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| Number | Title | Issue Date |
| 7905205 | 2-stroke engine crank shaft A two-cycle engine heaving a pair of disk wheel shaped counterweights attached to the crankshaft. The rims of the first and second counterweights provided with a plurality of parallel grooves arranged continuously around the circumference of the rims and extending f... | 03/15/2011 |
| 7574985 | Two-stroke internal combustion engine A two-stroke internal combustion engine with at least one cylinder (1), comprising a crankcase (2) flow-connected to the cylinder (1) by at least one transfer passage (3) and provided with an air intake manifold (4) and comprising ... | 08/18/2009 |
| 7540263 | Fuel injection system for two-stroke internal combustion engines A fuel injection system for a two-stroke internal combustion engine (1) elastically housed in a compartment and comprising a carburettor (30) with which there are associated an induction port (9) for the air/fuel mixture and a fuel feed conduit ... | 06/02/2009 |
| 7516724 | Transmissible connecting mechanism for a throttle A transmissible connecting mechanism drives a lead air control valve and an air-fuel mixture throttle valve of a carburetor of a stratified scavenging two-cycle engine in an interlocking manner. A cam plate having a cam groove is attached to an end portion of a valv... | 04/14/2009 |
| 7513225 | Internal combustion engine An internal combustion engine having an intake channel for supply of fuel and combustion air, and divided over a portion of its length into a mixture channel, and into a supply channel for supply of largely fuel-free air. A simple manufacture of the engine and a sim... | 04/07/2009 |
| 7441518 | Internal combustion engine and method of operating same An internal combustion engine having an intake channel that opens into a crankcase. A first fuel channel opens into the intake channel to supply fuel thereto as a function of underpressure in the intake channel. An auxiliary channel opens into a transfer channel tha... | 10/28/2008 |
| 7415949 | Cylinder for a crankcase scavenged internal combustion engine A cylinder (1) for a crankcase scavenged two-stroke engine, comprising a cylinder bore (2) with centre line (12) and on opposite sides of the cylinder located closed transfer ducts (3, 3′), which cylinder (1) has an underside ( | 08/26/2008 |
| 7389754 | System for a two-stroke crankcase scavenged combustion engine The present invention relates to a system (1) for supplying an air-fuel mixture to a two-stroke internal combustion engine cylinder (2), comprising a carburettor (3) having a throttle valve (4) and usually a choke valve. The system furthe... | 06/24/2008 |
| 7380526 | Power tool A power tool has a working tool that is driven by a two-stroke engine that has a cylinder and a piston reciprocating within the cylinder and delimiting a combustion chamber in the cylinder. The two-stroke engine has a crankcase with a rotatably supported crankshaft ... | 06/03/2008 |
| 7363888 | Two-stroke engine A two-stroke engine has a cylinder and a piston reciprocating in the cylinder and delimiting a combustion chamber. The piston has at least one piston recess. A crankshaft is rotatably arranged in a crankcase connected to the cylinder. A connecting rod connects pisto... | 04/29/2008 |
| 7357118 | Throttle body A throttle valve comprises an intake passage. A throttle shaft extends in a generally vertical direction. The lower end of the throttle shaft passes through the throttle valve and projects downward. A throttle lever is connected to the downwardly projecting lower en... | 04/15/2008 |
| 7337771 | Method and apparatus for the cylinder-specific determination and control of a fuel injection quantity In a method and apparatus for the cylinder-specific determination and control of a fuel injection quantity for a multi-cylinder internal combustion engine, the exhaust gas pressures of the cylinders of the internal combustion engine is recorded on a time-resolved, i... | 03/04/2008 |
| 7331315 | Two-stroke engine with fuel injection A two-stroke internal combustion engine is provided with a fuel injector. The two-stroke internal combustion engine may have at least one transfer passage, an air channel, and a fuel injector. The transfer passage is between a crankcase and a combustion chamber of t... | 02/19/2008 |
| 7331314 | Two-stroke engine A two-stroke engine has a cylinder with a combustion chamber that is delimited by a reciprocating piston that drives with a connecting rod a crankshaft rotatably supported in a crankcase. In predetermined positions of the piston, the crankcase is connected by at lea... | 02/19/2008 |
| 7328686 | System and method to control cylinder activation and deactivation Engine cylinder reactivation from a fuel-cut state is controlled based on a calculated future engine speed and a minimum allowable engine speed. The future engine speed is calculated based on the current rate of change of engine speed and a duration required to reac... | 02/12/2008 |
| 7325528 | Method of operating a single cylinder two-stroke engine The invention is directed to a method for operating a two-stroke engine having a cylinder in which a combustion chamber is formed and which includes devices for metering fuel and supplying combustion air as well as an ignition device for igniting a mixture in the co... | 02/05/2008 |
| 7310945 | Work-space pressure regulator A device and method for equalizing the pressure between work-space and crankcase in a pressurized engine, such as a Stirling engine. The device consists of a two-way valve connected between the work-space and the crankcase. The valve is connected to the work-space w... | 12/25/2007 |
| 7293536 | Two-cycle combustion engine To provide a two cycle combustion engine provided with scavenging passages of a structure, which is effective to minimize a deposit of fuel contained in an air/fuel mixture and allows the mixture to be injected into a combustion chamber so as to avoid the blow-off o... | 11/13/2007 |
| 7287741 | Rotary throttle valve carburetor A rotary throttle valve carburetor includes a main body defining a mixing passage and a valve bore, and a throttle valve rotatably received in the valve bore to selectively open and close the mixing passage. The carburetor main body includes an integral throttle val... | 10/30/2007 |
| 7281044 | SAN infrastructure on demand service system The present invention provides improved techniques for managing storage resources, such as disk drives, I/O ports, and the like according to user demand for these storage resources. In a specific embodiment, a centralized SIoD system manages installed storage resour... | 10/09/2007 |
| 7280911 | Method for the detection of faults in the engine control in internal combustion engines having at least two control units A system and method for monitoring the control of an engine having at least two control units, which is constructed of at least two cylinder rows or of two partial engines is provided. A control unit is assigned to each cylinder row or each partial engine, which con... | 10/09/2007 |
| 7275511 | Intake manifold assembly An intake assembly is provided for a sequentially fired eight cylinder V-type internal combustion engine including a cylinder block having a first band of cylinders and a second bank of cylinders. The assembly includes first, second, third, and fourth intake plenums... | 10/02/2007 |
| 7270110 | Four stroke internal combustion engine with inlet air compression chamber A four-stroke engine with intake air compression chamber. The intake air compression chamber has a pressure responsive displaceable member therein to compress inlet air passively in response to differential pressure between a sealed crankcase and air in the inlet si... | 09/18/2007 |
| 7264224 | Valve with offset venturi A valve is disclosed having a valve closing member that divides the valve bore into passageways of unequal cross sectional areas when in an open position. A venturi is positioned within the valve bore upstream of the valve closing member. The throat of the venturi m... | 09/04/2007 |
| 7261282 | Carburetor with intermediate throttle valve blocking position A carburetor including a frame having a first air/fuel channel and a second air channel; and a throttle valve assembly connected to the frame and having two valve sections. Each valve section is located in a respective one of the channels. A second one of the valve ... | 08/28/2007 |
| 7261281 | Carburetor A carburetor including a mixture channel and an air channel that are separated from one another, wherein a fuel opening opens into the mixture channel. A throttle element is rotatable about an axis of rotation that extends transverse of the direction of flow in the ... | 08/28/2007 |
| 7243622 | Two-stroke internal combustion engine A two-stroke internal combustion engine (1) includes one pair or two pairs of scavenging passageways (31, 32) of reverse flow system where scavenging outlet ports (31b, 32b) are opened to the cylinder bore (10a... | 07/17/2007 |
| 7243621 | Two-stroke engine A two-stroke engine (1, 31, 41, 51) includes a cylinder (2) having a combustion chamber (5). The combustion chamber (5) is delimited by a piston (7) which drives a crankshaft (25) rotatably journalled in a crankcase (3 | 07/17/2007 |
| 7228825 | Two-stroke engine assembly A two-stroke engine includes an air channel for supplying substantially fuel-free combustion air and a mixture channel for supplying an air/fuel mixture. The air channel and the mixture channel connect the cylinder of the two-stroke engine to an air filter. A sectio... | 06/12/2007 |
| 7225769 | Two-stroke cycle engine This invention concerns a two-stroke cycle engine, more specially it concerns a two-stroke cycle engine using a preceding air-layer for scavenging. It has a scavenger passage connected to a branching scavenger passage opened to said scavenging port. The engine has a... | 06/05/2007 |
| 7210433 | Stratified scavenged two-stroke engine A two-stroke internal combustion engine includes dual transfer passages in gaseous communication between a crankcase chamber and a combustion chamber of the engine, an air passage through the crankcase to the crankcase chamber and in gaseous communication with a car... | 05/01/2007 |
| 7210432 | Internal combustion engine A two-stroke engine is for a portable handheld work apparatus such as a motor-driven chain saw, cutoff machine, brushcutter or the like. A combustion chamber (3) is configured in the cylinder (2) of the engine (1) and is delimited by a reciproca... | 05/01/2007 |
| 7201120 | Two-cycle engine A two-cycle engine having a piston reciprocalbly mounted in a cylinder in which a combustion chamber is formed. In prescribed positions of the piston, the combustion chamber communicates with a crankcase via at least one transfer channel. A portion of an intake chan... | 04/10/2007 |
| 7194989 | Energy efficient clean burning two-stroke internal combustion engine A precision cast engine has a piston unit and a rotor unit to translate linear thrust from the piston unit into rotary power. Each piston rod is attached to a thrust absorber carriage running on precision bearings to eliminate piston drag on the cylinder walls. One ... | 03/27/2007 |
| RE39506 | Crankcase scavenged two-stroke engines A crankcase scavenged two-stroke engine includes a piston reciprocably mounted in a cylinder. The cylinder wall has an exhaust port and a rear transfer port opposed thereto formed in it. The rear transfer port communicates with the interior of the crankcase via a re... | 03/13/2007 |
| 7182800 | Manually operated tool A manually operated implement such as a chainsaw, parting-off grinder or similar device is provided and has an internal combustion engine to drive a tool, an air cleaning unit and a tank housing. The tank housing is a cast part and a fuel tank is located in the tank... | 02/27/2007 |
| 7168401 | Multi-location fuel injection system A two-stroke engine having both a direct injector and an indirect injector. The direct injector injects fuel into the cylinder without passing through the crank case. The indirect injector is in fluid communication with the crank case. It provides fuel delivery thro... | 01/30/2007 |
| 7121247 | Spherical rotary engine valve assembly A spherical rotary engine valve assembly for use in an internal combustion engine. ... | 10/17/2006 |
| 7104253 | Stratified scavenging carburetor In one presently preferred embodiment a stratified scavenging carburetor has a scavenging air passage with an air control valve and a fuel and air mixing passage with a throttle control valve, and a lost motion coupling associated with the valves to delay opening of... | 09/12/2006 |
| 7104526 | Carburetor with intermediate throttle valve blocking position A carburetor including a frame having a first air/fuel channel and a second air channel; and a throttle valve assembly connected to the frame and having two valve sections. Each valve section is located in a respective one of the channels. A second one of the valve ... | 09/12/2006 |
