公开(公告)号：EP1101103B1

公开(公告)日：2015-09-09

申请号：EP99948697.0

申请日：1999-07-27

申请人： ROBERT BOSCH GMBH

发明人： SCHNEIDER, Jens, Stefan ,  HEIMANN, Detlef ,  RENZ, Hans-Joerg ,  NEUMANN, Harald ,  SCHUMANN, Bernd ,  DIEHL, Lothar

IPC分类号： G01N27/406

CPC分类号： G01N27/407

公开(公告)号：EP1853807B1

公开(公告)日：2014-01-08

申请号：EP06707876.6

申请日：2006-01-27

申请人： ROBERT BOSCH GMBH

发明人： WAHL, Thomas ,  STRASSNER, Walter ,  DIEHL, Lothar ,  RODEWALD, Stefan ,  SINDEL, Jürgen

IPC分类号： F02D41/14

CPC分类号： F02D41/1494

公开(公告)号：EP2002253B1

公开(公告)日：2012-06-13

申请号：EP07726504.9

申请日：2007-02-26

申请人： Robert Bosch GmbH

发明人： DIEHL, Lothar ,  SCHEFFEL, Marcus ,  SEILER, Thomas ,  REINSHAGEN, Holger

IPC分类号： G01N27/406

CPC分类号： G01N27/419 ,  G01N27/4067

摘要： The invention relates to a gas sensor for determining the oxygen concentration in a gas mixture, especially in the exhaust gas of internal combustion engines. Said gas sensor comprises a pump cell having an outer pump electrode, exposed to the gas mixture, and an inner pump electrode, exposed to the gas mixture via a diffusion barrier, and a solid electrolyte body interposed between the outer pump electrode and the inner pump electrode. The gas sensor also has a reference electrode, exposed to a reference gas, and a sensor heating device. The outer pump electrode is connected to a circuit arrangement via a pump current line, the inner pump electrode via a measuring line, the reference electrode via a reference current line and the sensor heating device via two heating lines. The invention is characterized in that the pump current line and one heating line are electrically interconnected and grounded, the pump current can be supplied via the measuring line and the Nernst voltage can be tapped between the measuring line and the reference pump current line and the reference pump current flows from the reference electrode to the outer pump electrode.

公开(公告)号：EP2411796A1

公开(公告)日：2012-02-01

申请号：EP10707488.2

申请日：2010-02-19

申请人： Robert Bosch GmbH

发明人： KRUSE, Peer ,  SCHNEIDER, Jens ,  DIEHL, Lothar

IPC分类号： G01N27/407 ,  G01N27/419 ,  F02D41/14

CPC分类号： G01N27/419 ,  F02D41/1496 ,  G01N27/4073

摘要： The invention relates to a method for operating a lambda probe for determining the concentration of gaseous components in the exhaust gas of internal combustion engines. Said method is characterised by the following steps: the internal resistance is determined; the internal resistance is compared to a resistance threshold value which can be predetermined; the pump voltage is applied when the resistance threshold value is exceeded.

公开(公告)号：EP1247090B1

公开(公告)日：2011-07-27

申请号：EP00993740.0

申请日：2000-12-14

申请人： ROBERT BOSCH GMBH

发明人： SCHEER, Heiner ,  WIEDENMANN, Hans-Martin ,  HICKL, Josef ,  WAHL, Thomas ,  SCHNEIDER, Gerhard ,  RENZ, Hans-Joerg ,  NEUMANN, Harald ,  DIEHL, Lothar ,  KARLE, Jürgen

IPC分类号： G01N27/407

CPC分类号： G01N27/4071

摘要： The reference air duct of a gas sensor or lambda sensor having a body which is embodied in the form of a laminate is produced by means of print technology, enabling a correspondingly structured layer to be imprinted upon an adjacent layer, e.g. by means of serigraphy.

公开(公告)号：EP2238329B1

公开(公告)日：2011-07-13

申请号：EP08871306.0

申请日：2008-11-14

申请人： Robert Bosch GmbH

发明人： SCHNEIDER, Jens ,  UHL, Stephan ,  WINKLER, Klaus ,  DIEHL, Lothar ,  STAVRIANOS, Dimitrios ,  WENDT, Juergen

IPC分类号： F02D19/08 ,  F02D41/00

CPC分类号： F02D19/088 ,  F02D19/061 ,  F02D19/084 ,  F02D41/0025 ,  F02D41/123 ,  F02D41/1456 ,  F02D2200/0612 ,  Y02T10/36

摘要： The invention relates to a method and a device for determining the composition of a fuel mixture made of one first fuel and at least one second fuel for operating an internal combustion engine, wherein said internal combustion engine has a fuel metering apparatus and at least one exhaust gas probe in an exhaust gas channel. According to the method of the invention, it is provided that the fuel mixture is at least sometimes supplied to the exhaust gas probe at least partially uncombusted, and the composition of the fuel mixture is determined from an output signal of the exhaust gas probe. According to the device of the invention, it is provided that the exhaust gas probe is situated proximal to the motor in the direction of the exhaust gas flow before a first catalytic converter, and the fuel mixture can be supplied at least partially uncombusted to the exhaust gas probe at least sometimes. The method allows the precise and reliable determination of the composition of a fuel mixture in internal combustion engines operated in flex fuel operation using existing components.

公开(公告)号：EP1506391B1

公开(公告)日：2009-09-30

申请号：EP03732227.8

申请日：2003-05-12

申请人： ROBERT BOSCH GMBH

发明人： DIEHL, Lothar

IPC分类号： G01N27/407

CPC分类号： G01N27/4071

摘要： The invention relates to a sensor for an electrochemical detecting element for determining the concentration of a gas component in a measuring gas, especially for determining the oxygen concentration in the waste gas from internal combustion engines. Said sensor comprises a Nernst cell (12) arranged on one side of a carrier (11) on the surface thereof and an electric heater (14) disposed on the other side of the carrier (11). The heater (14) is arranged on a second carrier (13) secured to the first carrier (11) in order to reduce a bimetal effect when rapidly heating the heater (14) and increased high tensile stress linked thereto in the longitudinal edges of the carrier (11). The second carrier is made from the same material and has at least approximately the same thickness as the first carrier (11) .

公开(公告)号：EP2092317A1

公开(公告)日：2009-08-26

申请号：EP07821686.8

申请日：2007-10-23

申请人： Robert Bosch GmbH

发明人： REINSHAGEN, Holger ,  DIEHL, Lothar

IPC分类号： G01N27/406 ,  G01K7/18 ,  G01K7/26 ,  G05D23/24

CPC分类号： G01N27/4067 ,  G01K7/183 ,  G01K7/26 ,  G01K2205/04 ,  G05D23/2401

摘要： A method for determining the temperature of a measurement sensor (10) for determining an oxygen concentration in gas mixtures, in particular in exhaust gases of internal combustion engines, wherein a detection voltage (UD) which corresponds to the oxygen concentration and is provided by a Nernst measuring cell (12) is evaluated, and the measurement sensor is regulated to an operating temperature using a heating device (50), is characterized in that the internal resistance of the Nernst measuring cell (12) is determined in a first temperature range and is used to infer the temperature of the Nernst measuring cell, and in that the internal resistance of the heating device (50) is determined in a second temperature range and is used to infer the temperature of the Nernst measuring cell.

公开(公告)号：EP1309852B1

公开(公告)日：2009-07-22

申请号：EP01964911.0

申请日：2001-08-16

申请人： ROBERT BOSCH GMBH

发明人： SCHEER, Heiner ,  RENZ, Hans-Joerg ,  RIEGEL, Johann ,  DIEHL, Lothar ,  THIEMANN-HANDLER, Sabine

IPC分类号： G01N27/417

CPC分类号： G01N27/4071

摘要： Zur Verbesserung der elektrischen Eigenschaften des Gassensors können folgende Massnahmen eingesetzt werden: Leiterbahnen für Elektroden sind in Draufsicht auf die Schichtebenen des Körpers des Sensors ausserhalb von Kavitäten im Körper, insbesondere ausserhalb des Referenzluftkanals, angeordnet. Die Elektroden sind in Richtung des abgasseitigen Endes des Sensors hin vergrössert. Die Leiterbahnen weisen eine erhöhte Schichtdicke auf oder sind als Doppelschicht ausgebildet.

公开(公告)号：EP1996927A1

公开(公告)日：2008-12-03

申请号：EP07704482.4

申请日：2007-02-09

申请人： Robert Bosch GmbH

发明人： DIEHL, Lothar ,  SEILER, Thomas

IPC分类号： G01N27/419

CPC分类号： G01N27/419

摘要： The invention relates to a gas sensor, especially a lambda probe, for determining the oxygen concentration in the exhaust gas of an internal combustion engine that is operated with a fuel/air mixture. Said gas sensor comprises a pump cell arranged in or on a sensor element (110), said pump cell having a first electrode (150) and a second electrode (140) that are separated from the exhaust gas by at least one layer (155; 156; 157, 158; 120), and an electronic circuit (190) for producing a voltage (Upump) applied between the first electrode (150) and the second electrode (140) and for measuring and evaluating a pump current (Ipump) thereby produced in order to make it possible to draw conclusions therefrom on the composition of the fuel/air mixture. The invention is characterized in that an additional outer electrode (170) is arranged on the sensor element (110). Said additional electrode is exposed to the exhaust gas and supplied with a negative current (Iadd).