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| Number | Title | Issue Date |
| 7357205 | Motorcycle A motorcycle can include an air cleaner in communication with intake ports of its engine, and a wind introduction duct for introducing a wind into a primary chamber of the air cleaner. The wind introduction duct can extend from an outside air introduction port locat... | 04/15/2008 |
| 7334565 | Multiple throttle apparatus According to the present apparatus, there are provided a first throttle body 10 and a second throttle body 10 that define multiple intake passages corresponding to arranged cylinders on one side and on the other side of a V-type engine respectively, a ... | 02/26/2008 |
| 7273026 | Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 7267099 | Multicylinder engine intake system A multicylinder engine intake system includes: first and second throttle bodies; bypasses provided in the first and second throttle bodies and having downstream ends opened to intake paths on downstream sides of throttle valves; and a common bypass control valve whi... | 09/11/2007 |
| 7210547 | Straddle-type vehicle A straddle-type vehicle is provided with an engine unit and an engine air-intake system. The engine unit includes a cylinder head provided with an air-intake port communicating with a combustion chamber, the air-intake port being provided with a valve seat disposed ... | 05/01/2007 |
| 7069920 | Air supply unit for an internal combustion engine An air supply unit for an internal combustion engine; the air supply unit is provided a number of butterfly valves and a distributor device, the latter being provided, for each butterfly valve, with a distribution duct capable of placing an internal duct of said but... | 07/04/2006 |
| 7028681 | Twin carburetor for V-type engine To improve productivity of a connection member between first and second carburetors, and to reduce maintenance work area for a main drive throttle valve lever, a driven throttle valve lever and a connection lever, a main drive throttle valve lever is arranged to pro... | 04/18/2006 |
| 6962047 | Engine intake A/F ratio control system in outboard engine system In an engine intake A/F ratio control system in an outboard engine system, a secondary air passage (P) for supplying secondary air for regulating the A/F ratio of an air-fuel mixture is connected to a carburetor (33) in an intake system of an engine (E), and ... | 11/08/2005 |
| 6941916 | Auto enrichener An auto-enrichener for an engine, including an enriching conduit for carrying fuel and air to an engine, and a valve disposed in the conduit. The valve is adjustable between at least an open configuration and a closed configuration. In the open configuration passage... | 09/13/2005 |
| 6481417 | Supplemental fuel system for a multi-cylinder engine This invention provides a low cost, easily installed means of supplying supplemental fuel to an engine for the purpose of cold starting and enrichment, which also functions as a means for manual operator adjustment of low speed fuel flow. This system is e... | 11/19/2002 |
| 6460330 | Engine intake A/F ratio control system in outboard engine system In an engine intake A/F ratio control system in an outboard engine system, a secondary air passage (P) for supplying secondary air for regulating the A/F ratio of an air-fuel mixture is connected to a carburetor (33) in an intake system of an engine (E), ... | 10/08/2002 |
| 6382196 | V-type two cylinder engine and straddle-type four wheel all terrain vehicle having it mounted thereon A V-type two cylinder engine comprises: cylinders arranged forward and rearward such that they are inclined in V shape; a downdraft carburetor unit placed between the cylinders and including twin venturi bores provided for the respective cylinders and an ... | 05/07/2002 |
| 6371079 | Method and arrangement for synchronizing at least two power adjusting elements of an internal combustion engine The invention is directed to a method and an arrangement for synchronizing at least two power-adjusting elements of an internal combustion engine which are electrically driven independently of each other. For carrying out the synchronization, the interval... | 04/16/2002 |
| 6334430 | Intake air amount control system for engine An intake air amount control system for an engine includes a plurality of throttle devices each of which is comprised of a butterfly-type throttle valve rotatably carried in an intake passage body and which are disposed in a pair at two points spaced from... | 01/01/2002 |
| 6105562 | Starting control valve assembly for a multiple throttle To simplify the idle opening amount between each cylinder and simplify the structure of a throttle body, starter valves having tuning screws capable of respectively adjusting the flow amount of air supplied to the intake port of each throttle body are arr... | 08/22/2000 |
| 5921225 | Intake control mechanism for marine propulsion unit An intake control mechanism for controlling the flow of air through an air intake of an engine is disclosed. The air intake comprises an intake member defining an intake passage corresponding to each combustion chamber of the engine. A throttle valve and ... | 07/13/1999 |
| 5699777 | Fuel supplying system for vertical engine with multiple cylinders A fuel supplying system for a vertical engine provided with multiple cylinders arranged in a vertical direction, respectively, in an installed state of the engine and a crankshaft disposed vertically therein, comprising a plurality of fuel supplying means... | 12/23/1997 |
| 5522746 | Multi-cylinder engine structure and outboard engine A multi-cylinder engine structure includes a multi-cylinder engine body having a plurality of cylinders vertically arranged therein. A fuel feed system has a fuel pump connected to a plurality of carburetors disposed in a vertical arrangement sideways of ... | 06/04/1996 |
| 5517977 | Mounting arrangement for engine components of an outboard motor A mounting arrangement for an accelerator pump and a choke actuation mechanism, which are used in conjunction with a plurality of charge formers, minimizes the girth of the engine while making these components more accessible and easing assembly. An actua... | 05/21/1996 |
| 5450831 | Fuel supply system for an engine A fuel delivery system for an engine having multiple, vertically spaced charge formers, and the system is provided with a fuel conduit arrangement so that the individual conduits serving the individual charge formers are kept relatively short in length, b... | 09/19/1995 |
| 5367998 | Fuel injection system for an engine A fuel injection and control system for a V-type, two cycle, crankcase compression, internal combustion engine. The fuel injection system includes fuel injectors positioned in the valley of the engine and which are supplied with fuel under pressure from a... | 11/29/1994 |
| 5326293 | Multi-cylinder engine structure and outboard engine A multi-cylinder engine structure includes a multi-cylinder engine body having a plurality of cylinders vertically arranged therein. A fuel feed system has a fuel pump connected to a plurality of carburetors disposed in a vertical arrangement sideways of ... | 07/05/1994 |
| 5056474 | Internal combustion engine having multiple carburetors and a starting mixture The invention is directed towards a fuel enrichment system for a multi cylinder internal combustion engine. Each cylinder of the engine is served by a separate carburetor. Manifold passageways are interposed between the cylinders and the respective carbur... | 10/15/1991 |
| 5018503 | Fuel increasing system for engine A fuel increasing system for an internal combustion engine having a normal charge forming system with a plurality of carburetors. A supplemental fuel supplying system is incorporated that draws fuel from the fuel bowl of one of the carburetors to a supple... | 05/28/1991 |
| 4957072 | Balanced radial engine A low cost multi cylinder radial aircraft engine is composed of an even number of individually functional, single cylinder slider crank model engines. They are mounted to a plate to form equally spaced radially oriented cylinders. In the preferred embodim... | 09/18/1990 |
| 4862839 | Multiport manifold A manifold is provided for a multicylinder engine, particularly a motorcycle engine, wherein separate, independent passages are provided to connect separate carburetors to individual cylinder inlet ports. A plurality of such passages are provided in a sin... | 09/05/1989 |
| 4815427 | Fuel enrichment system A fuel enrichment system for a multi-cylinder engine having a manifold balance line to deliver fuel to each of the cylinders as needed includes a valve located adjacent one of the carburetors to supply additional air/fuel mixture to approximately the cent... | 03/28/1989 |
| 4637363 | Multi-cylinder internal-combustion engine control device An internal-combustion engine which includes two cylinder groups, of which one cylinder group operates constantly, whereas the second cylinder group is inactive in a part-load operation for better fuel economy. However, during forward or reverse operation... | 01/20/1987 |
| 4627400 | Porting system for internal combustion engine An induction system for an internal combustion engine wherein each chamber of the engine is provided with three intake ports and one charge former serves two of those intake ports while another charge former serves the other intake port. The charge former... | 12/09/1986 |
| 4532904 | Air-fuel ratio control device for internal combustion engines An air-fuel ratio control device for an internal combustion engine equipped with a plurality of variable venturi type carburetors each having a slow system, in which the flow rate of air supplied to the slow systems of the carburetors is controlled depend... | 08/06/1985 |
| 4517940 | Intake device for internal combustion engine Intake device for multiple cylinder I.C. engine, the intake opening of the carburetor for each cylinder being connected with a carburetor base connected to an air cleaner in chamber form. The chamber intake openings for each carburetor are separated by pa... | 05/21/1985 |
| 4494502 | Idling controller of variable displacement engine An idling controller for a variable displacement engine which is capable of operating either in a partial-cylinder or an all-cylinder mode by varying the number of cylinders in operation. When the engine runs at idle, the idling controller assures optimum... | 01/22/1985 |
| 4494503 | Variable displacement engine A multiple cylinder engine of the type which is capable of controlling the number of operating cylinders to operate the engine in either in full or partial displacement mode, wherein the operation is switched smoothly between the full displacement and par... | 01/22/1985 |
| 4489685 | Multi-cylinder internal combustion engine In a multi-cylinder internal combustion engine having a plurality of cylinders which are supplied with air via one common throttle valve and a control unit for regulating the number of operating cylinders which suspends the operation of an arbitrary numbe... | 12/25/1984 |
| 4487170 | Carburetor device for V-type internal combustion engines A carburetor device for V-type internal combustion engines having first and second cylinders disposed in a form like V and first and second carburetors disposed between those cylinders and adapted to supply a gaseous mixture to the associated cylinders in... | 12/11/1984 |
| 4485776 | Cylinder-number-controlled engine A multicylinder engine whose working cylinders are variably controlled in number to suit operating requirements, with an air fuel mixture fed from a single throttle valve to the working cylinder or cylinders through an intake manifold, includes at least o... | 12/04/1984 |
| 4485777 | Multi-cylinder internal combustion engine In a multi-cylinder internal combustion engine having a plurality of cylinders which are supplied with air via one common throttle valve and a control unit for regulating the number of operating cylinders to rest an arbitrary number of cylinders by blocki... | 12/04/1984 |
| 4463711 | Carburetion system for a V-type internal combustion engine An improved carburetion system for a V-type internal combustion engine including a first carburetor and a second carburetor disposed in a space between a first cylinder and a second cylinder arranged in the form of V-shape and adapted to supply an air-fue... | 08/07/1984 |
| 4459953 | Cylinder-number-controlled engine A multicylinder engine whose working cylinders are variably controlled in number to suit operating requirements, with an air fuel mixture fed from a single throttle valve to the working cylinder or cylinders through an intake manifold, includes at least o... | 07/17/1984 |
| 4449496 | Cylinder-number-controlled engine A multicylinder engine whose working cylinders are variably controlled in number to suit operating requirements, with an air fuel mixture fed from a single throttle valve to the working cylinder or cylinders through an intake manifold, includes at least o... | 05/22/1984 |
