US20090126355A1 - Exhaust Manifold - Google Patents

Exhaust Manifold Download PDF

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Publication number
US20090126355A1
US20090126355A1 US12/087,272 US8727207A US2009126355A1 US 20090126355 A1 US20090126355 A1 US 20090126355A1 US 8727207 A US8727207 A US 8727207A US 2009126355 A1 US2009126355 A1 US 2009126355A1
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United States
Prior art keywords
collecting part
exhaust
pipe collecting
exhaust manifold
side end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/087,272
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English (en)
Inventor
Kazuya Uchida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Assigned to CALSONIC KANSEI CORPORATION reassignment CALSONIC KANSEI CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: UCHIDA, KAZUYA
Publication of US20090126355A1 publication Critical patent/US20090126355A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • the present invention relates to an exhaust manifold which is connected to an engine, especially an exhaust manifold provided with a sensor on a pipe collecting part thereof to detect a state of an exhaust gas passing therethrough.
  • the conventional exhaust manifolds have a plurality of branch pipes 02 with upstream side portions being bent downward from a head flange 01 to form like an L-letter shape. Their upstream side end portions are connected with an engine E through the head flange 01 .
  • the downstream side end portions of the former are connected with a catalytic converter via a pipe collecting part 06 , while those of the latter are aggregated and directly connected with a catalytic converter.
  • the former is superior to the latter, in weigh saving and high-accurate detection of a state of an exhaust gas.
  • the pipe collecting part 06 has a reduced diameter portion 06 d at its intermediate position, where the reduced diameter portion 06 d has a circular cross section whose diameter is reduced compared to those of upstream and downstream side end portions thereof.
  • the reduced diameter portion 06 d is provided with a sensor 010 for detecting oxygen concentration in the exhaust gas so that a sensing part 010 c of the sensor 010 is positioned in the center of a flow of the exhaust gas passing through the reduced diameter portion 06 d to obtain high accurate sensing.
  • the former conventional exhaust manifold has the following problem.
  • branch pipes 02 are bent downward from the head flange 01 to form like an L-letter shape, exhaust-gas upstream side end portions of the branch pipes 02 are fixed to the engine E through the head flange 01 , and exhaust-gas downstream side end portions thereof are fixed to a vehicle body through a catalytic converter 07 and others.
  • a stress is produced due to the vibrations of the engine E (A direction of the vibration is indicated by an arrow ER around a vertical axis, vertical to a paper surface of this specification, passing through a point OA in FIG. 8 .) and also due to thermal expansion and contraction of the respective branch pipes 02 (A direction of thermal expansion and contraction are indicated by an arrow BD in FIG.
  • the pipe collecting part 06 and/or its periphery may very likely buckle up at the reduced diameter portion 06 d , which is indicated by an alternate long and short dash lined ellipse AB and is weak in strength.
  • the pipe collecting part 06 is required to increase in thickness to enforce the strength of the reduced diameter portion 06 d of the pipe collecting part 6 . This causes the problem in that a temperature rise in an exhaust gas purifying catalyst is delayed due to the increase in weight and thermal capacity of the pipe collecting part 06 .
  • the present invention is made to solve the above-described problem, and an object thereof is to provide an exhaust manifold which can enforce strength of a pipe collecting part without increasing its weight and detect a state of an exhaust gas with high accuracy by a sensor, thereby accelerating a temperature rise of an exhaust gas purifying catalyst to improve an exhaust gas purifying performance.
  • an exhaust manifold including a head flange, a plurality of branch pipes, and a pipe collecting part.
  • the head flange is fixed to an engine.
  • the plurality of branch pipes is bent downward from the head flange to form like an L-letter shape, where the branch pipes have exhaust-gas upstream side end portions and exhaust-gas downstream side end portions.
  • the exhaust-gas upstream side end portions are connected with the engine through the head flange, and the exhaust-gas downstream side end portions of the branch pipes are connected with the pipe collecting part.
  • the pipe collecting part is provided with a sensor for detecting a state of an exhaust gas.
  • the pipe collecting part has a reduced diameter portion in which a length, of the pipe collecting part, in a longitudinal direction of the head flange is set to be shorter than a length, of the pipe collecting part, in a thickness direction of the head flange.
  • the reduced diameter portion is provided with the sensor.
  • the pipe collecting part has an intermediate portion in which the both surfaces seen from the thickness direction are formed to have an involute curve.
  • the pipe collecting part is formed to have curves at both sides, respectively, so that width lengths of the surfaces seen from the thickness direction become larger from an exhaust-gas upstream side end portion of the pipe collecting part to an exhaust-gas downstream side end portion thereof.
  • the pipe collecting part has two divided bodies, which are separatable in the longitudinal direction along the thickness direction, coupled with each other.
  • the senor has a holding portion which is fixed on one of the surfaces seen from the longitudinal direction through a boss member provided thereon.
  • the plurality of branch pipes is bent downward from the head flange to form the L-letter shape.
  • the exhaust-gas upstream side end portions are connected with the engine through the head flange, and the exhaust-gas downstream side end portions of the branch.
  • pipes are connected with the pipe collecting part.
  • the pipe collecting part is provided with the sensor for detecting the state of the exhaust gas.
  • the pipe collecting part has a reduced diameter portion in which the length of the pipe collecting part in the longitudinal direction of the head flange is shorter than the length of the pipe collecting part in the thickness direction of the head flange, and the reduced diameter being provided with the sensor.
  • the exhaust manifold of the invention can increase its strength without increasing the weight of the pipe collecting part. This can improve its exhaust gas purifying performance by promoting the rise in temperature of an exhaust gas purifying catalyst. In addition, it can detect the state of the exhaust gas with high accuracy.
  • the pipe collecting part has the intermediate portion in which the both surfaces seen from the thickness direction are formed to have the involute curve. Therefore, it facilitates dispersion of the stress acting on the surfaces, thereby increasing the strength of the reduced diameter portion.
  • the pipe collecting part is formed to have the curves at both sides, respectively, so that width lengths of the surfaces seen from the thickness direction become larger from the exhaust-gas upstream side end portion of the pipe collecting part to the exhaust-gas downstream side end portion thereof. Therefore, this can ensure the pipe collecting part 6 to bear the stress acting on the surfaces.
  • the pipe collecting part has the two divided bodies, which are separatable in the longitudinal direction along the thickness direction, coupled with each other. Therefore, the pipe collecting part 6 can be manufactured easily and low costs.
  • the senor has the holding portion which is fixed on the one of the surfaces seen from the longitudinal direction through the boss member provided thereon. Therefore, strength of the surface provided with the holding portion and the boss member can be increased, a projecting amount of the oxygen sensor from the pipe collecting part being reduced, and the oxygen sensor being avoided from possible interference with other portions/parts.
  • FIG. 1 is a front view showing an exhaust manifold of an embodiment according to the present invention
  • FIG. 2 is a right side view showing the exhaust manifold of the embodiment
  • FIG. 3 is a front view showing a pipe collecting part of the exhaust manifold of the embodiment
  • FIG. 4 is a rear view showing the pipe collecting part of the exhaust manifold of the embodiment
  • FIG. 5 is a right side view showing the pipe collecting part of the exhaust manifold of the embodiment.
  • FIG. 6 is a left side view showing the pipe collecting part of the exhaust manifold of the embodiment.
  • FIG. 7 is a plan view showing the pipe collecting part of the exhaust manifold of the embodiment.
  • FIG. 8 is a right side view showing a conventional exhaust manifold and is used for explaining its problem.
  • FIG. 1 is a front view showing an exhaust manifold of the embodiment according to the present invention
  • FIG. 2 is a right side view showing the exhaust manifold
  • FIG. 3 is a front view showing a pipe collecting part of the exhaust manifold
  • FIG. 4 is a rear view showing the same
  • FIG. 5 is a right side view showing the same
  • FIG. 6 is a left side view showing the same
  • FIG. 7 is a plan view showing the same.
  • the exhaust manifold EM includes a head flange 1 , four branch pipes 2 to 5 and a pipe collecting part 6 , and it is equipped with a catalytic converter 7 and an oxygen sensor 10 .
  • the head flange 1 is formed like a plate and is fixed on one of side surfaces of a not-shown cylinder head of a not-shown engine.
  • the branch pipes 2 to 5 are projected in a lateral direction of the engine from the head flange 1 so that they are bent downward therefrom to form like an L-letter shape.
  • exhaust-gas upstream side end portions of the branch pipes 2 to 5 are connected to respective insertion holes 1 a formed on the head flange 1 , where the insertion holes 1 a are communicated to cylinders of the engine, respectively.
  • Exhaust-gas downstream side end portions thereof are formed to each have a quadrant cross section to be assembled together so as to form a circular pipe, thereby being connected to an exhaust-gas upstream side end portion 6 c of the pipe collecting part 6 .
  • An exhaust-gas downstream side end portion 6 f of the pipe collecting part 6 is connected with an exhaust-gas side upstream side end portion of the catalytic converter 7 which contains a catalyst carrier 8 .
  • An exhaust-gas downstream side end portion of the catalytic converter 7 is provided with a flange portion 9 for fixing a not-shown downstream side exhaust pipe.
  • the pipe collecting part 6 is made of a pair of divided bodies 6 a and 6 b , formed by using a not-shown press forming machine, which are coupled and welded with each other at their edge portions X 1 and X 2 to form like a tube.
  • the exhaust-gas upstream side end portion 6 c of the pipe collecting part 6 has an opening for receiving the exhaust-gas downstream portions of the branch pipes 2 to 5 .
  • An intermediate portion of the pipe collecting part 6 is formed as a reduced diameter portion 6 d .
  • lengths of surfaces orthogonal to surfaces on which the branch pipes 2 to 5 are bent like the L-letter shape is shorten compared to lengths of the latter surfaces.
  • the reduced diameter portion 6 d is formed so that the length of the pipe collecting part 6 in the longitudinal direction, indicated by an arrow LN in FIG. 1 , of the head flange 1 is set to be shorter than the length of the pipe collecting part 6 in a thickness direction, indicated by an arrow LT in FIG. 2 , where the longitudinal direction LN also corresponds to a longitudinal direction of the engine and the thickness direction LT also corresponds to a lateral direction of the engine.
  • an opening portion 6 e is formed, for receiving the oxygen sensor 10 , on one of the surfaces of the reduced diameter portion 6 d , namely on the surface seen from the longitudinal direction LN of the head flange 1 as shown in FIG. 1 and FIG. 2 .
  • the oxygen sensor 10 is fixed along the longitudinal direction LN, and it serves as a sensor of the present invention.
  • An opening of the exhaust-gas downstream side end portion 6 f of the pipe collecting part 6 is expanded in diameter so as to receive an exhaust-gas upstream side end portion of the catalytic converter 7 .
  • the pipe collecting part 6 is formed to have an outer shape described below.
  • the outer shape is formed in such a way that the outer profiles, seen from in the thickness direction LT, of the surfaces, seen from the longitudinal direction LN, are formed like an involute curve, from the exhaust-gas upstream side end portion 6 c to the exhaust-gas downstream side end portion 6 f , thereby providing the intermediate portion thereof to be reduced in diameter.
  • the outer profiles of the surfaces, seen from the thickness direction LT are formed like a gradually expanding curve from the exhaust-gas upstream side end portion to the exhaust-gas downstream side end portion.
  • the oxygen sensor 10 is used for detecting an oxygen concentration in the exhaust gas passing through the pipe collecting part 6 to carry out feedback control of an air-fuel ratio of an air-fuel mixture to be supplied to the engine.
  • One end portion of the sensor 10 is provided with a wiring 10 a electrically connected to a not-shown control unit, the intermediate portion thereof is formed with a holding portion 10 b contacted with a cylindrical boss member 11 provided on the opening portion 6 e of the pipe collecting part 6 , and the other end portion thereof is provided with a sensing part 10 c arranged at a center position of a flow of the exhaust gas when it is inserted into the opening portion 6 e of the pipe collecting part 6 .
  • At least the head flange 1 , the branch pipes 2 to 5 , the pipe collecting part 6 and the catalytic converter 7 are made of metal like stainless.
  • exhaust manifold EM is connected with the cylinder head of the engine through the head flange 1 , and the flange portion 9 of the catalytic converter 8 is connected with the downstream side exhaust pipe attached to the vehicle body when they are mounted on the vehicle body.
  • each branch pipe 02 of the exhaust manifold EM is formed to bend from the head flange 01 like the L-letter shape, the exhaust-gas upstream side end portion thereof being fixed to the engine through the head flange 01 , and the exhaust-gas downstream side end portion thereof being fixed to the vehicle body through the catalytic converter 07 and others. Therefore, a stress is produced due to the thermal expansion and contraction of each branch pipe and also due to the vibrations of the engine, thereby acting on the whole exhaust manifold to be folded like the L-letter shape.
  • the pipe collecting part 06 requires to be enforced in strength thereof by increasing the thickness of the pipe collecting part 06 . This increase in the thickness causes the problems in that the temperature rise in the exhaust gas purifying catalyst is delayed due to the increase in its mass and thermal capacity.
  • the reduced diameter part 6 c of the pipe collecting part 6 is not formed in such a way that the lengths of the surfaces, parallel to the surface extending along which the branch pipes 2 to 5 are bent, are reduced in diameter. This can ensure the pipe collecting part 6 to have the strength enough to bear the stress due to the thermal expansion and contraction of the branch pipes 2 to 5 and due to the vibration of the engine, without increasing the thickness of the pipe collecting part 6 .
  • the reduced diameter portion 6 d is formed so that the lengths of the surfaces, orthogonal to the surfaces along which the branch pipes 2 to 5 are bent, are set to be shorter than the length of the latter surface, and the oxygen sensor 10 is provided on the reduced diameter portion 6 d .
  • This enables the oxygen sensor 10 to detect the state of the exhaust gas with high accuracy, because the sensing part 10 c of the oxygen sensor 10 can be positioned in the center of a flow of the exhaust gas passing the reduced cross section of the pipe collecting part 6 .
  • the plurality of branch pipes 2 to 5 is formed to bend from the head flange 1 like the L-letter shape, the exhaust-gas upstream side end portions of the branch pipes 2 to 5 are connected with the engine through the head flange 1 , and the exhaust-gas downstream side end portions thereof are connected with the pipe collecting part 6 , which is provided with the oxygen sensor 10 for detecting the state of the exhaust gas.
  • the reduced diameter portion 6 d of the pipe collecting part 6 is formed so that lengths of the surfaces, orthogonal to the surfaces along which the branch pipes 2 to 5 are bent like the L-letter shape, are set to be shorter than those of the latter surfaces.
  • the reduced diameter portion 6 d is provided with the oxygen sensor 10 .
  • the exhaust manifold EM of the embodiment can increase its strength without increasing the weight of the pipe collecting part 6 .
  • This can improve its exhaust gas purifying performance by accelerating the temperature rise in the catalyst carrier (an exhaust gas purifying catalyst) 8 in the catalytic converter 7 .
  • the oxygen sensor 10 can detect the state of the exhaust gas with high accuracy because it is located in the center of the flow of the exhaust gas passing through the reduced diameter portion 6 d.
  • the both surfaces, seen from the longitudinal direction LN, of the reduced diameter portion 6 are formed like the involute curve.
  • the involute curved surfaces facilitate dispersion of the stress acting on the surfaces, thereby increasing the strength of the reduced diameter portion 6 d.
  • the both surfaces, seen from the thickness direction LT, of the pipe collecting part 6 is formed to have the curve at their side edge portions so that longitudinal directional (width) lengths of the surfaces are set to be larger from the exhaust-gas upstream side end portion to the exhaust-gas downstream side end portion. This profile can ensure the pipe collecting part 6 to bear the stress acting on the surfaces.
  • the pipe collecting part 6 consists of the two divided bodies 6 a and 6 b , which are firstly separated in the longitudinal direction LN along the thickness direction LT and then are coupled with each other. Therefore, the pipe collecting part 6 can be manufactured easily and at low costs.
  • the oxygen sensor 10 is provided so that the holding portion 10 b is placed on one of the surfaces seen from the longitudinal direction LN, via the cylindrical boss member 11 . Therefore, the cylindrical boss portion 11 and the holding portion 10 b can increase the strength of the surface provided therewith. In addition, they can reduce a projecting amount of the oxygen sensor 10 from the pipe collecting part 6 , and can avoid the oxygen sensor 6 from possible interferences with other portions/parts.
  • the oxygen sensor 10 is provided on the one surface, seen from the longitudinal direction LN, of the reduced diameter portion 6 d of the pipe collecting part 6 in the embodiment, while it may be provided on the other surface of the reduced diameter portion 6 d.
  • the sensor of the present invention is not limited to the oxygen sensor, and it may employ a sensor for detecting a state of the exhaust gas, for example, a temperature sensor for detecting a temperature of the exhaust gas.
  • the pipe collecting part 6 is manufactured by the two divided bodies 6 a and 6 b being coupled with each other, while it may be made of one pipe by using press working, spinning or the like.
  • the exhaust manifold EM of the present invention is applicable to exhaust manifolds of various engines, including transversely mounted engines and longitudinally mounted engines, as long as the engines use an exhaust manifold for discharging exhaust gas therethrough.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Silencers (AREA)
US12/087,272 2006-01-26 2007-01-16 Exhaust Manifold Abandoned US20090126355A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2006017721A JP2007198256A (ja) 2006-01-26 2006-01-26 エキゾーストマニホールド
JP2006-017721 2006-01-26
PCT/JP2007/050487 WO2007086277A1 (ja) 2006-01-26 2007-01-16 エキゾーストマニホールド

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US20090126355A1 true US20090126355A1 (en) 2009-05-21

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ID=38309072

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US12/087,272 Abandoned US20090126355A1 (en) 2006-01-26 2007-01-16 Exhaust Manifold

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US (1) US20090126355A1 (ja)
EP (1) EP1980727A4 (ja)
JP (1) JP2007198256A (ja)
KR (1) KR20080113351A (ja)
CN (1) CN101375030A (ja)
WO (1) WO2007086277A1 (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100000201A1 (en) * 2008-07-03 2010-01-07 Toyota Jidosha Kabushiki Kaisha Exhaust manifold
US20140237991A1 (en) * 2011-11-14 2014-08-28 Mazda Motor Corporation Exhaust apparatus for multi-cylinder engine
US20150089932A1 (en) * 2012-03-22 2015-04-02 Isuzu Motors Limited Internal combustion engine
US10436105B2 (en) 2013-11-07 2019-10-08 Honda Motor Co., Ltd. Exhaust structure
US11661882B1 (en) * 2020-06-23 2023-05-30 Normand A. St. Pierre Modified exhaust system with oxygen sensor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3165731B1 (en) * 2014-07-04 2020-04-22 Yamaha Hatsudoki Kabushiki Kaisha Vehicle and single-cylinder four-stroke engine unit
CN104564287A (zh) * 2015-01-04 2015-04-29 江苏昊宸催化器科技有限公司 一种发动机尾气处理装置
JP2021021347A (ja) * 2019-07-25 2021-02-18 川崎重工業株式会社 エンジンの排気装置

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US4745742A (en) * 1986-08-20 1988-05-24 Toyota Jidosha Kabushiki Kaisha Dual path exhaust pipe for mounting an oxygen sensor
US5911609A (en) * 1996-04-15 1999-06-15 Sanshin Kogyo Kabushiki Kaisha Watercraft exhaust system
US6082103A (en) * 1997-08-06 2000-07-04 Toyota Jidosha Kabushiki Kaisha Exhaust manifold, for internal combustion engine, for improving durability of oxygen sensor at merging portion of exhaust manifold
US6324838B1 (en) * 1999-10-07 2001-12-04 Metaldyne Tubular Products, Inc. Flow deflector member for exhaust manifold
US6962048B2 (en) * 2002-07-30 2005-11-08 Nissan Motor Co., Ltd. Engine exhaust apparatus
US7171804B2 (en) * 2003-08-20 2007-02-06 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system for multi-cylinder engine, and straddle-type vehicle provided with same
US7418818B2 (en) * 2005-05-25 2008-09-02 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system, and engine device and vehicle with the same
US7610748B2 (en) * 2004-09-30 2009-11-03 Honda Motor Co., Ltd. Mounting structure for an air-fuel ratio sensor in a motorcycle, and exhaust subassembly including same

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JP3046435B2 (ja) * 1991-09-11 2000-05-29 ヤマハ発動機株式会社 自動二輪車の酸素センサー保護装置
JPH0578919U (ja) * 1992-03-31 1993-10-26 愛知機械工業株式会社 排気マニホールド構造
JP4502491B2 (ja) * 2000-10-02 2010-07-14 株式会社榛葉鉄工所 チタン製排気管の集合部構造
JP3521895B2 (ja) * 2000-12-07 2004-04-26 日産自動車株式会社 内燃機関の排気マニホルド
JP4387067B2 (ja) * 2001-03-30 2009-12-16 カルソニックカンセイ株式会社 排気マニホールド用ブランチ管の製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745742A (en) * 1986-08-20 1988-05-24 Toyota Jidosha Kabushiki Kaisha Dual path exhaust pipe for mounting an oxygen sensor
US5911609A (en) * 1996-04-15 1999-06-15 Sanshin Kogyo Kabushiki Kaisha Watercraft exhaust system
US6082103A (en) * 1997-08-06 2000-07-04 Toyota Jidosha Kabushiki Kaisha Exhaust manifold, for internal combustion engine, for improving durability of oxygen sensor at merging portion of exhaust manifold
US6324838B1 (en) * 1999-10-07 2001-12-04 Metaldyne Tubular Products, Inc. Flow deflector member for exhaust manifold
US6962048B2 (en) * 2002-07-30 2005-11-08 Nissan Motor Co., Ltd. Engine exhaust apparatus
US7171804B2 (en) * 2003-08-20 2007-02-06 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system for multi-cylinder engine, and straddle-type vehicle provided with same
US7610748B2 (en) * 2004-09-30 2009-11-03 Honda Motor Co., Ltd. Mounting structure for an air-fuel ratio sensor in a motorcycle, and exhaust subassembly including same
US7418818B2 (en) * 2005-05-25 2008-09-02 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system, and engine device and vehicle with the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100000201A1 (en) * 2008-07-03 2010-01-07 Toyota Jidosha Kabushiki Kaisha Exhaust manifold
US8099954B2 (en) 2008-07-03 2012-01-24 Toyota Jidosha Kabushiki Kaisha Exhaust manifold
US20140237991A1 (en) * 2011-11-14 2014-08-28 Mazda Motor Corporation Exhaust apparatus for multi-cylinder engine
US9140173B2 (en) * 2011-11-14 2015-09-22 Mazda Motor Corporation Exhaust apparatus for multi-cylinder engine
US20150089932A1 (en) * 2012-03-22 2015-04-02 Isuzu Motors Limited Internal combustion engine
US9593612B2 (en) * 2012-03-22 2017-03-14 Isuzu Motors Limited Internal combustion engine
US10436105B2 (en) 2013-11-07 2019-10-08 Honda Motor Co., Ltd. Exhaust structure
US11661882B1 (en) * 2020-06-23 2023-05-30 Normand A. St. Pierre Modified exhaust system with oxygen sensor

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EP1980727A4 (en) 2010-09-01
CN101375030A (zh) 2009-02-25
WO2007086277A1 (ja) 2007-08-02
KR20080113351A (ko) 2008-12-30
JP2007198256A (ja) 2007-08-09
EP1980727A1 (en) 2008-10-15

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