摘要:
The present disclosure describes an exhaust gas recirculation (EGR) apparatus for a turbocharged internal combustion engine, the EGR apparatus comprising: an air intake duct with a throttle valve configured to control an intake air quantity flowing through the air intake duct to a turbocharger compressor; an exhaust gas recirculation inlet connected to the air intake duct downstream of the throttle valve; and an EGR valve configured to control an exhaust gas quantity recirculated to the turbocharger compressor via the exhaust gas recirculation inlet, wherein the throttle valve and the EGR valve are combined in a single valve unit in which the valves are separated by a separating element configured to substantially prevent exhaust gas from entering the air intake duct in a vicinity of the throttle valve.
摘要:
Die Erfindung betrifft eine Ansaugluftdrossel für einen Verbrennungsmotor, mit einem Ansauglufteinlass sowie einem Auslass, wobei zwischen dem Ansauglufteinlass und dem Auslass eine zwischen einer Offenposition und einer Stauposition bewegbare Ansaugluftdrosselklappe für die Steuerung eines Druckgefälles eines Fluidstroms von dem Ansauglufteinlass zu dem Auslass angeordnet ist, wobei die Ansaugluftdrossel zwischen dem Ansauglufteinlass und dem Auslass eine Strömungskanalinnengeometrie aufweist und die Grundform der Ansaugluftdrosselklappe zumindest teilweise einem Ausschnitt der Strömungskanalinnengeometrie der Ansaugluftdrossel entspricht.
摘要:
An integrated intake manifold assembly (10) including a first poppet valve assembly (16) disposed at the air inlet (96) to the manifold (12) to regulate air flow into the manifold; a second poppet valve assembly (20) disposed on the manifold to regulate exhaust gas flow into the air intake system; and a bi-directional camshaft (82) with cams (86,88) for operating simultaneously the manifold vacuum regulating (MVR) valve (16) and the exhaust gas recirculation (EGR) valve (20). The valve bodies (14,18) are integrally formed in the wall of the intake manifold, The camshaft is driven by a DC motor (70) and gear train (72,74,76,78,80). The cams are arranged on the shaft to provide optimum synchronized opening and closing of the related valves. When used on a diesel engine (32), the manifold assembly may further include a swirl valve plate (44) disposed between the manifold and the engine head and having a plurality of ganged swirl valves (50) actuated by levers (28,56,58) connected to the camshaft for coordinated motion with the MVR and EGR valves. Preferably, the swirl valve plate is also ported as a distribution rail (64) to receive exhaust gas from the single EGR valve and distribute it to the individual cylinders. The valve poppets of the MVR and EGR valves include forked yokes (130) engaging the camshaft to minimize side loading of the valve stems by the cams.
摘要:
An exhaust gas recirculation valve (10) for installation between an air intake and an exhaust of an engine comprising a housing (12) having a first bore (14) for connection with the air intake and a second bore (16) for receiving exhaust gas from the exhaust, the second bore being at an angle to the first bore and opening into the first bore; a valve stem (24) extending from the first bore into the second bore; a valve seat (28) in the second bore at the opening (18) of the second bore into the first bore; a valve head (30) on the valve stem within the second bore and normally in engagement with the valve seat; eccentric drive means (42) rotatably mounted in the first bore and connected to the valve stem; actuating means (34) mounted on the housing and connected to the eccentric drive means, which, on actuation, rotates the eccentric drive means to move the valve stem to disengage the valve head from the valve seat. EGR valve suitable for a diesel engine or other types of engine.
摘要:
A spark ignition internal combustion engine is described comprising; an intake manifold (12); a main throttle (14) for regulating the intake of ambient air into the intake manifold; an EGR pipe (42) connected between a point in the intake manifold (12) downstream of the main throttle (14) and a point in the exhaust system located downstream of the main restriction (62) to exhaust gas flow, such that the exhaust gas pressure at the latter point is substantially constant during engine operation, and; an EGR throttle (44) rigidly connected at (46) for movement with the main throttle (14), the EGR throttle (44) having a similar geometry to the main throttle (14) such that the flow cross sections of the main throttle (14) and the EGR throttle (44) are in a fixed predetermined ratio to one another for all positions of the main throttle (14).
摘要:
Eine Vorrichtung zum dosierten Einspeisen von verbrannten Gasen in den Brennraum einer Verbrennungskraftmaschine (5), bei der in dem Ansaugrohr (6) eine Drosselklappe (3) angeordnet ist. Das Abgasrohr (7) ist durch eine Leitung (8) mit einem darin enthaltenen Sperrventil (1) mit dem Ansaugrohr (6) verbunden, wobei in dem Ansaugrohr (6) die Drosselklappe (3) auf einer Antriebswelle (4) angeordnet ist. Das Sperrventil (1) umfaßt ein Stellglied, das durch die Antriebswelle (4) betätigbar ist.
摘要:
Bei einer mehrzylindrigen Brennkraftmaschine, insbesondere einem Ottomotor, mit Abgasrückführsystem (24) wird zur Reduzierung des Kraftstoffverbrauchs die Abgasrückführrate über eine Turbulenzdüse (28), die unmittelbar am Einlaßventil (15) angeordnet ist, dem Kraftstoff-Luft-Gemisch zugeführt. Hierzu mündet die vom Abgassammelrohr (19) abzweigende Abgasrückführleitung (25) in einem Sammelbehälter (26), dem ein Zumeßorgan in Form einer Drosselklappe (29) oder eines Dosierventils, vorgeschaltet ist. Vom Sammelbehälter (26) führen separate Abgaszuführleitungen (27) zu den einzelnen Turbulenzdüsen (28). Die Drosselklappe (29) wird synchron mit der dem Ansaugsammelrohr (18) üblicherweise vorgeschalteten Drosselklappe (31) betätigt. Abstract In a multicylinder internal combustion engine, in particular an Otto engine, with exhaust return system (24), the fuel requirements are reduced by introducing the exhaust return into the fuel/air mixture through a turbulence nozzle (28) arranged directly on the intake valve (15). The exhaust return line (25) which branches off the exhaust manifold (19) opens into a collecting container (26), a dosing element in the form of a throttle valve (29) or a metering valve being connected upstream to the collecting container. Separate exhaust gas feed lines (27) lead from the collecting container (26) to the individual turbulence nozzles (28). The throttle valve (29) is actuated in synchronization with the throttle valve connected upstream in the usual way to the intake manifold (18).
摘要:
The flow control device is positioned at a junction area between a first line (3) carrying a first fluid and a second line (8) carrying a second fluid towards the first line. It comprises: - a wall member (14) forming part of the peripheral wall of the first line, having an opening (16) and being movable so as to reduce the cross-section of the first line, in the vicinity of the opening, from a full section state to a reduced section state; - a valve (20) comprising: - a housing (30) secured to the wall member and having an inner passageway (33) between a first port (31) in fluid communication with the wall member opening and a second port (32) in fluid communication with the second line; - a shutter (40) which can move in the housing between a closed position, in which it closes the inner passageway, and an open position, in which the second fluid can flow through said inner passageway; - an actuator connected to the shutter, which can be moved with respect to the housing, and accordingly move the shutter in said housing, between a first position, corresponding to the closed position of the shutter, and a second position, corresponding to the open position of the shutter, the relative position between the housing and the wall member remaining unchanged during this movement of the actuator, the actuator being further movable from its second position to a third position and to cause, during this further movement, a move of the valve from a neutral position towards a sucking position, and to cause accordingly a move of the wall member secured to the housing, from its full section state towards its reduced section state.