SCR THAWING CONTROL SYSTEM

PROBLEM TO BE SOLVED: To provide a SCR thawing control system capable of distinguishing a thawing error from a failure while preventing a failure of a SM pump.SOLUTION: The SCR thawing control system 127 uses engine cooling water for thawing urea water when the urea water freezes in a urea water tan...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	IIDA KEIICHI, MINESAWA MASANOBU, AKABOSHI TAKEKAZU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a SCR thawing control system capable of distinguishing a thawing error from a failure while preventing a failure of a SM pump.SOLUTION: The SCR thawing control system 127 uses engine cooling water for thawing urea water when the urea water freezes in a urea water tank 105 for storing the urea water, in liquid feeding, forcibly feeding and collecting lines 116, 117, 118 between the urea water tank 105 and a dosing valve 104 for injecting the urea water from the upstream side of a SCR device 103, or in a supply module 106 connected to the liquid feeding, forcibly feeding and collecting lines 116, 117, 118, whichever, and operates the SM pump 112 of the supply module 106 after thawing, to inject the urea water from the dosing valve 104. Herein, a thawing control part 128 is provided for detecting pressure in the supply module 106 when operating the SM pump 112, and for stopping the operation of the SM pump 112 and continuing the thawing of the urea water when the pressure does not reach a fixed value.