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1. 发明专利

JPS578311A METHOD AND DEVICE FOR DECREASING DISCHARGED QUANTITY OF DIESEL PARTICULATES 失效
公开(公告)号：JPS578311A
公开(公告)日：1982-01-16
申请号：JP8317680
申请日：1980-06-19
申请人： TOYOTA MOTOR CO LTD , TOYODA CHUO KENKYUSHO KK
发明人： OOISHI KIYOHIKO , SUZUKI YOSHIHIRO , OBATA KIYOSHI , MATSUMOTO SHINICHI , YOSHIDA AOGU , OGISO TAKESHI
IPC分类号： B01D46/30 , F01N3/02 , F01N3/027 , F01N3/032 , F01N3/22 , F01N9/00 , F02B3/06
摘要： PURPOSE:To facilitate the regeneration of the exhaust particle collection filter of a diesel engine, by detecting the clogging of the filter and heating exhaust particles to burn. CONSTITUTION:The exhaust gas G of a diesel engine is purified by a trapper 14 which acts as a particle collection filter. The purified exhaust gas is discharged to the outside. When the trapper 14 becomes clogged so that the back pressure is heightened, the clogging is detected by a back pressure sensor 21. The conditions of the engine are applied to a controller 20. The controller 20 can find out that the trapper 14 needs to be regenerated. In that case, the controller 20 operates an actuator 16 and an electric heater 15 at the upstriam end of the trapper 14 and drives a secondary air supply pump 19 to burn exhaust particles in the trapper 14 when the engine is stopped. The controller 20 stops the operation and driving when it is detected by temperature sensors 24, 25 that the exhaust particles are burned up to the downstream end of the trapper 14. The trapper 14 is thus regenerated.

2. 发明专利

JPS5851257A EXHAUST GAS RECIRCULATING SYSTEM FOR DIESEL ENGINE 失效
公开(公告)号：JPS5851257A
公开(公告)日：1983-03-25
申请号：JP15113081
申请日：1981-09-22
申请人： TOYOTA MOTOR CO LTD
发明人： OBATA KIYOSHI , TAKAMA KENICHIROU
IPC分类号： F02M25/07 , F02B3/06 , F02D21/08
摘要： PURPOSE:To prevent excessive exhaust gas recirculation by a method wherein the system is controlled so as to close an EGR valve when clogging of a particle arrester is detected by the increase of the pressure of the exhaust gas in the system equipped with the arrester, arresting the particles in the exhaust gas, in an exhaust path. CONSTITUTION:Upon operating the diesel engine 1, a duty ratio is determined by a control unit 20 based on the ouptut data of an engine load sensor 21 and an engine revolving number sensor 22 while a pulse signal based on the valve thereof is outputted into a vaccum control valve 16. Whereby, a vacuum in accordance with said pulse signal is introduced into a vacuum chamber for the EGR valve 10 to open the EGR valve 10, and predetermined exhaust gas is recirculated into an exhaust gas mainfold 3 through a conduit 9. Thereafter, when the particles arrester 5 is clogged and a pressure switch 23 is put ON by the increase of the exhaust gas pressure at the upstream side of the arrester, the control unit 20 outputs a signal to put OFF the vacuum control valve 16 and closes the EGR valve 10 to stop the recirculation of the exhaust gas.

3. 发明专利

JPS588219A COLLECTING AND PURIFYING SYSTEM OF CORPUSCLES IN EXHAUST GAS 失效
公开(公告)号：JPS588219A
公开(公告)日：1983-01-18
申请号：JP10653481
申请日：1981-07-08
申请人： NIPPON DENSO CO , TOYOTA MOTOR CO LTD
发明人： KAWAGUCHI SEIJI , NOMURA ETSUJI , FUKAZAWA TAKESHI , YAMAGUCHI SHIYUNZOU , OOISHI KIYOHIKO , OBATA KIYOSHI , MOTOSUGI KATSUHIKO
IPC分类号： F01N3/02 , F01N3/027
摘要： PURPOSE:To collect corpuscles contained in exhausts out of a Diesel engine, by setting a calorific resistor with the upstream side of a filter's gas flow divided into at least three-area sections and exercising continuous rating heat controls over these divided resistors in order. CONSTITUTION:Three-groove structure bodies 21a-21c are constituted so as to divide the upstream surface of a flow of gas in a ceramic filter 13 into at least three-area sections, calorific resistors 15a, 15b and 15c are laid in them respectively, and these resistors are subjected to heat control upon being energized with current in turn. With this, since the calorific resistors 15a, 15b and 15c are supplied with heating power in order, the electric energy required to regenerate filter functions also gets off with a small one only. In addition, the regenerating portion also comes into a state of continuously collecting corpuscles from exhaust gases during regeneration so that filter's regenerative functions too may be highly streamlined, permitting miniaturization of the filter unit.

4. 发明专利

JPS5525524A ELECTRONIC CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS5525524A
公开(公告)日：1980-02-23
申请号：JP9751878
申请日：1978-08-10
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： MATSUI TAKESHI , KOHAMA TOKIO , KAWAI HISASHI , NISHIMATSU AKIRA , INA TOSHIKAZU , NOHIRA HIDETAKA , OBATA KIYOSHI
IPC分类号： F02D21/08 , F02D41/14 , F02D41/24 , F02D43/00 , F02M7/24 , F02M25/07
摘要： PURPOSE:To interlock an exhaust gas recirculating regulator with a carbureter flow regulator in internal combustion engine to control the amount of circulating gas in response to the operative condition of engine while mainting optimum air-fuel ratio in response to the recirculating amount to reduce noxious components. CONSTITUTION:Intake and exhaust pipes 15, 16 of engine E communicate to each other through communicating pipe 50 comprising the first and second flow regulators 40, 60 of exhaust gas recirculating device 10 and a pressure regulator 50. Also, a fuel passes 21 of carbureter 20 communicates to an auxiliary air path 23 closed and opened by a main air path 22 and air flow regulator 30. While negative pressure from a pipe 15a and the atmosphere from the opening 56b of pressure regulator 50 are introduced into servo chambers 34, 43, 63 of the respective regulators 30, 40, 60 by the movement of electromagnetic valves 70a, 70b, the valves 70a, 70b are driven by signals of rotational frequency detector 80, negative pressure detector 90a and gas pressure detector 90b.

5. 发明专利

JPS53141827A EXHAUST RECIRCULATION SYSTEM 失效
公开(公告)号：JPS53141827A
公开(公告)日：1978-12-11
申请号：JP5629277
申请日：1977-05-18
申请人： TOYOTA MOTOR CO LTD
发明人： NOHIRA HIDETAKA , OBATA KIYOSHI , NAKANO JIROU
IPC分类号： F02D21/08 , F02M25/07
摘要： PURPOSE:To dwindle engenderment of NOx in the exhaust by controlling a control valve by each sensor installed in the internal combustion engine, and by properly controlling exhaust gain to be recirculated into inhaled air, etc.

6. 发明专利

JPS588218A EXHAUST CORPUSCLE PURIFIER FOR DIESEL ENGINE 失效
公开(公告)号：JPS588218A
公开(公告)日：1983-01-18
申请号：JP10511181
申请日：1981-07-07
申请人： TOYOTA MOTOR CO LTD
发明人： TAKAMA KENICHIROU , OOISHI KIYOHIKO , OBATA KIYOSHI
IPC分类号： B01D46/42 , F01N3/02 , F01N3/027
摘要： PURPOSE:To improve durability and safety and simplify structure, by making up a collecting material with a ceramic form of three-dimensional reticulate structure and installing a wall which sections an exhaust gas passage of the collecting material into plural lines. CONSTITUTION:A collecting material 28 is made up of a ceramic form while a wall sectioning an exhaust gas passage of a collecting material 28 into plural lines is installed and furthermore plural electric heater elements 26 are dispersedly arranged each at the upstream end of the collecting material 28 in order to meet each passage of the material 28. With this, the collecting material 28 gets strengthened itself and, what is more, combustion of the exhuast corpuscle is not diffused around wastefully, shortening the regenerating time as combustion is transmitted still earlier in the axial direction. In addition, since a drift of exhaust gas is obviated by dint of the wall 29, there is no fear of producing a portion of incomplete combustion at all.

7. 发明专利

JPS57210114A PURIFIER FOR EXHAUST PARTICLES OF DIESEL ENGINE 失效
公开(公告)号：JPS57210114A
公开(公告)日：1982-12-23
申请号：JP9521581
申请日：1981-06-22
申请人： TOYOTA MOTOR CO LTD
发明人： OOISHI KIYOHIKO , OBATA KIYOSHI , TAKAMA KENICHIROU
IPC分类号： B01D46/42 , F01N3/02 , F01N3/022 , F01N3/027 , F01N9/00 , F02B3/06
摘要： PURPOSE:To provide an exhaust particle purifier of high durability and safety and simple structure, by providing an exhaust particle collector in the exhaust passage of a Diesel engine and dispersedly arranging a plurality of electric heaters on the upstream side of the collector. CONSTITUTION:A trap vessel 12, which has a collector 20 inside, is provided by integral casting or the like in the exhaust passage of a Diesel engine 5 so that the trap vessel is located downstream to the confluence part of an exhaust manifold 9 or the like. A plurality of electric heaters 16 are dispersedly arranged on the upstream side of the trap collector 20. A ceramic filter 17 is provided upstream to the electric heaters 16 to pinch them between the filter and the collector 20. A power source 21, a heater control relay 22 and a central processing unit are connected to power supply terminals 19' for the electric heaters 16 to supply electricity thereto at required time to periodically incinerate exhaust particles caught by the collector 20, to regenerate it.

8. 发明专利

JPS56132416A DEVICE FOR DISPOSING OF EXHAUST GAS OF DIESEL ENGINE 失效
公开(公告)号：JPS56132416A
公开(公告)日：1981-10-16
申请号：JP3393080
申请日：1980-03-19
申请人： TOYOTA MOTOR CO LTD
发明人： INOUE TADAHIRO , OOISHI KIYOHIKO , OBATA KIYOSHI
IPC分类号： F01N3/02
摘要： PURPOSE:To reduce the heat loss of a particle trapper for collecting and removing the exhaust carbon of a diesel engine, by blowing a flame from the interior of the trapper and effecting appropriate combustion control. CONSTITUTION:Exhaust gas from the cylinders of a diesel engine flows into particle trappers through a pipe 12. The number of the trappers is two. The trappers are installed in a right and a left positions. Exhaust passages are shifted by opening or closing change-over valves 24A, 24B. When the valve 24A is open, the exhaust gas flows outwards from the central part of a cylindrical filter 18A, as shown by arrows A, B, so that the exhaust gas is released after it is removed of particles by the filter 18A. A burner 26B is provided at the central part of the side of a filter 18B, into which the exhaust gas does not enter. Fuel and air are supplied from a fuel pump 34 and an air pump 40 through change-over valves 32, 38 so that the fuel is burned. The burner 26B is controlled to optimum by an exhaust back pressure signal 62, the inlet temperature of a thermosensitive section 70B, the outlet temperature of a thermosensitive section 74B and an incineration time signal.

9. 发明专利

JPS5698517A APPARATUS FOR REMOVING FINE PARTICLES CONTAINED IN EXHAUST GAS OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS5698517A
公开(公告)日：1981-08-08
申请号：JP50780
申请日：1980-01-09
申请人： TOYOTA MOTOR CO LTD
发明人： OBATA KIYOSHI
IPC分类号： F01N3/02 , F01N3/025 , F01N3/027 , F01N3/032 , F01N3/18 , F01N3/36 , F02B3/06
摘要： PURPOSE:To remove fine particles capture by trappers by combusting the same, by communicating two trappers to a fuel supply port selectively by means of a selector valve, and thereby supplying auxiliary fuel selectively to the two trappers. CONSTITUTION:Exhaust gas is introduced into a trapper container 10 from the direction shown by an arrow A in the drawing and discharged to the outside from the other end of the container 10. The container 10 is divided into two separate chambers by a partition wall 12. In these two chambers, there are placed trappers 14a, 14b made of foamed ceramic material. On the upstream side of these trappers 14a, 14b, there is provided a selector valve 16 for selecting the exhaust-gas flow to the trappers. Further, adjacently of the trappers 14a, 14b on the upstream side thereof, there are provided heaters 25 for heating fine particles captures by the trappers. A fuel supply port 26 opened in the container 10 is connected to a fuel injection valve 30. A fuel supply pipe 32a is disposed at one side of the selector valve 16 and another fuel sypply pipe 32b is disposed at the other side of the valve 16 for supplying fuel selectively to the trapper 14a or 14b.

10. 发明专利

JPS5692318A APPARATUS FOR CAPTURING FINE PARTICLES CONTAINED IN EXHAUST GAS OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS5692318A
公开(公告)日：1981-07-27
申请号：JP16760479
申请日：1979-12-25
申请人： TOYOTA MOTOR CO LTD
发明人： OBATA KIYOSHI
IPC分类号： F01N3/02
摘要： PURPOSE:To accomplish optimal combustion by providing a hole of an appropriate size in a change-over valve in an apparatus in two trapper are disposed on both sides thereof and fine particles captured by one trapper closed by a change-over valve is removed by combustion. CONSTITUTION:During ondinary operation of a vehicle, a change-over valve 16 occupies the first position or the second position for passing exhaust gas to either of two trappers 14a or 14b which are disposed side by side to each other. In this state, fine particles contained in exhaust gas are captured by one trapper 14a or 14b through which exhaust gas is passed. When the time of vehicle operation reaches a certain length and the fine particle capturing capacity of said one trapper is saturated, the change-over valve 16 is shifted to the other trapper 14b or 14a by a handle 20 which is driven by a driving means (not shown), and current is supplied to a heater 22a or 22b disposed in the closed trapper 14a or 14b. At the same time, a controlled amount of gas is supplied from a hole 30 formed in the valve 16 for combusting and removing the captured fine particles.

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