Class 440/88A - Air intake for engine

Subclass of Class 440 - Marine propulsion
No. of patents: 130
Last issue date: 03/13/2012

Number	Title	Issue Date
8133086	Boat propelling apparatus and boat A boat propelling apparatus is compact and capable of making an adjustment on its engine output characteristic. The boat propelling apparatus includes an engine, a surge tank and an intake manifold. The intake manifold includes therein an internal space for air to f...	03/13/2012
7806741	Marine propulsion system with separate air intake and cooling systems An outboard motor is provided with two distinct and separate streams of air flowing through its cowl structure. One stream of air is intended to cool various heat emitting components under the cowl and the other stream of air is intended to provide required air for ...	10/05/2010
7731553	Watercraft propelled by a water jet A watercraft propelled by a water jet includes an sealed hull portion including an upper deck and a bottom surface, an engine compartment located behind the sealed hull portion and containing a propulsion and steering system including an engine, a bladed impeller dr...	06/08/2010
7654876	Aftermarket supercharger for personal watercraft A personal watercraft is disclosed as including an engine and a forced air induction system including an aftermarket supercharger. The aftermarket supercharger replaces the personal watercraft's original-equipment supercharger and increases the charge of compressed ...	02/02/2010
7572159	Internal combustion engine installed in engine compartment An outboard motor has an internal combustion engine installed in an engine compartment defined by an engine cover. The engine's intake air inlet is formed by an air intake duct, which communicates with an air intake space outside the engine compartment. The engine c...	08/11/2009
7524224	Internal combustion engine and outboard motor provided with the same An internal combustion engine installed in an engine compartment 15 covered with an engine cover C is provided with an intake air passage P. The intake air passage P extends continuously from an intake air inlet Pi to intake air outlets Pe in the engine compa...	04/28/2009
7458869	Personal watercraft A personal watercraft having an air-water separating structure to communicate the outside of a body of the watercraft with an interior of an engine room, which allows the layout of the interior of an engine room to be designed flexibly, including a body 1 inc...	12/02/2008
7452256	Machine provided with internal combustion engine and generator An outboard motor S includes an internal combustion engine E having a crankshaft 7, and an alternator G having a shaft 81 and a housing 82. The engine E and the generator G are disposed in an engine compartment 15 with the crankshaft 7...	11/18/2008
7438614	Cooling system for outboard motor A boat has an outboard motor mounted to a hull and a remotely mounted cooling air system. The outboard motor has a cowling housing an engine. The cooling air system receives air from within the hull and includes a ventilating fan box. The ventilating fan box may be ...	10/21/2008
7425163	Outboard motor An outboard motor includes a cowling enclosing an engine, an ambient air intake defined by the cowling, and an intake passage introducing ambient air taken through the ambient air intake to the engine. The intake passage extends out of and above a top section of the...	09/16/2008
7404293	Intake system for supercharged engine An intake system for a supercharged engine can include a blow-off passage provides communication between the upstream side of the throttle valve and the upstream side of a supercharger. A blow-off valve opens and closes the blow-off passage. The blow-off valve can b...	07/29/2008
7401598	Outboard motor with forward air intake and air-cooled fuel pump An outboard motor can comprise a cowling for covering an engine, a high pressure fuel supply system, and a low pressure fuel supply system. The high pressure fuel supply system can have a vapor separator tank and a high pressure fuel pump. The low pressure fuel supp...	07/22/2008
7395795	Outboard motor An outboard motor is mounted on a hull and has an engine disposed in an upright position in a cowling so that a crankshaft thereof extends generally vertically during cruising. An embodiment of the motor includes a first surge tank disposed on the opposite side of a...	07/08/2008
7367856	Personal watercraft A personal watercraft with a supercharging device and an intercooler is disclosed. The personal watercraft may include an engine, a water jet pump, a propeller shaft to transmit an output power of the engine to the water jet pump, and a bearing case configured to su...	05/06/2008
7353812	Vehicle engine with integral vacuum generator An integral vacuum generator system for an internal combustion engine includes a throttle body and intake manifold defining a bypass passage which is connected with a vacuum manifold by both a venturi and a direct vacuum supply passage. Vacuum flow through the ventu...	04/08/2008
7352073	Ocean wave energy converter having an improved generator and ballast control The ocean wave energy converter uniquely includes a generator with a rotating inner rotor surrounded by a counter-rotating outer rotor for generating electricity. A reciprocating drive rod drives the inner rotor on the downstroke of the drive rod and the outer rotor...	04/01/2008
7344424	Water-jet propulsion personal watercraft A water-jet propulsion personal watercraft is disclosed, including a multiple-cylinder engine mounted in a body of the watercraft and configured to drive a water jet pump configured to propel the watercraft, and a mechanically driven supercharger configured to suppl...	03/18/2008
7343906	Water jet propulsion boat A watercraft can include an engine having a crankshaft with its output end extending rearward of a crankcase and a supercharger for compressing air feeding it to the engine. The supercharger can be located forward of a rear end of the crankcase. An exhaust pipe, des...	03/18/2008
7334799	Sealing device for a turbocharger A sealing device has a seal ring and a cylindrical bellows portion connected to the seal ring. The cylindrical bellows portion has a corrugated outer surface. A turbocharger utilizing the sealing device has a turbine wheel connected to a shaft and a compressor wheel...	02/26/2008
7314038	Idle air control device in multiple throttle body To provide a plural openings control type idle air control device with a low cost by adding a few parts for controlling plural bypass air passages to a single openings control type idle air control device for opening and closing a single bypass air passage, a valve ...	01/01/2008
7306498	Outboard motor having air suction device An outboard motor having an air suction device comprising a main part having an engine, a top cover mounted on a top portion of the main part, the top cover being composed of a main cover having an air space surrounding an outer surface of the engine and of an auxil...	12/11/2007
7299783	Auxiliary control of airflow through an engine enclosure of an outboard motor A marine propulsion device is provided with an air control system that draws air from the region under the cowl of the outboard motor and induces a flow of air out of the region. The air is caused to flow through a second opening formed in the cowl. As a result, air...	11/27/2007
7267591	Outboard motor An outboard motor includes an engine having an air intake device. The cowling has an engine room in which the engine is disposed. One or more air intake openings are formed through the cowling. A water separation device is included in the cowling interposed between ...	09/11/2007
7263969	Idle air control apparatus in multiple throttle body To make easier designing of an idle control apparatus for a multiple throttle body inexpensively, first and second air control holes (5, 6) are open to an upper side wall (2a) of a valve body slidable hole (2) of a control apparatus main ...	09/04/2007
7255617	Personal watercraft incorporating capsize-recovery facilitating structure, and method of using same A personal watercraft can be rotated in a correct direction of rotation when the personal watercraft has been overturned, and can thereby be restored to a normal, upright position. The personal watercraft includes a vessel body, an engine, and an exhaust system. The...	08/14/2007
7252568	Outboard motor 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 accumula...	08/07/2007
7249987	Air intake device for watercraft An air intake device for a watercraft adapted to suppress noise generating from an intake system of an engine and can obtain good intake efficiency. The air intake device includes intake ports opening to a side surface of the engine, and an air cleaner located on th...	07/31/2007
7247067	Intake manifold for small watercraft A watercraft has an engine that has an intake system, an exhaust system, and a cooling system. An intake manifold is positioned above a cooled exhaust pipe. This position of the intake manifold with relation to the cooled exhaust pipe allows the intake manifold to m...	07/24/2007
7238068	Boat and outboard motor having air intake system 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 eng...	07/03/2007
7238069	Outboard motor 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 t...	07/03/2007
7232351	Personal watercraft A personal watercraft includes a saddle ride type seat provided at a roughly central portion of a watercraft body, an engine mounted on the lower side of the seat and directed in a front-rear direction of the watercraft body, and cylinders provided in the engine are...	06/19/2007
7214113	Steering handle for outboard motor A steering handle assembly for an outboard motor has a low speed control switch with at least one lead wire that is not twisted during control of the watercraft. The low speed control switch provides precise control of the engine speed of the outboard motor. The ste...	05/08/2007
7204733	Duct structure for watercraft A duct structure for a watercraft includes a flexible tube for providing an air intake for the watercraft and a flexible member for being disposed on an inner perimeter of a hole in a hull of the watercraft for holding the flexible tube. A convex portion of the flex...	04/17/2007
7168998	Personal watercraft forced air induction system A personal watercraft is disclosed as having a forced air induction system that is particularly suitable for aftermarket installation. The induction system includes support structure for supporting the compressor in a non-cantilevered manner within the watercraft bo...	01/30/2007
7168423	Gas sensor units for engines In a multipurpose engine with a reduced or limited displacement adapted for use in a portable work machine or the like, the engine includes a detecting element of a gas sensor for controlling an air-fuel ratio. Damage or degradation of the detecting element due to v...	01/30/2007
7134925	Small watercraft with structure inhibiting water from entering engine A personal watercraft includes a hull and an engine. The engine has an air intake system through which air is delivered to combustion chambers of the engine. An overturn switch detects overturn of the hull. A control device stops an operation of the engine based upo...	11/14/2006
7114478	Intake system of outboard motor An outboard motor includes an upright engine in which a plurality of cylinders are arranged vertically, an engine cover covering the engine, and an intake system for the engine. The intake system includes an intake manifold disposed on a side of the engine and provi...	10/03/2006
7112110	Fuel system container for a marine vessel A fuel system for a marine propulsion system provides a container, in addition to the fuel tank of the marine vessel, which contains fuel pumps, a filter, a pressure regulator, and possibly a fuel cooler. Some or all of these components can be submerged under the su...	09/26/2006
7101238	Watercraft having a four stroke engine with a supercharger A personal watercraft is disclosed with a hull, a seating assembly, and a four stroke internal combustion engine below the seating assembly. The engine has at least one intake valve for each of the combustion cylinder chambers, at least one exhaust valve for each of...	09/05/2006
7090552	Intake system for outboard engine An air intake system for an engine of an outboard motor includes air intake plenum chambers and corresponding air intake passages. Residual condensed fuel that can accumulate in the plenum chamber is guided to lower air intake passages through a slot at a predetermi...	08/15/2006

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Class 440/88A - Air intake for engine