Abstract:
The invention relates to apparatus for providing a fluid flow, comprising means in the form of a plate (11) defining a main fluid flow passage (13) and an additional fluid flow passage (31), for admitting air where the main passage is a passage for vapourising fluid fuel, a needle valve (38) to control flow in the passage (31) and a separate device (14) which defines a venturi via portion (26, 27) of a through bore, the device being locatable in the main fluid flow passage (13) and having a plurality of through spaced apart bores extending into the venturi, which effectively comprises the main fluid flow passage when the device (14) is in the plate (11). The same plate (11) may be used with different devices (14) to cater for different flow characteristics required.
Abstract:
Eine Anordnung zur Frischgasversorgung einer turboaufgeladenen Verbrennungsmaschine (1) mit einer Ansaugleitung (14) und einer Abgasleitung (15), weist Folgendes auf: einen Abgasturbolader (2) mit zumindest einem Verdichterlaufrad (4) zur Verdichtung von Frischgas und Zufuhr des verdichteten Frischgases an die Verbrennungsmaschine (1), und mit zumindest einem Antriebslaufrad (5) zum Antrieb durch Abgas der Verbrennungsmaschine (1) zum Antrieb des Verdichterlaufrads (4); und eine Druckluftzufuhreinrichtung (7) zur gesteuerten Zufuhr von verdichtetem Frischgas oder Druckluft an die Verbrennungsmaschine (1), wobei die Druckluftzufuhreinrichtung (7) mit einem Ladelufteinlass (10) mit dem Verdichterlaufrad (4), mit einem Auslass (13) mit der Ansaugleitung (14) und mit einem Drucklufteinlass (11) mit einer Druckluftquelle verbunden ist, wobei das zumindest eine Verdichterlaufrad (4) des Abgasturboladers (2) ganz oder teilweise aus Stahl oder einer Stahllegierung besteht.
Abstract:
An automatic control system is shown to vary the mixture of fuel-to-air in a conventional internal combustion engine to minimize resulting pollutants and maximize engine efficiency and performance. The system senses manifold vacuum (144) and engine acceleration (110) and based, in part, upon such inputs forces the mixture leaner until an instability event is detected at which time the system rapidly forces the mixture richer at a predetermined rate and time period to overcome the instability. The mixture is then again gradually forced leaner. The rate of leaning is controlled by the vacuum pressure (144, 146) so that no leaning occurs at or near full throttle and the rate of leaning is decreased either gradually or incrementally as power requirements decrease. The air-to-fuel ratio may be adjusted by regulating the introduction of secondary air (131, 135) or by adjusting the quantity of fuel injection.
Abstract:
There is disclosed a fuel nozzle, a pre-combustion fuel mixing device, and methods related to fuel processing. In an embodiment, a fuel nozzle includes at least one port for receiving fuel, a sidewall forming ports for introducing fuel into a pre-combustion chamber, and a plurality of conduits formed between the first end and the sidewall. In one embodiment, a method includes creating a gaseous, homogenous premixture of fuel and oxidizer in a first pre-combustion vortex chamber, which includes introducing fuel at an axis of the oxidizer vortex both axially and radially through an injector having a plurality of ports through a sidewall arranged in a plurality of rows substantially parallel to one another. In an embodiment, an apparatus includes a pre-combustion fuel mixing device having a housing with a first pre-combustion vortex chamber having a first compartment, a second compartment, and a third compartment.
Abstract:
The device is intended to introduce additional gas flows (air, exhaust gas, cracked gas) in the intake channel (39) of an internal combustion engine (11) wherein the mixture is compressed by means of slots (9, 10) facing each other in the wall of the intake channel downstream of the throttle valve (2) and extended in the peripheral direction of the intake channel (39) on a peripheral angle smaller than 180o, to which the additional gas is supplied by one of a plurality of inlet conduits (6, 7, 8, 14, 15, 19, 20); regulation member (5) is provided to regulate the additional gas flow supplied by those inlet conduits as a function of the vacuum prevailing in the intake channel (39). The slots (9, 10) are orientated so that none of them is traversed by a partition surface separating the intake channel (39) and formed by the displacement of the longitudinal axis of the throttle shaft (21) in parallel to the very surface along the longitudinal medial line of the intake channel (39). Such a device provides for a good preparation of the mixture and consequently an enhancement of the thermal efficiency of the internal combustion engine while enabling to lower the fuel consumption and the noxious gas content in the exhaust gas.
Abstract:
Verbrennungsmotor (1) mit mindestens einem Brennraum (2) zum Verbrennen eines Brennstoffs unter Zufuhr von Ansaugluft, mindestens einem eine Hauptströmung (4) der Ansaugluft in den Brennraum (2) führenden Einlasskanal (3) und mindestens einem in den Einlasskanal (3) mündenden Nebenkanal (5) zum Erzeugen einer Nebenströmung (6) einer Nebenluft in den Einlasskanal (3), wobei der Nebenkanal (5) so in den Einlasskanal (3) mündet, dass im Betrieb des Verbrennungsmotors (1) die Hauptströmung (4) durch die Nebenströmung (6) umgelenkt wird.
Abstract:
An automatic control system is shown to vary the mixture of fuel-to-air ratio in a conventional internal combustion engine to minimize resulting pollutants and maximize engine efficiency and performance. The system senses the manifold vacuum (44) and engine acceleration, and based in part upon such inputs forces the mixture leaner until an instability event is detected at which time the system rapidly forces the mixture richer at a predetermined rate and time to overcome the instability. The mixture is then again forced leaner. The rate of leaning is controlled by the vacuum pressure so that no leaning occurs at or near full throttle and the rate of leaning is decreased as power requirements decrease. Further, secondary air is introduced substantially tangentially (33, 35) to the primary air/fuel flow to maximize mixing between the primary and secondary air flows.
Abstract:
A flanged plate (20) for insertion between the carburetor and manifold bores (10 & 12a) for an internal combustion engine (13) to intercept the fuel-air mixture immediately after it leaves the carburetor around the throttle (11) therefor. The plate (20) comprises a plurality of flanged areas (F-1, F-2, F-3 & F-4) constructed and defined to intercept the fuel and air mixture while minimizing the restriction of the flow. The flanged areas (F-1, F-2, etc.) are defined over 180 degrees of the carburetor bore (10) to generate a multiplicity of small vortices (FV) that interfere with and reduce the large vortex (15) that is generally produced immediately below the carburetor's throttle valve (11). The interaction of the vortices (FV & 15) causes a reduction in back pressure, improved mixing of the fuel and air and increased volume of flow of the fuel and air mixture into the engine (13) leading to more complete combustion and increased miles per gallon of fuel with a cleaner exhaust stream.
Abstract:
An elongated fuel-air bypass (100) is connected between an outlet port of a fuel-air mixing device (11) and an inlet port of an intake manifold (12) of an internal combustion engine. The elongated bypass apparatus includes an elongated bypass conduit formed of a thermally conductive material and which has sufficient length, exterior surface area and thermal conductivity to enable it to cause liquid fuel introduced through the fuel-air mixing device to change from a liquid state to a gaseous state prior entry into the one or more cylinders of the internal combustion engine. Turbulence creating mechanisms, such as venturis or baffles, are provided in the elongated bypass conduit for creating turbulence in the fuel-air mixture flowing therethrough. An after-air supply tube is provided to supply after-air near an upstream end of the fuel-air bypass conduit.
Abstract:
A method for preparation of the fuel-air mixture provides for feeding into the flow of the fuel-air mixture a flow of a gas medium in the form of separate jets. Each jet of the gas medium is directed tangentially to the imaginary circumference (5) oriented coaxially to the flow of the fuel-air mixture and having the diameter (d) equal, approximately, to 0.2-0.8 of the diameter (D) of the cross-section of the flow of the fuel-air mixture, and the flow from the gas jets is brought to the value of the coefficient ( alpha ) of excess oxidizer in the fuel-air mixture of, approximately, 0.9-1.0. A device for preparation of the fuel-air mixture comprises a casing (8) with a main opening (9) and an annular distribution chamber (10) which is connected to the casing through channels (11), is mounted coaxially to the main opening (9) and is connected to a gas medium source through a feeding channel (12). The axis (14) of each channel (11) is oriented tangentially to the imaginary circumference (5) oriented coaxially to the main opening (9) and having the diameter (d) equal, approximately, to 0.2-0.8 of the diameter (D) of the main opening (9). A consumption regulator (17) is mounted on the section (16) of a feeding channel (12), located in the casing (8).