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51. 发明专利

JP2000046779A GAS SENSOR CONTROLLER 失效
公开(公告)号：JP2000046779A
公开(公告)日：2000-02-18
申请号：JP20966898
申请日：1998-07-24
申请人： NGK SPARK PLUG CO
发明人： SATO YOSHIKUNI , ISHIDA NOBORU , SHIBATA MASAHIRO , OHASHI MOTOHIRO
IPC分类号： G01N27/26 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To provide a gas sensor controller for measuring a gas concentration of specific gas in gas to be detected with a high accuracy for a long period. SOLUTION: At step 150, since 6 hours are not elapsed from when a power source is turned ON, a correcting calculation is not executed, but a concentration conversion of a sensor output is conducted, and its value is output as a carbonic acid gas concentration. At step 160, since 6 to 30 hours are elapsed, sampled data for correcting MODE1 is recorded. In other words, the concentration is measured, and its value is stored in a sensor recording area in a RAM. At step 170, since 30 to 54 hours are elapsed, a correction by the MODE1 is executed. At step 180, sampled data for correcting MODE2 is recorded. Meanwhile, at step 130, since 54 hours or more are elapsed, the correction by the MODE 2 is executed. At step 140, sampled data for the MODE2 is recorded.

52. 发明专利

JPH1197156A CAST-IN HEATER UNIT 失效
公开(公告)号：JPH1197156A
公开(公告)日：1999-04-09
申请号：JP27201197
申请日：1997-09-17
申请人： NGK SPARK PLUG CO
发明人： ISHIDA NOBORU , KITANOYA SHOJI
IPC分类号： H05B3/14 , H05B3/40
摘要： PROBLEM TO BE SOLVED: To provide a ceramic heater made by inclusion casting having a high durability and reliability, which can equip the electrode part with a high insulative and a high moisture-proof effect, is embodied in a structure with the ceramic unlikely to crack, and is free of dispersion in the heat emitting amount as the heater element through achievement of the adjustment of the liquid level of low-melting point metal using a simple configuration and at a low cost. SOLUTION: A cast-in ceramic heater 1 is equipped with a metal case 2 and a heater element 6 cast in by a metal layer 5 which fills the inside of the case 2. In the side wall of the metal case 2, a communication part 31 in the form of a through hole, notch, etc., to put the inside of the case 2 in communication with the outside is furnished at the specified level viewed from the bottom surface of the case 2, and the metal layer 5 filling the case should attain the level corresponding to the lower edge of the communication part 31.

53. 发明专利

JPH10221303A METHOD FOR MEASURING NOX GAS CONCENTRATION AND NOX GAS CONCENTRATION DETECTOR 失效
公开(公告)号：JPH10221303A
公开(公告)日：1998-08-21
申请号：JP34723197
申请日：1997-12-02
申请人： NGK SPARK PLUG CO
发明人： ANDO MASAFUMI , OTSUKA TAKAYOSHI , ISHIDA NOBORU , OSHIMA TAKAFUMI
IPC分类号： G01N27/419 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To precisely measure an NOx gas in an H2 O-containing atmosphere by leading out an oxygen gas from a flow passage through a ceramic body after a gas to be measured containing NOx is introduced to the flow passage and applying a voltage across electrodes on the surface of the ceramic body within such an extent that the H2 O in the residual gas is not dissociated. SOLUTION: An exhaust gas is made to flow in a measurement chamber 2 through a diffusing hole 1 and an oxygen ion pump cell 6 pumps out the oxygen in the exhaust gas within such an extent that NOx resolution does not take place. At the time of pumping out the oxygen, the partial pressure of oxygen in the chamber 2 is controlled to a fixed level by driving the pump cell 6 based on signals from oxygen partial pressure detecting electrodes 7-a and 7-b. Concentration-controlled O2 and NOx flow in another measurement chamber 4 from the chamber 2 through a diffusion hole 3. When another oxygen ion pump cell 8 pumps out the oxygen in the chamber 4, the oxygen concentration in the chamber 8 drops and the NOx in the chamber 4 is resolved into N2 and O2 due to the catalytic actions of electrodes. Therefore, when the value of the current flowing to the cell 8 is measured, the concentration of the NOx gas can be measured.

54. 发明专利

JPH10160703A GAS CONCENTRATION DETECTOR OF NOX 失效
公开(公告)号：JPH10160703A
公开(公告)日：1998-06-19
申请号：JP33498796
申请日：1996-11-29
申请人： NGK SPARK PLUG CO
发明人： NADANAMI NORIHIKO , SUGAYA SATOSHI , ISHIDA NOBORU , OSHIMA TAKAFUMI
IPC分类号： G01N27/419 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To provide a gas concentration detector of NOx which is capable of performing the accurate measurement of gas concentration of NOx and lowly dependent on changes in oxygen concentration in an atmosphere to be measured. SOLUTION: This detector is provided with the second measurement chamber 4 into which an atmosphere to be measured containing NOx whose oxygen partial pressure is controlled by the first oxygen ion pump cell 5 is introduced from the first measurement chamber and the second oxygen ion pump cell 11 which decomposes NOx present in the second measurement chamber 4. A protective means 13 which at least partially surrounds an electrode 11b is provided for the detector so as to relax atmospheric changes in the vicinity of the electrode 11b provided for the second ion pump cell 11 outside the second measurement chamber 4.

55. 发明专利

JPH1090220A GAS COMPONENT CONCENTRATION DETECTOR 失效
公开(公告)号：JPH1090220A
公开(公告)日：1998-04-10
申请号：JP26925796
申请日：1996-09-19
申请人： NGK SPARK PLUG CO
发明人： ISHIDA NOBORU , ANDO MASAFUMI , OSHIMA TAKAFUMI
IPC分类号： G01N27/419 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To provide a gas component concentration detector combined with function of an oxygen sensor or an air-fuel ratio sensor. SOLUTION: Based on the oxygen concentration detecting cell 4 output of a gas component concentration detecting element, which is composed of a first chamber 1 provided with a first oxygen ion pump cell 3 and communicating with a gas to be measured ambient atmosphere through a first gas diffusion resistance unit 2, an oxygen concentration detecting cell 4 for detecting the oxygen concentration inside the first chamber 1, a second chamber 9 provided with a second oxygen ion pump cell 10, and a second gas diffusion resistance unit 8 communicating with the first chamber 1 and the second chamber 9, the current of the first oxygen ion pump cell 3 is controlled and an oxygen contained gas component, which is the target inside the second chamber 9, is decomposed by impressing the second oxygen ion pump cell 10 with set voltage, while the oxygen contained gas component concentration, which is the target in the gas, is detected from the current of the second oxygen ion pump cell 10 and the oxygen concentration or the air-fuel ratio in the gas is outputted by adding the current flowing through the first 3 and the second 10 oxygen pump cells.

56. 发明专利

JPH09289073A CERAMIC HEATER WITH CURRENT INTERRUPTING FUNCTION AND LIQUID HEATER UNIT USING THE SAME 失效
公开(公告)号：JPH09289073A
公开(公告)日：1997-11-04
申请号：JP12918096
申请日：1996-04-24
申请人： NGK SPARK PLUG CO
发明人： KITANOYA SHOJI , YASUDA MINORU , ISHIDA NOBORU
IPC分类号： H05B3/14 , H05B3/82
摘要： PROBLEM TO BE SOLVED: To provide a ceramic heater which can surely interrupt current by detecting temperature rises due to overheating or heating of an empty container of a heating unit, etc., with good sensitivity using relatively simple circuit arrangement, and to provide the liquid heating unit using the same. SOLUTION: This ceramic heater 1 has a current-interrupting mechanism 6, which is provided in the current path of a resistance heating element in the space inside a heater main body 10 having the resistance heating element embedded in a ceramic substrate, and which interrupts current to the resistance heating element when detecting that the heater main body 10 has been heated to a predetermined temperature or higher. This liquid heater unit 50 comprises a heater case 52, having an inlet 53 and an outlet 54 for a liquid W, and the ceramic heater 1, and causes the liquid W flowing in through the inlet 53 to be heated by the ceramic heater 1 and flow out of the outlet 54.

57. 发明专利

JPH08114357A HEATER DEVICE FOR HEATING LIQUID 失效
公开(公告)号：JPH08114357A
公开(公告)日：1996-05-07
申请号：JP17679895
申请日：1995-06-19
申请人： NGK SPARK PLUG CO
发明人： ISHIDA NOBORU , KITANOYA SHOJI
IPC分类号： H05B3/14 , F24H1/18 , F24H1/20 , F24H9/18
摘要： PURPOSE: To provide a heater device for heating liquid in which a ceramic heater within a case in hardly exposed from the liquid surface when flowing of liquid is stopped and further the ceramic heater is restricted in its cracking. CONSTITUTION: A heater device 1 for heating liquid is constructed such that a ceramic heater 5 is installed within a heater case 2 having a liquid inlet port 3 and a liquid outlet port 4, liquid L flowing into the case through the inlet port 3 is heated by the ceramic heater 5 and then the heated liquid is flowed out of the outlet port 4. In this case, the ceramic heater 5 is arranged at a lower location then the inlet port 3 and the outlet port 4, even if a pressure within the case 2 is increased due to boiling of the liquid L and the like and the liquid L is flowed out of either the inlet port 3 or the outlet port 4, the liquid L is left within the case 2 and the ceramic heater 5 is hardly exposed out of the liquid plane, resulting in that occurrence of crack is restricted.

58. 发明专利

JPH07133168A JOINED BODY OF CERAMIC AND METAL 失效
公开(公告)号：JPH07133168A
公开(公告)日：1995-05-23
申请号：JP29749693
申请日：1993-11-02
申请人： NGK SPARK PLUG CO
发明人： ISHIDA NOBORU , MORI SHIGEKI
IPC分类号： B23P11/00 , C04B37/02 , F01D5/28 , F01D5/30 , F01D7/00
摘要： PURPOSE:To produce the joined body easy to force-fit with a low load and hardly causes reduction of a retention force at high temp. by providing the hole having smaller diameter than the tip of a ceramic member at the recessed part bottom of the metallic member where the ceramic member is force-fitted. CONSTITUTION:When the projecting part 31 of the ceramic member 3 being the turbine of a turbine rotor is force-fitted into the recessed part 21 of the metallic member 2 made of the material having / deg.C coefficient of thermal expansion alpha which is the rotary shaft of the turbine, and when the projecting parts 31 of the ceramic member 3 has a chamfer, the hole 4 having smaller diameter than the diameter D after executing chamfering is formed at the recessed part of the metallic member 2. When the volume of the hole is V, the sectional area of the ceramic at a force-fitted part is S and a length is L, the projecting part 31 is force-fitted so that V>=(1/10)S.L is satisfied, and the coaxial rate of the center of the outer peripheral of the bearing of the metallic member 2 and the center of the hole 4 is

59. 发明专利

JPH06173956A ROLLING BEARING 失效
公开(公告)号：JPH06173956A
公开(公告)日：1994-06-21
申请号：JP17133291
申请日：1991-07-11
申请人： NGK SPARK PLUG CO , NIPPON SEIKO KK
发明人： YOSHIKAWA TAKAYA , ISHIDA NOBORU , MIYAKE NOBUHIKO
IPC分类号： C04B33/00 , F16C33/32 , F16C33/34 , F16C33/44 , F16C33/56 , F16C33/62
摘要： PURPOSE:To suppress the occurrence of a seizure due to the abrasion of rolling elements and a cage. CONSTITUTION:A cage 5 made of polyimide resin is inserted on the inside of an outer ring 3 made of steel, balls 7 of a ceramic material mainly made of silicon nitride are inserted into pockets 5a of the cage 5, and an inner ring 9 made of steel is inserted on its inside. The balls 7 are made of a ceramic material, they are lightweight, they are not applied with large friction force, and they are excellent in abrasion resistance. The cage 5 is made of polyimide, and it rarely generates friction heat, reduces the fluidity of a lubricant, and generates abrasion dust. The polyimide constituting the cage 5 is not melted easily.

60. 发明专利

JPH0329031B2 失效
公开(公告)号：JPH0329031B2
公开(公告)日：1991-04-22
申请号：JP2968585
申请日：1985-02-18
申请人： NGK SPARK PLUG CO
发明人： ISHIDA NOBORU , ITO MASAYA , KAWAMURA MITSUYOSHI
IPC分类号： B23K1/19 , B23P15/02 , C04B37/02 , F01D5/02 , F02F7/00

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