Abstract: Methods and systems are provided for reducing wall-wetting and improving mixing of air and fuel within a pre-chamber system of an engine. In one example, a method comprises supplying an air flow to the pre-chamber system via an air injector system while a piston associated with a main chamber is undergoing reciprocating motion. In this way, a rotating or swirling flow of fuel exiting a pre-chamber fuel injector of the pre-chamber system may be induced, which may reduce wall-wetting and improve air and fuel mixing, and when fuel is not being injected to the pre-chamber system the air flow may pressurize the pre-chamber system to reduce an amount of residuals from the main chamber to the pre-chamber system.

Abstract: An apparatus for controlling an internal combustion engine is provided. An engine includes a compression release mechanism and a fuel injection valve. The compression release mechanism variably controls the opening degree of a valve member, and thereby connects the combustion chamber of the engine with at least one of the intake passage and the exhaust passage in order to release in-cylinder pressure during at least the compression stroke. A controller controls the fuel injection valve to execute coasting with the fuel cut off in which the fuel is cut off under a predetermined condition, and while executing coasting with the fuel cut off, controls the compression release mechanism to increase the opening degree of the valve member of the compression release mechanism as the speed of the engine is higher.

Abstract: An engine has an ignition source in a combustion chamber of the engine. An inner housing is provided that includes one or more jet apertures and defines an inner chamber containing the ignition source. An outer housing (or pre-chamber) is provided that includes one or more jet apertures in communication with the main combustion chamber and defines an outer chamber containing the inner housing.

Abstract: The present disclosure generally relates to an engine with an integrated mixing of fluids device and associated technology for improvement of the efficiency of the engine, and more specifically to an engine equipped with a fuel mixing device for improvement of the overall properties by inline oxygenation of the liquid, a change in property of the liquid such as cooling form improved combustion, or the use of re-circulation of exhaust from the engine to further improve engine efficiency and reduce unwanted emissions.

Abstract: An ignition plug for an internal combustion engine is provided, which includes a pre-combustion chamber cell (150) and at least three exhaust nozzles (160, 170). The pre-combustion chamber cell (150) is disposed to surround a pair of electrodes (140b) in the lower portion of a main cell (110) and is formed in the inner portion where the electrodes (140) are contained. Meanwhile, a circular main exhaust nozzle (160) through which a fluid goes in and out is disposed in the central region of the pre-combustion chamber cell (150). The ignition plug enables the whole engine to have a quick combustion speed. As a result, a more reliable improvement of a combustion performance can be obtained. Also, a fuel-to-air ratio can be enhanced, and an exhaust gas reduction effect can be obtained.

Abstract: An internal combustion engine having at least one cylinder within which is a reciprocable piston movable in a compression stroke followed by movement in a power stroke and wherein a combustible fuel mixture is injected into the combustion chamber, compressed, ignited, and burned to produce the power stroke of the piston. After the fuel has been ignited and during the compression of such mixture a quantity of water from a reservoir is injected into the combustion chamber and converted by the heat of combustion into superheated steam, thereby generating within the combustion chamber a force which assists in driving the piston through its power stroke. The products of combustion and steam are discharged from the cylinder following the power stroke and cooled in a heat exchanger in which the steam is condensed, following which the gases are exhausted and the condensate returned to the water reservoir.

Abstract: In a turbocharged diesel engine, the charge air is cooled in a charge air cooler designed as an injection intercooler. The water which has been introduced into the working medium of the diesel engine in the charge air cooler, after the working medium has been expanded, is condensed out of the exhaust gas by means of a condenser and a separator and is returned to the charge air cooler. According to the invention, the engine is started without injection of externally supplied water into the charge air cooler. Water which forms during the combustion in the diesel engine is condensed out of the exhaust-gas stream and returned to the charge air cooler. Additional water vapor formed continuously during operation through combustion of diesel fuel is likewise condensed out and introduced into the charge air cooler. In this way, the working medium is laden with moisture until the water mass flow that can be separated out of the exhaust gas is sufficient for the set cooling power of the charge air cooler.

Abstract: The invention is an apparatus consisting of a set of parts that can be assembled into a variety of internal-combustion engine analogs. The set of parts comprises a set of platform parts that can be assembled into a platform having a platform rotary axis and a platform reference axis normal to the platform rotary axis and a set of driver parts that can be assembled with a set of platform parts into a driver assembly supported by the platform. The driver assembly comprises one or more drivers, each driver containing a first driver point and a second driver point. The first driver point travels back and forth along a driver line segment while the second driver point travels in a driver circle around a driver-assembly rotary axis.

Abstract: Within a displaceable enclosed volume, appreciably smaller than the engine displacement volume, a fuel-rich air fuel mixture is prepared. Following the next engine intake process, this displacer mixture is pulsed into the engine cylinder to create a stratified air fuel mixture therein. Subsequent combustion of this stratified engine air fuel mixture can be knock free, thus permitting the use of very high intake supercharge for small displacement, low speed, and thus high mechanical efficiency engines. By placement of insulating, air only portions, of the stratified engine air fuel mixture, against the engine cylinder head and piston crown, cooling jacket heat loss can be reduced, and fuel efficiency increased. In these ways, large improvements in vehicle miles per gallon can be achieved.

Abstract: Improved combination apparatus is described for creating a fuel rich mixture in a displacer volume, separate from the combustion chamber of a piston internal combustion engine. This mixture is subsequently delivered into the engine combustion chamber, to create a stratified mixture, which is then ignited and burned only in the engine combustion chamber. By use of such stratified mixtures, several benefits over the prior art can be achieved, including: reduced engine friction losses, and consequently improved efficiency; reduced soot formation and engine exhaust emissions; more complete utilization of available air and increased engine power per unit of displacement.

Abstract: An air fuel vapor stratifier apparatus is described, for use with piston internal combustion engines, to create stratified air fuel vapor mixtures within the engine combustion chamber. A fuel rich air fuel vapor mixture is created within a separate chamber, and then displaced into the engine combustion chamber, where it mixes with air contained therein. The consequently leaner air fuel vapor mixture is spark ignited following mixing, and burning takes place. Very lean overall air fuel ratios can be used since a stratified mixture is created. Hence intake air throttling is unnecessary and thus engine efficiency is improved. The absence of liquid fuel during burning in the engine combustion chamber, largely prevents the formation of soot, and thus reduces undesirable exhaust smoke.

Abstract: In a method and device for feeding fuel into a combustion chamber of a cylinder of an internal combustion engine the following steps are discerned to withdraw a small amount of compressed hot gas via a valve opening into the combustion chamber of the cylinder during one working cycle, to store this small amount of hot gas withdrawn, in a valve chamber of the valve, to inject fuel into this valve chamber containing the small amount of hot gas, building a fuel-gas mixture, and to inject the fuel-gas mixture through the valve opening into the combustion chamber of the cylinder during next working cycle of the internal combustion engine.

Abstract: In a method and device for feeding fuel into a combustion chamber of a cylinder of an internal combustion engine the following steps are discerned to withdraw a small amount of compressed hot gas via a valve opening into the combustion chamber of the cylinder during one working cycle, to store this small amount of hot gas withdrawn, in a valve chamber of the valve, to inject fuel into this valve chamber containing the small amount of hot gas, building a fuel-gas mixture, and to inject the fuel-gas mixture through the valve opening into the combustion chamber of the cylinder during next working cycle of the internal combustion engine.

Abstract: A device for supplying a reciprocating internal combustion engine with a carburetted mixture. The device includes an injection orifice provided with a deflecting arrangement for deflecting a jet of the carburetted mixture delivered by a pneumatic injection system from a prechamber into a combustion chamber of the internal combustion engine through the injection orifice.

Abstract: Internal combustion engines to increase the engine output without altering the cylinder capacity, and comprising liquid injection valves (26, 46) by which fixed quantities of prescribed liquids are injected into combustion chambers (14a, 14b), timed to the detonation process in the internal combustion engine, and heating means by which the liquids injected from the liquid injection valves (26, 46) are heated beforehand to a predetermined high temperature by utilizing the intense heat generating around and nearby said combustion chambers (14a, 14b), so that the device enables effective utilization of heat energy generating around and nearby cylinders as well as increasing the engine output by the sudden expansion of the liquid injected into the combustion chamber pressing the piston therein with a powerful downward stroke.

Abstract: A separately ignited internal combustion engine and/or an ignition chamber insert for insertion into the combustion wall of an internal combustion engine is proposed with an ignition chamber which is connected to the main combustion chamber via several overflow channels. The ignition chamber is composed of a forward section with a small, and a rear section with a large diameter into which a straight center electrode protrudes which is surrounded with an insulator in the manner of a common spark plug. The ignition takes place at the transition between the forward section and the rear section between ignition chamber wall and center electrode. The forward section of the ignition chamber is connectable to the main combustion chamber via first overflow channels which discharge tangentially into said forward section and via a second overflow channel discharging coaxially to the ignition chamber insert.