摘要:
Die Erfindung betrifft eine Vorrichtung 20 zur Regelung einer Brennkraftmaschine 10 sowie ein Verfahren zum Betrieb einer Brennkraftmaschine 10. Die Brennkraftmaschine 10 umfasst zudem ein nachrüstbares Steuergerät 31, das zur Erfassung der Betriebsgrößen mit dem MAP-Sensor 21 des Motors verbunden ist und manipulierte Betriebs- und Steuergrößen an die Motorsteuervorrichtung 30 weitergibt. Dadurch kann das Luft/Kraftstoff-Verhältnis während des Betriebs präziser reguliert werden, was zu einer höheren Leistung und Effizienz des Motors führt. Das besondere Merkmal dieser Vorrichtung 20 besteht darin, dass sie ein nachrüstbares Steuergerät 31 enthält, das zur Erfassung der Betriebsgrößen mit einem MAP-Sensor 21 des Motors 10 verbunden ist und manipulierte Betriebs- und Steuergrößen an die Motorsteuervorrichtung 30 weitergibt. Dadurch kann das Luft/Kraftstoff-Verhältnis während des Betriebs präziser reguliert werden, was zu einer höheren Leistung und Effizienz des Motors führt. Der MAP-Sensor 21 oder Ansaugkrümmer-Druck-Sensor ist ein elektronischer Sensor, der den Luftdruck im Ansaugtrakt 11 des Verbrennungsmotors misst. Der Sensor 21 besteht normalerweise aus einer kompakten Einheit mit einem Sensorelement und einem elektrischen Anschluss, welcher das Drucksignal in ein Spannungssignal umwandelt. Wie erläutert wird das Spannungssignal sowohl der Motorsteuervorrichtung 30 als auch dem Steuergerät 31 zugeführt.
摘要:
A fuel injection valve capable of forming a homogeneous air-fuel mixture in homogeneous combustion at a low engine speed and a control device thereof are provided. According to the present invention, a fluid injection valve that is configured separately from a fuel injection valve and has a function of injecting a fluid is provided and a control device of the fuel injection valve includes a control unit that performs control such that fuel is injected from the fuel injection valve and then controls the fluid injection valve such that the fluid is injected from the fluid injection valve and the fuel injected from the fuel injection valve is stirred.
摘要:
It effectively controls an exhaust gas to a target excess-air-ratio of an NOx purge or an SOx purge without using a lambda value of the exhaust gas. The exhaust purification system includes: an NOx reduction type catalyst (32) which is provided in an exhaust system of an internal combustion engine (10), and reduces and purifies NOx in an exhaust gas; and regeneration treatment units (60 and 70) which recover an NOx purification capacity of the NOx reduction type catalyst (32) by lowering an excess-air-ratio of the exhaust gas to a predetermined target excess-air-ratio, in which the regeneration treatment units (60 and 70) include target setting units (66 and 76) which set a target injection amount of at least one of a post injection and an exhaust pipe injection required for setting an excess-air-ratio of the exhaust gas to the target excess-air-ratio based on a suction air amount of the internal combustion engine, the target excess-air-ratio, and a fuel injection amount of the internal combustion engine, and an injection controller (50) which controls an injection amount of at least one of the post injection and the exhaust pipe injection based on the target injection amount input from the target setting units (66 and 76).
摘要:
The fuel injection control system (10) is configured to suppress output change of an engine even when the number of fuel injections changes. In a case where the number of fuel injections is switched from one to two, an injection timing is gradually advanced with the number of fuel injections in one cycle kept at one, until the injection timing is shifted to a first predetermined stage. When the injection timing is shifted to the first predetermined injection stage, the number of fuel injections is set to two, the first injection timing is set in the first predetermined injection stage, and an additional injection timing is set in a second predetermined injection stage. In a case where the number of fuel injections is switched from two to one, the number of fuel injections is set to one and the injection timing is gradually delayed until the injection timing is shifted to a third predetermined injection stage.
摘要:
A control unit (1) for an internal combustion engine (10) includes a load detector (2a) to detect a load on the engine (10), an injection volume calculator (5) to calculate a cylinder injection volume indicating a volume of fuel injected from a direct injector (11), a first controller (2e) to perform a first control for increasing the frequency of the injection by the direct injector (11) upon a reduction in the cylinder injection volume, a second controller (6) to perform a second control for increasing a port injection volume indicating a volume of fuel injected from a port injector (12) upon a reduction in the cylinder injection volume, and a switching controller (7) to switch between the first control with the first controller (2e) and the second control with the second controller (6) depending on the load.
摘要:
In order to effectively prevent the occurrence of pre-ignition without markedly deteriorating engine output, an engine control device is provided which includes a first fuel injection valve (A) and a second injection valve (B) provided at such a position that the amount of fuel injected by the second fuel injection valve and adhering to the inner peripheral wall of a cylinder is smaller than that of fuel injected by the first fuel injection valve and adhering to the inner peripheral wall of the cylinder. The engine control device further includes a cooling water temperature detecting means (25) for detecting the temperature of cooling water for cooling an engine (1), and an injection ratio determining means (21) for determining the ratio between the amount of fuel injected by the first fuel injection valve and the amount of fuel injected by the second fuel injection valve based on the temperature of cooling water. The injection ratio determining means (21) stores an injection amount adjustment operation range (R) in which the injection ratio determining means is configured to increase the fuel injection ratio of the amount of fuel injected by the second fuel injection valve to the total amount of fuel injected by the first fuel injection valve and the second fuel injection valve, when the temperature of cooling water falls.
摘要:
A control system for carburation of an internal combustion engine in use conditions comprising following activities: starting the engine with a value of λ equals λ0=λT; constructing a curve ci(α) of the ionization current α as a function of the angular position a of the crank shaft; selecting, on this curve ci(α), a number of points at intervals Δα of the rotation angle a; calculating value z, equal to integral from 0 to 360° of the curve ci(α), is done by summing products Δα×ci for all preselected points; interrupting supply of fuel for some cycles in order to externally modify factor λ0 and take it to value λ1; for value λ1 constructing curve ci(α) and calculating value z1; calculating difference Δz=z1−z0, and if the difference is >Δzref in absolute value, intervening on carburation by increasing the quantity of fuel injected in a case of a positive difference (lean mixture) and by reducing the quantity of fuel injected in a case of a negative difference (rich mixture).
摘要:
An engine control device controls a cylinder direct fuel injection type spark ignition engine provided with a fuel injection valve configured to directly inject fuel to a cylinder and an ignition plug configured to perform spark ignition for a gas mixture inside the cylinder. In a case where it is necessary to warm up an exhaust gas purifying catalyst disposed in an exhaust passage, the engine control device executes a catalyst warm-up operation in which a fuel is injected at a timing during the compression stroke, and at a timing when the fuel spray colliding with the piston crown surface moves toward the ignition plug along the shape of the piston crown surface, and in which the ignition timing is after compression top dead center. The engine control device advances the fuel injection timing in accordance with an increase in an estimation amount of a liquid fuel remaining on the top surface of the piston during execution of the catalyst warm-up operation.