JP2006083707A - Thermoelectric element mounting structure of engine - Google Patents

Thermoelectric element mounting structure of engine Download PDF

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Publication number
JP2006083707A
JP2006083707A JP2004266328A JP2004266328A JP2006083707A JP 2006083707 A JP2006083707 A JP 2006083707A JP 2004266328 A JP2004266328 A JP 2004266328A JP 2004266328 A JP2004266328 A JP 2004266328A JP 2006083707 A JP2006083707 A JP 2006083707A
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thermoelectric element
engine
outlet end
inlet flange
mounting structure
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JP4449671B2 (en
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Kentaro Shii
健太郎 椎
Masahiko Kubo
雅彦 久保
Tomoyuki Odawara
友之 小俵
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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    • 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
    • Y02T10/12—Improving ICE efficiencies

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently generate power using a thermoelectric element in an exhaust system part of an engine. <P>SOLUTION: A recessed part 10 is formed in an end face part 3 of an outlet of an exhaust port 2 in a cylinder head 1 of the engine, and a recessed part 11 is formed in an inlet flange part 5 of an exhaust manifold 4. Both surfaces of the respective thermoelectric elements 13 passed through through-holes 12 of a gasket 6 between the outlet end face part 3 and the inlet flange part 5 are respectively fitted in the recessed part 10 and the recessed part 11, and respectively pressed to the outlet end face part 3 and the inlet flange part 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、エンジンの排気系統部分に熱電素子を取り付けるための構造に関する。   The present invention relates to a structure for attaching a thermoelectric element to an exhaust system portion of an engine.

エンジンにおける排気管の上流部と下流部とにそれぞれ熱電素子を装着して、その熱電素子により発電を行わせる技術が、下記特許文献１で従来から知られている。   A technique in which thermoelectric elements are respectively attached to an upstream portion and a downstream portion of an exhaust pipe in an engine and power is generated by the thermoelectric elements is conventionally known in Patent Document 1 below.

特開平１１−２５７０６４号公報JP-A-11-257064

しかしながら、この場合には、エンジンの排気ポートから大きく離れた排気管表面に沿って高温側の熱電素子が装着されていて、この熱電素子は排気管から必ずしも効率よく受熱することができないため、熱電素子による発電効率を高めることが難しいという問題があった。   However, in this case, a thermoelectric element on the high temperature side is mounted along the exhaust pipe surface far away from the exhaust port of the engine, and this thermoelectric element cannot always receive heat efficiently from the exhaust pipe. There was a problem that it was difficult to increase the power generation efficiency of the element.

本発明は、エンジンの排気系統部分に熱電素子を取り付けて発電を行わせる場合に、その発電効率を容易に高めることができるようにしようとするものである。   An object of the present invention is to easily increase the power generation efficiency when a thermoelectric element is attached to an exhaust system portion of an engine to generate power.

このため、本発明にかかるエンジンの熱電素子取付け構造は、両面の温度差により発電する熱電素子の一方の面がエンジン本体における排気ポートの出口端面部に当接し、上記熱電素子の他方の面が上記排気ポートにそれぞれ排気路が連通する排気マニホールドの入口フランジ部に当接して、上記熱電素子が上記出口端面部及び上記フランジ部間に挟持されている。   For this reason, in the thermoelectric element mounting structure of the engine according to the present invention, one surface of the thermoelectric element that generates power due to the temperature difference between the two surfaces comes into contact with the outlet end surface portion of the exhaust port in the engine body, and the other surface of the thermoelectric element is The thermoelectric element is sandwiched between the outlet end face portion and the flange portion in contact with the inlet flange portion of the exhaust manifold that communicates with the exhaust port.

すなわち、エンジン本体は一般にエンジン冷却水により常時冷却されているのに対し、排気マニホールドは高温の排気により常時加熱されて高温状態が保持されているので、比較的低温である排気ポートの出口端面部と比較的高温である排気マニホールドの入口フランジ部との間に挟持された熱電素子は、出口端面部と入口フランジ部との間の温度差により安定的に効率よく発電することが可能となる。   That is, while the engine body is generally constantly cooled by engine cooling water, the exhaust manifold is constantly heated by the high-temperature exhaust gas and kept at a high temperature, so the outlet end face of the exhaust port that is relatively cold And the thermoelectric element sandwiched between the inlet flange portion of the exhaust manifold having a relatively high temperature can generate power stably and efficiently due to the temperature difference between the outlet end surface portion and the inlet flange portion.

以下、図面に示す本発明の各実施例について、同等部分にはそれぞれ同一符号を付けて説明する。
図１及び図２において、車載４シリンダエンジンのシリンダヘッド１に各排気ポート２の出口端面部３が形成され、排気マニホールド４の入口フランジ部５がガスケット６を挟んで出口端面部３に図示しないボルトで取り付けられることにより、各排気ポート２と排気マニホールド４の各排気路７とが、それぞれガスケット６に形成された通孔８を経て連通している。 In the following, each embodiment of the present invention shown in the drawings will be described with the same reference numerals given to the equivalent parts.
1 and 2, an outlet end surface portion 3 of each exhaust port 2 is formed in a cylinder head 1 of an on-vehicle four-cylinder engine, and an inlet flange portion 5 of the exhaust manifold 4 is not shown on the outlet end surface portion 3 with a gasket 6 interposed therebetween. By being attached with bolts, each exhaust port 2 and each exhaust passage 7 of the exhaust manifold 4 communicate with each other through a through hole 8 formed in the gasket 6.

また、出口端面部３の排気マニホールド４側表面には、各排気ポート２間にそれぞれ略四角形の浅い凹部１０が形成されていると共に、入口フランジ部５のシリンダヘッド１側表面には、各排気路４間にそれぞれ略四角形の浅い凹部１１が形成され、さらに、ガスケット６の各通孔７間にそれぞれ略四角形の貫通孔１２が設けられている。   Further, a shallow concave portion 10 having a substantially rectangular shape is formed between the exhaust ports 2 on the exhaust manifold 4 side surface of the outlet end surface portion 3, and each exhaust gas is formed on the cylinder head 1 side surface of the inlet flange portion 5. A substantially rectangular shallow recess 11 is formed between the passages 4, and a substantially rectangular through hole 12 is provided between each through hole 7 of the gasket 6.

各熱電素子１３は、それぞれガスケット６の貫通孔１２を挿通してガスケット６により支持され、一方の面１４が凹部１０内に嵌め込まれていると共に、他方の面１５が凹部１１内に嵌め込まれていて、入口フランジ部５がガスケット６を挟んで出口端面部３に取り付けられる際、一方の面１４が出口端面部３に押し付けられていると同時に、他方の面１５が入口フランジ部５に押し付けられている。   Each thermoelectric element 13 is inserted into the through hole 12 of the gasket 6 and supported by the gasket 6, and one surface 14 is fitted in the recess 10 and the other surface 15 is fitted in the recess 11. Thus, when the inlet flange portion 5 is attached to the outlet end surface portion 3 with the gasket 6 interposed therebetween, one surface 14 is pressed against the outlet end surface portion 3 and at the same time, the other surface 15 is pressed against the inlet flange portion 5. ing.

一方、シリンダヘッド１は通常エンジン冷却水により全体的に冷却されているが、上記装置では、とくに、出口端面部３の凹部１０に近接してシリンダヘッド１に冷却水路２０が形成されており、凹部１０の近傍は冷却水路２０内を流れるエンジン冷却水により常時冷却されて、比較的低温に保持されているが、排気マニホールド４は高温の排気により常時加熱されて、全体が比較的高温に保持されている。
なお、熱電素子１３に接続される図示しない導線は、入口フランジ部５に形成された適宜の孔部を通って外部に導かれている。 On the other hand, the cylinder head 1 is usually cooled as a whole by engine cooling water. In the above-described apparatus, a cooling water passage 20 is formed in the cylinder head 1 particularly in the vicinity of the recess 10 of the outlet end face portion 3. The vicinity of the recess 10 is always cooled by the engine coolant flowing in the cooling water passage 20 and is kept at a relatively low temperature, but the exhaust manifold 4 is always heated by the high-temperature exhaust gas and the whole is kept at a relatively high temperature. Has been.
A conducting wire (not shown) connected to the thermoelectric element 13 is guided to the outside through an appropriate hole formed in the inlet flange portion 5.

上記装置において、各熱電素子１３は、一方の面１４が比較的低温である出口端面部３に当接していると共に、他方の面１５が比較的高温である入口フランジ部５に当接し、しかも、出口端面部３に対して入口フランジ部５がボルト止めされて、各熱電素子１３に適度の押圧力を容易に作用させることができるため、各熱電素子１３と出口端面部３及び入口フランジ部５との熱伝達が確実なものとなって、各熱電素子１３は出口端面部３及び入口フランジ部５間に生じた大きな温度差により安定的に効率よく発電することが可能となり、従って、排気マニホールド４内における排気中の熱エネルギを効果的に回収して、車載バッテリ等の充電を容易に支援することができる等の大きな長所がある。
なお、入口フランジ部５をボルト止めする際、ガスケット６に対して規定の締付け圧となるようにすれば、熱電素子１３の発電時には、熱電素子１３自体の熱膨張によっても押圧力が発生するため、通常の締付け圧で十分な熱伝達が得られることとなる。 In the above-described apparatus, each thermoelectric element 13 is in contact with the outlet end surface portion 3 whose one surface 14 is at a relatively low temperature, and is in contact with the inlet flange portion 5 whose other surface 15 is at a relatively high temperature. Since the inlet flange portion 5 is bolted to the outlet end surface portion 3 and an appropriate pressing force can be easily applied to each thermoelectric element 13, each thermoelectric element 13, the outlet end surface portion 3 and the inlet flange portion. As a result, the thermoelectric element 13 can generate power stably and efficiently due to a large temperature difference generated between the outlet end face portion 3 and the inlet flange portion 5. There is a great advantage that the heat energy in the exhaust gas in the manifold 4 can be effectively recovered to easily support the charging of the vehicle-mounted battery or the like.
Note that, when the inlet flange portion 5 is bolted, if a predetermined tightening pressure is applied to the gasket 6, a pressing force is generated due to thermal expansion of the thermoelectric element 13 itself when the thermoelectric element 13 generates power. Sufficient heat transfer can be obtained with a normal tightening pressure.

また、各熱電素子１３はそれぞれガスケット６の貫通孔１２を挿通してガスケット６により支持され、かつ、一方の面１４が凹部１０内に嵌め込まれていると共に、他方の面１５が凹部１１内に嵌め込まれていて、各熱電素子１３を確実に支持することができる一方、各熱電素子１３を保持するための特別な構造体を必要としないので、各熱電素子１３の取付けに要するコストを容易に軽減させることが可能となる。   Each thermoelectric element 13 is inserted through the through hole 12 of the gasket 6 and supported by the gasket 6, and one surface 14 is fitted in the recess 10, and the other surface 15 is inserted in the recess 11. The thermoelectric elements 13 can be securely supported while being fitted, and a special structure for holding the thermoelectric elements 13 is not required, so that the cost required for mounting the thermoelectric elements 13 can be easily achieved. It becomes possible to reduce.

しかも、各熱電素子１３をガスケット６により支持させるようにすると、ガスケット６は一般に断熱性を有しているため、各熱電素子１３の両面１４、１５間における比較的大きな温度差を容易に維持して、各熱電素子１３の発電性能を高く保持させることが可能となる。   Moreover, if each thermoelectric element 13 is supported by the gasket 6, the gasket 6 generally has a heat insulating property, so that a relatively large temperature difference between both surfaces 14 and 15 of each thermoelectric element 13 can be easily maintained. Thus, the power generation performance of each thermoelectric element 13 can be kept high.

図３に示された実施例では、排気マニホールド４における入口フランジ部５のシリンダヘッド１側表面に、各排気路７間でそれぞれ凹部３０が形成され、凹部３０内に嵌め込まれた各熱電素子１３が上記シリンダヘッド１側表面からわずかに突出して、シリンダヘッド１における出口端面部３の排気マニホールド４側表面に直接当接し、出口端面部３の排気マニホールド４側表面と入口フランジ部５のシリンダヘッド１側表面と間に液状パッキン３１が塗布されて硬化しており、上記実施例と同様な作用効果を発揮することができる。   In the embodiment shown in FIG. 3, recesses 30 are formed between the exhaust passages 7 on the cylinder head 1 side surface of the inlet flange portion 5 in the exhaust manifold 4, and each thermoelectric element 13 fitted in the recess 30. Slightly protrudes from the cylinder head 1 side surface and directly contacts the exhaust manifold 4 side surface of the outlet end surface portion 3 of the cylinder head 1, and the exhaust manifold 4 side surface of the outlet end surface portion 3 and the cylinder head of the inlet flange portion 5. The liquid packing 31 is applied between the one side surface and hardened, and the same effects as the above-described embodiment can be exhibited.

また、出口端面部３や入口フランジ部５は一般的に平面であるため、熱電素子１３を嵌め込む凹部１０、１１、３０を形成しやすく、しかも、熱電素子１３を反らせる等の特別な加工をする必要がなく簡単に取り付けることができる。   Moreover, since the exit end face part 3 and the inlet flange part 5 are generally flat, it is easy to form the recesses 10, 11 and 30 into which the thermoelectric element 13 is fitted, and special processing such as warping the thermoelectric element 13 is performed. It can be easily installed without having to.

さらに、熱電素子自体にガスケットとしての機能をもたせれば、出口端面部３及び入口フランジ部５のほぼ全面にわたって熱電素子を配置することが可能となり、一層多くの発電機能を得ることができる。   Furthermore, if the thermoelectric element itself has a function as a gasket, the thermoelectric element can be disposed over almost the entire surface of the outlet end face portion 3 and the inlet flange portion 5, and more power generation functions can be obtained.

なお、上記各実施例において、相互に連結される出口端面部３及び入口フランジ部５を、エンジン本体（Ｖ型エンジンの場合は車両後方側バンク）の車両後方側、すなわち、エンジン本体に対してエンジン冷却風の下流側の位置に設けるようにすれば、エンジン冷却風による排気マニホールド４への影響が緩和されて入口フランジ部５が一層高温となりやすく、熱電素子１３による発電能力を一段と向上させることができるのはいうまでもない。   In each of the above-described embodiments, the outlet end face portion 3 and the inlet flange portion 5 that are connected to each other are connected to the vehicle rear side of the engine body (the vehicle rear side bank in the case of a V-type engine), that is, to the engine body. If it is provided at a position downstream of the engine cooling air, the influence of the engine cooling air on the exhaust manifold 4 is mitigated, the inlet flange portion 5 is likely to become higher temperature, and the power generation capability by the thermoelectric element 13 is further improved. Needless to say, you can.

本発明の実施例における概略斜視分解図。The schematic perspective exploded view in the Example of this invention. 図１のII−II縦断面拡大図。II-II longitudinal cross-sectional enlarged view of FIG. 本発明の他の実施例における図２相当の縦断面図。The longitudinal cross-sectional view equivalent to FIG. 2 in the other Example of this invention.

符号の説明Explanation of symbols

１ シリンダヘッド
３ 出口端面部
４ 排気マニホールド
５ 入口フランジ部
６ ガスケット
１０、１１ 凹部
１２ 貫通孔
１３ 熱電素子
２０ 冷却水路
３０ 凹部
３１ 液状パッキン DESCRIPTION OF SYMBOLS 1 Cylinder head 3 Outlet end surface part 4 Exhaust manifold 5 Inlet flange part 6 Gasket 10,11 Concave part 12 Through-hole 13 Thermoelectric element 20 Cooling water channel 30 Concave part 31 Liquid packing

Claims (4)

両面の温度差により発電する熱電素子の一方の面がエンジン本体における排気ポートの出口端面部に当接し、上記熱電素子の他方の面が上記出口端面部に取り付けられて上記排気ポートにそれぞれ排気路が連通する排気マニホールドの入口フランジ部に当接して、上記熱電素子が上記出口端面部及び上記入口フランジ部間に挟持されたエンジンの熱電素子取付け構造。 One surface of a thermoelectric element that generates electricity due to a temperature difference between the two surfaces is in contact with the outlet end surface portion of the exhaust port in the engine body, and the other surface of the thermoelectric element is attached to the outlet end surface portion and is connected to the exhaust port. An engine thermoelectric element mounting structure in which the thermoelectric element is sandwiched between the outlet end face part and the inlet flange part in contact with the inlet flange part of the exhaust manifold communicating with the exhaust manifold. 請求項１において、上記エンジン本体には、上記出口端面部に近接して冷却水路が形成されたエンジンの熱電素子取付け構造。 The engine thermoelectric element mounting structure according to claim 1, wherein a cooling water channel is formed in the engine main body in the vicinity of the outlet end surface portion. 請求項１または請求項２において、上記熱電素子が上記出口端面部及び上記入口フランジ部間に配置されたガスケットにより支持された熱電素子取付け構造。 3. The thermoelectric element mounting structure according to claim 1, wherein the thermoelectric element is supported by a gasket disposed between the outlet end face part and the inlet flange part. 請求項１〜請求項３のいずれかにおいて、上記出口端面部及び上記入口フランジ部が上記エンジン本体に対してエンジン冷却風の下流側の位置に設けられた熱電素子取付け構造。 4. The thermoelectric element mounting structure according to claim 1, wherein the outlet end face portion and the inlet flange portion are provided at a position downstream of the engine cooling air with respect to the engine body.
JP2004266328A 2004-09-14 2004-09-14 Engine thermoelectric element mounting structure Expired - Fee Related JP4449671B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015108442A (en) * 2013-10-22 2015-06-11 株式会社テイエルブイ Trap
JP2015108440A (en) * 2013-10-22 2015-06-11 株式会社テイエルブイ Trap
US9574517B2 (en) 2013-11-12 2017-02-21 Hyundai America Technical Center, Inc Thermoelectric generator insert for engine waste heat recovery
CN113756924A (en) * 2021-09-15 2021-12-07 移动源后处理技术(河南)研究院有限公司 Basalt fiber-based integrated heat insulation device for automobile exhaust manifold
DE102015207446B4 (en) 2014-09-01 2022-03-24 Hyundai Motor Company Thermoelectric generating device for a vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015108442A (en) * 2013-10-22 2015-06-11 株式会社テイエルブイ Trap
JP2015108440A (en) * 2013-10-22 2015-06-11 株式会社テイエルブイ Trap
US9574517B2 (en) 2013-11-12 2017-02-21 Hyundai America Technical Center, Inc Thermoelectric generator insert for engine waste heat recovery
DE102015207446B4 (en) 2014-09-01 2022-03-24 Hyundai Motor Company Thermoelectric generating device for a vehicle
CN113756924A (en) * 2021-09-15 2021-12-07 移动源后处理技术(河南)研究院有限公司 Basalt fiber-based integrated heat insulation device for automobile exhaust manifold
CN113756924B (en) * 2021-09-15 2024-01-12 南昌同岩新材科技有限公司 Basalt fiber-based integrated heat insulation device for automobile exhaust manifold

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