JP3133279U - Motorcycle exhaust pipe catalyst device - Google Patents

Motorcycle exhaust pipe catalyst device Download PDF

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JP3133279U
JP3133279U JP2007002964U JP2007002964U JP3133279U JP 3133279 U JP3133279 U JP 3133279U JP 2007002964 U JP2007002964 U JP 2007002964U JP 2007002964 U JP2007002964 U JP 2007002964U JP 3133279 U JP3133279 U JP 3133279U
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catalyst
exhaust
pipe
engine
exhaust pipe
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張文信
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信通交通器材股▲ふん▼有限公司
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    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/14—Silencing apparatus characterised by method of silencing by adding air to exhaust gases
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • F01N13/0097—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 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—Catalytic converters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

【課題】前置排気管内の触媒は前置供給パイプから供給される二次エアを利用してエンジンの排気ガスの浄化を行い、特にエンジンを起動させた時において、エンジン排気ガスの温度を上昇させ、触媒コンバーターの温度を排気ガス浄化に必要な作業温度に素早く到達させることができるバイク排気管の触媒装置を提供する。
【解決手段】エンジン排気マニホールドとマフラーの間に設置された一つの前置排気管を含む。エンジン排気マニホールドまたは前置排気管は二次エアを供給するための前置供給パイプと連結しており、マフラーの内部には最低一つの触媒コンバーターが設けられ、前置供給パイプ後方の前置排気管の内部には触媒が被覆されている。
【選択図】図１A catalyst in a front exhaust pipe purifies engine exhaust gas using secondary air supplied from a front supply pipe, and raises the temperature of the engine exhaust gas particularly when the engine is started. And a catalyst device for a motorcycle exhaust pipe that can quickly reach the working temperature required for exhaust gas purification.
One exhaust pipe is installed between the engine exhaust manifold and the muffler. The engine exhaust manifold or front exhaust pipe is connected to a front supply pipe for supplying secondary air, and at least one catalytic converter is provided inside the muffler, and the front exhaust behind the front supply pipe. The inside of the tube is coated with a catalyst.
[Selection] Figure 1

Description

本考案はバイクエンジンの排気ガス排出経路における一つの前置排気管の内部に触媒を設置した一種のエンジン排気ガス浄化装置に関するものである。 The present invention relates to a kind of engine exhaust gas purification device in which a catalyst is installed inside one front exhaust pipe in an exhaust gas exhaust path of a motorcycle engine.

年々厳しくなる自動車排気ガス規制に対応するため、一般ではバイクエンジンの排気ガス排出経路に触媒コンバーターを設置することが多く、その触媒コンバーターとは一つの金属筒の内側に触媒を被覆したもので、触媒成分にはパラジウム（Ｐｄ）、白金（Ｐｔ）、ロジウム（Ｒｈ）等の貴金属元素が含まれており、Ｐｄ及びＰｔ元素は酸化作用により排気ガス中の有害物質 ＣＯやＨＣを無害なＣＯ２及びＨ２Ｏに変換し、さらにＲｈ元素は排気ガス中の有害物質ＮＯＸ（窒素酸化物）を無害なＮ２及びＯ２に還元させ、エンジンの排気ガスを浄化し、空気汚染を防止する役割を果たしている。 In order to comply with automobile exhaust gas regulations that are becoming stricter year by year, in many cases, a catalytic converter is often installed in the exhaust gas exhaust path of a motorcycle engine, and the catalytic converter is a metal cylinder covered with a catalyst, The catalyst component contains noble metal elements such as palladium (Pd), platinum (Pt), and rhodium (Rh), and the Pd and Pt elements are CO 2 that does not harm harmful substances CO and HC in the exhaust gas by oxidation. and converted to H 2 O, further Rh element is reduced harmful substances NO X in the exhaust gas (nitrogen oxides) to harmless N 2 and O 2, and purifying the exhaust gas of the engine, to prevent air pollution Playing a role.

そして、エンジン排気経路内の触媒による排気ガス中の有害物質の酸化及び還元が最も効率よく行われるのはエンジン排気ガスの空燃比（Ａｉｒ／Ｆｕｅｌ）を１４．７前後に設定した時である。また、バイクエンジンの起動直後、燃料の不完全燃焼により有害な排気ガスが大量に発生するため、先行技術では、触媒による排気ガス浄化效率を高めるため、バイクエンジンを起動させた時に触媒コンバーターの前方に二次エアを導入し、エンジンの排気ガスの空燃比を１４．７またはそれよりも大きくすることで触媒に充分なＯ２を与え、酸化作用によるＣＯ及びＨＣからＣＯ２及びＨ２Ｏへの変換を行うとともに、エンジンの排気ガスに含まれているＣＯ及びＨＣの生成量が減少した時に二次エアの導入を中止させ、エンジンの排気ガスの空燃比を
１４．７よりも小さくすることで、排気ガス中のＮＯＸをＮ２及びＯ２に還元させる触媒の働きを助けている。 The most efficient oxidation and reduction of harmful substances in the exhaust gas by the catalyst in the engine exhaust path occurs when the air-fuel ratio (Air / Fuel) of the engine exhaust gas is set to around 14.7. In addition, immediately after starting the motorcycle engine, a large amount of harmful exhaust gas is generated due to incomplete combustion of the fuel. In the prior art, in order to improve the exhaust gas purification efficiency by the catalyst, the front of the catalytic converter is turned on when the motorcycle engine is started. Secondary air is introduced into the engine, and the air-fuel ratio of the exhaust gas of the engine is increased to 14.7 or more to give sufficient O 2 to the catalyst, and from CO and HC due to oxidation to CO 2 and H 2 O And the introduction of secondary air is stopped when the amount of CO and HC produced in the engine exhaust gas decreases, and the air-fuel ratio of the engine exhaust gas is made smaller than 14.7. Thus, the catalyst helps reduce NO X in the exhaust gas to N 2 and O 2 .

しかし、上述のエンジン排気管内の触媒は排気ガスの加熱作用によって必要な作業温度に到達しないと有害な排気ガスに対して浄化（包含酸化及還元）を行うことができない。例えば、バイクのエンジンを起動した直後、触媒はすぐに必要な作業温度に達することができないため、大量な有害排気ガスを外部の大気中に排出することになる。 However, the catalyst in the engine exhaust pipe described above cannot purify (include oxidation and reduction) on harmful exhaust gas unless the required working temperature is reached by the heating action of the exhaust gas. For example, immediately after starting a motorcycle engine, the catalyst cannot quickly reach the required working temperature, which results in a large amount of harmful exhaust gas being discharged into the outside atmosphere.

この問題を解決するため、台湾第Ｍ２８７８６９号特許では一種のエンジン排気ガス浄化装置が掲げられ、それはマフラー内部に一つの後置型触媒コンバーターを設置し、マフラーとエンジンの間にある前置排気管の内部に一つの前置型触媒コンバーターを設置するという構造により、バイクのエンジンを起動させた時、まずエンジン排気ガスと前置型触媒コンバーターの触媒に酸化反応を起し、エンジンの排気ガスの温度を上げてから後置型触媒コンバーターの温度を必要とする作業温度に素早く到達させ、効率よく排気ガスの浄化を行うという仕組みである。但し、上述の前置型触媒コンバーターは前置排気管の内部に溶接固定されているため、孔径１５〜３０ｍｍという前置排気管の限られた空間にとっては設置が極めて難しく、さらに触媒コンバーターを複数設置するという構造は生産コストに見合わず、改善の余地があると思われる。
台湾第Ｍ２８７８６９号特許 In order to solve this problem, Taiwanese M287869 patent discloses a kind of engine exhaust gas purification device, which has a rear catalytic converter installed inside the muffler, and a front exhaust pipe located between the muffler and the engine. When the motorcycle engine is started up, the internal exhaust gas and the catalyst of the pre-catalytic converter first undergo an oxidation reaction due to the structure in which a single pre-catalytic converter is installed inside, and the temperature of the exhaust gas of the engine In this mechanism, the temperature of the post-catalyst converter is quickly reached the required working temperature and the exhaust gas is efficiently purified. However, since the above-mentioned pre-catalytic converter is welded and fixed inside the pre-exhaust pipe, it is extremely difficult to install in a limited space of the pre-exhaust pipe having a hole diameter of 15 to 30 mm, and more than one catalytic converter is used. The installation structure does not match the production cost, and there seems to be room for improvement.
Taiwan M287869 patent

本考案の前置排気管の内部に被覆されている触媒はエンジンを起動した直後にエンジンの排気ガスの温度を上昇させ、マフラー内の触媒コンバーターの温度を排気ガス浄化に必要な作業温度に素早く到達させることができる。 Immediately after starting the engine, the catalyst coated inside the front exhaust pipe of the present invention raises the temperature of the exhaust gas of the engine, and the temperature of the catalytic converter in the muffler is quickly adjusted to the working temperature required for exhaust gas purification. Can be reached.

先行技術の問題点を解決すべく、本考案１５〜３０ｍｍ孔径のバイク前置排気管に適用できるうえ、バイクのエンジンを起動させた直後、排気ガス中の有害物質に対して効率的に浄化を行える一種の触媒装置を考案した。 In order to solve the problems of the prior art, the present invention can be applied to a motorcycle pre-exhaust pipe with a 15 to 30 mm hole diameter, and immediately after starting the motorcycle engine, it efficiently purifies harmful substances in the exhaust gas. We have devised a kind of catalytic device that can be used.

上述の目的を達成するため、本考案におけるバイク排気管の触媒装置はエンジン排気マニホールドとマフラーの間に設置され、一つの前置排気管を含み、排気マニホールドまたは前置排気管は二次エアを供給するための一つの前置供給パイプと連結しており、マフラーの内部には最低一つの触媒コンバーターが設けられている。その特徴を以下に示す。前置供給パイプ後方の前置排気管の内部には触媒が被覆されており、その触媒は前置供給パイプから供給される二次エアを利用してエンジンの排気ガスに対して浄化を行うことができる。 In order to achieve the above-mentioned object, the motorcycle exhaust pipe catalyst device according to the present invention is installed between the engine exhaust manifold and the muffler and includes one front exhaust pipe, and the exhaust manifold or the front exhaust pipe receives the secondary air. It is connected to one pre-feed pipe for supplying, and at least one catalytic converter is provided inside the muffler. The characteristics are shown below. The interior of the front exhaust pipe behind the front supply pipe is covered with a catalyst, and the catalyst purifies the exhaust gas of the engine using secondary air supplied from the front supply pipe. Can do.

図１は本考案における第一実施例の局部断面図を掲げており、図中では、本考案のバイク排気管の触媒装置は４ストバイクエンジン１の排気マニホールド１１とマフラー２の間に設置され、一つの前置排気管３を含み、さらにエンジン排気マニホールド１１は二次エアを供給するための一つの前置供給パイプ４１と連結しており、マフラー２の内部には最低一つの触媒コンバーター５が設置されている。この構造において、 FIG. 1 shows a local sectional view of a first embodiment of the present invention, in which the motorcycle exhaust pipe catalyst device of the present invention is installed between an exhaust manifold 11 and a muffler 2 of a four-stroke motorcycle engine 1. The engine exhaust manifold 11 is connected to one front supply pipe 41 for supplying secondary air, and at least one catalytic converter 5 is provided inside the muffler 2. Is installed. In this structure,

二次エアはエンジン１が動作した時に前置排気管３と排気マニホールド１１の内部で生成された間歇性負圧を動力源として、前置供給パイプ４１を通じて前置排気管３及びマフラー２内部へ二次エアを継続的に供給している。
触媒コンバーター５は前置排気管３及び一つの連結パイプ３１を介してマフラー２内部と連結しており、さらにパラジウム（Ｐｄ）、白金（Ｐｔ）、ロジウム（Ｒｈ）等の触媒が被覆されている。 The secondary air is supplied to the front exhaust pipe 3 and the muffler 2 through the front supply pipe 41 using the intermittent negative pressure generated in the front exhaust pipe 3 and the exhaust manifold 11 when the engine 1 is operated as a power source. Secondary air is continuously supplied.
The catalytic converter 5 is connected to the inside of the muffler 2 through the front exhaust pipe 3 and one connecting pipe 31, and is further coated with a catalyst such as palladium (Pd), platinum (Pt), rhodium (Rh). .

前置供給パイプ４１後方の前置排気管３の内壁にも同じ成分の触媒５０が被覆されている（図２を参照）。
上述の配置に基づき本考案を実施した場合、エンジン１を起動させた直後、前置排気管３及び排気マニホールド１１内部の間歇性負圧作用により、二次エアは前置供給パイプ４１を通じて前置排気管３の内部に導入され（図３を参照）、前置排気管３内部の触媒５０に充分な酸素を与える。
この時、前置排気管３内部の触媒５０は空燃比≧１４．７の排気ガスと酸化反応を起こし、排気ガス中の有害物質ＣＯやＨＣを無害なＣＯ２及びＨ２Ｏに変換するとともに、エンジン排気ガスの温度を上昇させる。その後、一定温度に到達した排気ガスは連結パイプ３１を通じてマフラー２へ送られ、さらに触媒コンバーター５の働きにより、浄化に必要な作業温度に素早く到達し、排気ガス中の有害物質ＮＯＸを無害なＮ２及びＯ２に還元させることができる。 The inner wall of the front exhaust pipe 3 behind the front supply pipe 41 is also covered with the catalyst 50 having the same component (see FIG. 2).
When the present invention is implemented based on the above-described arrangement, immediately after the engine 1 is started, secondary air is introduced through the front supply pipe 41 due to the intermittent negative pressure action inside the front exhaust pipe 3 and the exhaust manifold 11. It is introduced into the exhaust pipe 3 (see FIG. 3) and gives sufficient oxygen to the catalyst 50 inside the front exhaust pipe 3.
At this time, the catalyst 50 in the front exhaust pipe 3 causes an oxidation reaction with the exhaust gas having an air-fuel ratio ≧ 14.7, and converts harmful substances CO and HC in the exhaust gas into harmless CO 2 and H 2 O. Increase the engine exhaust gas temperature. After that, the exhaust gas that has reached a certain temperature is sent to the muffler 2 through the connecting pipe 31, and further, due to the action of the catalytic converter 5, quickly reaches the working temperature necessary for purification, and the harmful substance NOX in the exhaust gas is harmless N it can be reduced to 2, and O 2.

また、上述の前置供給パイプ４０を前置排気管３に連結させた状態でも（図４を参照）、二次エアを前置排気管３及びマフラー２内部に供給することができる。さらに、触媒５０は前置排気管３の内壁だけでなく、それと連結する連結パイプ３１の内壁まで延伸して被覆することも可能である（図４ａを参照）。 Even in a state where the above-described front supply pipe 40 is connected to the front exhaust pipe 3 (see FIG. 4), secondary air can be supplied into the front exhaust pipe 3 and the muffler 2. Furthermore, the catalyst 50 can be extended to cover not only the inner wall of the front exhaust pipe 3 but also the inner wall of the connecting pipe 31 connected thereto (see FIG. 4a).

図５は本考案における第二実施例の局部断面図を掲げている。図中では、２ストバイクエンジン１ａの排気マニホールド１１ａとマフラー２ａの間には一つの前置排気管３ａが装着され、エンジン排気マニホールド １１ａは二次エアを供給するための一つの前置供給パイプ４１ａと連結しており、マフラー２ａ内の前置排気管３ａの末端には最低一つの触媒コンバーター５ａが設置され、前置供給パイプ４１ａ後方の前置排気管３ａの内壁の局所または全面に触媒５０ａが被覆されている。これにより、上述の第一実施例と同じ效果を得ることができる。 FIG. 5 shows a local sectional view of the second embodiment of the present invention. In the figure, one front exhaust pipe 3a is mounted between the exhaust manifold 11a and the muffler 2a of the 2-stroke motorcycle engine 1a, and the engine exhaust manifold 11a is one front supply pipe for supplying secondary air. 41a, and at least one catalytic converter 5a is installed at the end of the front exhaust pipe 3a in the muffler 2a. The catalyst is locally or entirely on the inner wall of the front exhaust pipe 3a behind the front supply pipe 41a. 50a is coated. As a result, the same effect as in the first embodiment can be obtained.

図６は本考案における第三実施例の局部断面図を掲げている。図中では、４ストバイクエンジン１の排気マニホールド１１とマフラー２の間には前置排気管３が設置され、エンジン排気マニホールド１１は二次エアを供給するための一つの前置供給パイプ４１と連結しており、マフラー２の内部には一つの前置型触媒コンバーター５１及び一つの後置型触媒コンバーター５２が設置されている。前置型及び後置型触媒コンバーター５１、５２は前置排気管３を介して複数の連結パイプ３２、３３とともにマフラー２の内部に連結され、さらに後置型触媒コンバーター５２の前方の連結パイプ３３には二次エアを供給するための一つの後置供給パイプ４２が連結され、前置供給パイプ４１の後方の前置排気管３の内壁には触媒５０が被覆されている。 FIG. 6 shows a local sectional view of the third embodiment of the present invention. In the figure, a front exhaust pipe 3 is installed between the exhaust manifold 11 and the muffler 2 of the 4-stroke motorcycle engine 1, and the engine exhaust manifold 11 includes one front supply pipe 41 for supplying secondary air. In the muffler 2, one front catalytic converter 51 and one rear catalytic converter 52 are installed inside the muffler 2. The front and rear catalytic converters 51 and 52 are connected to the inside of the muffler 2 together with the plurality of connecting pipes 32 and 33 via the front exhaust pipe 3, and further to the connecting pipe 33 in front of the rear catalytic converter 52. One rear supply pipe 42 for supplying secondary air is connected, and the inner wall of the front exhaust pipe 3 behind the front supply pipe 41 is covered with a catalyst 50.

上述の構造により、前置排気管３内の触媒５０は前置供給パイプ４１から供給された二次エアを利用して、排気ガス空燃比≧１４．７を保ち、エンジンの排気ガスと触媒５０に酸化反応を起こして排気ガスを高温状態にする。この時、温度が急速に上昇したエンジン排気ガスは連結パイプ３２によって導かれ、前置型触媒コンバーター５１の温度が素早く作業温度になるように前置型触媒コンバーター５１に対して加熱を行い、エンジンの排気ガスを還元させることができる。この後、排気ガスは連結パイプ３３を経由する途中で後置供給パイプ４２から導入された二次エアと混合し、後置型触媒コンバーター５２を通過した時、酸化作用により排気ガス中に残留している有害物質ＣＯ及びＨＣを無害なＣＯ２及びＨ２Ｏに変換させ、触媒による排気ガス浄化のダブル効果を実現できる。 With the structure described above, the catalyst 50 in the front exhaust pipe 3 uses the secondary air supplied from the front supply pipe 41 to maintain the exhaust gas air-fuel ratio ≧ 14.7, and the engine exhaust gas and the catalyst 50 are maintained. Oxidation reaction is caused in the exhaust gas to bring the exhaust gas to a high temperature state. At this time, the engine exhaust gas whose temperature has risen rapidly is guided by the connecting pipe 32, and the front catalytic converter 51 is heated so that the temperature of the front catalytic converter 51 quickly reaches the working temperature. The exhaust gas can be reduced. Thereafter, the exhaust gas is mixed with the secondary air introduced from the post supply pipe 42 in the course of passing through the connecting pipe 33, and remains in the exhaust gas due to the oxidation action when passing through the post catalytic converter 52. The harmful substances CO and HC present can be converted into harmless CO 2 and H 2 O, and a double effect of exhaust gas purification by the catalyst can be realized.

上述の実施例は本考案における推奨実施例であり、本考案の実用新案登録請求範囲を限定するではない。本考案の精神及び原則に基づく変更または改良は全て後述の実用新案登録申請の範疇に含まれるものとする。 The above-described embodiments are recommended embodiments of the present invention, and do not limit the scope of claims for utility model registration of the present invention. All modifications or improvements based on the spirit and principle of the present invention shall be included in the category of utility model registration application described below.

本考案における第一実施例の局部断面図Local sectional view of the first embodiment of the present invention 図１の局部拡大図Local enlarged view of FIG. 本考案における第一実施例の動作イメージ図Operation image of the first embodiment of the present invention 本考案における第一実施例の別の部分を示す断面図Sectional drawing which shows another part of 1st Example in this invention 本考案における第一実施例的附加実施断面図A sectional view of the first embodiment in the present invention. 本考案における第二実施例の局部断面図Local sectional view of the second embodiment of the present invention 本考案における第三実施例の局部断面図Local sectional view of the third embodiment of the present invention 本考案における第三実施例の動作イメージ図Operation image of the third embodiment of the present invention

符号の説明Explanation of symbols

１、１ａ エンジン
１１、１１ａ 排気マニホールド
２、２ａ マフラー
３、３ａ 前置排気管
３１、３２、３３ 連結パイプ
４０、４１、４１ａ 前置供給パイプ
４２ 後置供給パイプ
５、５ａ 触媒コンバーター
５０、５０ａ 触媒
５１ 前置型触媒コンバーター
５２ 後置型触媒コンバーター 1, 1a Engine 11, 11a Exhaust manifold 2, 2a Muffler 3, 3a Pre-exhaust pipes 31, 32, 33 Connection pipes 40, 41, 41a Pre-supply pipe 42 Subsequent supply pipes 5, 5a Catalytic converters 50, 50a Catalyst 51 Pre-type catalytic converter 52 Post-type catalytic converter

Claims (4)

エンジン排気マニホールドとマフラーの間に設置され、一つの前置排気管を含む。エンジン排気マニホールドまたは前置排気管は二次エアを供給するための前置供給パイプと連結しており、前置供給パイプ後方の前置排気管の内部には触媒が被覆され、前置排気管内の触媒は前置供給パイプから供給される二次エアを利用してエンジンの排気ガスの浄化を行うことができることを特徴とするバイク排気管触媒装置。 It is installed between the engine exhaust manifold and the muffler and contains one pre-exhaust pipe. The engine exhaust manifold or front exhaust pipe is connected to a front supply pipe for supplying secondary air, and the inside of the front exhaust pipe behind the front supply pipe is covered with a catalyst, and the inside of the front exhaust pipe The exhaust gas catalyst device for a motorcycle is characterized in that the exhaust gas of the engine can be purified by using secondary air supplied from a front supply pipe. 前記触媒コンバーターの設置数は複数とし、最低一つの前置型触媒コンバーター及び最低一つの後置型触媒コンバーターを含み、前置型触媒コンバーターと後置型触媒コンバーターの間には一つの二次エア供給用後置供給パイプが設置されていることを特徴とする請求項１に記載のバイク排気管触媒装置。 The number of installed catalytic converters is plural, including at least one pre-catalyst converter and at least one post-catalyst converter, and one secondary air supply between the pre-catalyst converter and the post-catalyst converter. The motorcycle exhaust pipe catalyst device according to claim 1, wherein a post supply pipe is installed. エンジン排気マニホールドとマフラーの間に設置され、一つの前置排気管を含み、前置排気管は二次エアを供給するための一つの前置供給パイプと連結しており、マフラーの内部には最低一つの触媒コンバーターが設けられており、前置供給パイプ後方の前置排気管の内部には触媒が被覆され、前置排気管内の触媒は前置供給パイプから供給される二次エアを利用してエンジンの排気ガスの浄化を行うことができることができることを特徴とするバイク排気管触媒装置。 It is installed between the engine exhaust manifold and the muffler and includes one pre-exhaust pipe. The pre-exhaust pipe is connected to one pre-supply pipe for supplying secondary air. At least one catalytic converter is provided, the inside of the front exhaust pipe behind the front supply pipe is covered with catalyst, and the catalyst in the front exhaust pipe uses secondary air supplied from the front supply pipe A motorcycle exhaust pipe catalyst device characterized in that the exhaust gas of the engine can be purified. 前記触媒コンバーターの設置数は複数とし、最低一つの前置型触媒コンバーター及び最低一つの後置型触媒コンバーターを含み、前置型触媒コンバーターと後置型触媒コンバーターの間には一つの二次エア供給用後置供給パイプが設置されていることを特徴とする請求項３に記載のバイク排気管触媒装置。 The number of installed catalytic converters is plural, including at least one pre-catalyst converter and at least one post-catalyst converter, and one secondary air supply between the pre-catalyst converter and the post-catalyst converter. The motorcycle exhaust pipe catalyst device according to claim 3, wherein a post supply pipe is installed.
JP2007002964U 2007-01-29 2007-04-25 Motorcycle exhaust pipe catalyst device Expired - Fee Related JP3133279U (en)

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TW096201715U TWM316930U (en) 2007-01-29 2007-01-29 Catalyst device for motorcycle exhaust pipe

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US8647583B2 (en) * 2010-04-14 2014-02-11 Toyota Jidosha Kabushiki Kaisha Electric heating type catalyst and a method for manufacturing the same

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