摘要:
Die Erfindung betrifft ein Verfahren zum Reinigen des Abgases einer Brennkraftmaschine (1), insbesondere einer Diesel-Brennkraftmaschine, mit einem Partikelfilter (8) in einer Abgasleitung (3) der Brennkraftmaschine (1), bei dem die im Abgas enthaltenen Partikel mit dem Partikelfilter gefiltert werden. Damit eine verbesserte Oxidation der Partikel stattfinden kann, werden der NO 2 -Anteil und der C-Anteil im Abgas ermittelt und bei Unterschreitung und/oder Überschreitung bestimmter Wertebereiche im Abgas der NO 2 -Anteil und/oder der C-Anteil im Abgas so erhöht oder vermindert, daß die Anteile in den bestimmten Wertebereichen liegen.
摘要:
The invention concerns an exhaust gas return valve whose valve member (15) cooperates with a valve seat (13) of a muff (8) of an exhaust gas return pipe (6), the muff (8) projecting into a pipe (1) of the intake system of an internal combustion engine, and the valve seat facing towards the inlet end of the exhaust gas return pipe (6). In this way, a valve member (15) of the exhaust gas return valve is acted upon by exhaust gas pressure in the closure direction, additionally to a pressure spring (29) against which an armature (25) of an electromagnet (20) acts in the opening direction. In order to equalize the forces acting in the closure direction, the exhaust gas is guided via a duct (42) in the valve stem (17) into a control space (41) which is sealed with respect to the pressure in the pipe (1) by a movable wall (36) with an operating surface which corresponds substantially to the operating surface of the valve member (15). In this way, the forces are equalized such that the control of the exhaust gas return valve depends only on the electromagnetic forces and the force of the pressure spring (29).
摘要:
In an internal combustion engine having an exhaust-gas brake device (5,51) in exhaust-gas pipe (4) and an EGR device (7,8) which returns part of the exhaust-gas from the exhaust-gas pipe upstream from this exhaust-gas brake device to the air-intake manifold (2), a suitable exhaust-gas-brake force can be obtained by setting the opening pressure required to open the exhaust-gas valve (30) to a value which allows the production of a suitable exhaust-gas-braking force but lower than the opening pressure required to open the EGR control valve (8) of EGR device. As a result, when the exhaust-gas brake operates, the leakage of exhaust-gas into the air-intake manifold is eliminated, and the desired exhaust-gas-braking force is achieved.
摘要:
Device for swirling and mixing exhaust gases recycled in the intake duct (1) of an internal combustion engine via a recycling conduit (2). It is formed of two control flaps (3, 4) in the form of toroidal portions, mounted rotatably about axes of articulation (6, 7), said control flaps (3, 4) being displaceable in rotation between, on the one hand, a rest position in which they are retracted along the inner wall of the intake duct (1) so as to expose the entire cross-section of said duct and, on the other hand, an active position in which they are pulled towards one another so as to reduce said cross-section, and also formed of an actuator which makes it possible to control displacement of the control flaps (3, 4) between the active position and rest position thereof.
摘要:
The invention relates to an exhaust-gas recirculation device for recirculating exhaust gas into the gas supply of engines, in particular motor vehicle engines. Said device comprises an exhaust-gas supply (2), a fresh-gas supply (14) and an outlet channel (16) that opens into the gas supply. At least the exhaust-gas supply (2) and the fresh-gas supply (14) are interconnected via a control organ (4) for apportioning the exhaust gas. A pressure plate (8; 30; 50; 70;) is provided on the side of the control organ (4) facing the fresh-gas supply (14), said plate consisting of a base plate (32; 52; 72; 82) with gas passage zones (10; 40; 62) and at least one pivoting plate (34; 54; 74) that is mounted on the base plate so that it can rotate or pivot. Said pressure plate effects a pretension or retaining force, in particular in the form of a spring force (90), between the base plate and the pivoting plate, in order to cover the gas passage zones by bringing the pivoting plate to rest against the base plate.
摘要:
The invention relates to an exhaust-gas recirculation device for recirculating exhaust gas into the gas supply of engines, in particular motor vehicle engines. Said device comprises an exhaust-gas supply (2), a fresh-gas supply (14) and an outlet channel (16) that opens into the gas supply. At least the exhaust-gas supply (2) and the fresh-gas supply (14) are interconnected via a control organ (4) for apportioning the exhaust gas. A pressure plate (8; 30; 50; 70;) is provided on the side of the control organ (4) facing the fresh-gas supply (14), said plate consisting of a base plate (32; 52; 72; 82) with gas passage zones (10; 40; 62) and at least one pivoting plate (34; 54; 74) that is mounted on the base plate so that it can rotate or pivot. Said pressure plate effects a pretension or retaining force, in particular in the form of a spring force (90), between the base plate and the pivoting plate, in order to cover the gas passage zones by bringing the pivoting plate to rest against the base plate.
摘要:
An exhaust gas recirculation apparatus capable of preventing the occurrence of dewing inside an exhaust gas recirculation pipe after the engine stop and corrosion inside the exhaust gas recirculation pipe, an EGR valve, a reed valve, etc., and eventually capable of improving engine durability and engine life. This exhaust gas recirculation apparatus includes an exhaust gas recirculation pipe having an EGR valve for controlling an exhaust recirculation quantity and connected between an exhaust passage and an intake passage in an internal combustion engine equipped with a supercharger, and a check valve for preventing intake air from flowing into the exhaust gas recirculation pipe when an internal pressure of the exhaust gas recirculation pipe is lower than an internal pressure of the intake passage, disposed at the junction between the exhaust gas recirculation pipe and the intake passage, wherein the check valve has a clearance for communication between the exhaust gas recirculation pipe and the intake passage while the engine stops.
摘要:
Die Ventilanordnung für eine Abgasrückführung bei einem Verbrennungsmotor weist ein gesteuertes Ventil (1) auf, dessen Ventilteller (1a) mit einem Ventilsitz (2) in einem Ventilgehäuse (7b) zusammenwirkt. Der Abgaseinlaß des Ventilgehäuses ist über ein Abgasrückführrohr (7) mit der Abgasseite und der Abgasauslaß über ein Verbindungsrohr (16) mit der Ansaugseite des Verbrennungsmotors verbunden. Das Ventilgehäuse ist durch einen Endabschnitt (7b) des Abgasrückführrohres (7) selbst und der Ventilsitz (2) durch eine im Endabschnitt geformte Einschnürung (8) gebildet. Das an die Einschnürung (8) anschließende Rohrteil (9) des Endabschnittes (7b) trägt das Stellantriebs-Gehäuse (3). Das Rohrteil (9) ist seitlich mit einer den Abgasauslaß bildenden Öffnung (14) versehen und das Verbindungsrohr (16) ist im Bereich dieser Öffnung (14) an das Rohrteil (9) angelötet.