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| Number | Title | Issue Date |
| 6941906 | Crankcase scavenged internal combustion engine A crankcase scavenged internal combustion engine includes a cylinder and a piston reciprocating along the cylinder wall. At least one auxiliary duct is arranged with an auxiliary port in the cylinder wall. An inlet is divided into: a fuel inlet leading to a fuel por... | 09/13/2005 |
| 6905315 | Valve plate in an air compressor An air compressor includes a valve plate with cooling fins and a piston also having cooling fins. The valve plate includes an integral and angled valve plate outlet. The angling of the valve plate outlet reduces turbulence and improves compressed air flow. The pump ... | 06/14/2005 |
| 6889636 | Two-cycle engine A two-stroke cycle internal combustion engine (10) has a one-piece cylinder housing (14) which is vertically aligned with a crank housing (16) and a valve housing (12) mounted at a top section of the cylinder housing. The valve housing ( | 05/10/2005 |
| 6736090 | Valve device of engine An engine valve device, wherein an opening part (7) smaller in area than the end surface of a piston (5) is provided in the end surface of a cylinder (3) to form a valve seat (8), and a valve disc (9) in contact with the valve seat... | 05/18/2004 |
| 6662763 | De' sax' e two cycle engine, constant pressure adiabatic compound "C.P.A.C." A reversible heat, constant pressure 2-cycle engine that takes ambient air and heats it up before mixing it with fuel, so that even a very lean mixture of air and fuel is highly combustible, to provide increased fuel economy and decreased fuel consumption... | 12/16/2003 |
| 6612273 | Dual-piston compression chamber for two-cycle engines A dual piston compression chamber for two-cycle engines wherein a primary piston and an exhaust/intake piston travel at different rates within a compression chamber to draw a charge through one-way intake ports and subsequently through one-way passages ex... | 09/02/2003 |
| 6581553 | Two-stroke engine In a two-stroke engine, fresh air introduced through a scavenging port into a combustion chamber becomes an air flow directed to a top surface of a piston and is guided by a concave of the piston top surface to produce an reverse tumble flow. A combustion... | 06/24/2003 |
| 6520128 | Piston valve for two-stroke engine A two-stroke engine has a piston operatively connected to a crankshaft for reciprocating motion within a cylinder. An annular piston valve is mounted for slidable motion with respect to a centrally located inner body of the piston to control a flow of cyc... | 02/18/2003 |
| 6405691 | Piston valve for two-stroke engine A two-stroke engine has a piston operatively connected to a crankshaft for reciprocating motion within a cylinder. An annular piston valve is mounted for slidable motion with respect to a centrally located inner body of the piston to control a flow of cyc... | 06/18/2002 |
| 5857435 | Two cycle engine A two stroke cycle internal combustion engine (10) is provided which has a one-piece cylinder housing (14) removably secured to a valve drive housing (12) at a top section thereof and a crank housing (16) at a bottom section. The overall combination of th... | 01/12/1999 |
| 5809949 | Two-stroke engine with improved injection device and associated injection process The present invention relates to a two-stroke engine comprising at least: a cylinder (111) in which a piston (112) moves and one end of which communicates with a pump crankcase (115) crossed through by the crankshaft (114) of the engine, a capacity under press... | 09/22/1998 |
| 5791303 | Two-cycle internal combustion engine A two-cycle internal combustion engine comprises a cylinder with a piston, the cylinder having a port in which an intake valve is placed for feeding a fuel-air mixture from an intake manifold into an intake chamber. The intake chamber is positioned under ... | 08/11/1998 |
| 5775274 | Two-stroke engine with air-blast fuel mixture injection The present invention is an air-blast fuel injection two-stroke engine comprising at least one cylinder (1) in which moves a piston (2) defining a combustion chamber (14) and a pump crankcase (5) forming a continuation of the combustion chamber and separa... | 07/07/1998 |
| 5752477 | Two-stroke engine with valve motion control means The present invention relates to a two-stroke engine comprising at least a cylinder (111) in which a piston (112) moves and one end of which communicates with a pump sump (115) crossed by the crankshaft (114) of the engine, a capacity under pressure (87) ... | 05/19/1998 |
| 5738050 | Controlled two-stroke internal combustion engine The invention concerns a two-stroke internal combustion engine and a method of operating a two-stroke internal combustion engine which includes at least one cylinder (10) with a piston (20) reciprocating therein and with at least one inlet (40) and exhaus... | 04/14/1998 |
| 5615644 | Valve arrangement in an internal combustion engine A valve arrangement in an internal combustion engine, into which engine the air-fuel mixture is directly injected by relative pumping elements from a pressure chamber towards at least one cylinder provided with a valve aperture with its relative valve loc... | 04/01/1997 |
| 5586523 | Crankcase compression type two-cycle engine The present invention provides a crankcase compression type two-cycle engine which has a comparatively simple construction, is capable of operating at a low fuel consumption and discharges an exhaust gas having a comparatively low hydrocarbon concentratio... | 12/24/1996 |
| 5490482 | Two cycle engine with piston mounted poppet valve operating mechanism A two cycle piston engine is described in which one or more intake poppet valves are carried in the top of the piston which driven onto a respective mating valve seat in the cylinder head by piston movement towards top dead center, a spring allowing retra... | 02/13/1996 |
| 5448971 | Internal combustion engine and an improved rotary inlet valve for use therewith The internal combustion engine includes a working cylinder, a compressed air supply, an injector for supplying a gas and fuel mixture, an exhaust valve and an inlet valve. The inlet valve delivers both gas under pressure and gas and fuel mixture to the wo... | 09/12/1995 |
| 5419289 | Device for controlling the pneumatic injection of a carbureted mixture in a two-stroke internal-combustion engine and associated utilization A device for controlling a pneumatic injection of a carbureted mixture into a combustion chamber of a two stroke internal combustion engine, with the device including a compressed gas supply pipe adapted to be communicated with the combustion chamber of a... | 05/30/1995 |
| 5345897 | Gas-exchanging process for two-stroke, internal combustion engines The invention relates to a gas-exchanging process for two-stroke internal combustion engines, and a two-stroke internal combustion engine for executing the process, in which two scavenging paths of the gas are provided, namely the known reverse scavenging... | 09/13/1994 |
| 5154141 | Dual cycle engine process The invention relates to new and useful improvements in the exhaust and induction processes of the piston driven internal combustion engine. In the invention a gas ejector is used in conjunction with a poppet valve to control the induction of air and the ... | 10/13/1992 |
| 5027757 | Two-stroke cycle engine cylinder construction A cylinder for an internal-combustion two-stroke engine, having multiple intake ports, multiple intake valve ports and multiple exhaust ports. The cylinder enables a two-stroke engine to run on gasoline without premixing it with lubricating oil and, due t... | 07/02/1991 |
| 5005537 | Method and device for introducing a carburetted mixture under pressure in a chamber of a two-stroke engine A device, and method for introducing a carburetted mixture under pressure into a chamber of a first cylinder of a two stroke-internal combustion engine. The device includes a feed valve cooperating with a seat for closing a duct feeding carburetted mixtur... | 04/09/1991 |
| 4995349 | Stratified air scavenging in two-stroke engine A two-cycle engine has an air inlet in the crankcase, and a spiral air-fuel passage encircling the cylinder wall rising from the crankcase to an inlet in the cylinder head to effect cooling of the cylinder. A fuel injection device introduces fuel into the... | 02/26/1991 |
| 4917073 | Two stroke engine and method of designing same An internal combustion 2-stroke engine having at least one combustion chamber equipped with a delayed fuel supply system opening into a cylinder head. A wall of the cylinder has at least one exhaust port situated in the vicinity of a first referernce poin... | 04/17/1990 |
| 4864979 | Combustion engine The combustion engine of this invention is basically a two stroke engine at which each revolution of the crankshaft is subjected to a power stroke in each of the cylinders. However, this engine is chargable with turbo- or loader-pressure to increase its p... | 09/12/1989 |
| 4562796 | Reciprocating piston engine A reciprocating combustion engine is improved by a cycle which applies outlet slots at the bottom of the cylinders, through which the exhaust gases exit to pass into a charger drive unit, while the charger drive unit drives a charger which delivers air or... | 01/07/1986 |
| 4424772 | Internal combustion engine valve actuating cam A two stroke internal combustion engine with piston and cylinder has a crankshaft having peripheral gears and a cam both affixed to the same crankshaft throw. A trough is in the engine crankcase whereby the gears pass through lubrication.... | 01/10/1984 |
| 4399778 | Two cycle internal combustion engine A two-stroke engine includes an intake-and-scavenge valve in the cylinder head together with a fuel injection system, a recirculating type pressure lubricating system, and a blower or turbo charger assisting in charging the cylinder with air and also assi... | 08/23/1983 |
| 4218888 | Impact device An automatic impact delivering device or tool of the internal combustion type having a self-contained fuel supply, wherein: 1. valving is an integral function of the piston; 2. a pre-compression chamber and a combustion chamber are provided in the same structu... | 08/26/1980 |
| 4218994 | Fluid intake and exhaust assemblies for positive displacement apparatus Disclosed are intake and exhaust assemblies for forced air intake, reciprocating piston, internal combustion engine. Alternate embodiments of the air intake valve assembly include a hollow tube defining the intake port with means operatively coupling the ... | 08/26/1980 |
| 4206727 | Two-stroke-cycle engine having an auxiliary piston and valve arrangement, and its associated drive mechanism The invention provides a two-stroke-cycle engine which has a main piston, and an auxiliary piston and transfer valve arrangement. and its associated drive mechanism. The engine has also at least two intake valves arranged in the cylinder head. The auxilia... | 06/10/1980 |
