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21. 发明专利

JPH0286941A NITROGEN OXIDE ABATING METHOD AND DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0286941A
公开(公告)日：1990-03-27
申请号：JP23803588
申请日：1988-09-22
申请人： TOYOTA CENTRAL RES & DEV
发明人： AOYAMA TARO , MIZUTA JUNICHI , SUNAMI SEIICHI , OSHIMA YUJIRO
IPC分类号： F02D41/22 , F02B3/06 , F02B15/00 , F02D1/02 , F02D41/34 , F02D41/38 , F02D41/40
摘要： PURPOSE:To enhance an abating effect of nitrogen oxide by cooling heat of a flame produced by main injection with the fuel spray of sub injection, suppressing its generation in the midway where the nitrogen oxide(NO) is generated by combustion, and abating the extent of exhaust of the nitrogen oxide. CONSTITUTION:At time of driving a diesel engine E1, main injection is performed in the turning downflow direction of intake air by feeding oil to an injection nozzle 8 from a main injection pump at about 15 deg.-0 deg. before a top dead center at the last period of compression strokes. The, firing of fuel subjected to the main injection is produced at a tip or both sides of spray, expanding it on an air vortex. At this time, there is a high temperature area in and around a flame tip, whereby a gas temperature is high and nitrogen oxide(NO) is produced in bulk. Next, sub injection is performed at the flame tip at about 5-20 deg. after the top dead center, and with this spray, fuel spray is fed to the high temperature area in and around the flame tip instantaneously at a high injection rate, and flame temperature is lowered by dint of heat of vaporization of the fuel spray. With this constitution, generation of the nitrogen oxide(NO) is effectively controlled.

22. 发明专利

JPS6223522A COMBUSTION CHAMBER STRUCTURE FOR INTERNAL-COMBUSTION ENGINE 失效
公开(公告)号：JPS6223522A
公开(公告)日：1987-01-31
申请号：JP16168585
申请日：1985-07-22
申请人： TOYOTA CENTRAL RES & DEV
发明人： AOYAMA TARO , OSHIMA YUJIRO
IPC分类号： F02B23/06 , F02B3/06
摘要： PURPOSE:To remove adhesion of fuel so as to improve combustion efficiency by forming a cavity located on the summit part of a piston in the vicinity of the center shaft of the piston so as to force the center of a entrance part provided in the cavity to be eccentric from the center of the piston. CONSTITUTION:At the summit part of a piston 22, a roughly-spherical cavity 24 is formed. In the cavity 24, an entrance part being smaller in its diameter d than the maximum diameter D of the cavity is provided. The center of this entrance part is made eccentric by length A from a shaft center of the maximum diameter D in the direction of an injection nozzle 26. For this reason, a throttle B at this entrance side comes to be smaller than a throttle C at the entrance side on the opposite side. In this way, the adhesion of a fuel can be removed to improve combustion efficiency.

23. 发明专利

JPH08114116A THREE WAY EXHAUST EMISSION CONTROL METHOD, CATALYTIC CONVERTER AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH08114116A
公开(公告)日：1996-05-07
申请号：JP28008094
申请日：1994-10-18
申请人： TOYOTA CENTRAL RES & DEV
发明人： YOKOTA KOJI , SAIKI MOTOHISA , KATAOKA MASAO , OSHIMA YUJIRO
IPC分类号： F01N3/28 , B01D53/86 , B01D53/94
摘要： PURPOSE: To improve the purification factor, and to enlarge the A/F window by arranging a low-oxidation active zone upstream in the exhaust flow, and arranging a high-oxidation active zone downstream, and passing the exhaust in order between them. CONSTITUTION: The exhaust 19 is led into a low-oxidation active zone 11. In this low-oxidation active zone, NOX is mainly purified, and the low-oxidation active catalyst for restricting the oxidation reaction of CO, HC is carried. In the case where the exhaust 19 exists in the lean side due to the catalyst, NOX is purified. Next, after passing the low-oxidation active zone 11, the exhaust 19 is led into a high-oxidation active zone 12. Ordinary three dimensional catalyst is carried in the high-oxidation active zone 12. In the case where the exhaust 19 exists in the rich side, NOX, CO, HC, which can not be purified in the low-oxidation active zone 11, can be purified at a degree as same as the conventional technique.

24. 发明专利

JPH07286293A GAS GENERATOR 失效
公开(公告)号：JPH07286293A
公开(公告)日：1995-10-31
申请号：JP10447494
申请日：1994-04-19
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： KAWAHARA KAZUO , SAEKI TORU , ABE KATSUJI , OSHIMA YUJIRO , MATSUSHITA SOICHI
IPC分类号： C25B1/04 , C25B15/02 , C25B15/08
摘要： PURPOSE:To provide a gas generator capable of preventing the failure due to the freezing of water (or soln.) and with the water as the raw material. CONSTITUTION:This gas generator 1 is provided with a means 41 for measuring the water temp. in an electrolytic cell 11 and a control means 40. The pressures of the generated gases 81 and 82 are utilized either in a means for discharging the water 80 in the cell 11 or in a means for resupplying water. Otherwise, the negative pressure on the suction side of an engine is utilized either in the water discharge means or in the water resupply means. Further, freezing is detected from the resistance value of the cell 11, and heat is supplied to the cell 11 or the cell 11 is stopped.

25. 发明专利

JPH05296035A 失效
公开(公告)号：JPH05296035A
公开(公告)日：1993-11-09
申请号：JP17975991
申请日：1991-07-19
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： ARAGA TOSHIMI , SUDO EIICHI , OSHIMA YUJIRO , MATSUSHITA SOICHI
IPC分类号： F01N3/24 , F01N3/36 , F02M27/02
摘要： PURPOSE:To enhance exhaust gas purifying performance with respect to the exhaust gas purifying device for an internal combustion engine provided with an afterburner in its exhaust system. CONSTITUTION:A bubbling chamber (hereinafter referred to as a chamber) 33 that extracts a low boiling point constituent whose ignitability and combustibility are good out of fuel (gasoline) is provided, and a fuel supply system 31 and an air supply system 32 that are forked from the fuel supply system 2 and the air intake system 3 of an internal combustion engine 1 are respectively connected to the chamber. The air supply system 32 is further forked on the way and a secondary air line 42 provided with a temperature-sensitive regulating valve 40 is connected to an afterburner 18. And a fuel-air mixture supply line 34 that conveys the low boiling point constituent of the fuel produced inside the chamber 33 is provided. In the afterburner 18, hydrocarbon in exhaust gas is certainly burnt and oxidized by the positive burning of the low boiling point constituent diluted to a nearly theoretical air-fuel ratio by secondary air from the secondary air line 42, and exhaust gas purifying performance is enhanced.

26. 发明专利

JPH05168856A METHOD FOR DECREASING NITROGEN OXIDE IN INTERNAL COMBUSTION ENGINE AND EQUIPMENT THEREFOR 失效
公开(公告)号：JPH05168856A
公开(公告)日：1993-07-02
申请号：JP14869092
申请日：1992-05-15
申请人： TOYOTA CENTRAL RES & DEV
发明人： OSHIMA YUJIRO , ABE KATSUJI , KAWAHARA KAZUO , YOKOTA KOJI , MURAKI HIDEAKI , FUKUI MASAYUKI
IPC分类号： B01D53/56 , B01D53/94 , F01N3/08 , F01N3/20 , F02B3/06
摘要： PURPOSE:To effectively reduce and purify nitrogen oxide irrespective of gaseous oxygen concentration in exhaust gas without ruining low fuel expenses of the engine in lean-burn engines, diesel engines, etc. CONSTITUTION:Gaseous hydrogen from a hydrogen generator 1 for generating hydrogen by electrolyzing water or steam using a conducting membrane (solid electrolyte) having a proton conducting function is supplied to the inlet side of a catalytic device 2 installed in an exhaust system Ex for catalytically reacting gaseous hydrogen with nitrogen oxide to decompose them into gaseous nitrogen and water in the presence of nitrogen oxide and gaseous oxygen in exhaust gas generated by the combustion of feed fuel in the combustion chamber of an internal engine E. Nitrogen oxide in exhaust gas is efficiently reduced by a direct reducing purification by gaseous hydrogen in the low temp. atmosphere of >=350 deg.C.

27. 发明专利

JPS61277816A INTAKE STRUCTURE OF DIESEL ENGINE 失效
公开(公告)号：JPS61277816A
公开(公告)日：1986-12-08
申请号：JP11922285
申请日：1985-05-31
申请人： TOYOTA CENTRAL RES & DEV
发明人： SUGIYAMA KATSUHIKO , OSHIMA YUJIRO
IPC分类号： F02B31/00 , F02B3/06
摘要： PURPOSE:To form the optimum swirl and permit the optimum combustion by installing a air-stream deflecting apparatus which controls the suction stream in the proper direction such as towards a recessed part, into the suction port of an engine in which a recessed part is formed at the top part of a piston. CONSTITUTION:An air-stream deflecting apparatus 18 is installed at the suction port 12 of an engine in which a recessed part 4 is formed at the center of the top part of a piston 3, and is swing-controlled by a CPU according to the engine operation state. When the engine is in low load and at low revolutional speed, the air-stream deflecting apparatus 18 is projected into the air-stream, and the suction stream is deflected to the center side of the cylinder. Therefore, the air-stream flows into the recessed part 4 of the piston under forming an eddy current, and when fuel is jetted into this part, proper combustion is obtained. In high load and at high revolutional speed, the air-stream deflecting apparatus is returned as shown as shown by the full line, and the air-stream in the cylinder is made flow into the whole range of the cylinder.

28. 发明专利

DE4230408A1 Nitrogen oxide(s) redn. in oxygen@-contg. exhaust gas - by hydrogen@ addn. and catalytic redn. 未知
公开(公告)号：DE4230408A1
公开(公告)日：1993-03-18
申请号：DE4230408
申请日：1992-09-11
申请人： AISIN SEIKI
发明人： YAMAGURO AKIRA , HARAMURA SHIGENORI , MINAMOTO NAOKI , OSHIMA YUJIRO , MURAKI HIDEAKI , ABE KATSUSHI , YOKOTA KOJI , KAWAHARA KAZUO
IPC分类号： F01N3/08 , B01D53/94 , F01N3/20 , F01N3/26 , F01N3/28 , F23J15/02
摘要： (A) Catalytic NOx redn. is oxygen-contg. exhaust gas from a continuous combustion appts., e.g. a Stirling engine, involves (a) supplying hydrogen gas into the exhaust gas entering the catalytic unit; and (b) catalytically reducing the exhaust gas at less than 250 deg. C to reduce it NOx content. (B) Equipment for carrying out the process is also claimed. USE/ADVANTAGE - The process is used for NOx redn. in exhaust gas from continuous external combustion engines (e.g. Stirling engines), boilers and the like. NOx contents are reduced without reducing the efficiency of the combustion appts. and independently of the oxygen concn. in the exhaust gas.

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