A valve arrangement for supplying air to an internal combustion engine includes a first valve and a second valve arranged within the first valve. A valve guide for use in a valve arrangement is also provided.

The present invention provides, in an internal combustion engine of the type including: a combustion cylinder having a combustion chamber; an intake port in fluid communication with the combustion chamber; an intake valve for opening and closing the intake port; an exhaust port in fluid communication with the combustion chamber; and an exhaust valve for opening and closing the exhaust portion; the improvement comprising: (a) at least one intake injector disposed within the intake port for injecting a fluid into the combustion chamber; (b) at least one exhaust injector disposed within the exhaust port for injecting a fluid toward the exhaust valve; and (c) means for controlling the at least one intake injector and the at least one exhaust injector.

A valve arrangement for supplying air to an internal combustion engine includes a first valve and a second valve arranged within the first valve. A valve guide for use in a valve arrangement is also provided.

The proposed solution relates to a fuel nozzle for the injection of hydrogen into a combustion chamber of an engine, the fuel nozzle including, for provision of a hydrogen-air mixture, a nozzle head having outflow openings (19, 21) at an end face of the nozzle head.

Multiple first outflow openings for hydrogen to be injected and at least one second outflow opening for air to be injected are present at the end face for the provision of the hydrogen-air mixture, where the at least one second outflow opening has a polygonal cross section and the multiple first outflow openings at the end face are arranged around the at least one second outflow opening.

Oxidizer and fuel supply system for internal combustion engines, which includes oxygen supplies for the engines, particle filters, oxygen generators using nanofilters, pressurized oxygen bottles and air compressors, O2 loading media, by means of bottles, carboys or interchangeable tanks or hoses, Complementary means of nanomolecular membrane filters that separate O2 from air, performing the separation by means of aspiration or suction from the combustion engine or the suction or impulsion of a pump or compressor driven by an electric motor or mechanically by the combustion engine itself; Storage means for the separated or obtained O2; means for controlling the variable fuel/O2 mixture by means of a processor or an ECU (engine control unit); and as fuel: synthetic fuel, hydrocarbons, alcohols or hydrogen.

A valve arrangement for supplying air to a combustion chamber of an internal combustion engine includes a first valve, the first valve including a first valve head, a first valve stem assembly and an internal cavity, which is at least partly located in the first valve stem assembly, and a second valve partly arranged within the internal cavity of the first valve, the second valve including a second valve head and a second valve stem assembly, and being movable within the internal cavity between an upper, closed position and a lower, open position, wherein a junction seal extends over a junction between the first valve stem assembly and the second valve stem assembly when the second valve is in the closed position. A leakage preventing arrangement is arranged to hinder leakage of liquid from the outside of the junction seal from reaching in between the first valve stem assembly and the second salve stem assembly.

The present invention provides, in an internal combustion engine of the type including: a combustion cylinder having a combustion chamber; an intake port in fluid communication with the combustion chamber; an intake valve for opening and closing the intake port; an exhaust port in fluid communication with the combustion chamber; and an exhaust valve for opening and closing the exhaust portion; the improvement comprising: (a) at least one intake injector disposed within the intake port for injecting a fluid into the combustion chamber; (b) at least one exhaust injector disposed within the exhaust port for injecting a fluid toward the exhaust valve; and (c) means for controlling the at least one intake injector and the at least one exhaust injector.

A supply system for supplying ozone to an engine includes an electrolysis part that electrolyzes water to generate hydrogen and oxygen, a first supply part that supplies hydrogen generated by the electrolysis part to an intake pipe of the engine, an ozone generation part that generates ozone from oxygen generated by the electrolysis part, and a second supply part that supplies ozone generated by the ozone generation part to the intake pipe.

A valve arrangement for supplying air to an internal combustion engine includes a first valve and a second valve arranged within the first valve. A valve guide for use in a valve arrangement is also provided.

A flow rate control valve in which a valve body can be assembled and removed to a driving source. Where a valve body is assembled to a motor, a moving member is screwed to one end of a rotating shaft, the moving member is inserted into the valve member, the valve member is abutted on a locking portion, the valve member is prevented from coming off from the moving member, the valve member is disposed to an energizing member provided in the body, and the valve body can be assembled to the motor. Where the valve body is removed, the valve member prevented from coming off is pulled out from the body with the moving member, the valve member is removed from the moving member by releasing coming-off prevention of the valve member, further the moving member is removed from the rotating shaft, and the valve body can be removed.