air filter clogging is detected, a warning signal is triggered.

Abstract: An outboard motor comprises a cowling, having a top cowling and a bottom cowling, that cooperate to define an engine compartment. An intake air duct draws outside air into the engine compartment. A water collecting part is arranged in the bottom cowling for accumulating water that may enter the cowling through the air duct. A water passage may also be provided for guiding water from the intake air duct to the water collecting part. The water passage may have air openings for allowing air to enter the engine compartment independent of the water. A floor of the engine compartment may be adapted to contain water splashing and direct water to a water collecting part.

Abstract: An outboard motor has a cowling for enclosing an engine. Air inlet openings are formed in the cowling. An air intake chamber connects the air inlet openings and an air intake duct. Air that flows through the air inlet openings passes through the air intake chamber to the air intake duct. The air is then introduced into the engine. A front wall of the air intake chamber has a center portion positioned rearwardly of outer portions of the front wall. The air intake duct is positioned rearwardly of the front wall of the air intake chamber. The air inlet openings are positioned on both sides of the air intake duct. A rear wall is positioned rearwardly of the air intake duct. Each of the air inlet openings extends from the rear wall to one of the outer ends of the front wall of the air intake chamber.

Abstract: A boat includes an outboard motor having an internal combustion engine enclosed within a cowling. The cowling has a rear inlet port for allowing outside air to be drawn into the cowling. A closure member selectively closes the inlet port depending upon a certain engine operating parameters. In another embodiment, the cowling also includes a front air inlet port, and a front closure device for selectively opening and closing the front inlet port.

Abstract: An outboard motor can have a case supported by a hull, an internal combustion engine supported on the upper end of the case, an oil pan formed in the case for storing lubricating oil for the internal combustion engine, and a cooling water jacket formed integrally with the oil pan. A cooling water passage for communicating the cooling water jacket with the internal combustion engine is provided. The cooling water jacket can be formed on the bottom of the oil pan. Optionally, a space can be formed between at least a part of the outer wall of the oil pan and the cooling water passage.

Abstract: An outboard motor comprises a cowling, having a top cowling and a bottom cowling, that cooperate to define an engine compartment. An intake air duct draws outside air into the engine compartment. A water collecting part is arranged in the bottom cowling for accumulating water that may enter the cowling through the air duct. A water passage may also be provided for guiding water from the intake air duct to the water collecting part. The water passage may have air openings for allowing air to enter the engine compartment independent of the water. A floor of the engine compartment may be adapted to contain water splashing and direct water to a water collecting part.

Abstract: An outboard motor has a cowling for enclosing an engine. Air inlet openings are formed in the cowling. An air intake chamber connects the air inlet openings and an air intake duct. Air that flows through the air inlet openings passes through the air intake chamber to the air intake duct. The air is then introduced into the engine. A front wall of the air intake chamber has a center portion positioned rearwardly of outer portions of the front wall. The air intake duct is positioned rearwardly of the front wall of the air intake chamber. The air inlet openings are positioned on both sides of the air intake duct. A rear wall is positioned rearwardly of the air intake duct. Each of the air inlet openings extends from the rear wall to one of the outer ends of the front wall of the air intake chamber.

Abstract: A boat includes an outboard motor having an internal combustion engine enclosed within a cowling. The cowling has a rear inlet port for allowing outside air to be drawn into the cowling. A closure member selectively closes the inlet port depending upon a certain engine operating parameters. In another embodiment, the cowling also includes a front air inlet port, and a front closure device for selectively opening and closing the front inlet port.

Abstract: An outboard motor includes a housing unit adapted to be mounted on an associated watercraft. An engine is mounted on the housing unit. The housing unit defines a water delivery passage and a water discharge passage. Both the passages communicate with each other through a lower opening. The water delivery passage is arranged to deliver cooling water to the engine. The water discharge passage is arranged to discharge the cooling water from the engine. The discharge passage communicates with a location out of the housing unit through an upper opening. A pressure relief valve unit extends through the lower and upper openings. The pressure relief valve unit allows the cooling water in the delivery passage to move to the discharge passage when a pressure of the delivery passage becomes greater than a preset pressure.

Abstract: An electronic part in which an external terminal made of a metallic plate provided with at least one slit is on an electronic part element via a conductive joint member.

Abstract: A capacitor including a ceramic body, a glass layer formed on each of opposite surfaces of the ceramic body, and a first metallic layer formed on the glass layer. Preferably, a lead terminal is connected to the first metallic layer or to a second metallic layer which is provided on the first metallic layer, by use of solder containing Pb in an amount of 2.5 wt. % or less. Preferably, a lead terminal which is plated with a substance containing Pb in an amount of 5 wt. % or less is soldered onto the first metallic layer or the second metallic layer.

Abstract: An outboard motor includes a housing unit adapted to be mounted on an associated watercraft. An engine is mounted on the housing unit. The housing unit defines a water delivery passage and a water discharge passage. Both the passages communicate with each other through a lower opening. The water delivery passage is arranged to deliver cooling water to the engine. The water discharge passage is arranged to discharge the cooling water from the engine. The discharge passage communicates with a location out of the housing unit through an upper opening. A pressure relief valve unit extends through the lower and upper openings. The pressure relief valve unit allows the cooling water in the delivery passage to move to the discharge passage when a pressure of the delivery passage becomes greater than a preset pressure.

Abstract: A ceramic electronic component includes electrodes each having a four layer structure including a first electrode layer made of an Ni—Ti alloy and constructed so as to adhere closely to the surface of a ceramic material defining a ceramic element, a second electrode layer made of at least one selected from the group consisting of Cu, Ag, and Au, disposed on the first electrode layer, a third electrode layer made of an Ni—Ti alloy, disposed on the second electrode layer, and a fourth electrode layer made of at least one selected from the group consisting of Cu, Ag, and Au, disposed on the third electrode layer. Lead terminals are bonded to the electrodes having the four layer structures via solder members, respectively.

Abstract: A ceramic electronic part includes a terminal electrode which less causes deterioration in electric characteristics due to diffusion of Sn contained in solder. In a monolithic ceramic electronic part of the present invention, terminal electrodes are formed on the outer surface of a ceramic sintered compact as a ceramic element assembly, and first electrode layers of the terminal electrodes, which closely adhere to the surface of the ceramic sintered compact, contain a main component metal, which constitutes the terminal electrodes, and a metal having higher affinity for oxygen than Sn.

Abstract: A ceramic electronic component includes electrodes each having a four layer structure including a first electrode layer made of an Ni—Ti alloy and constructed so as to adhere closely to the surface of a ceramic material defining a ceramic element, a second electrode layer made of at least one selected from the group consisting of Cu, Ag, and Au, disposed on the first electrode layer, a third electrode layer made of an Ni—Ti alloy, disposed on the second electrode layer, and a fourth electrode layer made of at least one selected from the group consisting of Cu, Ag, and Au, disposed on the third electrode layer. Lead terminals are bonded to the electrodes having the four layer structures via solder members, respectively.

Abstract: A ceramic capacitor having an improved electrode soldering performance, little or no diffusion of solder even in the case of being used under a high temperature environment and a reduced characteristic deterioration is provided. The dry plating electrodes have a three-layer structure. First layers of the electrodes are respectively provided on both surfaces of a ceramic element assembly and made of any one or more of Cu, Ni-Cu alloy and Zn. Second layers of the electrodes are respectively provided on the surfaces of the first layers and made of a material different from the material of the first layers and any one or more of Cr, Ni-Cr alloy, Fe-Cr alloy, Co-Cr alloy, Ti, Zn, Al, W, V and Mo. Third layers of the electrodes are respectively provided on the surfaces of the second layers and made of any one or more of Cu, Ni-Cu alloy, Ag and Au.

Abstract: A capacitor including a ceramic body, a glass layer formed on each of opposite surfaces of the ceramic body, and a first metallic layer formed on the glass layer. Preferably, a lead terminal is connected to the first metallic layer or to a second metallic layer which is provided on the first metallic layer, by use of solder containing Pb in an amount of 2.5 wt. % or less. Preferably, a lead terminal which is plated with a substance containing Pb in an amount of 5 wt. % or less is soldered onto the first metallic layer or the second metallic layer.

Abstract: A ceramic capacitor having an improved electrode soldering performance, little or no diffusion of solder even in the case of being used under a high temperature environment and a reduced characteristic deterioration is provided. The dry plating electrodes have a three-layer structure. First layers of the electrodes are respectively provided on both surfaces of a ceramic element assembly and made of any one or more of Cu, Ni--Cu alloy and Zn. Second layers of the electrodes are respectively provided on the surfaces of the first layers and made of a material different from the material of the first layers and any one or more of Cr, Ni--Cr alloy, Fe--Cr alloy, Co--Cr alloy, Ti, Zn, Al, W, V and Mo. Third layers of the electrodes are respectively provided on the surfaces of the second layers and made of any one or more of Cu, Ni--Cu alloy, Ag and Au.