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| Number | Title | Issue Date |
| 8171899 | Link type variable stroke engine In a link type variable stroke engine in which a piston, a crankshaft and an eccentric shaft are linked by a linking mechanism, a counterweight part which is provided so that in a projection view on a plane orthogonal to an axis of a rotary shaft, a center of gravit... | 05/08/2012 |
| 8166928 | Pressurized air variable compression ratio engine system A system for controlling a variable compression ratio in an engine is provided. The system includes a cylinder, an outer piston located inside the cylinder, the cylinder and the outer piston collectively defining a combustion chamber, an inner piston, variably posit... | 05/01/2012 |
| 8166930 | Variable compression ratio apparatus A variable compression ratio apparatus for varying a compression ratio, may include a connecting rod that is connected to a piston to take a combustion force; a pin link, one end of which is eccentrically connected to a crankshaft and the other end of which is pivot... | 05/01/2012 |
| 8161922 | Link type variable stroke engine In a link type variable stroke engine in which a piston, a crankshaft and an eccentric shaft are linked by a linking mechanism, counterweights are provided on the crankshaft so that in a projection view on a plane orthogonal to a rotation axis of the crankshaft, cen... | 04/24/2012 |
| 8161923 | Link type variable stroke engine In a link type variable stroke engine in which: a crankshaft and a rotary shaft having an eccentric shaft are each rotatably supported on a case main body formed integrally with a cylinder block and opened at one side to form a part of a crankcase, and a support pla... | 04/24/2012 |
| 8151746 | Control system for a variable compression engine A control system for an adjustment device for a variable compression ratio engine comprising: a jack head, a jack piston, a sprocket wheel, a movable transmission member, and a control valve. The jack piston is received within a chamber of the jack head defining fir... | 04/10/2012 |
| 8104437 | Electromechanical device for controlling a variable compression ratio engine An electromechanical device (800) which can be used to control the compression ratio of a variable compression ratio engine, includes mechanical elements for transmitting movement (801) between at least one electric engine (802) and at least one... | 01/31/2012 |
| 8100098 | Multi-link engine A multi-link engine has a piston coupled to a crankshaft to move inside an engine cylinder. A piston pin connects the piston to an upper link, which is connected to a lower link by an upper link pin. A crank pin of the crankshaft rotatably supports the lower link th... | 01/24/2012 |
| 8074613 | Variable compression ratio apparatus A variable compression ratio apparatus may include a connecting rod rotatably connected to the piston so as to receive the combustion force therefrom, a pin link mounted to the crankshaft and rotatably connected to the connecting rod so as to receive the combustion ... | 12/13/2011 |
| 8074612 | Variable compression ratio apparatus A variable compression ratio apparatus is disclosed. An upper connecting rod has one end rotatably connected to a piston so as to reciprocate motion of the piston. A lower connecting rod has one end rotatably connected to the other end of the upper connecting rod. A... | 12/13/2011 |
| 8056514 | Pressure device for a variable compression ratio engine A pressure device maintains the raceways (48, 160 to 165) of the main moving components (3, 5, 7 and 40) of a variable compression ratio engine permanently in contact with one another and with the faces on which they rest in a cylinder ca... | 11/15/2011 |
| 8015955 | Variable stroke A variable stroke characteristic engine is provided in which a piston (11) and a crankshaft (30) are linked to a control shaft (65) via a variable stroke link mechanism (LV), and the variable stroke link mechanism (LV) is operated by an actuator... | 09/13/2011 |
| 7992529 | Internal combustion engine In an internal combustion engine, comprising: an upper link (11) connected via a piston pin (21) to a piston (32) that reciprocates within a cylinder; a lower link (12) attached to a crank pin (33b) of a crankshaft (33 | 08/09/2011 |
| 7980207 | Multi-link engine A multi-link engine has a piston that moves inside a cylinder. A piston pin connects the piston to an upper link, which is connected to a lower link. A crank pin of a crankshaft supports the lower link thereon. The lower link is pivotally connected to one end of a c... | 07/19/2011 |
| 7966980 | Variable compression ratio apparatus A variable compression ratio apparatus that changes the compression ratio of an air-fuel mixture in a combustion chamber according to a driving state of an engine, enablements may include a connecting rod receiving the combustion force from the piston; a pin link re... | 06/28/2011 |
| 7946260 | Internal combustion engine with variable compression ratio A coupler, such as a piston pin, is pivotally coupled to a piston such that the piston can pivot about a first axis relative to the coupler. A connecting rod is coupled to the coupler for pivoting about a second axis. The relative positions of the first and second a... | 05/24/2011 |
| 7934475 | Internal combustion engine having a variable compression ratio In an internal combustion engine including cylinders arranged in a housing, a crankshaft, pistons disposed in the cylinders so as to be movable by the crankshaft, and a device for varying a compression ratio of the internal combustion engine wherein the device, for ... | 05/03/2011 |
| 7827943 | Variable compression ratio system A variable compression ratio system for use in a reciprocating-piston engine. The system allows the compression ratio in a combustion cylinder of the engine to be varied by varying the distance from a combustion chamber facing surface of a piston to the center of pi... | 11/09/2010 |
| 7798109 | Internal combustion engine with a variable compression ratio In an internal combustion engine including a housing with cylinders arranged in the housing, a crankshaft, and pistons moveably disposed in the cylinders and operatively connected to the crankshaft, and a device for changing the compression ratio of the cylinders of... | 09/21/2010 |
| 7789050 | Device and method for varying a compression ratio of an internal combustion engine The invention relates to a device for varying a compression ratio in an internal combustion engine comprising at least one cylinder (10) provided with a combustion chamber (20), a movable element provided with a piston (14) which is translationa... | 09/07/2010 |
| 7730856 | Engine with variable volumetric ratio Four-stroke internal combustion engine comprising a housing component having a first series of cylinders, each with an axis and a diameter, and a second series of cylinders, each with an axis and a diameter, in which each cylinder of the first series communicates wi... | 06/08/2010 |
| 7685974 | Variable compression ratio engine with isolated actuator A variable compression ratio piston (26) and connecting rod (18) assembly for an internal combustion engine (14) includes an eccentric bushing (28) that carries a piston pin bushing (42) and contains a journaled portion (48)... | 03/30/2010 |
| 7681538 | Internal combustion engine employing variable compression ratio mechanism An internal combustion engine which varies a compression ratio by changing a top dead center position of a piston, including an engine block, the piston disposed in the engine block, a crank shaft supported by the engine block, and a plurality of links connecting th... | 03/23/2010 |
| 7669559 | Internal combustion engine In a reciprocating piston engine employing a variable compression ratio mechanism linked to a reciprocating piston for variably adjusting a geometrical compression ratio by varying at least a piston top dead center position, so that the top dead center position obta... | 03/02/2010 |
| 7661395 | Stroke-variable engine In a stroke-variable engine, the position of a center of gravity of a subsidiary connecting rod is determined so that a distance between the position of the center of gravity of the subsidiary connecting rod and an axis of a crankpin is smaller than a distance betwe... | 02/16/2010 |
| 7661396 | Actuation subsystem of variable compression ratio control system for internal combustion engine The VCR actuation subsystem includes a drive mechanism, a connecting mechanism, and an actuator mechanism. The drive mechanism includes generally identical first and second clutch assemblies. The clutch assembly includes a clutch driver plate assembly mounted on the... | 02/16/2010 |
| 7631620 | Variable compression ratio mechanism for an internal combustion engine An internal combustion engine has a mechanism to control crankshaft axis position and control combustion chamber compression ratio. The mechanism includes control ring, rotatably supporting crankshaft, and rotatably installed in the engine housing. The control shaft... | 12/15/2009 |
| 7578266 | Variable displacement and/or variable compression ratio engine The present invention relates to an internal-combustion engine comprising at least one cylinder (10) in which a piston (14) slides between a top dead center (TDC) and a bottom dead center (BDC) under the action of a connecting rod (20) of axis X... | 08/25/2009 |
| 7568453 | Two-stroke engine with variable compression The invention consists of a two-stroke opposing cylinder engine that includes a length flushing system and two crankshafts (1, 3) and a novel type of phase setting mechanism which enables the compression ratio to be adjusted in operation. Two intermediate gea... | 08/04/2009 |
| 7562642 | Adjustment device for a variable compression ratio engine An adjustment device for a variable compression ratio engine. An engine block (100) is equipped internally with a transmission device (1) including, for at least one piston (2), a transmission member (3) which co-operates with (i) a rolli... | 07/21/2009 |
| 7546820 | Variable compression ratio engine with lost motion coupling A variable compression ratio piston (26) and connecting rod (18) assembly for an internal combustion engine (14) includes an eccentric bushing (28) that carries a piston pin bushing (42) and contains a journaled portion (48)... | 06/16/2009 |
| 7533638 | Variable compression ratio engine with dedicated bumper A variable compression ratio piston (26) and connecting rod (18) assembly for an internal combustion engine (14) includes an eccentric bushing (28) that carries a piston pin bushing (42) and contains a journaled portion (48)... | 05/19/2009 |
| 7527026 | Variable compression ratio engine with external actuation impulse A variable compression ratio piston (26) and connecting rod (18) assembly for an internal combustion engine (14) includes an eccentric bushing (28) that carries a piston pin bushing (42) and contains a journaled portion (48)... | 05/05/2009 |
| 7469663 | Tapered latch pin A variable compression ratio piston (26) and connecting rod (18) assembly for an internal combustion engine (14) includes an eccentric bushing (28) that carries a piston pin bushing (42) and contains a journaled portion (48)... | 12/30/2008 |
| 7438029 | Piston waveform shaping An assembly includes at least one piston, a rotating member, a transition arm, and a mechanism. The transition arm is configured to translate between rotational movement of the rotating member and a first linear motion of the piston. The mechanism is configured to s... | 10/21/2008 |
| 7434548 | Control device for hydraulic actuator in piston In a control device for a hydraulic actuator, one end of an oil passage that is provided through a connecting rod, a crankshaft and a crankcase supporting the crankshaft is connected to a hydraulic chamber of a hydraulic actuator provided in a piston connected to th... | 10/14/2008 |
| 7412958 | Internal combustion engine A piston-crank mechanism links crankpins of a crankshaft with piston pins of pistons by using a plurality of links. The piston-crank mechanism allows an upward inertia force produced near a top dead center of each piston to be smaller than a downward inertia force p... | 08/19/2008 |
| 7406930 | Variable displacement mechanism for internal combustion engine An internal combustion engine includes a cylinder structure in which a crankshaft assembly is journalled for rotation about a main axis of a main crankshaft segment having a main axis. A crank web is attached to the main crankshaft segment and projects from the main... | 08/05/2008 |
| 7370613 | Eccentric crank variable compression ratio mechanism A variable compression ratio mechanism for an internal combustion engine that has an engine block and a crankshaft is disclosed. The variable compression ratio mechanism has a plurality of eccentric disks configured to support the crankshaft. Each of the plurality o... | 05/13/2008 |
| 7367305 | Internal combustion engine and connecting rod therefor A connecting rod of an internal combustion engine, and an internal combustion engine including the connecting rod, a piston, a crankshaft and a float bearing as main moving parts. A piston is connected to a connecting rod by a spherical joint and has radial ribs on ... | 05/06/2008 |
