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WO/1998/004813A1 |
An outlet valve for combustion engines with a stem (2), a valve plate (4) with a seat (8) which divides the surface of the plate into a first and a second surface section (10, 12 resp.) which are located on the side of the plate (4) whic...
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WO/1998/002644A1 |
The present invention is for the kind of power machines, engines or compressors which have two or more pistons which work against each other, preferably with a common combustion or compression chamber in a stationary cylinder and where t...
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WO/1998/002653A1 |
The invention is concerned with a method of deriving mechanical work from a combustion gas in internal combustion engines and reciprocating internal combustion engines (100) for carrying out the method. In its preferred embodiments, the ...
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WO/1997/047862A1 |
An exhaust valve for an internal combustion engine comprises a movable spindle with a valve disc which on its upper surface has an annular seat are of a material different from the base material of the valve disc. In the closed position ...
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WO/1997/047861A1 |
An exhaust valve for an internal combustion engine comprises a movable spindle with a valve disc of a nickel-based alloy which also constitutes an annular seat area at the upper surface of the valve disc. The seat area abuts a correspond...
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WO/1997/043525A1 |
A movable wall member in the form of an exhaust valve spindle (1) or a piston (7) in an internal combustion engine is on the side of the wall member facing a combustion chamber provided with a hot-corrosion-resistant material (5, 14) mad...
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WO/1997/042402A1 |
In a technology in which a spark plug also serves as an engine valve, a construction in which a spark plug and an engine valve that are formed separately from each other are assembled together and a need of paying attention to the diamet...
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WO/1997/041346A1 |
The invention relates to a device for the supply of additional air in a combustion engine (1) equipped with at least one cylinder (3), comprising an inlet (11, 23) for the addition of ordinary air to said cylinder (3), a tank (15) for st...
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WO/1997/040262A1 |
An outwardly opening valve system (10, 50) for an engine includes an engine (16, 55) having a hollow piston cylinder (17, 56) in fluid communication with a gas passageway (19, 60) via an opening (18, 58). The engine (16, 55) also has a p...
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WO/1997/040263A1 |
A push-pull valve assembly (10, 50) for an engine cylinder includes an engine (12, 52) defining a gas passageway (14, 54) in fluid communication with a hollow piston cylinder (13, 53) via a first opening (15, 55) and a second opening (16...
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WO/1997/037107A1 |
The description relates to a process for producing cylinder heads for internal combustion engines by pouring the liquid cylinder head material, especially aluminium, into a cylinder head mould containing a mould core (2) having stepped s...
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WO/1997/034077A1 |
A carbon fiber reinforced carbon composite valve for internal combustion engines and the like formed of continuous carbon fibers (16) throughout the valve's stem (11) and head (13). The valve includes braided carbon fiber material (16) o...
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WO/1997/033829A1 |
A carbon fiber reinforced carbon composite valve for internal combustion engines and the like formed of continuous carbon fibers (15) throughout the valve's stem (11) and head (13) is disclosed. The valve includes braided carbon fiber ma...
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WO/1997/030303A1 |
A stem seal having first and second wiping members (30, 32) circumjacent a stem is disposed within a bore. A lubricant-bearing ring (40) is disposed about the stem within the bore between the wiping members, under compression therefrom. ...
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WO/1997/012132A1 |
An internal combustion engine is disclosed having a block (20) including a piston cylinder with a reciprocal piston (150) therein. A cylinder head (30) is secured to the block (20) and serves as a closure for the compression end of the c...
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WO/1997/010417A1 |
An internal combustion engine includes a cylinder (10), a crankcase (30), a crankshaft rotatable in the crankcase, a piston, and a connecting rod supporting the piston for reciprocating movement in the cylinder (10) and mounted on the cr...
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WO/1997/009516A1 |
Pneumatic valve spring members (10) provide replacement for mechanical springs used to seat engine valves in internal-combustion engines. A valve guide (16) sits atop the engine head (40), allowing the valve stem (12) of valve (14) to pa...
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WO/1997/009517A1 |
A hydraulic valve member (10) substitutes for valve springs and provides static pressure to bias closed combustion-chamber valves. A valve (18) with the valve stem (16) is guided within a valve cylinder (12). The valve cylinder (12) has ...
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WO/1997/002417A1 |
The invention relates to a cylinder head device (2) for an internal combustion engine with at least one cylinder (4). The cylinder head has for each cylinder an inlet channel (6) with an inlet valve (7), and an exhaust channel (8) with a...
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WO/1997/000375A1 |
The subject invention refers to a valve spring arrangement for internal combustion engines. In these are included a cylinder body (1, 2), one in this oscillating piston (3), which together with the cylinder body form a combustion chamber...
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WO/1996/034184A1 |
An aspirating thermodynamic valve capable of controlling the flow of fuel mixture and air from the carburettor to the crankcase of a two-stroke engine comprises a hollow body (4) placed between the joint (1) of the crankcase and the join...
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WO/1996/024762A1 |
The invention relates to a device in a cylinder head for a combustion engine. The cylinder head (1) has at least one inlet and one outlet channel (9) each with an inlet or outlet valve (8), respectively, for controlling the communication...
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WO/1996/021804A1 |
This invention is one of a reciprocating internal-combustion engines. Because former engines have the maximum pressure of combustion when piston and crank arm are on a straight line, it gives only large mechanical stress on the engine, a...
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WO/1996/020333A1 |
Object: to provide a part having a plurality of abrasion resistant sliding surfaces including engine parts, such as a tappet and a rocker arm, and a bearing. Constitution: a sliding part having a part body (3) of steel and a member (A), ...
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WO/1996/018747A1 |
In an internal combustion engine, a cylinder member, such as a valve, a seat portion, a piston or a cylinder liner, is provided with a welded high-temperature corrosion-resistant facing alloy. The hardness of the welded alloy has been in...
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WO/1996/012096A1 |
An internal combustion engine (1) comprising at least two cylinders (4, 8) meeting to form a combustion space (12) therebetween, a first piston (3) adapted to reciprocate within the first cylinder (4) and a second piston (7) adapted to r...
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WO/1996/005414A1 |
A titanium engine valve (10) is fabricated with discrete head (10) and stem portions (15), preferably joined by inertia welding and/or diffusion bonding. The joint (32) between the head and stem portions is located well up on the valve s...
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WO/1995/032360A1 |
A process allows waste heat from an internal combustion engine to be recovered. At least part of the thermal energy contained in the exhaust fumes from a first stroke and in the engine block are used to evaporate a liquid injected into t...
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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/1995/027127A1 |
Ceramic-metal composites are used in the fabrication of components for engines, particularly internal combustion engines. The components are made by infiltrating a molten metal (245) into a porous ceramic matrix (235) and cooling the met...
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WO/1995/026421A1 |
There is described a method of making a sintered article, the method comprising the steps of mixing a prealloyed ferrous powder having a composition in the following ranges in weight %: carbon 0.7-2.7/ chromium 3-6/ cobalt 5-10/ vanadium...
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WO/1995/022688A1 |
A device is described for delivering mixture or air to at least one cylinder of an internal combustion engine. The device comprises at least one delivery duct (10) opening out into the cylinder (12) and a controllable arrangement (16) fo...
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WO/1995/012059A1 |
In a known manner, such a system comprises a piston (4) integral with the stem (3) of a valve (1) and sliding in a cylinder (5), the piston (4), the valve stem (3) and the cylinder (5) defining a chamber (6) which contains a compressible...
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WO/1995/012058A1 |
The invention relates to a head (1) of cylinder (2) for a four stroke combustion engine with a valve gear with lifting valves. The head (1) of each cylinder (2) is provided with one main conduit (3), annular shaped orifice (4) leading in...
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WO/1995/008057A1 |
An internal combustion engine (1) having a cylinder block (2) with cylinders (40) with valves (5a, 5b, 6a, 6b) arranged in the roof of the combustion chamber, and piston (4) reciprocable within a liner (19) in the cylinder. The cylinder ...
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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/1994/027767A1 |
A two layer valve seat insert and a method for its manufacture is described. The method comprises the steps of preparing two powder mixtures; a first powder mixture for forming the valve seat face layer; a second powder mixture for formi...
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WO/1994/020734A1 |
A self-locking valve spring retainer (30) operatively retaining a return spring (28) on the stem (20) of a poppet valve (16) comprises an annular base ring (48) from which three flexible arms (52) upwardly extend. A locking step (66) pro...
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WO/1994/019143A1 |
A valve and method of making a valve for an internal combustion engine includes centerless grinding or screw machining a valve (50) stem, providing a head (60) having a combustion exposure surface and a backing (64), and press fitting th...
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WO/1994/018437A1 |
A spring assembly (32) for positively urging inlet and exhaust valves (10) of an internal combustion engine into both open and closed positions wherein the spring assembly (32) includes an engaging member (38) which is biased alternative...
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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/1994/004798A1 |
The method of facilitating assembly and disassembly of valves in a cylinder head uses a gripping tool (1) which has a base consisting of a flat ring (2) onto which are mounted three posts (4, 6, 8) extending upwardly therefrom. Rotatable...
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WO/1994/003721A2 |
An electromagnetic fuel injector (30) has a tubular non-magnetic body (32) defined by radially inner and outer side walls (34, 36) bounding an annular shaped interior which contains a tubular solenoid coil (54) and an annular valve eleme...
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WO/1994/002656A1 |
A titanium alloy bar which is excellent in the dimensional and configurational precision in manufacturing an engine valve and in the wearproofing treatment comprising the oxidation or nitridation of the surface, thus being suitable for m...
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WO/1994/002717A1 |
An exhaust valve assembly (30) selectively covers an exhaust manifold (42) circumferentially located about a top wall of a cylinder (20) without interfering with segments of a piston (21). The exhaust valve assembly includes a ring-shape...
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WO/1993/021437A1 |
The present invention relates to an improved fluid vaporizer for use in conjunction with an internal combustion engine comprising intake (18) and exhaust (120) valves, each of the valves including seats (148, 132). An exhaust valve seat ...
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WO/1993/018282A1 |
The invention concerns a ceramic valve for internal combustion engines whose spring retainer is frictionally linked to the valve stem, and whose cylindrical valve stem (2) is surrounded by a collet (3) having a conical outer profile (4)....
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WO/1993/016276A1 |
A method of operating an automotive type internal combustion engine to improve the efficiency and power, fuel economy, and emission control is obtained by phase shifting of both the intake and exhaust valve timing schedules or events, co...
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WO/1993/005281A1 |
A self-locking valve spring retainer (30) operatively retaining a return spring (28) on the stem (20) of a poppet valve (16) comprises an annular base ring (48) from which three flexible arms (52) upwardly extend. A pair of axially space...
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WO/1993/001398A1 |
Reed valves with constrained opening for two cycle engine. A control mechanism for inlet valves on internal combustion engines with the kind of intake which can be used on two cycle engines. The motion on valve blades is controlled by ca...
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