摘要:
A gasoline engine having an exhaust system comprises means for trapping particulate matter (PM) from the exhaust gas and a catalyst for catalysing the oxidation of the PM by carbon dioxide and/or water in the exhaust gas, which catalyst comprising a supported alkali metal. The invention further includes a method of combusting PM from a gasoline engine in CO 2 and/or H 2 O from the exhaust gas at temperatures in excess of 500 °C, which method comprising trapping the PM and contacting it with a catalyst comprising a supported alkali metal.
摘要:
A machine (10) includes an internal combustion engine (18), and an exhaust particulate filter system (20) coupled therewith having an exhaust particulate filter (22) for trapping particulates in exhaust from the internal combustion engine (18). A control system (40) for the exhaust particulate filter (22) includes a sensing mechanism (42) such as an RF soot sensor (42) and a data processor (44) coupled with the sensing mechanism (42) and configured to output a moisture compensation signal responsive to a pattern of inputs from the sensing mechanism (42) indicative of moisture within the exhaust particulate filter (22), for controlling regeneration thereof.
摘要:
Es werden ein Verfahren und eine Vorrichtung zur Diagnose eines in einem Abgasstrom (ms - abg) angeordneten Katalysators (15, 16, 17) vorgeschlagen, die auf einer Bewertung der hygroskopischen Eigenschaften des Katalysators (15, 10 16, 17) beruhen.
摘要:
Disclosed herein is a method and apparatus for controlling a process, such as a chemical reaction, that emits a multi-component mixture of gases; and for controlling a device to which is transmitted a product of a chemical reaction that emits a multi-component mixture of gases.
摘要:
A deteriorated state evaluation device of an exhaust emission control equipment, wherein, after the operation of an engine (1) is started, the state in which a humidity represented by an output from a humidity sensor (19) on the downstream side of a hydrocarbon adsorbing material (7) is minimized is sequentially retrieved to detect a timing when the humidity is changed from the minimum value to the state of monotonous increase as a timing when the moisture and hydrocarbon absorbed by the hydrocarbon adsorbing material (7) are saturated, and after the operation of the engine is started, parameters representing a cumulative moisture amount given to the hydrocarbon adsorbing material (7) through exhaust emission are sequentially generated to evaluate the state of deterioration of the hydrocarbon adsorbing material (7) based on the parameter values at the saturated timing, whereby the state of deterioration of the hydrocarbon adsorbing material (13) can be accurately evaluated with an inexpensive structure using the humidity sensor (19) installed on the downstream side of the hydrocarbon adsorbing material (7).
摘要:
Die Erfindung betrifft ein Verfahren und eine Vorrichtung, insbesondere eine Steuer- und Auswerteeinheit, zum Erkennen einer Wasserdurchfahrt oder eines hohen Wasserstandes für ein Fahrzeug, welches zu seinem Antrieb eine Brennkraftmaschine mit einem Abgasstrang aufweist, in dem mit mindestens einem Abgassensor die Funktionalität einer Abgasreinigungsanlage überwacht oder gesteuert wird, und der Abgassensor zumindest zeitweise mit hohen Temperaturen betrieben wird und bauartbedingt eine Thermoschockempfindlichkeit aufweist. Erfindungsgemäß ist vorgesehen, dass ein Waterkennungskriterium auf Basis von einem oder mehreren Abstandssensoren bestimmt und bei prognostizierten oder schon erreichten kritischen Werten des Wasserstandes Schutzmaßnahmen für die Abgasreinigungsanlage des Fahrzeugs oder für den oder die im Abgaskanal angeordneten Abgassensoren eingeleitet werden. Damit können Schäden an Abgassensoren oder an Komponenten der Abgasreinigungsanlage infolge der starken Abkühlung bei Wasserkontakt minimiert werden. Zudem könnendurch diese vorausschauenden Schutzmaßnahmen auch Fehlinformationen der Abgassensoren infolge eines Thermoschocks und einer möglicherweise einhergehenden Fehlfunktion erkannt und entsprechend unterdrückt werden.
摘要:
After the start of operation of an engine (1), the characteristic change of a humidity sensor (19) is detected on the basis of the transition characteristic of output date from the humidity sensor (19) with respect to integrated water quantity data indicating the integrated water quantity fed to an HC adsorbent (7) through exhaust gases. Further, the data concerning the characteristics of the individual humidity sensors (19) are held by the resistance values of resistor elements (21) installed in the connectors or the like of the humidity sensors (19). Parameters for grasping the state of the HC adsorbent (7) are corrected according to the detected characteristic change of the humidity sensor (19) and the characteristics of the other individual humidity sensors (19), and the state of the HC adsorbent is grasped on the basis of the corrected parameters. This compensates the influence of the characteristic change of the humidity sensor and the influence of variation of the characteristic of each individual humidity sensor, thereby properly monitoring the state of degradation or the like of the hydrocarbon adsorbent (HC adsorbent).
摘要:
A deteriorated state evaluation device for exhaust emission control equipment, wherein a humidity sensor 4 is installed on the downstream side of the exhaust emission control equipment having a hydrocarbon adsorbing catalyst 2 and an air-fuel ratio sensor 5 is installed at least on the downstream side of the downstream side and upstream side thereof, and the hydrocarbon adsorbing capacity of the hydrocarbon adsorbing catalyst 2 exhaust emission control equipment by hydrocarbon adsorbing material is evaluated by using output data from the humidity sensor 4, the unburnt gas control capacity of the hydrocarbon adsorbing catalyst 2 by catalytic action is evaluated by using output data from the air-fuel ratio sensor 5, and the overall deteriorated state of the exhaust emission control equipment is evaluated based on the evaluated results, whereby the overall deteriorated state of the exhaust emission control equipment having the hydrocarbon adsorbing catalyst 2 can be properly evaluated.