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1. 发明专利

JP2002340854A SENSOR ELEMENT 审中-公开
公开(公告)号：JP2002340854A
公开(公告)日：2002-11-27
申请号：JP2002131388
申请日：2002-05-07
申请人： BOSCH GMBH ROBERT
发明人： DIEHL LOTHAR DR
IPC分类号： G01N27/419 , G01N27/407
摘要： PROBLEM TO BE SOLVED: To produce a porous layer with even thickness. SOLUTION: The porous layers 41 and 42 include first pore type pores, and the diameter of the pore corresponds to a half of the thickness of the porous layers 41 and 42 at least.

2. 发明专利

JP2002181780A SENSOR ELEMENT FOR FINDING CONCENTRATION OF GAS COMPONENT 审中-公开
公开(公告)号：JP2002181780A
公开(公告)日：2002-06-26
申请号：JP2001328141
申请日：2001-10-25
申请人： BOSCH GMBH ROBERT
发明人： LENFERS MARTIN , BRAUN HARRY , STRASSNER WALTER , DIEHL LOTHAR DR
IPC分类号： G01N27/419
摘要： PROBLEM TO BE SOLVED: To avoid the occurrence of ion exchanges between the gas components of a mixed gas between the electrodes of a pump cell and the electrodes of a concentration cell in an electrochemical sensor element which finds the concentrations of the gas components. SOLUTION: The pump cell has a first pump electrode arranged in a measuring gas chamber, a second pump electrode arranged on the surface of the cell directed to the mixed gas, and a first solid electrolyte layer provided between the first and second pump electrodes. The concentration cell has a reference electrode arranged in a reference gas chamber and a measuring electrode arranged in the measuring gas chamber. A second solid electrolyte layer is provided adjacently to the first solid electrolyte layer and, in the second solid electrolyte layer, the reference gas chamber and measuring gas chamber are provided. In this case, in addition, an inhibiting layer 24 is provided. The layer 24 inhibits the ionic conduction between the electrodes 20 and 23 of the pump cell and the electrodes 21 and 22 of the concentration cell.

3. 发明专利

JP2000111514A METHOD FOR INSPECTING MEASUREMENT SENSOR 失效
公开(公告)号：JP2000111514A
公开(公告)日：2000-04-21
申请号：JP28441299
申请日：1999-10-05
申请人： BOSCH GMBH ROBERT
发明人： DIEHL LOTHAR DR , BAREISS ALEXANDER
IPC分类号： G01N27/41 , G01N27/26 , G01N27/409 , G01N27/417
摘要： PROBLEM TO BE SOLVED: To accurately grade a measurement sensor after manufacturing by easily detecting the amount of reference air consumption of an impurity in a reference chamber. SOLUTION: In a method for inspecting a measurement sensor in a format for evaluating by a circuit unit by preparing a detection voltage that is supplied from a Nernst measurement cell being equivalent to oxygen concentration by the measurement sensor for determining the oxygen concentration in gas mixture air and tapping the detection voltage between a first electrode that is exposed to the above gas mixture air and a second electrode that is exposed to a reference gas, a measurement sensor 10 is heated to an operating temperature, a Nernst measurement cell 12 is loaded with a constant inspection voltage UP and gas mixture air 24' with specific oxygen concentration, and a measurement current IM of the Nernst measurement cell 12 is evaluated.

4. 发明专利

JP2000065792A ELECTROCHEMICAL MEASURING SENSOR AND ITS USE 失效
公开(公告)号：JP2000065792A
公开(公告)日：2000-03-03
申请号：JP3013199
申请日：1999-02-08
申请人： BOSCH GMBH ROBERT
发明人： SCHNAIBEL EBERHARD , NEUMANN HARALD DR , RIEGEL JOHANN DR , DIEHL LOTHAR DR
IPC分类号： G01N27/419 , G01N27/417
摘要： PROBLEM TO BE SOLVED: To provide an electrochemical measuring sensor judging the concn. of a gas to be measured, for example, the concn. of oxygen by an electrochemical element wherein the defect of conventional technique is eliminated. SOLUTION: In the electrochemical measuring sensor judging the concn. of a gas to be measured by an electrochemical element containing a first solid electrolyte member equipped with an electrochemical pump cell and a gas space and a second solid electrolyte member equipped with an electrochemical sensor cell (Nernst cell) and constituted so that the surface of the first solid electrolyte member turned to the space of gas to be measured and a gas penetrating opening are covered with a porous protective layer, a layer 25 having high density or slight porosity to a protective layer 21 is attached to the porous protective layer 21.

5. 发明专利

JPH11248675A ELECTROCHEMICAL MEASURING SENSOR FOR MEASURING CONCENTRATION OF GAS TO BE MEASURED AND ITS USE 失效
公开(公告)号：JPH11248675A
公开(公告)日：1999-09-17
申请号：JP36507598
申请日：1998-12-22
申请人： BOSCH GMBH ROBERT
发明人： JACH OLAF , RIEGEL JOHANN DR , DIEHL LOTHAR DR
IPC分类号： G01N27/409 , G01N27/416 , G01N27/417
摘要： PROBLEM TO BE SOLVED: To provide an electrochemical measuring sensor for measuring the concentration of gas to be measured with an electrochemical element. SOLUTION: This measuring sensor 1 includes an electrochemical pump cell 5, which has a first solid electrolyte 6, first and second electrodes 7, 8 and a gas space 13 and includes an electrochemical sensor cell (a Nernst cell) 9, which has a second solid electrolyte 10, third and fourth electrodes 11, 12 and a reference gas space, the fourth electrode 12 having a lead provided with a layer 24 for electrically insulating the second solid electrolyte 10.

6. 发明专利

JPH10300715A METHOD FOR INSPECTING LEAKAGE CURRENT IN PLANARTYPE LAMBDA SENSOR 失效
公开(公告)号：JPH10300715A
公开(公告)日：1998-11-13
申请号：JP10441598
申请日：1998-04-15
申请人： BOSCH GMBH ROBERT
发明人： NEUMANN HARALD , STRASSNER WALTER , DIEHL LOTHAR DR
IPC分类号： G01N27/409 , G01N27/26 , G01N27/407 , G01R31/02
摘要： PROBLEM TO BE SOLVED: To detect the position where a current leaks by the pigmentation of the surface of a lambda sensor by selecting a voltage so that a potential difference between an electrode and a heating element becomes positive. SOLUTION: The voltage of a voltage source 27 is selected so that the potential difference between an electrode 21 and a heating element 5 becomes positive. An electric field is formed between the electrode 21 and the heating element 5 due to the potential difference and O in is generated at a solid electrolyte 19. An electrical connection is generated between the solid electrolyte 19 and the heating element 5 according to a part where an insulation layer 13 leaks and current flows to the heating element 5. At the same time, the O ion travels along the electric field and changes into oxygen atom and is diffused externally. Discharged electrons are discharged via a voltage source 27, and the current is detected as a leakage current by a current-measuring instrument 29. Also, oxygen holes are generated in the solid electrolyte 19 and reach the surface of a lambda sensor 1 as a black pigmentation part and can be visually recognized, thus estimating the position of the leakage part.

7. 发明专利

JP2003207484A GAS MEASURING FEELER 审中-公开
公开(公告)号：JP2003207484A
公开(公告)日：2003-07-25
申请号：JP2002324221
申请日：2002-11-07
申请人： BOSCH GMBH ROBERT
发明人： SPRINGHORN CARSTEN , WAHL THOMAS , RIEGEL JOHANN DR , DIEHL LOTHAR DR
IPC分类号： G01N27/419 , G01N27/407
摘要： PROBLEM TO BE SOLVED: To electrically insulate a porous protective layer from a first solid electrolyte. SOLUTION: Insulation layers 50a, 51a are arranged at the side area of a first electrode 41a between the porous protective layer 44a and the first solid electrolyte 21. COPYRIGHT: (C)2003,JPO

8. 发明专利

JP2002296222A SENSOR ELEMENT 审中-公开
公开(公告)号：JP2002296222A
公开(公告)日：2002-10-09
申请号：JP2002081309
申请日：2002-03-22
申请人： BOSCH GMBH ROBERT
发明人： EGNER THOMAS , RENZ HANS-JOERG , DIEHL LOTHAR DR
IPC分类号： G01N27/409 , G01N27/406
摘要： PROBLEM TO BE SOLVED: To stop cracking of ceramics by reducing a temperature gradient generated on the outside surface of a sensor element. SOLUTION: A heat-conducting layer 51 is overlaid at least in a predetermined region on at least one outside surface of this sensor element 10, and the heat-conducting layer 51 has thermal conductivity higher than that of a material of the outside surface of the sensor element 10.

9. 发明专利

JPH11271262A SENSOR ELEMENT 失效
公开(公告)号：JPH11271262A
公开(公告)日：1999-10-05
申请号：JP2233399
申请日：1999-01-29
申请人： BOSCH GMBH ROBERT
发明人： JACH OLAF , DIEHL LOTHAR DR
IPC分类号： G01N27/409 , G01N27/407
摘要： PROBLEM TO BE SOLVED: To provide a sensor element excellent in thermal conduction in a region covering a reference gas passage, heated quickly thereby, and having improved thermal shock resistance. SOLUTION: This sensor element 10 is provided with at least one measuring electrode exposed to measured gas, at least one reference electrode exposed to reference gas, at least one heating device 20, and a reference gas passage 16. The heating device 20 has a heat conductor 22 and a heat conductor lead wire 21, and the reference gas is guided to the reference electrode via the reference gas passage 16. The heat conductor 22 has at least two heat-conducting sections 23, 24, 31, 34 outside a vertical projection of the reference gas passage 16, the two sections 23, 24, 31, 34 are connected crossing over the passage 16 by a connecting section, and the connecting section has a sectional area larger than one sectional area out of areas of the heat-conducting sections 23, 24, 31, 34.

10. 发明专利

JP2002310988A GAS SENSOR 审中-公开
公开(公告)号：JP2002310988A
公开(公告)日：2002-10-23
申请号：JP2002099231
申请日：2002-04-01
申请人： BOSCH GMBH ROBERT
发明人： WAHL THOMAS , HANDLER THORSTEN , BRAUN HARRY , BOEFFERT SVEN , DIEHL LOTHAR DR
IPC分类号： G01N27/26 , G01N27/419
摘要： PROBLEM TO BE SOLVED: To prevent the alteration of a sensor signal based on the polarizing effect in a first electrode. SOLUTION: In the gas sensor having a type equipped with a sensor element 10, which includes at least one electrochemical cell which has first and second electrodes 31 and 32 arranged on at least one solid electrolyte 21 so as to be spaced apart from each other and is constituted so that the second electrode 32 is arranged in one reference gas chamber 51, and especially measuring the physical quantity of a gas component especially in the exhaust gas of an internal combustion engine, the third electrode 33 coming into contact with the gas positioned in a gas chamber 52 is provided and the gas component can be replaced between the gas chamber 52 and the reference gas chamber 51 by voltage applied across the second and third electrodes 32 and 33.

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