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WO/1998/013593A1 |
A low emission power generating apparatus which comprises a modified two-stroke diesel engine component (12) and modified turbocharger component (14) which has a relatively low aspect ratio. The diesel engine component (12) is a modifica...
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WO/1998/009060A1 |
A liquid gas engine has at least one combustion chamber (4) into which a liquid gas/air mixture is introduced and ignited. The liquid gas motor has an injection device (1) which injects liquid gas through an injection nozzle (2). Accordi...
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WO/1998/004829A1 |
A two cycle internal combustion engine is provided having a decompression slot (56) in order to ease engine starting. The engine utilizes a transfer port induction system in which a transfer port (40) is formed in the wall of the cylinde...
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WO/1998/003050A2 |
The present invention pertains to the field of two-strokes internal combustion engines with slot-type blow-off. At the beginning of the outlet stroke, the exhaust gases are expelled from the engine cylinder (4) through inlet/outlet windo...
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WO/1998/002651A1 |
The present invention relates to the operation processes of two-stroke engines. A two-stroke engine uses a slide valve (10) so that the inlet-outlet channel (9) connected to the exhaust manifold (18) may be connected to the inlet pipe af...
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WO/1998/001655A1 |
The object of the invention is to provide a mixture-compressing two-stroke spark ignition engine in which fuel is injected into the cylinder chamber, wherein a homogeneous mixture is allowed to form in particular. To that end, the combus...
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WO/1997/039230A2 |
The air and exhaust gas management (scavenging) system for a two-cycle internal combustion engine allows the engine to perform comparably to similar four-cycle engines, while remaining lighter, simpler and more cost-effective than its fo...
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WO/1997/038213A1 |
An internal combustion engine comprising a cylinder block with a cylinder including a cylindrical wall having an axis and opposite inlet and outlet ports, a cylinder head fixed to the cylinder block and including a recess (45), a spark p...
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WO/1997/038217A1 |
The invention refers to a cylinder (1) for a two-stroke internal combustion engine intended for a hand-held working tool, preferably a chain saw, and the exhaust duct (2) and transfer ducts (3, 4) of the cylinder are symmetrically arrang...
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WO/1997/027409A1 |
A two stroke reciprocatory machine comprising at least one piston (10) reciprocal in a cylinder (11) and drivingly connected by a connecting rod (12) to a crankshaft (14), two camshafts (18, 21) to operate inlet and outlet valves (17, 20...
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WO/1997/013970A1 |
A two-cycle turbocharged diesel engine. The engine includes one or more cylinder sleeves (12) mounted within a block (22). A cylinder head (30) encloses and seals the top of the cylinder sleeves (12) and pistons (14) are reciprocally mou...
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WO/1996/024757A1 |
A two-stroke diesel engine with a spiral air intake duct, comprising an air intake duct (1) arranged over a large part of the wall circumference of a cylinder (2) at the bottom dead centre of a piston (9). The air intake duct (1) is conn...
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WO/1996/011333A1 |
Pneumatically-controlled fuel injection in a two-stroke engine comprising at least one cylinder (1) with a piston (2) delimiting a combustion chamber (14) and a pump housing (5) located in the extension of the combustion chamber and sepa...
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WO/1996/005426A1 |
In a two-stroke engine with ports controlled by the piston and with the air charge or a lean fuel-air mixture precompressed in the crankcase (11), the cylinder space is fed with a jet of rich fuel-exhaust gas mixture from the feed chambe...
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WO/1996/002744A1 |
The proposed two-stroke internal combustion engine comprises a cylinder with a piston and an aperture to accommodate the intake valve through which the fuel/air mixture passes from the intake manifold into the suction chamber. The suctio...
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WO/1995/033130A1 |
The invention concerns a two-stroke internal-combustion engine with a charging pump, an outlet channel (18) controlled by the main piston (3) being subjected to additional control by the charging-pump plunger (4). Circulation losses are ...
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WO/1995/031634A1 |
According to the invention, the valve comprises a cylindrical body (21) in a housing (21), for receiving one end of a return spring while the end is in contact with the case. The valve also includes two ribs (22, 23) for connection to a ...
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WO/1995/027129A1 |
A twin-piston engine (1), i.e., a crankcase scavenged two-stroke internal combustion engine comprising two pistons (2, 3) travelling in essentially the same direction, and wherein one (4) of the cylinder bores, the exhaust bore (4), cont...
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WO/1995/024547A1 |
An internal combustion engine comprises a cylinder assembly including a cylinder (4), at least one piston (8) mounted for reciprocation within the cylinder (4), a common compression chamber (6) defined by the cylinder (4) and piston(s) (...
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WO/1995/016113A1 |
The invention relates to a two-stroke internal combustion engine and a process for operating such an engine which comprises at least one cylinder (10) containing a reciprocating piston (20) and at least one inlet (40) and exhaust (70) pa...
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WO/1995/008052A1 |
Internal combustion engine comprising a cylindrical work chamber (1) with a piston (3) sliding therein, said work chamber being closed by a cylinder head (4), a device (5) operating in two stroke mode, for injecting liquid fuel atomized ...
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WO/1995/004212A1 |
A fuel-air mixture feed device for a two-stroke internal combustion engine with compressed air scavenging in the crankcase (5). The device includes at least one cylinder (1), a piston (9) reciprocating therein, and a scavenging air compr...
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WO/1995/001503A1 |
A method of operating a two-stroke cycle internal combustion engine having at least one exhaust port communicating with each combustion chamber of the engine and an exhaust valve operably associated with at least one said exhaust port to...
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WO/1995/001504A1 |
A method of operating a two-stroke cycle internal combustion engine having at least one exhaust port communicating with each combustion chamber of the engine and an exhaust valve operably associated with at least one said exhaust port to...
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WO/1994/027037A1 |
A multi-cylinder reciprocating piston internal combustion engine, preferably operating on the two-stroke cycle, having a cylinder block (8) incorporating a bank of cylinders (10) each communicating with a crankcase (15). Each cylinder (1...
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WO/1994/023191A1 |
A two-cycle internal combustion engine configuration and control strategy in which the unburned hydrocarbon emissions in the exhaust gas are measured by a sensor (24) in the exhaust manifold. The information from the sensor is used to co...
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WO/1994/016254A1 |
The present invention provides improved multiple stage reed valve construction for internal combustion engines. The reed valves (10) comprise first stage reed valves (12) with multiple ports (16) in the first stage reed valve (12). Beams...
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WO/1994/013936A1 |
In a V-engine a reactor (24; 24') for reducing the content of undesired compounds in the exhaust gas, such as NOx, is disposed between the two rows of cylinders (4). With this positioning the reactor does not occupy space in the engine r...
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WO/1994/001663A1 |
A two-stroke internal combustion engine cylinder feeding device and method, wherein said cylinder comprises a fresh gas feed duct acting as a seat for counter-scavenging by the exhaust gas. Penetration of counter-scavenging exhaust gas i...
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WO/1993/022549A1 |
Fresh air fed into the working chamber (1) of an engine is centrifugally prevented from mixing with the combustion gases deliberately retained therein from one cycle to the next. An assembly for feeding in pressurized fuel (10) is arrang...
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WO/1993/022545A1 |
The invention relates to a two-stroke internal combustion engine, which comprises a cylinder (2) exhibiting an internal cavity (2') of substantially cylindrical shape, a reciprocating piston (3) accomodated slidably and coaxially within ...
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WO/1993/016274A1 |
A reciprocating engine in which a piston is divided into a piston main body portion and a piston upper portion and in which exhaust of waste gas and suction of fuel is carried out while the piston upper portion reciprocates faster than t...
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WO/1993/006348A1 |
A two stroke internal combustion engine comprises a piston (8) reciprocating in compression chamber (6), an inlet valve (5) permitting the supply of scavenging air at high pressure to compression chamber (6), a small external combustion ...
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WO/1993/001402A1 |
A two stroke cycle engine cylinder block (9) has exhaust ports (14) controlled by power valves (not shown) which rotate on an axis extending longitudinally of the block (9). Along this axis the block (9) has a plurality of aligned recess...
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WO/1992/021868A1 |
In a two-stroke engine with a piston (1) movable in a cylinder (2) and a cylinder head (4) fitted thereto and channels (18) in the cylinder which can be opened by upper edge of the piston, the latter being connected to a crankshaft (11) ...
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WO/1992/017693A1 |
The subject engine (8) includes a low pressure piston assembly reciprocally disposed in an operating chamber (22) defined in a housing (10). A pair of opposed high pressure piston assemblies (58) and (60) are directly mounted on a pair o...
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WO/1992/016726A1 |
A multicylinder two-stroke cycle internal combustion engine (10) comprises an individual crankcase cavity (18) for each cylinder to receive the incoming air charge for that cylinder and a cylinder block (11) with at least two cylinders h...
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WO/1991/019889A1 |
The invention relates to an internal combustion engine having, a working cylinder (6), means for supplying gas under pressure (8), means for supplying a gas and fuel mixture (8, 9, 34) exhaust valve means (28) and inlet valve means (1, 2...
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WO/1991/017348A1 |
The present invention provides, an internal combustion engine comprising at least one piston (19) reciprocating with a cylinder (20) and having an exhaust port (23) allowing communication of the cylinder (20) with an exhaust passage. Mov...
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WO/1991/012419A1 |
In an engine with Diesel-type compression ignition, the exhaust valve(s) (10) are designed so that the flow is directed past at least the major part of its/their periphery, the piston (3) co-operates with the top of the cylinder head (6)...
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WO/1991/006751A1 |
A compression ignition, internal combustion engine has at least one pair of pistons (13, 14) operating in separate cylinders (11a, 12a) interconnected through a transfer port (19). Said at least one pair of pistons (13, 14) includes a le...
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WO/1991/002144A1 |
This invention relates to a two stroke spark ignition engine having improved fuel and lubricant efficiencies achieved by decreased consumption of fuel and lubricant. The flow of air toward the cylinder (15) for combustion in the engine i...
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WO/1991/000684A1 |
A cylinder construction for an internal-combustion two-stroke engine, having multiple intake ports (8), multiple intake valve ports (11) and multiple exhaust ports (3). The cylinder enables a two-stroke engine to run on gasoline without ...
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WO/1990/015230A1 |
An internal combustion engine comprises a cylinder of stepped configuration having a working portion (21) and a pumping portion (22) and a piston of stepped configuration having a working portion (31) and a pumping portion (32), the work...
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WO/1990/011436A1 |
A stepped piston engine comprises first (10), second (11) and third (12) stepped cylinders, each cylinder (10, 11, 12) having a larger diameter pumping part (10p, 11p, 12p), and a smaller diameter working part (10w, 11w, 12w), and a pist...
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WO/1990/010145A1 |
A multi-cylinder two-stroke cycle engine having a plurality of cylinders (1, 2, 3) arranged in line with each cylinder having at least two inlet ports one on each of the two opposite longitudinal sides of the in-line cylinders (1, 2, 3)....
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WO/1990/008884A1 |
A cylinder (10) and piston (5) assembly for a two-stroke cycle internal combustion engine has a passageway (2) the opening of which is controlled by suitable valve means (1, 9) to communicate a pump casing (3) with an exhaust zone (4) of...
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WO/1990/002253A1 |
In a two-stroke engine a sleeve-like extension (B) of the piston crown reciprocates into and out of a matching recess (D) in the cylinder head (C) in a manner analogous to a reciprocating sleeve valve. Approaching bottom-dead-centre the ...
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WO/1990/000673A1 |
Shroud for covering the space between cylinder rows of a V-shaped internal combustion engine (1) for enclosing in a gas-tight manner the pressure tube (5) arranged in the area between the rows of cylinders as well as the exhaust gas pipe...
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WO/1990/000222A1 |
A two-cycle internal combustion engine provided with a mask wall (8a, 40b), which is formed between a suction valve (6) and an exhaust valve (7) which are arranged above an inner surface (3a) of a cylinder head, and which is adapted to c...
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