Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7581526 | Device and method to increase fuel burn efficiency in internal combustion engines A reciprocating piston engine wherein the movement of a piston within the combustion chamber creates vortices in the fluid within the chamber and wherein the orientation of the vortices is more normal to the axis of movement of the piston than parallel to the axis o... | 09/01/2009 |
| 7438044 | Light-weight compact diesel engine Disclosed is a diesel engine comprising a cylinder head; a combustion chamber within the cylinder head, the combustion chamber being in the shape of a bowl; and a piston having a piston crown, the piston crown having a dome-shape for protruding within the cylinder h... | 10/21/2008 |
| 7284524 | Cylinder head assemblies Cylinder head assemblies including a cylinder head and a piston are disclosed. The cylinder head includes: a recessed valve region including a first and second bulbous portion connected by a waist, the first bulbous portion accommodating an intake valve and the seco... | 10/23/2007 |
| 7185614 | Double bowl piston A piston for an internal combustion engine is disclosed. The piston has a piston crown with a face having an interior annular edge. The piston also has first piston bowl recessed within the face of the piston crown. The first piston bowl has a bottom surface and an ... | 03/06/2007 |
| 7152572 | Internal combustion engine A high thermal efficiency lean-burn spark-ignition two or four stroke engine operable unthrottled suitable for vehicles using gasoline. It uses an indirect combustion chamber and a transfer orifice aligned to produce a jet of air moving in helical swirl motion aroun... | 12/26/2006 |
| 7073478 | Internal combustion engine with auto-ignition In an internal combustion engine with auto-ignition in which the fuel is injected directly into the combustion chamber by means of a fuel injection nozzle in the form of multiple fuel jets, wetting of the combustion chamber-side cylinder head surface is minimized by... | 07/11/2006 |
| 7025036 | Valve controlled divided chamber internal combustion engine An engine has a plurality of combustion chambers, each of which is divided into an ignition chamber and a first combustion chamber. The chambers are linked by a transfer tube defining a passageway facilitating communication between the ignition chamber and the first... | 04/11/2006 |
| 6981484 | Internal combustion engine with divided combustion chamber An internal combustion engine 10 includes a first combustion chamber (20) in each of its cylinders (12). First fuel injector (24) injects a first volume of fuel into the chamber (20). A housing (28) defining an auxiliary com... | 01/03/2006 |
| 6513487 | Method for operating a reciprocating-piston internal combustion engine A method for operating a reciprocating-piston internal combustion engine, having an injector nozzle operable by a single valve element and configured to directly inject a fuel into a combustion chamber and having a piston including a piston crown and a pi... | 02/04/2003 |
| 6098588 | Injection device and combustion process for an internal combustion engine An injection device for an internal combustion engine, especially a diesel engine, with a combustion chamber (16) for each defined by piston (2), cylinder and cylinder head (1), a multi-hole injection nozzle (5) and a shroud (3) projecting from the cylind... | 08/08/2000 |
| 6065441 | Divided chamber diesel combustion system A combustion system for a divided chamber engine that incorporates a pre-combustion chamber disposed to one side of the cylinder and that communicates with the main combustion chamber through two diverging transfer passages the open ends of which are aime... | 05/23/2000 |
| 6003487 | Internal combustion engine An internal combustion engine comprises one or more pairs of first and second cylinders, the first cylinder having a larger swept volume than the second cylinder and respective first and second pistons reciprocable in the cylinders. The second piston has ... | 12/21/1999 |
| 5738057 | Low profile internal combustion engine An internal combustion engine of the valve-in-head type having a low profile cylinder head which requires minimal head-room in the engine compartment of an automotive vehicle. The cylinder head has a rectilinear configuration with the valve trains dispose... | 04/14/1998 |
| 5447130 | Thermally insulating engine The present invention integrates the combustors and the air intake/exhaust passages in a thermally insulating engine into an assembly to simplify the structure and to space the parts thereof. The space between the subcombustion chamber and the main combus... | 09/05/1995 |
| 5417189 | High speed indirect injection diesel engine A diesel engine (10) has a pre-combustion chamber (30) with an angled and tapered transfer passage (60) leading to the main combustion chamber (44). The transfer passage (60) is tapered to provide a larger lower end (62) facing the main chamber (44) and s... | 05/23/1995 |
| 5392744 | Precombustion chamber for a double overhead camshaft internal combustion engine A diesel engine (10) has a precombustion chamber (30) with four circumferentially spaced and angled transfer passages (60, 61) leading to the main combustion chamber (44). Each transfer passage (60, 61) is tapered to provide a larger lower end (62) facing... | 02/28/1995 |
| 5277159 | Two stroke diesel engine A piston and cylinder arrangment for an internal combustion engine designed to run on diesel and similar fuels, comprises a cylinder defining a main combustion chamber, a piston reciprocatable within said cylinder and having a thermally insulating plate o... | 01/11/1994 |
| 5239959 | Isolated combustion and diluted expansion (ICADE) piston engine The "Isolated Combustion and Dilution Expansion (ICADE) Engine", is a piston/cylinder arrangement used primarily for the compression of air and the expansion of diluted hot combustion products. Fuel injection and rapid combustion take place inside a separ... | 08/31/1993 |
| 5067457 | Swirl chamber type diesel engine A piston crown is formed with a cavity including a first flame deflecting member which is located amid three flame dispersion zones and which splits burning gases ejected from a transfer port into a first dispersion zone, while the piston is proximate its... | 11/26/1991 |
| 5060609 | Internal combustion engine An internal combustion engine has first and second cylinders (12, 14), the first cylinder (12) having a larger swept volume than the second cylinder (14) and the second cylinder being formed in the crown of the first cylinder. First and second pistons (16... | 10/29/1991 |
| 5024194 | Flame dispersion arrangement for swirl chamber type diesel engine piston crown Wall surfaces which define essentially circular recesses are constructed to deflect the flow of burning gases from a swirl chamber in a manner to either tighten the swirl formed therein or to improve the initial splitting of the frame in a manner which in... | 06/18/1991 |
| 4977874 | Combustion chamber A combustion chamber formed in the crown of a piston for an indirect injection diessel engine is described the combustion chamber having an elongate entry channel adjacent the gas efflux of a precombustion chamber, the channel leading into four branches w... | 12/18/1990 |
| 4962736 | Diesel engine A combustion chamber and method of operating a diesel engine to insure maximum air utilization. The engine has a main chamber and a subchamber that communicates with the main chamber through a communication passageway. Fuel injection into the subchamber i... | 10/16/1990 |
| 4898136 | Mixture-compressing internal-combustion engine with a main combustion chamber and an auxiliary combustion chamber The subject of the invention is a mixture-compressing spark-ignition internal-combustion engine with a main combustion chamber and an auxiliary combustion chamber in the cylinder head. The auxiliary combustion chamber has a spark plug and is connected to ... | 02/06/1990 |
| 4785776 | Diesel engine having shaped flame dispersing recess in piston crown A piston crown is formed with cavity a which includes a first flame deflecting member which divides the flame ejected from a transfer port interconnecting a swirl chamber with a main combustion chamber while the piston is relatively close to its TDC posit... | 11/22/1988 |
| 4719884 | Combustion chamber with a domed auxiliary chamber for a spark-ignition engine The present invention relates the technology to enhance the mixing performance of air-fuel mixture in a combustion chamber with a domed precombustion chamber for a spark-ignition engine, and aims to attain the enhanced mixing performance owing to the forc... | 01/19/1988 |
| 4693218 | Internal combustion engine An internal combustion engine having a main combustion chamber in a top portion of a piston, and an ignition chamber which is provided with a fuel injection valve and an ignition plug, in a cylinder head, the direction in which fuel is ejected from the fu... | 09/15/1987 |
| 4676209 | Transfer passage arrangement for diesel engine having swirl chamber In order to avoid the formation of smoke and HC when the compression ratio of a swirl chamber type Diesel engine is lowered either by design or by operation in rarified atmospheres, the fuel injector is located on one side of the center axis of the swirl ... | 06/30/1987 |
| 4662330 | Diesel engine having swirl chamber and shaped flame dispersing recess in piston crown In order to promote a good flame dispersion within the combustion chamber of a swirl chamber type Diesel engine, a shaped recess formed in the piston crown is arranged to have a trench portion into which the flame from the swirl chamber is injected and mi... | 05/05/1987 |
| 4619229 | Structure for combustion chamber of auxiliary chamber type internal combustion engine An auxiliary chamber injection port providing communication between a main combustion chamber and an auxiliary combustion chamber has its axis composed of a combination of a straight line and an arc in a manner to satisfy the following relationships: θ | 10/28/1986 |
| 4489687 | Piston having fuel diverting barrier means Heat plugs made of durable, heat resistant material are useful for protecting aluminum pistons from the jet flame of burning fuel emitted from the precombustion chamber of some compression ignition engines. However, when slower burning fuel such as vegeta... | 12/25/1984 |
| 4483289 | Synthesis procedure and combustion chamber with variable turbulence The combustion structure of an internal combustion engine comprises a cavity formed in the end wall of the piston and a projection on said piston adjacent its cavity to that the projection in the injection, ignition and combustion phase of the cycle only ... | 11/20/1984 |
| 4434758 | Diesel engine In a turbulence chamber diesel engine, fuel consumption, smoke and noise are reduced by a transfer port arrangement having a plano-convex lens-like cross section with rounded off edges in which a convex side is disposed inwardly toward the cylinder axis a... | 03/06/1984 |
| 4398513 | Internal combustion engine An internal combustion engine according to the present invention includes a piston reciprocally movable within a cylinder for affording rotational motions to a crankshaft, a combustion chamber formed among the piston, the cylinder and a cylinder head, an ... | 08/16/1983 |
| 4359027 | Two-cycle internal combustion engine having high swirl combustion chamber Disclosed is a two-cycle, internal combustion engine including an engine block, and a cylinder in the engine block having a head and generally opposed inlet and outlet walls respectively including at least one intake port through which a fresh charge is a... | 11/16/1982 |
| 4347815 | Air-compressing internal combustion engine with a precombustion chamber An air-compressing internal combustion engine which includes a cylinder block, a plurality of cylinders in the cylinder block, a piston reciprocably mounted in the respective cylinders, and a cylinder head disposed on the cylinder block. A precombustion c... | 09/07/1982 |
| 4303045 | Apparatus to convert Otto cycle engine to diesel engine A system for converting a spark ignition Otto cycle engine into a compression ignition or Diesel cycle engine comprises: (a) compression means connected to the engine piston end portion closest the combustion zone to effect an increase in heating and pressuriz... | 12/01/1981 |
| 4294209 | Internal combustion engine An internal combustion engine operating with self-ignition which is equipped with a main combustion space including a piston recess and with an auxiliary chamber arranged in the cylinder head an injection nozzle is coordinated to the auxiliary chamber whi... | 10/13/1981 |
| 4292937 | Piston for internal combustion engines A piston for internal combustion engines, especially for motors of the Diesel type. On purpose to reduce the heat diffusion from the piston crown to the piston portion where are fitted the sealing piston rings, provision is made of an internal circular gr... | 10/06/1981 |
| 4254750 | Internal combustion engine with an auxiliary combustion chamber Disclosed is an internal combustion engine comprising a main combustion chamber and an auxiliary combustion chamber interconnected by two connecting passages with each other. A raised portion having a flat lower end face is formed on the inner wall of the... | 03/10/1981 |
