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WO/2001/002752A1 |
The main objective of this patent is to propose novel crank mechanisms capable of improving the thermodynamic efficiency of the engine by a) achieving combustion at constant volume or isometric combustion, made possible by allowing the p...
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WO/2000/077367A2 |
A piston and connecting rod assembly for an internal combustion engine comprises a piston (12), a connecting rod (15), and a spring (13). The connecting rod (15) has a first end operatively associated with the piston (12) for movement th...
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WO/2000/068565A1 |
An improved poppet valve (200) provides quick opening characteristic that allows for easy breathing while avoiding the refrigerating loss of heat associated with conventional poppet valves. The improved poppet valve includes a valve stem...
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WO/2000/061928A1 |
The invention aims at providing higher efficiency and good exhaust gas performance. To this end, a fresh gas is compressed in a first cylinder chamber (1) having a first piston (3) during successive compression strokes and compressed in ...
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WO2000009879A9 |
An internal combustion engine is provided with an expansion cylinder (10) and at least one combustion cylinder (20), preferably two or four combustion cylinders per expansion cylinder. An air-fuel mixture is ignited within the combustion...
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WO/2000/058612A1 |
A coupling arrangement for interconnecting a piston gudgeon pin (6) and a crankshaft journal (4) of a reciprocating piston engine, said crankshaft journal (4) being connected to a crankshaft (3) by at least one crankshaft arm, the arrang...
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WO/2000/043653A1 |
An expansion-compression engine is disclosed for performing the function of a combustion engine, compressor, supercharger or pump. The engine consists of at least one unit comprising a casing (5) in the shape of a torus sector, spanning ...
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WO/2000/043652A1 |
The system finds application with the motor vehicles provided with internal combustion engines and with at least one auxiliary hydraulic mechanism. It integrates the function of providing hydraulic liquid under pressure for the auxiliary...
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WO/2000/042304A1 |
The present invention may be used in internal combustion engines for both mobile or stationary applications. In order to increase the performance index, to reduce the noise level upon the exhaust of used gases and to improve ecological c...
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WO/2000/040840A1 |
A low cost new internal combustion engine with increased mechanical efficiency, fuel saver and pollution control and in particular a new internal combustion engine having improved lubricating mechanism for getting extra time to burn the ...
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WO/2000/028198A1 |
Four-stroke internal combustion engine with variable geometric compression ratio, electrically operated inlet valves and means for supplying a homogeneous fuel/air mixture to the engine cylinders. The inlet valves (9) and the compression...
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WO/2000/006876A1 |
An engine is disclosed. According to one embodiment of the present invention, the engine comprises a compressor, and combustor, and an expander. The compressor compresses ambient air. The combustor burns the compressed air, and produces ...
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WO/2000/003132A1 |
A superexpansive rotary engine having a rotor and a rotor housing, the rotor being rotated within the inner wall of the rotor housing. A gap between the rotor and the inner wall of the rotor housing defines an engine chamber. A plurality...
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WO/2000/000725A1 |
Highly efficient engine. The system includes an internal combustion engine having at least one piston in a cylinder, the cylinder including a cylinder head. The engine operates on an unsymmetrical expansion and compression cycle wherein ...
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WO/1999/058831A1 |
The present invention provides an improved compound internal combustion engine designed efficiently from a thermodynamic standpoint. The present invention has improved fuel efficiency and emission control for both noxious gaseous outputs...
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WO/1999/057425A1 |
The invention concerns a four-stroke internal combustion engine, wherein the internal combustion is produced in an ideal ignition position (11) in the combustion chamber located between a power piston (12) a counter-piston (1), the power...
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WO/1999/050541A1 |
The efficiency of a vehicle having a body and a reciprocating piston four-stroke internal combustion engine is increased substantially by greatly reducing the size of the engine relative to the weight of the body and is further increased...
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WO/1999/031373A1 |
The invention relates to an arrangement for a combustion engine (1) comprising at least one cylinder (2), an intake (3, 4) for the supply of air, an exhaust outlet (9, 10) for discharging exhaust gases, a further line (15) for recirculat...
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WO/1999/014472A1 |
An internal combustion engine includes one or more pistons (4), each of which is mounted to reciprocate in a respective cylinder (2) and is pivotally connected to a connecting rod (6) which is connected to a respective crank (10) on a cr...
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WO/1999/013206A1 |
A lean burn auto-ignition internal combustion engine which has a combustion volume which includes two parts one entering into the other, the volume of the second part being variable by control means (34) which takes into account the vari...
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WO/1999/011906A1 |
A coupling arrangement for interconnecting a gudgeon pin (6) and a crankshaft journal (4) of a reciprocating piston engine, the arrangement comprising: a connecting rod (7) having a first end pivotally connected to the crankshaft journal...
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WO/1999/006682A2 |
The invention relates to an internal combustion fuel injection engine for two-stage expansion provided with one or more pairs of cylinders. Each unit includes a four-stroke first-stage cylinder (1) and a second-stage, double-acting, two-...
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WO/1998/059155A1 |
A method of operating an internal combustion reciprocating piston engine comprises the steps of: moving a piston (12) within a cylinder (10) to compress a charge in the cylinder (10) and igniting the compressed charge while the piston is...
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WO/1998/049437A1 |
A combustion engine (10) has a number of engine cylinders (21-1 - 21-5) arranged in an annular series around a common middle drive shaft (11) with the cylinder axes running parallel to the drive shaft. Each cylinder includes a pair of pi...
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WO/1998/030792A1 |
An orbital internal combustion engine including a pair of rigidly interconnected opposed cylinders (24) having a pair of rigidly interconnected pistons (16, 18) reciprocally mounted therein with the pistons each including a rigid piston ...
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WO/1998/020268A1 |
An improved engine output shaft (106) includes a crankpin assembly (104) for operatively connecting the shaft (106) to each reciprocating piston for translating the reciprocating motion of each piston to rotary motion of the shaft (106) ...
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WO/1998/013581A1 |
An engine comprises a cylinder (1), a combustion chamber, a piston (2) reciprocable within the cylinder, a connecting rod (3) and a rotatable output shaft (4). The piston (2) is in drivable connection with the output shaft (4) via the co...
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WO/1998/001656A1 |
Eccentrically mounted connecting rod big end for an internal combustion engine. An eccentric (3) that rotates clockwise (11) is mounted on the crankshaft journal (1), which rotates anti-clockwise (10), by means of a friction bearing (2)....
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WO/1997/048884A1 |
The invention discloses a method for a pollution abating engine comprising an independent suction and compression chamber (1), an independent expansion chamber with a constant volume (2), and an independent expansion and exhaust chamber ...
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WO/1997/044572A1 |
The disclosed turbo-alternating engine exploits the gas generated in the cylinder of the alternating system in order to actuate a system of turbines ahead of the cylinders and at the extremity of the crankshaft in order to transmit the p...
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WO/1997/043529A1 |
An internal combustion engine includes one or more pistons (4), each of which is mounted to reciprocate in a respective cylinder (2) and is pivotally connected to one end (11) of an elongate link member which is pivotally connected to th...
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WO/1997/041341A1 |
An internal combustion engine includes a cylinder (21), a head (58) closing one end of the cylinder (21) and a piston (24) slidably mounted in the cylinder (22) for reciprocating motion in the usual manner, wherein reciprocation is conve...
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WO/1997/041338A1 |
The invention relates to an arrangement for power transmission in a combustion engine (1), comprising an outgoing exhaust pipe (3), at least one device (10; 10', 7') for absorbing energy from exhaust gases in the exhaust pipe (3) and/or ...
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WO/1997/040270A1 |
Turbocharged internal combustion engine with exhaust return via a valve (7) on the intake side (5) of the turbocompressor unit (2) to the engine intake side. The turbine (3) and the compressor (4) of the turbocompressor unit are adapted ...
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WO/1997/039232A1 |
Procedure and devices relating to a cyclical internal combustion engine with a constant-volume independent combustion chamber in which, for each working cylinder or element, combustion chamber (1), combustion chamber (2) and expansion ch...
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WO/1997/037111A1 |
A negative pressure generator (20) is provided in an exhaust system (11) for generating negative pressure by accelerating the velocity of exhaust gas discharged from a combustion chamber, and the rotational output of a turbine (30) adapt...
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WO/1997/037112A1 |
A device for generating electric power by driving a turbine by using as energy an exhaust gas flow discharged from an internal combustion engine. A negative pressure generator (20) is provided in an exhaust system (11) for generating a n...
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WO/1997/022789A1 |
Device for controlling the engine braking power of an internal combustion engine (1) in a motor vehicle, which is equipped with a compression braking device arranged in brake mode to open the exhaust valves at the end of the induction st...
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WO/1997/018384A1 |
Improvements to the construction and operation of reciprocating internal combustion engines are described. The invention may have particular application to compression ignition engines. The constructional modifications relate to componen...
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WO/1997/016634A1 |
An engine (10) having a series of cylinders (12, 14, 16 and 18) in which pistons (30, 32, 34 and 36) are arranged for reciprocation and which are connected to a crankshaft (38). Two of the cylinders (12 and 18) operate in an Otto cycle, ...
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WO/1997/013971A1 |
A drive train includes an engine having a power cylinder (12) with a power piston (4). Fuel is fed into a combustion chamber (2) located within the power cylinder at one side of the power piston. Intake and exhaust valves (16, 18), in fl...
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WO/1997/007328A1 |
The present invention relates to components of internal combustion engines and, more particularly, to an all ceramic cylinder head (10) or a fiber reinforced ceramic matrix composite liner (11) for internal combustion engine. The present...
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WO/1997/006360A1 |
An internal combustion engine comprises one or more pairs of first and second cylinders (12, 14), the first cylinder (12) having a larger swept volume than the second cylinder (14) and respective first and second pistons (16, 18) recipro...
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WO/1996/036798A1 |
The internal-combustion piston engine requires a cooling system to extract and waste internally absorbed heat to avoid preignition, detonation, lower volumetric efficiency and expending extra energy to compress a charge that is being hea...
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WO/1996/036800A1 |
The efficiency of a vehicle having a body and a reciprocating piston four-stroke internal combustion engine is increased substantially by greatly reducing the size of the engine relative to the weight of the body. The great reduction in ...
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WO/1996/035865A1 |
An internal combustion engine has a rotatable work shaft (13), a crank (37) connected with the work shaft (13), a plurality of cylinders (1, 5) having working chambers (38, 39), a plurality of pistons (2, 6) movable in the cylinders, and...
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WO/1996/034190A1 |
The present application relates to a method of operating an internal combustion engine during combustion process that makes it possible to brake the increase of the gas pressure at the beginning of combustion, and partially to replace it...
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WO/1996/028652A1 |
An internal combustion engine with a rearwardly shifted cylinder for increasing engine torque and power by increasing the connecting rod pivot angle 'beta' for a given crankshaft angle 'alpha', without altering coefficient 'lambda'. The ...
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WO/1996/026355A1 |
A compound engine (10) that includes a gas turbine unit (36) and a piston unit (12) wherein the cycle air for the piston unit is diverted through cooling passages (152, 158, 168, 174, 178, 184, 196, 210, 220, 228) to provide impingement ...
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WO/1996/019652A1 |
A Stirling engine is provided for driving a load through a set of Class 1 elliptical gears of the first type. This load may be, among others, an automobile, a fixed power station, a lawn mower, a boat, etc. In another aspect of the discl...
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