JPWO2017141428A1 - Exhaust heat recovery device - Google Patents

Exhaust heat recovery device Download PDF

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JPWO2017141428A1
JPWO2017141428A1 JP2017567917A JP2017567917A JPWO2017141428A1 JP WO2017141428 A1 JPWO2017141428 A1 JP WO2017141428A1 JP 2017567917 A JP2017567917 A JP 2017567917A JP 2017567917 A JP2017567917 A JP 2017567917A JP WO2017141428 A1 JPWO2017141428 A1 JP WO2017141428A1
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exhaust
tubular member
heat recovery
air
vehicle
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高橋　貴弘
貴弘 高橋
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Futaba Industrial Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)

Abstract

排気熱回収装置は、車両に搭載され、伝達部と、流入口と、流出口とを有する。伝達部は、車両のエンジンから排出された排ガスの熱を、車両の外部から流入した空気に伝達させる伝達空間を有する。また、流入口は、伝達空間に空気を流入させる。また、流出口は、燃料タンクから流入した燃料蒸気を吸着材に吸着させると共に、空気により吸着材に吸着した燃料蒸気をエンジンに流出させるキャニスタに向けて、伝達空間から空気を流出させる。そして、伝達部は、管状部材と、外殻部材とを有する。管状部材は、排ガスを車両の外部に排出する排気管の側面をなす。また、外殻部材は、管状部材を側方から取り囲んだ状態で配置され、管状部材との間に伝達空間をなす隙間を有した状態で、管状部材を側方から覆う。The exhaust heat recovery device is mounted on a vehicle and includes a transmission unit, an inflow port, and an outflow port. The transmission unit has a transmission space for transmitting the heat of the exhaust gas discharged from the engine of the vehicle to the air flowing in from the outside of the vehicle. The inflow port allows air to flow into the transmission space. Further, the outlet allows the fuel vapor flowing in from the fuel tank to be adsorbed by the adsorbent, and causes the air to flow out from the transmission space toward the canister that causes the fuel vapor adsorbed to the adsorbent by air to flow out to the engine. The transmission unit includes a tubular member and an outer shell member. The tubular member forms a side surface of an exhaust pipe that discharges exhaust gas to the outside of the vehicle. The outer shell member is disposed in a state of surrounding the tubular member from the side, and covers the tubular member from the side with a gap forming a transmission space between the outer member and the tubular member.

Description

本開示は、キャニスタに蓄積された燃料の脱離に用いられる空気を加熱するための排気熱回収装置に関する。   The present disclosure relates to an exhaust heat recovery apparatus for heating air used for desorption of fuel accumulated in a canister.

活性炭等の吸着材により、車両の燃料タンクから発生する燃料蒸気を蓄積するキャニスタが知られている。キャニスタでは、エンジンの負圧により車外から流入した空気（以後、パージエアと記載）により、吸着材に吸着した燃料を脱離するパージが行われる。パージの際、吸着材から脱離した燃料はエンジンに向けて流出される。   There is known a canister that accumulates fuel vapor generated from a fuel tank of a vehicle by an adsorbent such as activated carbon. In the canister, purging for desorbing the fuel adsorbed on the adsorbent is performed by air flowing from outside the vehicle due to the negative pressure of the engine (hereinafter referred to as purge air). During purging, the fuel desorbed from the adsorbent flows out toward the engine.

しかし、近年では、車両のハイブリッド化等によりパージエアの量が減少している。その結果、パージによる燃料の脱離が困難となる。これに対し、特許文献１に記載された技術では、排気管の熱により加熱された伝熱液体をキャニスタに送ることで、キャニスタの活性炭を加熱する。これにより、活性炭から燃料が脱離し易くなる。   However, in recent years, the amount of purge air has decreased due to the hybridization of vehicles and the like. As a result, it becomes difficult to desorb fuel by purging. On the other hand, in the technique described in Patent Document 1, the activated carbon of the canister is heated by sending the heat transfer liquid heated by the heat of the exhaust pipe to the canister. Thereby, the fuel is easily detached from the activated carbon.

特開２００８−１５７０７３号公報JP 2008-157073 A

しかしながら、特許文献１では、伝熱液体がキャニスタの内部に配置された液体通路を流下することで、活性炭が加熱される。このため、液体通路から離れた位置にある活性炭の加熱が不十分となる恐れがあり、その結果、燃料を良好に脱離できない可能性がある。   However, in Patent Document 1, the activated carbon is heated by causing the heat transfer liquid to flow down the liquid passage disposed inside the canister. For this reason, there is a possibility that heating of the activated carbon at a position away from the liquid passage may be insufficient, and as a result, the fuel may not be desorbed satisfactorily.

キャニスタの吸着材から燃料を良好に脱離するのが望ましい。   It is desirable to successfully desorb the fuel from the canister adsorbent.

本開示の一側面は、車両に搭載される排気熱回収装置であって、伝達部と、流入口と、流出口とを有する。伝達部は、車両のエンジンから排出された排ガスの熱を、車両の外部から流入した空気に伝達させる伝達空間を有する。また、流入口は、伝達空間に空気を流入させる。また、流出口は、燃料タンクから流入した燃料蒸気を吸着材に吸着させると共に、空気により吸着材に吸着した燃料蒸気をエンジンに流出させるキャニスタに向けて、伝達空間から空気を流出させる。そして、伝達部は、管状部材と、外殻部材とを有する。管状部材は、排ガスを車両の外部に排出する排気管の側面をなす。また、外殻部材は、管状部材を側方から取り囲んだ状態で配置され、管状部材との間に伝達空間をなす隙間を有した状態で、管状部材を側方から覆う。   One aspect of the present disclosure is an exhaust heat recovery device mounted on a vehicle, and includes a transmission unit, an inflow port, and an outflow port. The transmission unit has a transmission space for transmitting the heat of the exhaust gas discharged from the engine of the vehicle to the air flowing in from the outside of the vehicle. The inflow port allows air to flow into the transmission space. Further, the outlet allows the fuel vapor flowing in from the fuel tank to be adsorbed by the adsorbent, and causes the air to flow out of the transmission space toward the canister that causes the fuel vapor adsorbed to the adsorbent by air to flow out to the engine. The transmission unit includes a tubular member and an outer shell member. The tubular member forms a side surface of an exhaust pipe that discharges exhaust gas to the outside of the vehicle. The outer shell member is disposed in a state of surrounding the tubular member from the side, and covers the tubular member from the side with a gap forming a transmission space between the outer member and the tubular member.

このような構成によれば、キャニスタでのパージに用いられるパージエアの温度を上昇させることができる。そして、パージの際、キャニスタに進入したパージエアはキャニスタ内部で拡散し、多くの吸着材と接触する。このため、広範囲にわたって吸着材を加熱することが可能となる。したがって、パージの際、キャニスタの吸着材から良好に燃料が脱離される。   According to such a configuration, the temperature of the purge air used for purging in the canister can be raised. When purging, purge air that has entered the canister diffuses inside the canister and comes into contact with many adsorbents. For this reason, it becomes possible to heat an adsorbent over a wide range. Therefore, the fuel is favorably desorbed from the adsorbent of the canister during the purge.

また、本開示において、管状部材は、当該管状部材の周囲を側方から取り囲んだ状態で配置され、側方に向かって突出する部位であって、内部に、排気管を流下する排ガスが進入可能な空間を有する複数の周回部を有していても良い。そして、複数の周回部は、管状部材が延びる方向に沿って並んで配置されていても良い。   Further, in the present disclosure, the tubular member is arranged in a state of surrounding the tubular member from the side and protrudes toward the side, and the exhaust gas flowing down the exhaust pipe can enter the inside. You may have several circumference parts which have a space. And a plurality of circumference parts may be arranged along with the direction where a tubular member extends.

このような構成によれば、管状部材における伝達空間内の空気（換言すれば、パージエア）に触れる部分の面積が広くなる。このため、パージエアの温度をより効率的に上昇させ、昇温時間を短縮することができる。   According to such a structure, the area of the part which contacts the air (in other words purge air) in the transmission space in a tubular member becomes large. For this reason, the temperature of purge air can be raised more efficiently and the temperature raising time can be shortened.

また、本開示において、管状部材を流下する排ガスの向きを、流下方向とし、流入口は、流出口の流下方向側に位置しても良い。
このような構成によれば、伝達空間を流下するパージエアの方向と、管状部材における排ガスの流下方向とが反対になる。このため、これらの方向が同じである場合に比べ、排ガスからパージエアに熱を伝達する際の効率を向上させることができる。Moreover, in this indication, the direction of the waste gas which flows down a tubular member may be made into the flow direction, and an inflow port may be located in the flow direction direction side of an outflow port.
According to such a configuration, the direction of purge air flowing down the transmission space is opposite to the flow direction of exhaust gas in the tubular member. For this reason, compared with the case where these directions are the same, the efficiency at the time of transferring heat from exhaust gas to purge air can be improved.

本実施形態の排気熱回収装置等の配置状態を示す説明図である。It is explanatory drawing which shows arrangement | positioning states, such as the exhaust heat recovery apparatus of this embodiment. 図２Ａは、本実施形態の排気熱回収装置を排気管の側方から見た側面図である。図２Ｂは、本実施形態の排気熱回収装置を排気管の側方から見た際の内部構造を示す断面図である。図２Ｃは、本実施形態の排気熱回収装置を排気管の上流側から見た側面図である。FIG. 2A is a side view of the exhaust heat recovery apparatus of the present embodiment as viewed from the side of the exhaust pipe. FIG. 2B is a cross-sectional view showing the internal structure when the exhaust heat recovery apparatus of the present embodiment is viewed from the side of the exhaust pipe. FIG. 2C is a side view of the exhaust heat recovery device of the present embodiment as viewed from the upstream side of the exhaust pipe.

１…排気熱回収装置、２…キャニスタ、５…排気管、１０…側面部、１１…上流側蓋部、１２…下流側蓋部、１３…流出部、１４…流入部、１５…伝達空間、５０…排気部、５１…周回部、６１…パージ管、６２…パージ管。   DESCRIPTION OF SYMBOLS 1 ... Exhaust heat recovery apparatus, 2 ... Canister, 5 ... Exhaust pipe, 10 ... Side surface part, 11 ... Upstream side cover part, 12 ... Downstream side cover part, 13 ... Outflow part, 14 ... Inflow part, 15 ... Transmission space, 50 ... exhaust part, 51 ... circulation part, 61 ... purge pipe, 62 ... purge pipe.

以下、本開示の実施形態について図面を用いて説明する。なお、本開示の実施の形態は、下記の実施形態に何ら限定されることはなく、本開示の技術的範囲に属する限り種々の形態を採りうる。   Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Embodiments of the present disclosure are not limited to the following embodiments, and various forms can be adopted as long as they belong to the technical scope of the present disclosure.

［構成の説明］
本実施形態の排気熱回収装置１は、キャニスタ２と共に車両に搭載される（図１）。以後、排気熱回収装置１が搭載された車両を、自車両と記載する。[Description of configuration]
The exhaust heat recovery apparatus 1 of this embodiment is mounted on a vehicle together with a canister 2 (FIG. 1). Hereinafter, a vehicle on which the exhaust heat recovery device 1 is mounted is referred to as a host vehicle.

キャニスタ２は、略直方体形状の合成樹脂製の容器を有する。容器は、１又は複数の空間（以後、室と記載）を有する。室には、燃料蒸気を吸着するための吸着材が配置される。吸着材とは、例えば、活性炭、ペレット、又は、ハニカム吸着体等であっても良い。なお、ペレットとは、活性炭をバインダにより固めて成形された粒状の部材である。また、ハニカム吸着体とは、蒸発した燃料の吸着と脱離とが可能なハニカム構造の部材である。ハニカム吸着体は、予め定められた方向に延びる筒状の部材であり、該方向に延びる流体の通路を多数有する。ハニカム吸着体は、活性炭をバインダにより固めることで形成されても良い。   The canister 2 has a substantially rectangular parallelepiped synthetic resin container. The container has one or a plurality of spaces (hereinafter referred to as chambers). An adsorbent for adsorbing fuel vapor is disposed in the chamber. The adsorbent may be, for example, activated carbon, pellets, or a honeycomb adsorbent. The pellet is a granular member formed by solidifying activated carbon with a binder. The honeycomb adsorbent is a member having a honeycomb structure capable of adsorbing and desorbing evaporated fuel. The honeycomb adsorbent is a cylindrical member extending in a predetermined direction, and has a large number of fluid passages extending in the direction. The honeycomb adsorbent may be formed by solidifying activated carbon with a binder.

キャニスタ２は、流入管６３を介して自車両の燃料タンク３に接続されている。燃料タンク３に蓄積された燃料から生じた燃料蒸気は、流入管６３からキャニスタ２の室に流入する。そして、燃料蒸気は、室に配置された吸着材に吸着する。これにより、キャニスタ２に燃料が蓄積される。   The canister 2 is connected to the fuel tank 3 of the host vehicle via an inflow pipe 63. Fuel vapor generated from the fuel accumulated in the fuel tank 3 flows into the chamber of the canister 2 through the inflow pipe 63. The fuel vapor is adsorbed by the adsorbent disposed in the chamber. As a result, fuel is accumulated in the canister 2.

また、キャニスタ２には、パージ管６１，６２を介して、自車両外部の空気が流入する。該空気は後述するパージに用いられる。また、該空気は、燃料を注入する注入部の周辺に配置された開口部からパージ管６１，６２に流入する。なお、注入部から注入された燃料は、インレットパイプ６０を介して燃料タンク３に流入する。   In addition, air outside the host vehicle flows into the canister 2 through the purge pipes 61 and 62. The air is used for purging described later. In addition, the air flows into the purge pipes 61 and 62 from an opening disposed around the injection part for injecting fuel. The fuel injected from the injection part flows into the fuel tank 3 through the inlet pipe 60.

また、キャニスタ２は、流出管６４を介して自車両のエンジン４の吸気管に接続されている。そして、エンジン４の吸気負圧により、パージ管６１，６２を介して、自車両外部の空気（以後、パージエアと記載）がキャニスタ２の室に流入する。この時、パージエアにより吸着材に吸着した燃料が脱離し、該燃料は流出管６４を介してエンジンに向けて流出する。これにより、吸着材に吸着していた燃料が除去され、吸着材が再生される。以後、このようにして吸着材を再生させることを、パージと記載する。   The canister 2 is connected to the intake pipe of the engine 4 of the host vehicle via the outflow pipe 64. Then, due to the intake negative pressure of the engine 4, air outside the vehicle (hereinafter referred to as purge air) flows into the chamber of the canister 2 through the purge pipes 61 and 62. At this time, the fuel adsorbed to the adsorbent by the purge air is desorbed, and the fuel flows out to the engine via the outflow pipe 64. Thereby, the fuel adsorbed on the adsorbent is removed and the adsorbent is regenerated. Hereinafter, this regeneration of the adsorbent is referred to as purge.

また、パージ管６１，６２には、排気熱回収装置１が設けられている（図２Ａ〜２Ｃ）。以後、排ガスが流下する排気管５の上流側，下流側を、単に、上流側，下流側と記載する。また、排ガスが排気管５を流下する方向（換言すれば、上流側から下流側に向かう方向）を、流下方向と記載する。   Moreover, the exhaust pipe | tube heat recovery apparatus 1 is provided in the purge pipes 61 and 62 (FIGS. 2A-2C). Hereinafter, the upstream side and the downstream side of the exhaust pipe 5 where the exhaust gas flows down are simply referred to as the upstream side and the downstream side. Further, the direction in which the exhaust gas flows down the exhaust pipe 5 (in other words, the direction from the upstream side to the downstream side) is referred to as the flow-down direction.

排気熱回収装置１は、エンジン４からの排ガスを車外に排出する排気管５に沿って配置されている。以後、排気管５における排気熱回収装置１が配置された区間を、回収区間と記載する。回収区間は、直線状に延びる。排気熱回収装置１は、回収区間を流下する排ガスの熱を、パージ管６１，６２を流下するパージエアに伝達する。これにより、パージエアが加熱される。排気熱回収装置１は、側面部１０と、上流側蓋部１１と、下流側蓋部１２と、流出部１３と、流入部１４と、排気部５０とを有する。   The exhaust heat recovery device 1 is disposed along an exhaust pipe 5 that exhausts exhaust gas from the engine 4 to the outside of the vehicle. Hereinafter, a section where the exhaust heat recovery device 1 in the exhaust pipe 5 is arranged is referred to as a recovery section. The collection section extends in a straight line. The exhaust heat recovery device 1 transmits the heat of the exhaust gas flowing down the recovery section to the purge air flowing down the purge pipes 61 and 62. Thereby, the purge air is heated. The exhaust heat recovery apparatus 1 includes a side surface portion 10, an upstream lid portion 11, a downstream lid portion 12, an outflow portion 13, an inflow portion 14, and an exhaust portion 50.

排気部５０は、排気管５における回収区間の側面をなす管状の部位である。本実施形態では、一例として、排気部５０は円筒状となっている。排ガスは、排気部５０の内部を流下する。   The exhaust part 50 is a tubular part forming the side surface of the collection section in the exhaust pipe 5. In this embodiment, the exhaust part 50 is cylindrical as an example. The exhaust gas flows down inside the exhaust part 50.

排気部５０の側面の形状は、蛇腹状になっている。より詳しくは、排気部５０は、その側面に、側方に突出した部位である複数の周回部５１を有する。各周回部５１は、排気部５０の周囲を側方から取り囲む（換言すれば、排気部５０の側面を周回する）１つのリブ状の部位である。各周回部５１は、Ｕ字状に湾曲した形状である。つまり、各周回部５１は、内部に、排気部５０を流下する排ガスが進入可能な空間を有する。複数の周回部５１は、排気部５０の延びる方向（換言すれば、流下方向）に並ぶ。   The shape of the side surface of the exhaust part 50 is a bellows shape. More specifically, the exhaust part 50 has a plurality of revolving parts 51 that are portions protruding sideways on the side surface thereof. Each circulating portion 51 is a single rib-shaped portion that surrounds the periphery of the exhaust portion 50 from the side (in other words, wraps around the side surface of the exhaust portion 50). Each circling portion 51 has a U-shaped curved shape. That is, each circulation part 51 has a space in which exhaust gas flowing down the exhaust part 50 can enter. The plurality of circulation parts 51 are arranged in the direction in which the exhaust part 50 extends (in other words, the flow-down direction).

これ以外にも、各周回部は、例えば、屈曲した形状となっていても良い。換言すれば、各周回部は、角を有した形状（例えば、Ｖ字状等）となっていても良い。また、各周回部は、１つのリブ状の部位ではなく、例えば、排気部５０の側方に突出する複数の突出部であっても良い。周回部としての複数の突出部は、排気部５０の周囲を側方から取り囲んだ状態（換言すれば、排気部５０の側面を周回した状態）で並ぶ。また、各突出部は、湾曲又は屈曲した形状であっても良い。   In addition to this, each circulating part may have a bent shape, for example. In other words, each circulating portion may have a cornered shape (for example, a V shape). Moreover, each circumference part may not be one rib-shaped part, but may be a plurality of protrusions that protrude to the side of the exhaust part 50, for example. The plurality of projecting portions as the circulation portions are arranged in a state of surrounding the exhaust portion 50 from the side (in other words, a state of circling the side surface of the exhaust portion 50). In addition, each protrusion may have a curved or bent shape.

また、側面部１０、上流側蓋部１１、及び、下流側蓋部１２は、排気部５０の側方を覆う。側面部１０は、管状の部位である。本実施形態では、一例として、側面部１０は、円筒状となっている。側面部１０は、排気部５０との間に隙間を有した状態で、排気部５０を側方から取り囲む。以後、該隙間を伝達空間１５と記載する。伝達空間１５は、排気部５０の側方を取り囲む環状の空間である。   Further, the side surface portion 10, the upstream lid portion 11, and the downstream lid portion 12 cover the side of the exhaust portion 50. The side part 10 is a tubular part. In the present embodiment, as an example, the side surface portion 10 has a cylindrical shape. The side part 10 surrounds the exhaust part 50 from the side with a gap between the side part 10 and the exhaust part 50. Hereinafter, the gap is referred to as a transmission space 15. The transmission space 15 is an annular space that surrounds the side of the exhaust part 50.

一方、上流側蓋部１１及び下流側蓋部１２は、環状の部位である。側面部１０における両端をなす開口では、それぞれ、該開口の中央から、上流側又は下流側に向かって排気管５が突出した状態となる。上流側蓋部１１は、排気管５と、上流側の端部をなす開口の縁部（換言すれば、側面部１０における上流側の縁部）との間の隙間を塞ぐ。また、下流側蓋部１２は、排気管５と、下流側の端部をなす開口の縁部（換言すれば、側面部１０における下流側の縁部）との間の隙間を塞ぐ。   On the other hand, the upstream lid portion 11 and the downstream lid portion 12 are annular portions. At the openings forming both ends of the side surface portion 10, the exhaust pipe 5 projects from the center of the opening toward the upstream side or the downstream side. The upstream lid 11 closes the gap between the exhaust pipe 5 and the edge of the opening that forms the upstream end (in other words, the upstream edge of the side surface 10). Further, the downstream lid 12 closes a gap between the exhaust pipe 5 and the edge of the opening that forms the downstream end (in other words, the downstream edge of the side surface 10).

また、流出部１３及び流入部１４は、筒状の部材である。流出部１３及び流入部１４は、伝達空間１５と外部の空間とを繋ぐ。流出部１３及び流入部１４は、側面部１０から側方に突出した状態で配置される。より詳しくは、流出部１３及び流入部１４は、同方向に突出し、平行に並ぶ。そして、流入部１４は下流側に、流出部１３は上流側に位置する。なお、本実施形態では、一例として、流入部１４は、側面部１０における下流側の端部の付近に配置される。また、流出部１３は、側面部１０における上流側の端部の付近に配置される。そして、流出部１３は、パージ管６２を介してキャニスタ２に接続される。また、流入部１４は、パージ管６１を介して、自車両外部の空気がパージエアとして流入する開口部に接続される。   Moreover, the outflow part 13 and the inflow part 14 are cylindrical members. The outflow part 13 and the inflow part 14 connect the transmission space 15 and the external space. The outflow part 13 and the inflow part 14 are arranged in a state of projecting laterally from the side part 10. More specifically, the outflow portion 13 and the inflow portion 14 protrude in the same direction and are arranged in parallel. The inflow portion 14 is located on the downstream side, and the outflow portion 13 is located on the upstream side. In the present embodiment, as an example, the inflow portion 14 is disposed in the vicinity of the downstream end portion of the side surface portion 10. Further, the outflow portion 13 is disposed in the vicinity of the upstream end portion of the side surface portion 10. The outflow portion 13 is connected to the canister 2 via the purge pipe 62. The inflow portion 14 is connected to an opening through which air outside the host vehicle flows as purge air via the purge pipe 61.

［効果］
本実施形態の排気熱回収装置１によれば、キャニスタ２でのパージに用いられるパージエアの温度を、上昇させることができる。そして、パージの際、キャニスタ２に進入したパージエアは、室にて拡散する。このため、広範囲にわたって吸着材を加熱することが可能となる。したがって、パージの際、キャニスタ２の吸着材から良好に燃料が脱離される。[effect]
According to the exhaust heat recovery apparatus 1 of the present embodiment, the temperature of purge air used for purging in the canister 2 can be raised. When purging, the purge air that has entered the canister 2 diffuses in the chamber. For this reason, it becomes possible to heat an adsorbent over a wide range. Therefore, the fuel is favorably desorbed from the adsorbent of the canister 2 during the purge.

また、排気熱回収装置１の排気部５０の側面の形状は、蛇腹状になっている。このため、排気部５０における伝達空間１５内の空気（換言すれば、パージエア）に触れる部分の面積を広げることができる。このため、パージエアの温度をより効率的に上昇させ、昇温時間を短縮することができる。   Moreover, the shape of the side surface of the exhaust part 50 of the exhaust heat recovery apparatus 1 is a bellows shape. For this reason, the area of the part which contacts the air (in other words, purge air) in the transmission space 15 in the exhaust part 50 can be expanded. For this reason, the temperature of purge air can be raised more efficiently and the temperature raising time can be shortened.

また、伝達空間１５を流下するパージエアの方向と、排気部５０における排ガスの流下方向とが反対になる。このため、これらの方向が同じである場合に比べ、排ガスからパージエアに熱を伝達する際の効率を向上させることができる。   In addition, the direction of purge air flowing down the transmission space 15 is opposite to the direction of exhaust gas flowing in the exhaust section 50. For this reason, compared with the case where these directions are the same, the efficiency at the time of transferring heat from exhaust gas to purge air can be improved.

［他の実施形態］
（１）本実施形態の排気熱回収装置１では、排気部５０の形状は蛇腹状である。しかし、排気部５０は、凹凸を有さない形状であっても良い。また、排気部５０は、蛇腹状とは異なる形状の凹凸を有していても良い。具体的には、例えば、周回部５１に替えて、排気部５０に、例えば、排ガスの流下方向に沿って配置された流下部を設けても良い。流下部は、周回部と同様にして側方に突出する部位である。流下部は、周回部と同様、１つのリブ状の部位であっても良いし、流下方向に沿って並ぶ複数の突出部であっても良い。[Other Embodiments]
(1) In the exhaust heat recovery apparatus 1 of this embodiment, the shape of the exhaust part 50 is a bellows shape. However, the exhaust part 50 may have a shape having no unevenness. Moreover, the exhaust part 50 may have unevenness | corrugation of a shape different from a bellows shape. Specifically, for example, instead of the circulation unit 51, the exhaust unit 50 may be provided with, for example, a lower part arranged along the flow direction of the exhaust gas. The flow lower part is a part protruding to the side in the same manner as the circulation part. The lower part may be a single rib-like part, like the circuit part, or may be a plurality of protrusions arranged along the flow direction.

（２）本実施形態では、排気熱回収装置１の流出部１３及び流入部１４は、同方向に突出し、平行に並ぶ。しかし、流出部１３及び流入部１４は、様々な方向に突出していても良い。また、本実施形態では、流入部１４は側面部１０の下流側に、流出部１３は側面部１０の上流側に配置されている。しかし、流入部１４は側面部１０の上流側に、流出部１３は側面部１０の下流側に配置されていても良い。   (2) In this embodiment, the outflow part 13 and the inflow part 14 of the exhaust heat recovery device 1 protrude in the same direction and are arranged in parallel. However, the outflow part 13 and the inflow part 14 may protrude in various directions. In the present embodiment, the inflow portion 14 is disposed on the downstream side of the side surface portion 10, and the outflow portion 13 is disposed on the upstream side of the side surface portion 10. However, the inflow portion 14 may be disposed on the upstream side of the side surface portion 10, and the outflow portion 13 may be disposed on the downstream side of the side surface portion 10.

［特許請求の範囲との対応］
上記実施形態の説明で用いた用語と、特許請求の範囲の記載に用いた用語との対応を示す。[Correspondence with Claims]
The correspondence between the terms used in the description of the above embodiment and the terms used in the description of the claims is shown.

側面部１０、上流側蓋部１１、下流側蓋部１２、及び、排気部５０が、伝達部の一例に、排気部５０が管状部材の一例に、側面部１０、上流側蓋部１１、及び、下流側蓋部１２が外殻部材の一例に相当する。また、流出部１３が流出口の一例に、流入部１４が流入口の一例に相当する。   The side part 10, the upstream lid part 11, the downstream lid part 12, and the exhaust part 50 are an example of a transmission part, the exhaust part 50 is an example of a tubular member, the side part 10, the upstream lid part 11, and The downstream lid portion 12 corresponds to an example of an outer shell member. The outflow portion 13 corresponds to an example of an outflow port, and the inflow portion 14 corresponds to an example of an inflow port.

Claims (3)

車両に搭載される排気熱回収装置であって、
前記車両のエンジンから排出された排ガスの熱を、前記車両の外部から流入した空気に伝達させる伝達空間を有する伝達部と、
前記伝達空間に前記空気を流入させるための流入口と、
燃料タンクから流入した燃料蒸気を吸着材に吸着させると共に、前記空気により前記吸着材に吸着した前記燃料蒸気を前記エンジンに流出させるキャニスタに向けて、前記伝達空間から前記空気を流出させる流出口と、を有し、
前記伝達部は、
前記排ガスを前記車両の外部に排出する排気管の側面をなす管状部材と、
前記管状部材を側方から取り囲んだ状態で配置され、前記管状部材との間に前記伝達空間をなす隙間を有した状態で、前記管状部材を側方から覆う外殻部材と、
を有することを特徴とする排気熱回収装置。An exhaust heat recovery device mounted on a vehicle,
A transmission unit having a transmission space for transmitting heat of exhaust gas discharged from the engine of the vehicle to air flowing in from the outside of the vehicle;
An inlet for allowing the air to flow into the transmission space;
An outlet for allowing the fuel vapor flowing in from the fuel tank to be adsorbed by an adsorbent and for causing the air to flow out of the transmission space toward a canister that causes the fuel vapor adsorbed to the adsorbent by the air to flow out to the engine; Have
The transmission unit is
A tubular member forming a side surface of an exhaust pipe for discharging the exhaust gas to the outside of the vehicle;
An outer shell member that is disposed in a state of surrounding the tubular member from the side, and that covers the tubular member from the side, with a gap forming the transmission space between the tubular member;
An exhaust heat recovery apparatus comprising: 請求項１に記載の排気熱回収装置において、
前記管状部材は、当該管状部材の周囲を側方から取り囲んだ状態で配置され、側方に向かって突出する部位であって、内部に、前記排気管を流下する前記排ガスが進入可能な空間を有する複数の周回部を有すること、
前記複数の周回部は、前記管状部材が延びる方向に沿って並んで配置されていること、
を特徴とする排気熱回収装置。The exhaust heat recovery apparatus according to claim 1,
The tubular member is disposed in a state of surrounding the tubular member from the side and protrudes toward the side, and a space into which the exhaust gas flowing down the exhaust pipe can enter is disposed inside. Having a plurality of surrounding portions,
The plurality of circular portions are arranged side by side along a direction in which the tubular member extends;
An exhaust heat recovery device characterized by. 請求項１又は請求項２に記載の排気熱回収装置において、
前記管状部材を流下する前記排ガスの向きを、流下方向とし、
前記流入口は、前記流出口の前記流下方向側に位置すること、
を特徴とする排気熱回収装置。In the exhaust heat recovery device according to claim 1 or 2,
The direction of the exhaust gas flowing down the tubular member is the flowing direction,
The inlet is located on the downstream side of the outlet;
An exhaust heat recovery device characterized by.
JP2017567917A 2016-02-19 2016-02-19 Exhaust heat recovery device Pending JPWO2017141428A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0199962U (en) * 1987-12-23 1989-07-05
JPH05332211A (en) * 1992-06-02 1993-12-14 Honda Motor Co Ltd Canister device
JPH08158959A (en) * 1994-11-30 1996-06-18 Suzuki Motor Corp Warm air cover of engine
JP2005325766A (en) * 2004-05-14 2005-11-24 Nissan Motor Co Ltd Egr cooling device
JP2006329123A (en) * 2005-05-27 2006-12-07 Mahle Filter Systems Japan Corp Air conditioner element for egr gas air conditioner for internal combustion engine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57112070U (en) * 1980-12-27 1982-07-10
JPH0694851B2 (en) * 1988-06-27 1994-11-24 株式会社日立製作所 Evaporative fuel control device
JP2006348754A (en) * 2005-06-13 2006-12-28 Denso Corp Evaporated-fuel treatment device
JP4863511B2 (en) * 2007-10-15 2012-01-25 汎 本間 Combustion improvement device
DE102008027871A1 (en) * 2008-06-11 2009-12-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Fuel vapor storage / recovery system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0199962U (en) * 1987-12-23 1989-07-05
JPH05332211A (en) * 1992-06-02 1993-12-14 Honda Motor Co Ltd Canister device
JPH08158959A (en) * 1994-11-30 1996-06-18 Suzuki Motor Corp Warm air cover of engine
JP2005325766A (en) * 2004-05-14 2005-11-24 Nissan Motor Co Ltd Egr cooling device
JP2006329123A (en) * 2005-05-27 2006-12-07 Mahle Filter Systems Japan Corp Air conditioner element for egr gas air conditioner for internal combustion engine

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