44 results about "Indirect injection" patented technology

A two-stroke engine having both a direct injector and an indirect injector. The direct injector injects fuel into the cylinder without passing through the crank case. The indirect injector is in fluid communication with the crank case. It provides fuel delivery through the crank case and through a transfer channel to the cylinder. A controller is coupled to the direct injector and to the indirect injector. The controller starts, stops, and varies the fuel delivery of each injector. The controller is programmed to increase the fuel delivery of the indirect injector at a predetermined engine speed. The controller maintains primary fuel flow through the direct injector below a predetermined engine speed. The controller varies the fuel delivery based on at least one of following: engine speed, throttle position, exhaust valve position, intake air temperature, exhaust temperature, barometric pressure, coolant water temperature, and piston position.

The present invention relates to a method of controlling an indirect-injection engine, notably a supercharged engine, in particular a spark-ignition engine, comprising at least one cylinder (10) including a combustion chamber (12), at least two air intake means (14, 16) comprising each a pipe (18, 20) controlled by an intake valve (22, 24), at least one fuel injection means (26, 28) associated with each intake means and at least one burnt gas exhaust means (30) with an exhaust valve (32), said engine running according to two intake modes, a mode with burnt gas scavenging and a mode without scavenging, characterized in that it consists in:supplying, in intake mode with scavenging, non-carbureted air through one (16) of the intake means then, in the vicinity of the scavenging end, in supplying carbureted air through the other (14) intake means,supplying, in intake mode without scavenging, carbureted air through the two intake means (14, 16).

The present invention relates to fuel systems for diesel engines. In particular, the invention relates to a dual fuel supply system (10) for a diesel engine having an indirect-injection system (12). The invention extends to a diesel engine incorporating the dual fuel supply system (10) and to a vehicle that incorporates a diesel engine having the dual fuel supply system (10). The dual-fuel supply system (10) includes a mixed fuel supply system (17) that includes a first stage (14) having a diesel tank (42) and LPG tank (44), and as second stage (16) to supply the fuel mixture to the injection system (12). The dual-fuel supply system (10) also includes diesel supply system (80) for delivering diesel to the injection system (12). Moreover, the dual fuel system (10) is configured to permit selective change over between the diesel supply system (80) and the mixed fuel system (17) to supply the injection system (12) selectively with either diesel or liquid fuel mixture respectively.

A laser scattering based imaging technique is utilized in order to visualize the aerosol droplets in an inductively coupled plasma (ICP) torch from an aerosol source to the site of analytical measurements. The resulting snapshots provide key information about the spatial distribution of the aerosol introduced by direct and indirect injection devices: 1) a direct injection high efficiency nebulizer (DIHEN); 2) a large-bore DIHEN (LB-DIHEN); and 3) a PFA microflow nebulizer with a PFA Scott-type spray chamber. Moreover, particle image velocimetry (PIV) is used to study the in-situ behavior of the aerosol before interaction with, for example, plasma, while the individual surviving droplets are explored by particle tracking velocimetry (PTV). Further, the velocity distribution of the surviving droplets demonstrates the importance of the initial droplet velocities in complete desolvation of the aerosol for optimum analytical performance in ICP spectrometries. These new observations are important in the design of the next-generation direct injection devices for lower sample consumption, higher sensitivity, lower noise levels, suppressed matrix effects, and for developing smart spectrometers. For example, a controller can be provided to control the output of the aerosol source by controlling the configuration of the source or the gas flow rate via feedback information concerning the aerosol.

The invention discloses a hydrogen engine, which comprises a fuel gas supply system, an intake manifold, a CNG special spark plug and a cylinder, wherein, fuel gas injectors are arranged on different positions of the end part of the fuel gas supply system extending into a cylinder cover of the engine; and hydrogen is directly injected into the cylinder of the engine through the fuel gas injector or is indirectly injected into the cylinder of the engine through the fuel gas injector after mixing with inlet gas in an inlet channel. By adoption of the technical proposal, direct injection of hydrogen in the cylinder of the engine is realized; compared with a general hydrogen engine, higher charging efficiency and thermal efficiency are obtained by adoption of higher compression ratio, and thepower and the torque of the engine are increased; moreover, the hydrogen engine has the advantages of high power output, high response speed and so on; simultaneously, the combustion is improved and the exhaust is reduced. The problems of premature combustion and backfire are solved by adoption of the control means of combination of direct injection in the cylinder and indirect injection of the inlet channel, and simultaneously the maximum potential and exhaust advantages of hydrogen engines are given full play.

The invention relates to an internal-combustion engine, notably an indirect-injection supercharged engine, that can run with a burnt gas scavenging stage, comprising at least a cylinder (10) including a combustion chamber (12), non-carbureted air intake passage (16) with an air intake valve (24), carbureted air intake passage (14) with a carbureted air intake valve (22), burnt gas exhaust passage (28) with an exhaust valve (32), an exhaust camshaft (36) for controlling the exhaust passage (28), an intake camshaft (44) for controlling the air intake passage (16) and the carbureted air intake passage (14).

The present invention relates to an indirect-injection internal-combustion engine, notably a supercharged engine, in particular of spark-ignition type, that can run according to a burnt gas scavenging mode or to a conventional mode, comprising at least one cylinder (10) with a combustion chamber (12), at least two air intake means (14, 16), one (14) of the means being a burnt gas scavenging intake means and the other (16) being a fuel injection intake means. The means comprising each a pipe (18, 20) controlled by an intake valve (22, 24), at least one burnt gas exhaust means with an exhaust valve (34) associated with an exhaust pipe (36) and at least one fuel injection means (26). According to the invention, the fuel injection means comprises an injector (26) with two nozzles (28, 30) allowing, when the engine runs in scavenging mode, the injection intake means (16) to be supplied with fuel through one (30) of the nozzles only and, when the engine runs under conventional conditions, scavenging intake means (14) and injection intake means (16) are respectively supplied with fuel through nozzles (28, 30).

A method and system for utilizing electromagnetic energy of a frequency, and / or multiple frequencies, and higher harmonics of those frequencies to disrupt the normal bonding of the fluid molecules and that of mineral structures within the body of the fluid is disclosed. Electromagnetic signals at a frequency, frequencies, and higher harmonics related to the energy absorption / emission profile of the fluid being treated are directed into the fluid through direct or indirect injection and / or induced coupling. The frequency, frequencies, and higher harmonics of the treatment signal, preferably between 0.1 KHz and 1000 MHz, may be changed if the absorption / emission profile of the fluid changes during treatment.