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1. 发明专利

JPH11182229A MUFFLER FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11182229A
公开(公告)日：1999-07-06
申请号：JP35066997
申请日：1997-12-19
申请人： KIORITZ CORP
发明人： SAKAGUCHI MASAO , SATO SHIGERU
IPC分类号： F01N1/14 , F01N3/34
摘要： PROBLEM TO BE SOLVED: To provide a muffler for an internal combustion engine reducing CO components in exhaust gas by providing outside air intake means for taking outside air into an expansion chamber using exhaust gas jet and effectively reducing emission of unpurified exhaust gas to the outside caused by pulsation of exhaust gas. SOLUTION: A muffler for an internal combustion engine is provided with expansion chambers 31, 32 into which exhaust gas exhausted from an exhaust port 10 of the internal combustion engine 1 is led. Outside air intake means 25, 26 for taking outside air into the expansion chamber 31 using led-in exhaust jet are provided near an exhaust gas lead-in part in the expansion chamber 31, and a check valve 80 allowing intake of outside air but impeding emission of unpurified exhaust gas to the outside is provided between the outside air intake means 25, 26 and the outside.

2. 发明专利

JPH09280053A TWO CYCLE ENGINE 失效
公开(公告)号：JPH09280053A
公开(公告)日：1997-10-28
申请号：JP9445296
申请日：1996-04-16
申请人： KIORITZ CORP
发明人： SAKAGUCHI MASAO , NAGAI NOBORU , SATO SHIGERU , SATO YASUHARU
IPC分类号： F02P13/00 , F02B23/08 , F02B25/14 , F02B63/02 , F02B75/02 , F02F1/00 , F02F1/22 , F02F3/00
摘要： PROBLEM TO BE SOLVED: To reduce THC component effectively without incurring the reduction of output characteristics and causing large structural change. SOLUTION: In a two cycle engine of schniile scavenging type which is provided with a combustion chamber 5 of squish dome type, the combustion chamber 5 is formed by a semi-spherical main face 5a and a ringlike squish band 5b which is continuous in its lower part, an ignition point SP of an ignition plug 15 is positioned in a central part of the combustion chamber 5, and band width α of the squish band 5b is reduced as much as possible.

3. 发明专利

JPH09273416A MUFFLER FOR TWO-CYCLE ENGINE 失效
公开(公告)号：JPH09273416A
公开(公告)日：1997-10-21
申请号：JP8426096
申请日：1996-04-05
申请人： KIORITZ CORP
发明人： SAKAGUCHI MASAO , NAGAI NOBORU , SATO SHIGERU , SATO YASUHARU
IPC分类号： F01N1/02 , F01N3/20 , F01N3/28 , F01N13/08 , F01N13/18 , F01N7/08 , F01N7/18
摘要： PROBLEM TO BE SOLVED: To improve exhaust gas purifying performance, to improve an installing property to an engine, an assembling property, and a degree of designing freedom in a muffler, and to minimize or eliminate problems due to temperature increase because of a reaction between exhaust gas and an oxidation catalyst. SOLUTION: In a muffler 20 for a two-cycle engine provided with an expansion chamber to which exhaust gas jetted from an exhaust port 10 in an engine 10 is introduced, the expansion chamber is divided vertically into a first expansion chamber 31 and a second expansion chamber 32 by means of a partition plate 40, while an exhaust gas purifying member 50 is arranged in the partition plate 40, and the exhaust gas is led from the first expansion chamber 31 to the second expansion chamber 32 via the inside of the exhaust gas purifying member 50.

4. 发明专利

JPH0893493A POWER BLOWER 失效
公开(公告)号：JPH0893493A
公开(公告)日：1996-04-09
申请号：JP25146494
申请日：1994-09-20
申请人： KIORITZ CORP
发明人： AKAIKE JUNICHI , SAKAGUCHI MASAO , TSUTSUI KAZUHIRO , OKANDA MASAO , YAMAMOTO TAKAYUKI
IPC分类号： E01H1/08 , F02B1/04 , F02B63/00
摘要： PURPOSE: To provide a power blower which need not fit and assemble a blow pipe when in use, can be compactly stored in carriage or storage without troubles such as obstruction or scattering/loss, is lightweight, is small in the gyro action, and reduces the feeling of fatigue by the load on the wrist and body. CONSTITUTION: In a power blower where an engine and a blower driven by the engine are provided in a machine body 1, and a discharge port 5 to discharge the air blown by the blower is opened at an appropriate position of the machine body 1, an expendable supporting rod 9 is supported at the inner position on the discharge port side 5, and a film-shaped pipe 8 to cover the circumference of the supporting rod 9 is expendably provided between a tip part 9c of the supporting rod 9 and the discharge port 5, and the film-shaped pipe 8 is attached/detached to/from the tip part 9c of the supporting rod and the discharge port 5.

5. 发明专利

JPH11210450A MUFFLER OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11210450A
公开(公告)日：1999-08-03
申请号：JP1424698
申请日：1998-01-27
申请人： KIORITZ CORP
发明人： SAKAGUCHI MASAO , YAMAMOTO TAKAYUKI , SATO SHIGERU
IPC分类号： F01N1/08 , F01N3/06 , F01N3/24 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To provide a muffler of an internal combustion engine capable of increasing the durability of an exhaust emission control member by preventing exhaust emission from an exhaust port of an internal combustion engine from being discharged directly on the exhaust emission control member, making uniform an inlet side temperature distribution on the exhaust emission control member, and suppressing the surface temperature of a muffler as low as possible. SOLUTION: An internal combustion engine 1 comprises a generally longitudinal expansion chamber to which exhaust emission discharged from an exhaust port 10 of the internal combustion engine 1 is introduced. The expansion chamber is divided vertically into a first expansion chamber 31 and a second expansion chamber 32 through a partition member 40, an exhaust emission control member 50 comprising an oxidation catalyst is disposed on the partition member 40, and exhaust emission from the exhaust port 10 is introduced from the first expansion chamber 31 to the second expansion chamber 32 through the exhaust emission control member 40. The exhaust emission control member 40 is disposed in the direction vertical to the exhaust emission jet direction apart by arbitrary distance from the exhaust port 10.

6. 发明专利

JP2003088220A PORTABLE BUSH CUTTER 审中-公开
公开(公告)号：JP2003088220A
公开(公告)日：2003-03-25
申请号：JP2001285202
申请日：2001-09-19
申请人： KIORITZ CORP
发明人： NAGAO YOSHIAKI , RIYUU IKUTAMI , SAKAGUCHI MASAO , SAWADATE YUKIO
IPC分类号： A01D34/68 , A01D34/76
摘要： PROBLEM TO BE SOLVED: To provide a portable bush cutter preventing torsional vibration from being caused and having little vibration. SOLUTION: This portable bush cutter is obtained by installing a one-way crutch (18) in a transmission passage for transmitting the rotation of a crank shaft (14) of an engine (4) to a cutting blade (8) rotating by centering a rotary shaft (6).

7. 发明专利

JP2001193610A MIXTURE GENERATOR 失效
公开(公告)号：JP2001193610A
公开(公告)日：2001-07-17
申请号：JP2000003663
申请日：2000-01-12
申请人： KIORITZ CORP
发明人： ISHIKAWA TAKESHI , SAKAGUCHI MASAO , HIRONAKA YOSHIAKI , ENOMOTO KIYOSHIGE
IPC分类号： F02B75/02 , F02M7/12 , F02M17/04 , F02M37/00 , F02M37/16 , F02M51/06 , F02M51/08 , F02M59/10 , F02M59/14 , F02M59/42 , F02M69/00
摘要： PROBLEM TO BE SOLVED: To prevent fuel from being excessively injected even with the generator rotated at a high speed without complicating its structure, in a mixture generator equipped with a diaphragm type fuel pump and a fuel injection valve. SOLUTION: A fuel injection valve 30 to supply fuel in a fuel passage part 25 to a body part 12 equipped with a diaphragm type fuel pump 14 in a designated timing, and a manual fuel pump 40 to fill fuel in the fuel passage part when the diaphragm type fuel pump is not driven are provided. The fuel passage part is brought into communication with the inlet 42 of the manual fuel pump, a pressure adjusting valve 44 working as an intake valve when operating the manual fuel pump and working as a by-pass valve to by-pass fuel in the fuel passage part to the manual pump chamber 40A of the manual fuel pump when a fuel pressure in the fuel passage part is not less than a designated pressure are disposed at the inlet.

8. 发明专利

JPH11294158A MUFFLER OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11294158A
公开(公告)日：1999-10-26
申请号：JP9972198
申请日：1998-04-10
申请人： KIORITZ CORP
发明人： SAKAGUCHI MASAO , SATO SHIGERU
IPC分类号： F01N1/08 , F01N3/02 , F01N13/20 , F01P1/06 , F02B63/00 , F01N7/20
摘要： PROBLEM TO BE SOLVED: To provide a muffler of an internal combustion engine which can effectively lower temperature of exhaust gas discharged from a final discharge port or surface temperature of the muffler. SOLUTION: This muffler of an internal combustion engine has expansion chambers to which exhaust gas injected from an exhaust port of the internal combustion engine is introduced, and a discharge port 71 for discharging the exhaust gas inside the expansion chambers to the outside. A venturi pipe 65 in which an external air introduction port 66 is formed on a throat part 65a is attached to a portion in the vicinity of the discharge port 71, so as to form an external air introduction gap 85 in between the discharge port 71 for mixing the external air with the exhaust gas discharged from the discharge port 71, by the use of injection flow of the exhaust gas.

9. 发明专利

JPH10212939A MUFFLER FOR TWO-CYCLE INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH10212939A
公开(公告)日：1998-08-11
申请号：JP1872797
申请日：1997-01-31
申请人： KIORITZ CORP
发明人： SATO YASUHARU , SAKAGUCHI MASAO , KUBO KENGO
IPC分类号： F01N1/08 , F01N1/14 , F01N3/28 , F01N3/30 , F01N3/32 , F01N3/34 , F01N7/00 , F01N13/00 , F01N13/14 , F02B63/02 , F02B75/02 , F04B43/06
摘要： PROBLEM TO BE SOLVED: To greatly reduce a CO component by forcibly supplying external air into a muffler expansion room by a diaphragm pump and increasing the amount of oxygen in a first expansion room. SOLUTION: A diaphragm pump 70 performs pumping action based on the pressure fluctuation of the crank room 6 of an internal combustion engine 1, sucks external air from an air introducing pipe 82 and discharges the air to an air discharge pipe 83. The air introduced to the air discharge pipe 83 is guided to the air flow-in pipe 53 of a muffler 20 via a connecting tube 84, and the air is jetted out from the air flow-in pipe 53 into the first expansion room 31 of the muffler 20. Exhaust gas introduced to the first expansion room 31 is mixed with the air jetted out from the air flow-in pipe 53, then, by a pressure difference between the first expansion room 31 and an adjacently disposed second expansion room 32 which are partitioned by a partition plate 40, it enters the inside of the exposed side face of an oxidation catalyst 50 and then guided through a small hole formed in the inside thereof to the second expansion room 32.

10. 发明专利

JPH108942A MUFFLER FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH108942A
公开(公告)日：1998-01-13
申请号：JP16168696
申请日：1996-06-21
申请人： KIORITZ CORP
发明人： SAKAGUCHI MASAO , SATO SHIGERU , KUBO KENGO
IPC分类号： F01N3/02 , F01N1/08 , F01N1/14 , F01N3/06 , F01N3/24 , F01N3/28 , F01N3/34 , F02B75/02
摘要： PROBLEM TO BE SOLVED: To surely prevent the blowoff of a spark, by forming a blowoff port, for leading an exhaust gas in an expansion chamber to a gap space, on an inner wall panel out of a double wall part forming the outer peripheral part of the expansion chamber; and also an exhaust opening, for discharging the exhaust gas outside from the gap space, on an outer wall panel. SOLUTION: An exhaust gas blown off from an exhaust port 10 is, at least, blown through inside/outside a venturi tube 25, and is introduced into a first expansion chamber 31 at a speed near to a sound speed, to be expandedly diffused to attenuate an exhaust sound, after that, is led into a second expansion chamber 32 via the inside of a catalytic oxidation 50 partitioned by a partitioning plate 40. Outside air is sucked from an outside air introducing pipe 26 by negative pressure, generated when the exhaust gas blows through the venturi tube 25, and is supplied, together with the exhaust gas, into the expansion chamber 31, to promote the oxidizing action of CO. The exhaust gas is blowen off to the second gap space Sb of a double wall part 32A from respective blowoff ports 61, 62, and 64, to be cooled during flowing the gap space Sb to extinguish a spark, and then is led into an exhaust port 37A.

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