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1. 发明专利

JP2000045880A INTAKE MANIFOLD 失效
公开(公告)号：JP2000045880A
公开(公告)日：2000-02-15
申请号：JP20991998
申请日：1998-07-24
申请人： DAIHATSU MOTOR CO LTD , TOYOTA MOTOR CORP
发明人： KIMURA MASATOSHI , NISHIKAWA KEITA , TACHIKAWA TAKASHI
IPC分类号： F02M35/10 , F02M25/07
摘要： PROBLEM TO BE SOLVED: To provide an intake manifold in an engine incorporating an EGR gas passage for introducing EGR gas into intake air, which can uniformly supply EGR gas among engine cylinders while the EGR gas is sufficiently mixed with the intake air so as to enhance the exhaust performance. SOLUTION: In an intake manifold 1 having an EGR gas introduction port 9 for introducing EGR gas into intake air, a mixing chamber 4 formed therein with an intake air inlet port 7 and the EGR gas introduction port 9 is communicated thereto with a collector part 2 formed therein a plurality of ports 3 connected to engine cylinders, through a communication port 6, and a throttle valve attaching part 11 and the EGR gas introduction port 9 are arranged so that the center axis P of a throttle valve 12 and the center axis O of the EGR gas introduction port 9 are substantially in parallel with each other.

2. 发明专利

JP2000230456A CYLINDER HEAD OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000230456A
公开(公告)日：2000-08-22
申请号：JP3134499
申请日：1999-02-09
申请人： TOYOTA MOTOR CORP , DAIHATSU MOTOR CO LTD
发明人： YASUKAWA MASAO , TACHIKAWA TAKASHI , NAGATA MASAHISA , KAWAZU TAKANORI , SUZUKI TOMOAKI , FUJII AKIRA , INOUE HIROTOSHI , OMOTO SATORU
IPC分类号： F02F1/00 , F02B3/06 , F02F1/24 , F02F1/38 , F02F1/42 , F02M61/14
摘要： PROBLEM TO BE SOLVED: To ensure sufficient rigidity against combustion pressure while avoiding increase in weight. SOLUTION: This cylinder head 10 includes ribs 32 reinforcing the coupling between boss portions 22, 23 for bolts into which head bolt fastening the cylinder head 10 to a cylinder block is inserted. Also, the cylinder head 10 includes ribs 30, 31 reinforcing the coupling of the boss portion 22 for bolts with a boss portion 20 to house an injector which is disposed in the upper middle of a combustion chamber 14 through boss portions 21 for a valve guide of an engine valve. The rigidity of the cylinder head 10 against combustion pressure is effectively improved by transmitting fastening force of the head bolts to the boss portions 20, 21 provided in the upper side of the combustion chamber 14 through the ribs 30 to 32.

3. 发明专利

JPH10259763A COOLING DEVICE FOR EGR 失效
公开(公告)号：JPH10259763A
公开(公告)日：1998-09-29
申请号：JP6686097
申请日：1997-03-19
申请人： TOYOTA MOTOR CORP , DAIHATSU MOTOR CO LTD
发明人： TACHIKAWA TAKASHI , UENO YASUSHI
IPC分类号： F02M25/07 , F01P3/12
摘要： PROBLEM TO BE SOLVED: To improve cooling efficiency for exhaust gas by a method wherein the length of a flow passage for cooling water is increased, in a cooling device for EGR to perform cooling of exhaust gas returned from an exhaust system to an intake system. SOLUTION: This device is arranged in an EGR piping 16 which takes out a part of exhaust gas from the exhaust passage 14 of an engine 11 and recirculates it to an intake passage 13, and the exhaust gas flowing through the EGR piping 16 is cooled by cooling water. In this case, an outer cylinder 21 is disposed in a manner to cover an inner cylinder 20 connected to the EGR piping 16 and cooling water is caused to flow through a space between the inner and outer cylinders 20 and 21. Further, a throttle part 22 to substantially increase the length of a flow passage for cooling water is arranged between the inner and outer cylinders 20 and 21.

4. 发明专利

JPH06313493A PIPE CLAMP 失效
公开(公告)号：JPH06313493A
公开(公告)日：1994-11-08
申请号：JP10553493
申请日：1993-05-06
申请人： TOYOTA MOTOR CORP
发明人： TACHIKAWA TAKASHI , SAIKI TAKAHARU , JINNO KOICHI
IPC分类号： F16L3/08 , F16L3/12
摘要： PURPOSE:To facilitate clamping operation by composing a pipe clamp of a one-piece part. CONSTITUTION:A pipe clamp 10 has a clamp main body 11 whose one surface is a seat surface 17. The clamp main body 11 is formed with a center hole 19 and pipe holding grooves 20 on both sides thereof. An outer portion 17a of the seat surface 17 is projected in an axial direction of the center hole. When a nut 14 is fastened and the outer portion 17a of the seat surface is deformed, an outer wall portion 22 falls so as to hold a pipe 15. The clamp main body 11 for holding the pipe 15 is a one-piece part. The pipe 15 can be fixed only by fastening the nut 14, so that the clamping operation is facilitated.

5. 发明专利

JPH04342863A PURGE SYSTEM FOR EVAPORATED FUEL IN MULTI-CYLINDER INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH04342863A
公开(公告)日：1992-11-30
申请号：JP11602591
申请日：1991-05-21
申请人： TOYOTA MOTOR CORP
发明人： TACHIKAWA TAKASHI , NAKAJIMA MIKIO , ENDO KOJI , MIZUTANI KOICHI , YAMAMOTO YOSHIAKI
IPC分类号： F02M25/08
摘要： PURPOSE:To prevent dispersion of air fuel ratio by sucking purge air of a charcoal canister for adsorbing evaporated fuel equally in a an intake passage of each cylinder of a multi-cylinder internal combustion engine. CONSTITUTION:In order to separate evaporated fuel adsorbed to a canister 52 by passing purge air, an upstream side purge passage 34 (or 38) is multipoint- connected to plural downstream side purge passages 38 (or 42) having the substantially same length at a branch point 36(or 40) for equally branching, so that the lengths of purge passages to a purge port 56 in the intake passages of the above cylinders from the canister 52 have the substantially same length.

6. 发明专利

JPH08284709A DIESEL ENGINE 失效
公开(公告)号：JPH08284709A
公开(公告)日：1996-10-29
申请号：JP8965595
申请日：1995-04-14
申请人： TOYOTA MOTOR CORP
发明人： HOTSUTA YOSHIO , TACHIKAWA TAKASHI , JINNO KOICHI , SAIKI TAKAHARU
IPC分类号： F02M25/07 , F02B3/06 , F02D9/02 , F02D21/08 , F02D23/00 , F02D41/02 , F02D41/04
摘要： PURPOSE: To make reduction of noise and securing of exhaust gas recirculation quantity compatible without applying an exclusive throttle valve for exhaust gas recirculation or applying complicated controls. CONSTITUTION: A suction passage 27 and an exhaust passage 28 are connected to a main combustion chamber 18 of a Diesel engine 11. Both passages 27, 28 are communicated with each other by an exhaust gas recirculation passage 32 and some of the exhaust gas inside the exhaust gas passage 28 is refluxed to the suction passage 27. A part of the suction passage 27 on the upper stream of an exhaust gas injection port 31 of the recirculation passage 32 is partitioned to a main channel 43 and an auxiliary channel 44 by a partition wall 42. A main suction throttle valve 45, which is rotatably supported by the main channel 43, closes the main channel 43 when an accelerator pedal 41 is not stepped on and, when it is stepped on, it opens the main channel 43 by the part on the lower stream than the shaft turning in an aparting direction from a lower stream end 42a of the partition wall 42. An auxiliary suction throttle valve 48, which opens and closes in accordance with the operating condition of the Diesel engine 11, is provided on the auxiliary channel 44.

7. 发明专利

JPH08100661A DISCHARGE STRUCTURE FOR OIL GATHERED IN INTAKE PASSAGE 失效
公开(公告)号：JPH08100661A
公开(公告)日：1996-04-16
申请号：JP23929094
申请日：1994-10-03
申请人： TOYOTA MOTOR CORP
发明人： TACHIKAWA TAKASHI , SAIKI TAKAHARU , JINNO KOICHI
IPC分类号： F02B29/04 , F02M35/10
摘要： PURPOSE: To obtain a discharge structure for oil gathered in an intake passage which can discharge the oil accumulated inside an intercooler without fail and prevents occurrence of abnormal combustion. CONSTITUTION: An intercooler 4 is arranged on a downstream side of a supercharger on the way of an intake passage 3. A blowby gas pipe 6 is arranged on an upstream side of the intercooler 4. An intake throttle valve 7 is arranged on the downstream side of the intercooler 4, which is fully closed when an engine is stopped. A discharge outlet 8 and a discharge port 9 are formed on the nearest portion of the intercooler 4. A communication port 11 is formed in the vicinity of an intake throttle valve 7 of the intake passage 3. A hose 12 having a changeover valve 13 is installed so as to connect the discharge port 9 to the communication port 11. The oil is flowed from the blowby gas pipe 6 into the intercooler 4 by a small amount. During operation of the engine, negative pressure is generated on an immediately downstream side of the intake throttle valve 7, so that the oil is suctioned by the negative pressure and gradually discharged into the intake passage 3 through the hose 12.

8. 发明专利

JPH04337163A MANIFOLD GASKET FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH04337163A
公开(公告)日：1992-11-25
申请号：JP13321191
申请日：1991-05-10
申请人： TOYOTA MOTOR CORP , UCHIYAMA MFG
发明人： NAKAGAWA TAKAYOSHI , NAKAJIMA MIKIO , TACHIKAWA TAKASHI , YANO KOJI
IPC分类号： F02F11/00 , F02M35/10 , F02M35/104 , F16J15/08
摘要： PURPOSE:To improve the assembling performance of a seal member and to prevent the occurrence of deficiency in sealing owing to a step difference between ports. CONSTITUTION:A gasket 20 is for a manifold of an internal combustion engine located between an intake manifold 10 and a surge tank 18. A plurality of seal members 22 located at respective ports 14 of the intake manifold 10 and a main palte 24 which is extended in the direction crossing a port axis at a right angle to intercouple the plural seal members and the thickness of which is decreased so that it is displaceable in the direction of the axis of the port are provided. Through intercoupling of the seal members 22 by means of the main plate 24, a plurality of the seal members 22 can be mounted through one action of gasket mounting, resulting in improvement of workability. Further, since the main plate 24 is displaceable in the direction of the axis of the port, a step difference in a seal position can be absorbed.

9. 发明专利

JPH06317217A PISTON COMBUSTION CHAMBER OF DIESEL ENGINE 失效
公开(公告)号：JPH06317217A
公开(公告)日：1994-11-15
申请号：JP10571393
申请日：1993-05-06
申请人： TOYOTA MOTOR CORP
发明人： JINNO KOICHI , KIZAKI KANJI , TACHIKAWA TAKASHI , SAIKI TAKAHARU
IPC分类号： F02B19/08 , F02B3/06 , F02F3/26
摘要： PURPOSE:To improve air utilization factor in a trench sideway part of a dicotyledons-type main combustion chamber. CONSTITUTION:Respective leaf parts 18a, 18b of a cotyledons part 18 of a dicotyledons-type main combustion chamber 5 formed on the top of a piston are formed in the direction of the shaft of a trench 17 so as to be formed into an ellipse shape. Thereby flames can be guided to a trench sideway part 21 without weakening the intensity of reverse-rotational force of the flames and swirling flow in the leaf parts 18a, 18b, and the air utilization factor on the trench sideway part 21 can be improved. As the result, fuel consumption and output performance are also improved.

10. 发明专利

JPH04353264A BYPASS PASSAGE STRUCTURE FOR MULTI-CYLINDER INDEPENDENT THROTTLE INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH04353264A
公开(公告)日：1992-12-08
申请号：JP12598991
申请日：1991-05-29
申请人： TOYOTA MOTOR CORP
发明人： NAKAJIMA MIKIO , TACHIKAWA TAKASHI
IPC分类号： F02M69/32 , F02M29/00 , F02M35/10 , F02M35/104
摘要： PURPOSE:To provide a bypass passage structure that is excellent in mountability and can distribute bypass air uniformly to each cylinder, with regard to a multi- cylinder internal combustion engine bypass passage structure used for an ISC(idle speed control) device or the like. CONSTITUTION:A metal gasket 9 having a connection hole 12 at its center is provided between the 1st chamber 10 to lead bypass air and the 2nd chamber 11 communicating with each air intake port P, and an almost perpendicular wall 2a is provided in the vicinity of the communication hole 12 of the 1st chamber 10 and a passage sectional area in the bypass air flow direction down stream from the wall 2a is made smaller than a passage sectional area of the upstream, and air pulsation inside the passage is utilized.

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