摘要:
An exhaust manifold for an outboard motor that has a vertically extending crankshaft and which exhaust manifold is formed in the cylinder head and cylinder block. The cylinder block forms the exhaust manifold by runner sections that are configured in such a way so as to facilitate the casting process by which they are formed and which provide an effective smooth flow path without requiring complex cores or patterns.
摘要:
A drive arrangement for an engine of an outboard motor including a cowling and a water propulsion device is disclosed. The engine is positioned in the cowling and has a body having a top end and a bottom end and defining at least one combustion chamber. The engine has a generally vertically extending crankshaft having a bottom end in driving relation with the water propulsion device and a top end extending above the top end of the body of the engine, the engine including an intake system including an intake passage through which air is provided to each combustion chamber, at least one intake valve for controlling the flow through the intake passage, and an intake camshaft for actuating the intake valve(s). The engine also includes an exhaust system including an exhaust passage leading from each combustion chamber, at least one exhaust valve for controlling the flow of exhaust through the exhaust passage, and an exhaust camshaft for actuating the exhaust valve(s). The drive arrangement includes a flywheel positioned on the crankshaft adjacent the top end of the engine and a camshaft drive pulley positioned on the crankshaft above the flywheel, the camshaft drive pulley driving a first flexible transmitter which drives a driven pulley connected to at least one of the camshafts, the crankshaft further arranged to drive a second flexible transmitter which drives a pulley associated with an engine accessory such as an alternator.
摘要:
A display apparatus includes a display unit for displaying images, a backlight unit disposed behind the display unit for illuminating the display unit, an inverter unit for electrically controlling the backlight unit, a controller unit for controlling the inverter unit and the display unit, and a power supply unit having an exothermic heat distribution for supplying electricity to the inverter unit and the controller unit. The inverter unit and controller unit are disposed behind the backlight unit and the power supply unit is disposed on a side of the display unit, backlight unit, inverter unit and controller unit. The display unit, backlight unit, inverter unit, controller unit and power supply unit are disposed in a common housing. The inverter unit and the controller unit are arranged behind the backlight unit. An insulating member is further disposed between the power supply unit and the display unit at a position corresponding to a region of relatively large exothermic heat of the power supply unit, and the insulating member is disposed at a diagonal position with respect to the inverter unit. The display apparatus may be supported by a support structure including vertically tilting and laterally turning mechanisms.
摘要:
An induction system for an outboard motor of the type having a water propulsion device powered by an internal combustion engine positioned within an engine compartment defined by a cowling, is disclosed. The induction system includes a cover extending over a top end of the engine. The cover defines an air duct leading from an intake chamber defined by the cowling to an intake pipe of the air intake system of the engine. The cover also defines an air duct in communication with the engine compartment and leading to an exhaust chamber defined by the cowling. A pair of intake ports lead through a cover of the cowling from the intake chamber, and an exhaust port leads through the cover from the exhaust chamber. The intake ports are positioned forward of the exhaust port when considering the forward movement of a watercraft which is powered by the motor.
摘要:
A fuel injection system for an internal combustion engine of the type utilized to power an outboard motor of a watercraft is disclosed. The engine is oriented with its crankshaft vertically extending, such that the engine has a top and a bottom, a first end and a second end, and a side between the ends. An air delivery passage extends generally from the first end along said side to an intake passage leading through the engine to a combustion chamber therein. A fuel injector is positioned along the side of the engine and arranged to deliver fuel into air flowing through the passage. In one arrangement, the fuel injector is connected to an intake manifold defining at least a part of the air delivery passage and is adapted to deliver fuel opposite the flow of air through the passage at the point of delivery. In a second embodiment, the fuel injector is positioned between the air delivery passage and the side of the engine. In this embodiment, the fuel injector is preferably arranged to deliver fuel perpendicular to the flow of air through the passage.
摘要:
An impact-resistant display apparatus is constituted by a display panel, a drive circuit for driving the display panel, a face plate disposed in front of the display panel, and a support member for supporting the display panel and the drive circuit. The display apparatus further includes a first elastic member between a rear side of the display panel and the support member, and a second elastic member between a front side of the display panel and the face plate. The first and second elastic members may preferably respectively define and almost closed space together with adjacent associate members so as to provide an air damper-effect.
摘要:
A number of embodiments of outboard motors having power head and drive configurations that permit the engine to be mounted so that its crankshaft is offset from the drive shaft so as to facilitate larger turning angles without interference.
摘要:
A number of embodiments of four-cycle V-type outboard motors embodying an improved and simplified oil filter arrangement wherein the oil filter is easily accessible for servicing is located in close proximity to the oil tank for facilitating pressure relief and is disposed so as to facilitate communication with the main oil gallery of the engine.
摘要:
An electric circuit substrate having a multilayer structure is constituted from at least three wiring layers including an outermost wiring layer, at least one first inner wiring layer disposed under the outermost wiring layer, and a second inner wiring layer disposed under the at least one first inner wiring layer, each provided with a prescribed conductor pattern, respectively. In the multilayer structure, the outermost wiring layer has an alignment mark, the above-mentioned at least one first inner wiring layer has a blank portion free from its conductor pattern in a position immediately under the alignment mark, and the second inner wiring layer has an entire solid portion of its conductor pattern in a position immediately under the blank portion. The above multilayer structure including the alignment mark is effective in preventing recognition error or recognition failure of the alignment mark, thus allowing accurate positioning of the electric circuit substrate.
摘要:
A high-performance outboard motor embodying a V-type four overhead camshaft four-cycle internal combustion engine. A compact cam driving arrangement is provided for driving the camshafts from the crankshaft of the engine at the upper end. A flywheel is mounted to the lower end of the crankshaft and is driven by a starter motor for starting of the engine. Another engine accessory is driven off the upper end of the crankshaft so as to maintain a compact and yet highly serviceable arrangement.