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| Number | Title | Issue Date |
| 7182056 | Inverted poppet valve for internal combustion engine A poppet valve for use in an internal combustion engine. The poppet has a partially-inverted perimeter shape which nevertheless substantially maintains the curtain area of the valve. These improved valves pack more efficiently into the combustion chamber roof area t... | 02/27/2007 |
| 7112220 | Valve There is disclosed a heart valve prosthesis having a configuration such that blood flow through it has a helical flow pattern such as to substantially reduce or eliminate turbulence and dead flow regions in the blood flow. ... | 09/26/2006 |
| 6886548 | Internal combustion engine An internal combustion engine having a cylinder and a piston movable in the cylinder, the cylinder and piston defining a combustion chamber enclosed by the cylinder and the piston, a surface of at least one of at least one component of the combustion chamber and an ... | 05/03/2005 |
| 6863049 | Auxiliary valve for the intake passageway of an internal combustion engine An auxiliary valve positioned in an intake passageway of a four-cycle internal combustion engine for controlling the flow of air/fuel mixture into a combustion chamber includes a through passage, the through passage defined by a top wall, a bottom wall, and opposing... | 03/08/2005 |
| 5771852 | Poppet valve with embossed neck structure A poppet valve (10) has a disk-shaped head (12), an elongated stem (16), and a tapered neck (24) between the head (12) and the stem (16). The neck (24) has an outer surface (32) with an undulating circumferential contour. The undulating circumferential co... | 06/30/1998 |
| 5709183 | Shroud and combustion chamber for an internal combustion engine The present invention provides an internal combustion engine combustion chamber with at least one shrouded exhaust valve. The combustion chamber is partially defined by a cylinder head having an exhaust port and a throat opening to the combustion chamber ... | 01/20/1998 |
| 5617835 | Inlet valve for a combustion space of an internal combustion engine In known inlet valves, condensation of the fuel, which is precipitated in the form of a wall film, occurs at the inlet valve, in particular when the internal combustion engine is in the cold state. Relatively large fuel droplets, which cause an increase i... | 04/08/1997 |
| 5529036 | Rotatable shrouded valve for improving a scavenging of 2-stroke engine This invention relates to a scavenging shroud mechanism for improving scavenging of a 2-stroke engine, and more particularly to a scavenging shroud mechanism for improving scavenging of a 2-stroke engine which is constructed such that a scavenging shroud ... | 06/25/1996 |
| 5485815 | Poppet valve device A poppet valve comprises a valve stem and a valve head which is provided at one end of the valve stem. A plurality of arcuate fins are provided on the surface of the valve head. Two semicylindrical cotters are pushed by a press member, so that the valve i... | 01/23/1996 |
| 5370098 | Air intake system for gas fueled engine A number of embodiments of gaseous fueled internal combustion engines having induction systems that include charging augmentation means for altering the charging character of the induction system into the combustion chamber. In some embodiments this charg... | 12/06/1994 |
| 5301640 | Engine valve An engine valve includes a valve head having a helical top wall arranged to enhance turbulence in an associated combustion chamber of an internal combustion engine to enhance mixing and effective efficiency during the combustion procedure.... | 04/12/1994 |
| 5230310 | Combustion chamber of internal combustion engine An engine combustion chamber has a protruding wall disposed around a part of each valve seat of either an intake port or an exhaust port. The protruding wall extends in a direction in which a valve for the intake or exhaust port lifts up and down within t... | 07/27/1993 |
| 5099808 | Direct injection diesel engine induction system having vortical flow inducing induction valve An induction valve of a direct fuel injection diesel engine has helical flow director flanges formed on the upstream side for directing the inducted air into a vortical flow within the combustion chamber. The flow directing flanges are formed on the valve... | 03/31/1992 |
| 5020486 | Partitioned poppet valve mechanism seprating inlet and exhaust tracts A valve mechanism for a reciprocating piston internal combustion engine having one large poppet valve per cylinder communicating with both inlet and exhaust tracts. A partition between the inlet and exhaust tracts has gas flow ports therethrough moving in... | 06/04/1991 |
| 4829952 | Poppet valve lash cap assembly A means of providing a lash cap for the poppet valve of an internal combustion engine. The lash cap is positively retained on the distal end of the valve stem by retaining an annular projection on the lash cap within a mating cavity in otherwise conventio... | 05/16/1989 |
| 4756281 | Method, and a valving arrangement, for improving air-fuel mixing The method comprises a couple of features: (a) late closing of an air intake valve (for a cylinder) to induce a high-velocity, air injection just before closure, and (b) admitting fuel gas into the cylinder via the air intake valve. The valving arrangemen... | 07/12/1988 |
| 4744340 | Vortex generator intake valve and system of using the same An intake valve for use in an internal combustion engine has a plurality of impellers rigidly attached to its inlet side and oriented to optimize the vaporization and homogenity of fuel within the combustion chamber. The impellers harness the fuel/air mix... | 05/17/1988 |
| 4688527 | Ceramic valve guide and seat For inclusion within a cast metal cylinder head for an internal combustion engine, a ceramic valve seating and stem supporting integral device for supporting and sealingly interacting with a conventional engine poppet-type valve. The integral valve seatin... | 08/25/1987 |
| 4671218 | Two stroke engine with deflector valve Two stroke gasoline spark ignition supercharged engine wherein air scavenging takes place without loss of fuel and full charge of air and fuel at optimum combustion ratio takes place for each power stoke with flywheel smoothed interrupted fuel injection f... | 06/09/1987 |
| 4643142 | Squish control engine Squish control is provided in an internal combustion engine such as a diesel engine by providing in a preferred embodiment arcuate dams on the inner faces of rotatable intake and exhaust valves or the like which coact with arcuate grooves or recesses of t... | 02/17/1987 |
| 4574754 | Stratified charge combustion system and method for gaseous fuel internal combustion engines A stratified charge combustion system is disclosed for use in a gaseous fuel internal combustion engine. The stratified charge combustion system comprises a combustion chamber, an ignition source in communication with the combustion chamber, and a gaseous... | 03/11/1986 |
| 4539954 | Selective asymmetric swirl intake port Cylinder intake charge swirl is accentuated by selectively directing flow past swirl generating vanes in the intake port which are closest to the cylinder wall and reducing the flow past swirl generating vanes furthest from the cylinder wall. This may be ... | 09/10/1985 |
| 4432312 | Engine intake port with variable swirl vanes Adjustable swirl developing vane means are provided in the outlet end portions of the intake ports of an internal combustion engine adjacent the intake valve heads to provide variable swirl of cylinder intake charges through adjustment of the vane positio... | 02/21/1984 |
| 4428336 | Inlet valve assembly for internal combustion engines The invention provides an improved inlet valve assembly for use in internal combustion engines. Gas distribution mechanism are provided to divide the gas passing between the valve and the valve seat into a plurality of circumferentially spaced jets each h... | 01/31/1984 |
| 4424777 | Engine intake port with variable swirl vanes Adjustable swirl developing vane means are provided in the outlet end portions of the intake ports of an internal combustion engine adjacent the intake valve heads to provide variable swirl of cylinder intake charges through adjustment of the vane positio... | 01/10/1984 |
| 4362134 | Shielded valve A shielded poppet valve (10) for a diesel engine is disclosed. In one embodiment the valve includes a fillet heat shield (12) which is fixed at one end (22) to the valve stem (20) to define a thermal insulating cavity (30) open at the other end (24). Anot... | 12/07/1982 |
| 4355604 | Shrouded valve for internal combustion engine A 360° shrouded intake valve for use with an internal combustion engine having an intake valve located between a charge induction passage and a combustion chamber of the engine. The shroud is in the form of a collar secured to the intake valve face inter... | 10/26/1982 |
| 4320725 | Puffing swirler A puffing swirler for use in an internal combustion engine. The puffing swirler causes the air and vaporized fuel mixture to have a controlled high velocity swirling action within the piston cylinder of the engine to provide improved high efficiency combu... | 03/23/1982 |
| 4309969 | Induction system with high-swirl intake valve An induction system for an internal combustion engine includes an intake port in the cylinder head of the engine with this intake port having a straight cylindrical wall portion terminating at an angular valve seat and, a high-swirl intake valve cooperati... | 01/12/1982 |
| 4307687 | Internal combustion engines Each pair of piston and cylinders is twinned so that one acts as a primary or master piston and cylinder and the other as a secondary piston and cylinder. The pistons move in unison through the conventional four strokes of the Otto cycle. A transfer valve... | 12/29/1981 |
| 4290396 | Heat conducting shield for cylinder heads of internal combustion engines Heat conducting shield member for cylinder heads of internal combustion engines having at least two gas change ports with valve seat rings at their combustion chamber end, with the valve bridge portion between the valve seat rings shielded by the shield m... | 09/22/1981 |
| 4201162 | Aluminum valve spring retainer Serious racers strive to squeeze as many revolutions per minute as possible out of their engines. They often use exotic metals like titanium in efforts to minimize the weight of some reciprocating parts. Almost exclusively, serious racers use titanium val... | 05/06/1980 |
| 4180030 | Valve lock assembly A device for attaching a valve stem to a valve spring retainer. The device includes two wedge-like key members for wedgably locking the valve spring retainer to the valve stem. Each key member has a cavity for receiving a portion of a cup-shaped lash cap ... | 12/25/1979 |
| 4137886 | Air intake system for an internal combustion engine An air intake system for an internal combustion engine, particularly for a diesel engine containing a cylinder having a combustion chamber therein, is disclosed. The system comprises a spiral-shaped intake port formed in the cylinder head. The spiral-shap... | 02/06/1979 |
| 4094277 | Intake valve mechanism for preventing back flow of exhaust gas The intake valve mechanism employs a back-flow valve to prevent undesirable back-flow of gases from a combustion chamber of an internal combustion engine out an intake port of the chamber during a period of time in which a poppet valve for the intake port... | 06/13/1978 |
| 4058091 | Internal combustion engine of a lean air-fuel mixture combustion type An internal combustion engine of a lean air-fuel mixture combustion type comprising a valve guide and an intake valve supported by the valve guide. A pumping chamber is formed between the inner wall of the valve guide and the outer wall of the valve stem ... | 11/15/1977 |
| 4015577 | Reciprocable piston internal combustion engine, especially diesel engine A reciprocable piston internal combustion engine, especially diesel engine, with an air guiding passage leading to a combustion chamber for combustion air to be conveyed by the air feeding passage. The air feeding passage is provided with twist-forming el... | 04/05/1977 |
| 3995609 | Internal combustion engine fuel control arrangement An internal combustion engine having an air flow sensitive fuel sink-distribution-source arrangement that intercepts the liquid fuel film on the intake passage wall adjacent the intake port entry to the combustion chamber and accumulates this fuel on redu... | 12/07/1976 |
| 3987769 | Jet ignition engine with valve-carried ignition chamber A jet ignition internal combustion engine of the type provided with separate induction passages for lean and rich air-fuel mixtures wherein the main inlet valve mounts a cup like member forming an auxiliary ignition chamber within the main combustion cham... | 10/26/1976 |
| 3980059 | Internal combustion engine An internal combustion engine is designed to improve burning of the fuel therefor for reducing the harmful emissions in the exhaust gases thereof. An auxiliary combustion chamber is provided in the cylinder head being arranged to open toward the center of... | 09/14/1976 |
