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1. 发明专利

JP2000046799A ION SENSOR 失效
公开(公告)号：JP2000046799A
公开(公告)日：2000-02-18
申请号：JP22528598
申请日：1998-07-24
申请人： EBARA KATSUO , ZEXEL CORP
发明人： EBARA KATSUO , HARA SHINICHI , HARADA TOSHIO , KASUKAWA KAZUHISA
IPC分类号： G01R29/24 , G01N27/60
摘要： PROBLEM TO BE SOLVED: To provide an air ion sensor of a small size at a low cost to be equipped even with a domestic or on-vehicle air cleaner. SOLUTION: Piezoelectric ceramics 1 having permanently charged and separated positive and negative poles 1A, 1B are placed in the air, and electrodes 2 are opposed via a predetermined gap at the poles 1A, 1B of the ceramics 1. Numbers of anions and cations attracted to the poles 1A, 1B of the ceramics 1 are estimated by measuring electrostatic induction voltages generated at the electrodes 2, and thus, an ion amount in the air is estimated.

2. 发明专利

JPH03195962A NITROGEN OXIDE CONCENTRATION MEASURING APPARATUS 失效
公开(公告)号：JPH03195962A
公开(公告)日：1991-08-27
申请号：JP33484589
申请日：1989-12-26
申请人： ZEXEL CORP
发明人： KASUKAWA KAZUHISA
IPC分类号： G01N27/416
摘要： PURPOSE:To measure only the concn. of a nitrogen oxide at a low cost by applying a voltage equal to or below 0.5 V between both the electrodes of an oxygen pump. CONSTITUTION:When a voltage equal to or below 0.5 V is applied between both the electrodes 4B and 4C of an oxygen pump 4, simple substance oxygen in a gas to be measured in a space S1 is pumped by a pump 4 out of a cell 1. At the same time, nitrogen oxide is electrolyzed into oxygen and nitrogen on the electrodes in the cell 1 and the electrolyzed oxygen is pumped out of the cell 1 like the simple substance oxygen. Since the voltage between the electrodes 4B and 4C is restricted to 0.5 V or below, the other oxides are not electrolyzed and only oxygen in the nitrogen oxide is pumped out by the pump 4. Thus, a current corresponding to the quantity of discharge oxygen flows between the electrodes 4B and 4C and, by measuring the current by an ammeter 6, the total quantity of the simple substance oxygen in the gas to be measured and oxygen in the nitrogen oxide can be measured.

3. 发明专利

JPH09329070A FUEL INJECTION NOZZLE FOR IN-CYLINDER GASOLINE INJECTION ENGINE 失效
公开(公告)号：JPH09329070A
公开(公告)日：1997-12-22
申请号：JP17072196
申请日：1996-06-11
申请人： ZEXEL CORP
发明人： KUSHIDA TAKEO , OKUYAMA SUSUMU , KASUKAWA KAZUHISA
IPC分类号： F02M51/06 , F02M51/08 , F02M61/18
摘要： PROBLEM TO BE SOLVED: To prevent such fuel, as being attached to the tip end part of an orifice plate due to temperature drop on the tip end part thereof, from being accumulated as carbon deposit by composing the orifice plate with zirconia. SOLUTION: An orifice plate 22 is made of zirconia (ZrO2 , zirconium oxide). Thereby the orifice plate 22 formed by zirconia with low thermal conductivity protects a nozzle body 2 located around an injection hole 8 and an injecting opening part 7 from the cylinder 12 of an engine. And simultaneously, the orifice plate 22 part makes its temperature higher in comparison with other part on account of gasoline combustion inside of the cylinder 12 so as to burn out fuel struck to the orifice plate 22, not allowing carbon to adhere toe the injection hole 8 part, so as to prevent carbon deposit generation. Thus, accumulation of carbon deposit on the injection hole 8 and also on the injection opening part 7 can be prevented.

4. 发明专利

JPH0893602A INJECTION TIMING DETECTING DEVICE OF FUEL INJECTOR 失效
公开(公告)号：JPH0893602A
公开(公告)日：1996-04-09
申请号：JP25159994
申请日：1994-09-21
申请人： ZEXEL CORP
发明人： SAWAKI TOSHIKI , UNOSAWA AKIRA , KASUKAWA KAZUHISA
IPC分类号： F02M63/00 , F02M65/00
摘要： PURPOSE: To easily assemble an injection timing detection device integrated into a spring storing hole so as to prevent decrease in detection accuracy. CONSTITUTION: An electrode plate 12 is arranged on at the side of a nozzle spring 23, and an earth plate 13 is arranged to be brought in contact with the bottom face of a spring storing hole 22 in the case of an injection timing detecting device 1 provided with a piezoelectric element 11, the electrode plate 12, and a setting plate 13. Respective contact faces between the earth plate 13 and the bottom face of the spring storing hole 22 are formed in tapered faces 13b and 22a fitted to each other.

5. 发明专利

JPH09236068A FUEL INJECTION NOZZLE 失效
公开(公告)号：JPH09236068A
公开(公告)日：1997-09-09
申请号：JP6385596
申请日：1996-02-27
申请人： ZEXEL CORP
发明人： SHIGIHARA HIDEKATSU , KASUKAWA KAZUHISA
IPC分类号： F02M61/18
摘要： PROBLEM TO BE SOLVED: To form an injection hole as a finely small diameter, uniformize work accuracy, and improve mass productivity by constituting an orifice plate of a fuel injection nozzle out of a sintered body. SOLUTION: A fuel injection nozzle 20 has an orifice plate 21 and a plate holder 22 in a tip part of a nozzle body 2, and the plate holder 22 is installed on the nozzle body 2 by beam welding, and the orifice plate 21 is installed in the tip part of the nozzle body 2. A nozzle assembly 23 is composed of the nozzle body 2, the orifice plate 21 and the plate holder 22. Among these, when the orifice plate 12 is composed of a sintered body, an injection hole can be finely worked when in a green sheet condition in its manufacturing process. Therefore, since flow rate control is not performed by a hole diameter, but can be performed by the number of injection holes, kinds of diameters of a tool such as a punch to work the injection hole can be reduced.

6. 发明专利

JPH0477656A NITROGEN OXIDE DETECTOR 失效
公开(公告)号：JPH0477656A
公开(公告)日：1992-03-11
申请号：JP19202490
申请日：1990-07-20
申请人： ZEXEL CORP
发明人： MIYAZAKI TOSHIYUKI , OGUMA MAKIO , KASUKAWA KAZUHISA
IPC分类号： G01N31/00 , G01N27/12
摘要： PURPOSE:To enable accurate detection of the amount of nitrogen oxide by a method wherein a part of an exhaust gas is extracted to be cooled within operation temperature conditions of a nygrogen oxide detection sensor and the exhaust gas is made to heat the nitrogen oxide detection sensor directly. CONSTITUTION:Exhaut gas is exhausted to be outside via a silencer through an exhaust pipe 1. A bypass pipe 2 has an exhaust takeoff port 3 opened being turned to the upstream side of the pipe 1 and is drawn outside from an opening 16 of the pipe 1. A terminal of the pipe 2 is connected to the pipe 1 again and an exhaust port 14 is opened to a joint 13 thereof. The pipe 2 is provived with a nitrogen oxide detection sensor 4 on a pipe wall thereof and a plurality of radiation fins 5 are formed on the upstream side of the sensor 4 to cool the exhaust gas passing through the sensor 4. Thus, the exhaust gas is cooled with the radiation fins 5 and passes over the sensor 4 thereby enabling accurate detection of the amount of the nitrogen oxide.

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