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1. 发明专利

JPH07158483A FUEL INJECTION CONTROL METHOD FOR DIESEL ENGINE 失效
公开(公告)号：JPH07158483A
公开(公告)日：1995-06-20
申请号：JP34064593
申请日：1993-12-08
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： TAKIGAWA MASAHIRO , ITO TOSHIHIKO , YOSHINAGA TORU , SUZUKI FUMITADA , HISATOMI SHIGETAKA , YAMADA MITSUMASA
IPC分类号： F02M25/07 , F02B3/06 , F02D21/08 , F02D41/02 , F02D41/10 , F02D41/38
摘要： PURPOSE:To improve accelerating property and prevent generation of smoke by comparing a referential injection amount with the maximum injection amount, and setting the smaller amount thereof as a final injection amount, and increasing the maximum injection amount according to the difference between pre-ratio and post-ration when the referential injection amount exceeds the maximum injection amount. CONSTITUTION:An engine exhaust pipe P2 is connected to an engine intake pipe P1 through an EGR passing point P3 which is provided with an EGR valve 2. The EGR valve 2 is driving- controlled by an electric control device 1 through a negative pressure control valve 3. In the electronic control device 1, an injection nozzle 6 is driving-controlled through a fuel injection pump 5 on the basis of a signal which is detected from an intake air amount sensor 4 and the like. At the time, a referential injection amount which is calculated from accelerating degree and engine rotating speed is compared with a maximum injection amount which is calculated from new air intake air amount and engine rotating speed, the smaller injection amount is served as a final injection amount. When the referential injection amount exceed the maximum injection amount, the maximum injection amount is increased according to the difference between the ratio just when the referential injection amount exceeds the maximum injection amount, and the ratio before the referential injection amount exceeds the maximum injection amount.

2. 发明专利

JPS59190461A Atmospheric pressure compensated vacuum control valve 失效
标题翻译：大气压力补偿真空控制阀
公开(公告)号：JPS59190461A
公开(公告)日：1984-10-29
申请号：JP6341683
申请日：1983-04-11
申请人： Nippon Soken Inc , Toyota Motor Corp
发明人： SEKIGUCHI KIYONORI , TANAKA TAKESHI , KAWAGOE MICHIO , YAMADA MITSUMASA
IPC分类号： F02D35/00 , F02M25/07 , F16K31/06
CPC分类号： F02D21/08 , F02M26/57
摘要： PURPOSE: To reduce the cost of components in a vacuum control valve and as well to make it possible to fabricate the control valve in a technically simple way, by providing a first partitioning valve for communicating between a vacuum source and a control vacumm chamber and as well a second partitioning valve for communicating between the control vacuum chamber and an atmospheric pressure chamber.
CONSTITUTION: A vacuum pump 20 is used as a vacuum source. A control vacuum port 102 communicates between a control vacuum chamber 400 and an EGR valve body 60. A first partitioning valve 203 is disposed in a second partitioning valve 201. This first partitioning valve 203 communicates with the vacuum source and the control vacuum pressure chamber 400, and the second partitioning valve 201 communicates the control vacuum pressure chamber 400 and an atmospheric pressure chamber 500. A signal vacuum chamber 600 serves as an acutuator for opening and closing the first and second partitioning valves 203, 201. With this arrangement, the cost of components in the atmospheric pressure compensated vacuum control valve may be reduced, and as well, the control valve may be fabricated in a technically simple way.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为了降低真空控制阀中部件的成本，并且以技术上简单的方式可以制造控制阀，通过提供用于在真空源和控制真空室之间连通的第一分隔阀和以及用于在控制真空室和大气压力室之间连通的第二分隔阀。构成：真空泵20用作真空源。控制真空口102在控制真空室400和EGR阀体60之间连通。第一分隔阀203设置在第二分隔阀201中。该第一分隔阀203与真空源和控制真空压力室400连通并且第二分隔阀201与控制真空压力室400和大气压力室500连通。信号真空室600用作打开和关闭第一和第二分隔阀203,201的通气器。通过这种布置，成本可以减小大气压补偿真空控制阀中的部件，并且也可以以技术上简单的方式制造控制阀。

3. 发明专利

JPH11230872A GAS DILUTING APPARATUS 失效
公开(公告)号：JPH11230872A
公开(公告)日：1999-08-27
申请号：JP3312398
申请日：1998-02-16
申请人： TOYOTA MOTOR CORP
发明人： YAMADA MITSUMASA , NIREI YASUYUKI
IPC分类号： G01N1/22 , B01F3/02 , B01F15/04 , G05D11/13
摘要： PROBLEM TO BE SOLVED: To sample a gas to be analyzed of an accurate amount by mixing the gas to be analyzed of an equal amount to a sampled amount of a diluting gas with the diluting gas. SOLUTION: A control circuit 7 operates an air sampling pump 10 to sample an air of an amount proportional to an exhaust gas flow rate to be detected by an exhaust gas flow rate sensor 16 from an air introducing tube 3 and controls an air sampling controller 9. Thus, since a part of the air introduced from the tube 3 is sampled at an upstream side of a dilute tube 2, the exhaust gas of an amount corresponding to the sampled air amount is introduced into the tube 2 via a gas introducing tube 5. This exhaust gas is mixed with the air in the tube 2. A mixed gas of the exhaust gas and the air is supplied to an exhaust gas analyzer via a mixed gas exhaust tube 4. And, it is controlled so that the mixed gas exhaust amount becomes equal to the air introducing amount. Thus, only a detecting error of the air sampled amount of the controller 9 affects an influence to the exhaust gas introducing amount, and its value is very small. Accordingly, the exhaust gas of more accurate amount can be introduced into the dilute tube.

4. 发明专利

JP2003028851A Measuring method for sulfur compound in exhaust gas 审中-公开
标题翻译：排气中硫化合物的测量方法
公开(公告)号：JP2003028851A
公开(公告)日：2003-01-29
申请号：JP2001250896
申请日：2001-07-16
申请人： F Techno:Kk , Toyota Motor Corp , トヨタ自動車株式会社 , 有限会社エフテクノ
发明人： NONAKA TOMOYUKI , TANAKA TOSHIAKI , YAMADA MITSUMASA
IPC分类号： G01N31/00 , G01N21/78
摘要： PROBLEM TO BE SOLVED: To provide a method in which the concentration of a sulfur compound in a trace amount contained in an exhaust gas, especially in an automobile exhaust gas, can be measured stably and with satisfactory accuracy.
SOLUTION: The measuring method for the sulfur compound in the exhaust gas comprises a step wherein a fuel gas containing hydrogen is burned by a hydrogen flame burner while a combustion support gas is being supplied, a sample gas containing the sulfur compound is supplied into a hydrogen flame and sulfur suboxide is generated, a step wherein the generated sulfur suboxide is taken out form the hydrogen flame so as to be supplied to an ozone oxide cell, the sulfur suboxide is reacted with ozone and sulfur dioxide in an excited state is generated and a step in which the luminous intensity in the transition to a ground state of the sulfur dioxide in the excited state is measured. Nitrogen and oxygen are added to the fuel gas containing the hydrogen.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种能够稳定且准确地测量废气中特别是汽车废气中的微量的硫化合物浓度的方法。解决方案：废气中硫化合物的测量方法包括一个步骤，其中在供应燃烧载体气体的同时，通过氢火焰燃烧器燃烧含有氢的燃料气体，将含有硫化合物的样品气体供应到氢气产生火焰和低硫低硫化物，其中所产生的低硫氧化物从氢火焰中取出以供应到臭氧氧化物电池，硫氧化物与臭氧反应，产生激发态的二氧化硫，测量在激发态的二氧化硫的过渡到过渡状态的发光强度的步骤。氮气和氧气被加到含有氢气的燃料气体中。

5. 发明专利

JPH06229236A EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH06229236A
公开(公告)日：1994-08-16
申请号：JP1641493
申请日：1993-02-03
申请人： TOYOTA MOTOR CORP
发明人： KANEKO SATOSHI , TANAKA TOSHIAKI , YAMADA MITSUMASA
IPC分类号： F01N3/28 , F01N3/10 , F01N3/24 , F02B3/06
摘要： PURPOSE:To reduce generation of odor of during idle operation after running, in a diesel-engine having a Pt base catalyst. CONSTITUTION:A Pd base catalyst 2 is located in an exhaust system 3 incorporating a Pt base catalyst 1 in a diesel engine, just downstream of the Pt BASE catalyst. NO components of NOx is turned into NO2 which is then decomposed of the Pd base catalyst 2 downstream of the Pt base catalyst 1 so as to be soon turned into NO, thereby it is possible to reduce oxidic odor caused by NO2.

6. 发明专利

JPS5726256A Exhaust gas recycling controller of diesel engine 失效
标题翻译：柴油发动机排气回收控制器
公开(公告)号：JPS5726256A
公开(公告)日：1982-02-12
申请号：JP10203380
申请日：1980-07-25
申请人： Toyota Motor Corp
发明人： YAMADA MITSUMASA , SUGIYAMA TOSHIHISA
IPC分类号： F02M25/07 , F02B3/06
CPC分类号： F02B3/06
摘要： PURPOSE: To provide exact EGR in accordance with the engine load, by controlling diaphragms equipped with two negative pressure chambers each for governing EGR valves through negative pressure controlled according to the engine conditions.
CONSTITUTION: An exhaust mainfold 10 and suction tube 6 of an engine 1 are communicated with each other through an EGR conduit 14 having an EGR valve 12. A throttle valve 24 is set, upstream of an exhaust injection port 6', to the suction tube 6. Both valves 12, 24 are controlled by the first diaphragm 20 with negative pressure chambers 25, 26 and the second diaphragm 34 with negative pressure chambes 39, 40, in accordance with negative pressure introduced in these chambers. The first pressure chambers 25, 39 and the second pressure chambers 26, 40 are connected with a vacuum pump 43 through pressure reversing valves 51, 55 and water temperature sensing valve 4, respectively, the pressure reversing valves 51, 55 being controlled by a controller 61 according to the engine load.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：根据发动机负载，通过控制装有两个负压室的隔膜来提供精确的EGR，每个负压室通过根据发动机条件控制的负压控制EGR阀。构成：发动机1的排气歧管10和吸入管6通过具有EGR阀12的EGR导管14彼此连通。节流阀24设置在排气喷射口6'的上游到吸入管两个阀12,24由具有负压室25,26的第一隔膜20和带有负压倒角39,40的第二隔膜34根据在这些室中引入的负压来控制。第一压力室25,39和第二压力室26,40分别通过压力换向阀51,55和水温感测阀4与真空泵43连接，压力换向阀51,55由控制器控制 61根据发动机负荷。

7. 发明专利

JPH08200164A EXHAUST GAS REFLUX CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH08200164A
公开(公告)日：1996-08-06
申请号：JP1092495
申请日：1995-01-26
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： HIDAKA SHIGEKI , TAKEMOTO HIDETSUGU , MATSUMURA TOSHIMI , YAMADA MITSUMASA , FUKUMA TAKAO
IPC分类号： F02M25/07 , F02B3/06
摘要： PURPOSE: To reliably reduce the generation of acceleration smoke even in a transient state containing a slow acceleration period, in an exhaust gas reflux control device for a diesel engine. CONSTITUTION: An exhaust gas reflux control device comprises conduits 15 and 17 through which a part of exhaust gas from an engine 1 is recirculated to the intake system of the engine 1; and an exhaust gas reflux control valve 11 to regulate a recirculation amount of exhaust gas through the conduits. An electronic control device 40 calculates a fundamental command value for a regulation amount of a reflux control valve 11 based on the load and the number of revolutions of the engine 1. Based on the present and a past value of a fundamental command value, a fundamental command value correction amount having reverse characteristics to the delay characteristics of the whole of a system to drive the reflux control valve 11 is calculated, and the reflux control valve 11 is driven by means of a value obtained by orderly correcting a fundamental command value by means of the calculating correction amount.

8. 发明专利

JPH0921356A EXHAUST GAS RECIRCULATION CONTROL DEVICE OF DIESEL ENGINE WITH SUPERCHARGER 失效
公开(公告)号：JPH0921356A
公开(公告)日：1997-01-21
申请号：JP16957795
申请日：1995-07-05
申请人： NIPPON SOKEN
发明人： SUZUKI FUMITADA , TAKIGAWA MASAHIRO , FUKUMA TAKAO , YAMADA MITSUMASA
IPC分类号： F02M25/07
摘要： PROBLEM TO BE SOLVED: To reduce the NOX without increasing the smoke at the transient time, by correcting a basic target exhaust gas recirculating amount, by the amount corresponding to the deflection amount between a basic intake pipe inner pressure determined from the engine rotation frequency and the fuel injection amount, and the intake pipe inner pressure measured actually. SOLUTION: A basic intake exhaust gas recirculating amount calculated by a basic target exhaust gas recirculating amount calculating means 22 is corrected as the amount corresponding to the intake pipe 2 inner pressure deflection amount which is calculated by basic intake pipe inner pressure calculated by the engine rotation frequency and the fuel injection amount, and the intake pipe 2 inner pressure measured by an in-pipe total intake gas amount detecting means 17, so as to obtain a final target exhaust gas recirculating amount. An exhaust gas recirculating valve 13 is operated to make the basic target exhaust gas recirculating amount calculated by an exhaust gas recirculation calculating means 21 the final target exhaust gas recirculating amount, and an adequate exhaust gas recirculating amount for the fuel injection amount is fed, even when the total exhaust gas amount flowing in the intake pipe 2 is changed.

9. 发明专利

JPS5810145A DISCHARGED GAS RECIRCULATION CONTROL SYSTEM FOR DIESEL ENGINE 失效
公开(公告)号：JPS5810145A
公开(公告)日：1983-01-20
申请号：JP10691881
申请日：1981-07-10
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： SEKIGUCHI KIYONORI , ITOU TOSHIHIKO , TANAKA TAKESHI , KAWAI HISASHI , YAMADA MITSUMASA , KAWAGOE MICHIO , TANAKA MASAAKI
IPC分类号： F02M25/07 , F02B3/06 , F02D21/08
摘要： PURPOSE:To prevent an increasing of HC and perform a suitable EGR by a method wherein a number of revolution of engine is sensed and a volume of EGR is decreased in response to the sensed value. CONSTITUTION:Solenoid valve 6 arranged via orifice 62 in the midway part of the communication pipe between the EGR valve 1 and a specified pressure valve 2 varies a rate between an atmosphere discharging time and a negative pressure communicating time supplied from a specified pressure valve 2 and decreases a negative pressure supplied to the EGR valve 1. Controller 7 for controlling a ratio between the opening and closing times calculates a signal of the number of revolution supplied from the sensor device 8 for sensing the number of revolution of the engine and produces a rate of time of negative pressure communication of the solenoid valve 6 in response to the calculted result. Thereby, in a range of operation more than a predetermined number of revolution, a rate of EGR can be decreased as the number of revolution is increased and then an increasing of a volume of HC is prevented.

10. 发明专利

JPH07332163A EXHAUST GAS REFLUX CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH07332163A
公开(公告)日：1995-12-22
申请号：JP12128694
申请日：1994-06-02
申请人： TOYOTA MOTOR CORP
发明人： FUKUMA TAKAO , YAMADA MITSUMASA
IPC分类号： F02M25/07
摘要： PURPOSE:To sense clogging of an exhaust reflux passage accurately without resulting in cost-up by judging that a clogging has occurred in the passage when the control amount for the target degree of opening of an EGR valve has increased a certain value over the control value of the EGR valve corresponding to the exhaust gas rate-of- flow characteristics. CONSTITUTION:An exhaust gas feedback control device is structured so that an EGR valve 9 is installed in an EGR passage 8 which sends part of the exhaust gas back to the suction line, and is equipped with operating condition sensing means including a suction pipe pressure sensor 6, lift sensor 17, throttle opening sensor 21, etc., and the sensing signals given by them are fed to a control circuit 10. The target degree of opening for the EGR valve is calculated in accordance with the operating condition, and the control amount of the EGR valve is adjusted so that the opening of the EGR valve sensed by the lift sensor 17 becomes the target value. It is judged that a clogging has occurred in the passage 8 when the control amount of the valve 9 has increased a certain width over the control amount of the valve 9 corresponding to the exhaust gas rate-of-flow characteristics according to the degree of opening of the valve 9.

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