公开(公告)号：EP2577250A4

公开(公告)日：2017-01-18

申请号：EP11786993

申请日：2011-05-25

申请人： SCANIA CV AB

发明人： BÖKELUND BJÖRN ,  BLOM OLA

IPC分类号： G01M3/28 ,  F01N3/025 ,  F01N3/36 ,  F01N11/00 ,  F02M65/00

CPC分类号： F01N11/00 ,  F01N3/0253 ,  F01N2550/05 ,  F01N2610/03 ,  F01N2610/08 ,  F01N2610/146 ,  F01N2900/0422 ,  F01N2900/1808 ,  Y02T10/47

摘要： The present invention relates to a method for testing an injection system which has an injector (207) for injection of pressurised liquid to a process. Said pressurised liquid can be selectively supplied to said injector via a first valve (306), and a pressurised gas can be selectively supplied to said injector (207) via a second valve (308). The method, when said injector (207) is closed, comprises: - opening said second valve (308) to supply said pressurised gas to said injection system, - opening said first valve (306) to supply said pressurised liquid, - closing at least said first valve (306), and determining a first pressure in said injection system. - determining whether said first pressure fulfils a first criterion and, on the basis of said determination, determining whether said injection system is functioning properly or is malfunctioning.

摘要翻译： 本发明涉及一种用于测试注射系统的方法，所述注射系统具有用于将加压液体注射到过程的注射器（207）。 所述加压液体可以经由第一阀（306）选择性地供应到所述喷射器，并且加压气体可以经由第二阀（308）选择性地供应到所述喷射器（207）。 当所述注射器（207）关闭时，所述方法包括： - 打开所述第二阀（308）以将所述加压气体供应到所述注射系统， - 打开所述第一阀（306）以供应所述加压液体， - 至少闭合 所述第一阀（306），并且确定所述喷射系统中的第一压力。 - 确定所述第一压力是否满足第一标准，并且基于所述确定，确定所述喷射系统是否正常工作或发生故障。

公开(公告)号：EP3140524A4

公开(公告)日：2017-12-27

申请号：EP15788571

申请日：2015-05-06

申请人： SCANIA CV AB

发明人： BÖKELUND BJÖRN ,  ERWE KAROLIN

IPC分类号： F01N11/00 ,  F01N3/021 ,  F01N9/00

CPC分类号： F01N11/007 ,  F01N3/021 ,  F01N3/106 ,  F01N9/002 ,  F01N11/00 ,  F01N11/002 ,  F01N2550/04 ,  F01N2560/05 ,  F01N2560/08 ,  F01N2570/18 ,  F01N2900/0412 ,  F01N2900/06 ,  F01N2900/1406 ,  F01N2900/1606 ,  Y02T10/47

摘要： Methods and systems are provided to monitor a quantity relating to particulate mass M in at least one exhaust pipe arranged downstream of a combustion engine. A first determination device determines a reduction Δ of a pressure difference dP over at least one or several particulate filters, arranged downstream of the combustion engine. This reduction Δ is related to a pressure difference dPref over one or more corresponding reference particulate filters. A second determination device determines a quantity related to the particulate mass M, based on the determined reduction Δ of the pressure difference dP and a predetermined correlation between the reduction Δ and the quantity related to the particulate mass M, so that use of soot sensors in the exhaust pipe may be avoided. A comparison device compares the quantity with a defined threshold value Mth and a providing device provides indications related to the comparison.