WO2025022651A1 - 車両の排気マニホールド用カバー - Google Patents

車両の排気マニホールド用カバー Download PDF

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Publication number
WO2025022651A1
WO2025022651A1 PCT/JP2023/027585 JP2023027585W WO2025022651A1 WO 2025022651 A1 WO2025022651 A1 WO 2025022651A1 JP 2023027585 W JP2023027585 W JP 2023027585W WO 2025022651 A1 WO2025022651 A1 WO 2025022651A1
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WO
WIPO (PCT)
Prior art keywords
exhaust manifold
cover
exhaust
upper cover
vehicle
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.)
Pending
Application number
PCT/JP2023/027585
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
真也 山口
英幸 安田
克哉 手島
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.)
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Motors Corp
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 Mitsubishi Motors Corp filed Critical Mitsubishi Motors Corp
Priority to PCT/JP2023/027585 priority Critical patent/WO2025022651A1/ja
Priority to JP2025535534A priority patent/JPWO2025022651A1/ja
Publication of WO2025022651A1 publication Critical patent/WO2025022651A1/ja
Anticipated expiration legal-status Critical
Pending 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features having thermal insulation

Definitions

  • the present invention relates to a cover for a vehicle exhaust manifold.
  • the present invention has been developed in consideration of the above-mentioned circumstances, and aims to provide a cover for a vehicle exhaust manifold that improves the durability of the exhaust manifold and is advantageous in reducing radiant heat emitted from the exhaust manifold, thereby protecting surrounding equipment from heat damage.
  • one embodiment of the present invention is a cover for an exhaust manifold for a vehicle having an upper cover that covers the exhaust manifold from above and a lower cover that covers it from below, and is characterized in that the vertical distance between the front end of the upper cover and the front end of the lower cover is formed larger than the vertical distance between the rear end of the upper cover and the rear end of the lower cover.
  • one embodiment of the present invention is characterized in that a front gap is formed between the front end of the upper cover and the front end of the lower cover, and a rear gap is formed between the rear end of the upper cover and the rear end of the lower cover, and the length of the front gap in the vehicle width direction is formed larger than the length of the rear gap in the vehicle width direction.
  • one embodiment of the present invention is characterized in that the exhaust manifold comprises a plurality of pipe bodies attached to a cylinder head of a longitudinally mounted engine, and an exhaust collection section where the plurality of pipe bodies are gathered and attached to an exhaust pipe, has a length along the fore-and-aft direction of the vehicle, and the exhaust collection section is provided at a location closer to the front of the vehicle than the center of the length of the exhaust manifold.
  • one embodiment of the present invention is characterized in that, when the upper cover is viewed in plan and the lower cover is viewed from the bottom, the end of the upper cover away from the cylinder head and the end of the lower cover extend on an inclined curve that approaches the cylinder head as it reaches the rear of the vehicle at a location at the rear of the vehicle of the exhaust collection section, an upper flange that protrudes downwardly is formed extending along the end of the upper cover that extends on the curve, and a lower flange that protrudes upwardly is formed extending along the end of the lower cover that extends on the curve, and a gap is secured between the lower end of the upper flange and the upper end of the lower flange.
  • an exhaust temperature sensor is provided in the exhaust manifold, and the exhaust temperature sensor is provided at a location rearward of the exhaust manifold on the vehicle.
  • the exhaust manifold comprises a cylinder head mounting flange provided at the end of the plurality of pipe bodies, and an exhaust pipe mounting flange provided at the end of the exhaust collection section, the upper cover and the lower cover are each attached to a plurality of mounting portions provided on the exhaust manifold, and at least one mounting portion of the plurality of mounting portions for mounting the upper cover and at least one mounting portion of the plurality of mounting portions for mounting the lower cover are provided on the cylinder head mounting flange or the exhaust pipe mounting flange.
  • the vertical distance between the front end of the upper cover and the front end of the lower cover is greater than the vertical distance between the rear end of the upper cover and the rear end of the lower cover, so that more airflow from the road is taken in between the upper cover and the upper surface of the exhaust manifold and between the lower cover and the lower surface of the exhaust manifold, which is advantageous for efficiently cooling the exhaust manifold with the airflow from the road.
  • This is not only advantageous in terms of improving the durability of the exhaust manifold, but also in terms of protecting surrounding equipment from heat damage by promoting cooling of the exhaust manifold and reducing the radiant heat emitted from the exhaust manifold.
  • the length of the front gap in the vehicle width direction is made larger than the length of the rear gap in the vehicle width direction, it is more advantageous for taking in more of the wind while traveling between the upper cover and the upper surface of the exhaust manifold and between the lower cover and the lower surface of the exhaust manifold, which is more advantageous for improving the durability of the exhaust manifold and for reducing the radiant heat of the exhaust manifold to protect surrounding equipment from heat damage.
  • the exhaust collection portion is located at a position closer to the front of the vehicle than the center of the length of the exhaust manifold, it is advantageous for the exhaust collection portion to be efficiently cooled by the wind from traveling taken in through the front gap, which improves the durability of the exhaust manifold and is more advantageous for protecting surrounding equipment from heat damage.
  • the upper flange and the lower flange shield the radiant heat of the exhaust manifold, which is advantageous in protecting peripheral devices arranged behind the exhaust manifold from heat damage.
  • the traveling wind flows toward the rear of the vehicle through the gap between the lower end of the upper flange and the upper end of the lower flange, it is advantageous in taking in more traveling wind from the gap between the front end of the upper cover and the front end of the lower cover, which enhances the cooling effect of the exhaust manifold by the traveling wind, and is more advantageous in protecting peripheral devices from heat damage by reducing the radiant heat radiated from the exhaust manifold.
  • the exhaust temperature sensor is located at a location rear of the exhaust collection point on the vehicle, where the straight-line wind flowing from the road meets the wind flowing in a curved manner toward the inside of the vehicle width direction, it is advantageous for the exhaust temperature sensor, which is heated by the exhaust, to be efficiently cooled by the meting wind, which is advantageous for increasing the durability of the exhaust temperature sensor.
  • providing at least one mounting portion on the cylinder head mounting flange or the exhaust pipe mounting flange reduces the number of mounting portions located between the exhaust manifold and the upper cover and the number of mounting portions located between the exhaust manifold and the lower cover, smoothing the flow of airflow between the exhaust manifold and the upper cover and the lower cover, enhancing the cooling effect of the exhaust manifold by the airflow while traveling, and being more advantageous in improving the durability of the exhaust manifold, and reducing the radiant heat emitted from the exhaust manifold, thereby being more advantageous in protecting peripheral equipment from heat damage.
  • FIG. 1 is a perspective view showing a state in which an exhaust manifold cover according to an embodiment is attached to an exhaust manifold, as viewed from above and in front of a vehicle.
  • FIG. 2 is a plan view of FIG. 1 .
  • FIG. 2 is a bottom view of FIG. 1 .
  • FIG. 3 is a view taken along the arrow A in FIG. 2 .
  • FIG. 3 is a view taken along the arrow B in FIG. 2 .
  • FIG. 3 is a view taken along the arrow C in FIG. 2 .
  • 3 is a cross-sectional view taken along line D-D in FIG. 2.
  • 1 is a perspective view of an exhaust manifold according to an embodiment, as viewed from above.
  • 1 is a perspective view of an exhaust manifold according to an embodiment, as viewed from below.
  • FIG. 1 is a perspective view of an exhaust manifold according to an embodiment, as viewed from below.
  • an exhaust manifold cover 14 is a cover for an exhaust manifold 12 attached to a cylinder head 10 of a so-called vertically mounted engine 11 in which the rotational axis of the crankshaft is aligned along the fore-and-aft direction of the vehicle.
  • the engine 11 is disposed in a front space (engine compartment) of the vehicle at the front of the passenger compartment.
  • the engine 11 is a four-cylinder engine, and when the engine 11 is disposed in the vehicle, the cylinders are aligned in the front-rear direction of the vehicle.
  • the up-down, front-rear, and left-right (width) directions of the engine 11 are defined based on the directions when the engine 11 is disposed in the vehicle.
  • the exhaust manifold 12 is formed from a metal material such as cast iron, carbon steel, or stainless steel, and as shown in FIG.
  • first, second, third, and fourth pipe bodies 16A, 16B, 16C, and 16D that are lined up from the front to the rear of the vehicle and are respectively connected to exhaust ports of the cylinder head 10, an EGR pipe body 16E that is connected to an EGR port of the cylinder head 10 for returning exhaust gas to the intake flow path, a cylinder head mounting flange 18 provided at the inner ends of these pipe bodies in the vehicle width direction, an exhaust manifold 20 that is connected to the first, second, third, and fourth pipe bodies 16A, 16B, 16C, and 16D and the EGR pipe body 16E and where exhaust from the first, second, third, and fourth pipe bodies 16A, 16B, 16C, and 16D join together, and an exhaust pipe mounting flange 22 that is provided at the outer end of the exhaust manifold 20 in the vehicle width direction and to which an exhaust pipe 24 (see FIG.
  • the first, second, third and fourth pipes 16A, 16B, 16C and 16D are connected to the exhaust ports of the respective cylinders.
  • the EGR pipe 16E is connected to the cylinder head 10 on the rear side of the cylinder located furthest from the rear of the vehicle.
  • the exhaust manifold 12 has a length along the vehicle front-rear direction, and the exhaust collection portion 20 is provided at a position located forward of the center of the length.
  • An exhaust temperature sensor 26, which detects the temperature of the exhaust inside the exhaust manifold 12, is provided in the fourth pipe body 16D located at the rear end of the vehicle. Therefore, the exhaust temperature sensor 26 is provided at a location rearward of the exhaust collection section 20.
  • the exhaust manifold 12 is provided with a plurality of mounting portions for mounting the exhaust manifold cover 14 thereon.
  • the upper mounting portion of the exhaust manifold 12 has a first upper mounting portion 28A provided on the upper surface of the first pipe body 16A, a second upper mounting portion 28B provided on the cylinder head mounting flange 18 at the rear end of the vehicle, and a third upper mounting portion 28C provided on the top of the exhaust pipe mounting flange 22.
  • the lower mounting portion of the exhaust manifold 12 has a first lower mounting portion 30A provided on the underside of the fourth pipe body 16D, and second and third lower mounting portions 30B, 30C provided on the front and rear sides of the exhaust pipe mounting flange 22.
  • the exhaust manifold cover 14 is formed of a steel plate such as an aluminum-plated steel plate, and has an upper cover 32 that covers the exhaust manifold 12 from above, and a lower cover 34 that covers it from below.
  • the upper cover 32 includes an upper cover body 36 located above the exhaust manifold 12, and an upper flange 38 bent downward from the outer and rear ends of the upper cover body 36 in the vehicle width direction.
  • the upper cover body 36 has a shape in a plan view that corresponds to the shape of the exhaust manifold 12 excluding the cylinder head mounting flange 18 and the exhaust pipe mounting flange 22 in a plan view.
  • the upper cover main body 36 comprises an upper cover front end 40 located at the front of the vehicle, an upper cover rear end 42 located at the rear of the vehicle, an upper cover inner portion 44 connecting the inner end of the upper cover front end 40 in the vehicle width direction to the inner end of the upper cover rear end 42 in the vehicle width direction, and an upper cover outer portion 46 connecting the outer end of the upper cover front end 40 in the vehicle width direction to the outer end of the upper cover rear end 42 in the vehicle width direction.
  • the upper cover front end 40 When viewed in a plan view, the upper cover front end 40 has an upper first front end portion 40A located at the vehicle front of the first pipe body 16A, and an upper second front end portion 40B connected to the upper first front end portion 40A, located in front of the exhaust collection section 20, and gradually displaced rearward as it reaches the outside in the vehicle width direction.
  • the upper cover rear end 42 is located rearward of the EGR pipe body 16E.
  • the upper cover inner portion 44 extends linearly in the front-rear direction of the vehicle at a location above the cylinder head mounting flange 18 and spaced outward in the vehicle width direction.
  • the upper cover outer portion 46 includes an upper cover outer front portion 46A, an upper cover outer middle portion 46B, and an upper cover outer rear portion 46C.
  • the upper cover outer front portion 46A extends linearly in the vehicle front-rear direction at a location spaced above the exhaust pipe mounting flange 22 and is positioned furthest outboard in the vehicle width direction.
  • the upper cover outer middle portion 46B is connected to the rear end of the upper cover outer front portion 46A and is located rearward of the exhaust collector 20 in the vehicle.
  • the upper cover outer rear portion 46C is connected to the rear end of the upper cover outer intermediate portion 46B, and gradually approaches the upper cover inner portion 44 as it extends rearward and is connected to the upper cover rear end 42. As shown in FIG. 2, the front end of the upper cover outer front portion 46A is connected to the outer end in the vehicle width direction of the upper second front end portion 40B.
  • the upper cover outer middle portion 46B and the upper cover outer rear portion 46C extend along a curve in a plan view.
  • the upper flange 38 is arranged to protrude downward from the upper cover outer middle portion 46B, the upper cover outer rear portion 46C, and the upper cover rear end 42, and the lower ends of the upper flange 38 arranged on the upper cover outer rear portion 46C and the upper cover rear end 42 are located at the same position in the vertical direction.
  • the upper flanges 38 provided on the upper cover outer middle portion 46B and the upper cover outer rear portion 46C extend along a curve in a plan view as shown in FIG.
  • the upper cover rear end 42 includes an upper flange 38 provided at the upper cover rear end 42 .
  • the lower cover 34 includes a lower cover body 48 located below the exhaust manifold 12, and a lower flange 50 bent upward from the outer and rear ends of the lower cover body 48 in the vehicle width direction.
  • the lower cover body 48 has a shape in a bottom view that corresponds to the shape of the exhaust manifold 12 excluding the cylinder head mounting flange 18 and the exhaust pipe mounting flange 22 in a bottom view.
  • the lower cover main body 48 comprises a lower cover front end 52 located at the front of the vehicle, a lower cover rear end 54 located at the rear of the vehicle, a lower cover inner portion 56 connecting the inner end of the lower cover front end 52 in the vehicle width direction to the inner end of the lower cover rear end 54 in the vehicle width direction, and a lower cover outer portion 58 connecting the outer end of the lower cover front end 52 in the vehicle width direction to the outer end of the lower cover rear end 54 in the vehicle width direction.
  • the lower cover front end 52 When viewed from the bottom, the lower cover front end 52 is composed of a lower first front end portion 52A that extends diagonally in the fore-and-aft direction of the vehicle and exposes downward the portion of the first pipe body 16A near the cylinder head mounting flange 18, and a lower second front end portion 52B that is connected to the outer end of the lower first front end portion 52A in the vehicle width direction and is positioned in front of the exhaust collection portion 20.
  • the lower cover rear end 54 is located rearward of the EGR pipe body 16E when viewed from the bottom.
  • the lower cover inner portion 56 extends linearly in the front-to-rear direction of the vehicle at a location spaced downward and outward in the vehicle width direction from the cylinder head mounting flange 18.
  • the lower cover outer portion 58 includes a lower cover outer front portion 58A, a lower cover outer middle portion 58B, and a lower cover outer rear portion 58C.
  • the lower cover outer front portion 58A extends linearly in the front-rear direction of the vehicle at a location spaced inward in the vehicle width direction from the exhaust pipe mounting flange 22 and is located at the outermost position in the vehicle width direction.
  • the lower cover outer middle portion 58B is connected to the rear end of the lower cover outer front portion 58A and is located rearward of the exhaust collector 20 in the vehicle.
  • the lower cover outer rear portion 58C is connected to the rear end of the lower cover outer intermediate portion 58B, and gradually approaches the lower cover inner portion 56 as it extends rearward and is connected to the lower cover rear end 54.
  • the front end of the lower cover outer front portion 58A is connected to the outer end of the lower second front end portion 52B in the vehicle width direction.
  • the lower cover outer middle portion 58B and the lower cover outer rear portion 58C extend along a curve when viewed from below.
  • the lower flange 50 is provided to protrude upward from the lower cover outer intermediate portion 58B, the lower cover outer rear portion 58C, and the lower cover rear end 54, and the lower flange 50 provided on the lower cover outer intermediate portion 58B and the lower cover outer rear portion 58C extends along a curve when viewed from the bottom, as shown in Figure 3.
  • a notch 60 is provided at the end portion on the inner side in the vehicle width direction of the lower flange 50 provided at the lower cover rear end 54, and the lower cover rear end 54 is configured to include the lower flange 50 provided at this lower cover rear end 54.
  • the upper ends of the lower flanges 50 provided on the lower cover outer rear portion 58C and the lower cover rear end 54 are located at the same location in the vertical direction, and as shown in Figures 4 and 6, a gap S0 is secured between the upper end of the lower flanges 50 provided on the lower cover outer rear portion 58C and the lower cover rear end 54 and the lower end of the upper flanges 38 provided on the upper cover outer rear portion 46C and the upper cover rear end 42.
  • the upper cover 32 is attached via bolts B to attachment portions 28A, 28B, and 28C located on the upper side of the exhaust manifold 12.
  • the lower cover 34 is attached by bolts B to attachment portions 30A, 30B, and 30C located on the upper side of the exhaust manifold 12, as shown in FIGS.
  • an upper air passage P1 extending in the fore-and-aft direction of the vehicle is formed between the upper cover 32 and the upper surface 1202 of the exhaust manifold 12
  • a lower air passage P2 extending in the fore-and-aft direction of the vehicle is formed between the lower cover 34 and the lower surface 1204 of the exhaust manifold 12.
  • the distance d1 between the front end of the upper cover 32 and the front end of the lower cover 34 is larger than the distance d2 between the rear end of the upper cover 32 and the rear end of the lower cover 34, as shown in FIG. 6.
  • a front gap S1 having a vertical distance d1 is formed between the front end of the upper cover 32 and the front end of the lower cover 34
  • a rear gap S2 having a vertical distance d2 is formed between the rear end of the upper cover 32 and the rear end of the lower cover 34.
  • the distance d2 between the rear end of the upper cover 32 and the rear end of the lower cover 34 is the distance between the lower end of the upper flange 38 at the rear end of the upper cover 32 and the rear end of the lower cover body 48 located below the cutout portion 60. Further, the length L1 of the front gap S1 in the vehicle width direction is formed to be larger than the length L2 of the rear gap S2 in the vehicle width direction.
  • the wind flowing from the front of the vehicle to the rear of the vehicle is introduced into the upper air passage P1 and the lower air passage P2 through a front gap S1 having a vertical distance d1 between the front end of the upper cover 32 and the front end of the lower cover 34.
  • a front gap S1 having a vertical distance d1 between the front end of the upper cover 32 and the front end of the lower cover 34.
  • the wind generated by traveling flows in a straight line toward the rear of the vehicle.
  • the curved upper flange 38 provided on the upper cover outer intermediate portion 46B and the curved lower flange 50 provided on the lower cover outer intermediate portion 58B cause the traveling wind to bend inward in the vehicle width direction and circulate toward the rear of the vehicle, as shown by the symbol F2 in FIG. 2. Therefore, at a location rearward of the exhaust collecting section 20, the traveling wind flowing in a straight line and the traveling wind flowing while curving toward the inside in the vehicle width direction join together.
  • the combined airflow passes through the upper air passage P1 and the lower air passage P2 and is discharged from the rear gap S2 having a distance d2.
  • the vertical distance d1 between the front end of the upper cover 32 and the front end of the lower cover 34 is larger than the vertical distance d2 between the rear end of the upper cover 32 and the rear end of the lower cover 34.
  • the radiant heat emitted from the rear end of the exhaust manifold 12 can be efficiently blocked, which is advantageous in protecting peripheral equipment arranged in the vicinity of the rear end of the exhaust manifold 12 from heat damage.
  • the length L1 of the front gap S1 in the vehicle width direction is formed to be larger than the length L2 of the rear gap S2 in the vehicle width direction, which is more advantageous in taking in more traveling wind between the upper cover 32 and the upper surface 1202 of the exhaust manifold 12 and between the lower cover 34 and the lower surface 1204 of the exhaust manifold 12. Therefore, it is more advantageous in improving the durability of the exhaust manifold 12 by increasing the cooling effect of the exhaust manifold 12 by the wind while the vehicle is running, and it is also more advantageous in protecting peripheral equipment from heat damage by reducing the radiant heat emitted from the exhaust manifold 12.
  • the radiant heat emitted from the rear end of the exhaust manifold 12 can be efficiently blocked, which is more advantageous in protecting peripheral equipment arranged in the vicinity of the rear end of the exhaust manifold 12 from heat damage.
  • the exhaust collection section 20, where the exhaust gases collect and become hotter than other sections is located at a location closer to the front of the vehicle than the center of the length of the exhaust manifold 12, which is advantageous in efficiently cooling the exhaust collection section 20 by the wind from the running vehicle taken in through the front gap S1. This is advantageous in terms of improving the durability of the exhaust manifold 12 and protecting peripheral devices from heat damage.
  • the end of the upper cover 32 and the end of the lower cover 34 away from the cylinder head 10 extend on an inclined curve that approaches the cylinder head 10 as it approaches the rear of the vehicle at a point at the rear of the vehicle of the exhaust collection section 20, and an upper flange 38 that protrudes downwardly extends along the end of the upper cover 32 that extends on the curve, and a lower flange 50 that protrudes upwardly extends along the end of the lower cover 34 that extends on the curve, and a gap S0 is secured between the lower end of the upper flange 38 and the upper end of the lower flange 50.
  • the traveling wind flows toward the rear of the vehicle through the gap S0 between the lower end of the upper flange 38 and the upper end of the lower flange 50, which is advantageous for taking in more traveling wind from the front gap S1 into the upper air passage P1 and the lower air passage P2, and the traveling wind flowing through the upper air passage P1 and the lower air passage P2 is smoothly guided toward the rear of the vehicle.
  • the exhaust temperature sensor 26 is located behind the exhaust collector 20 and at a point where the traveling wind flowing in a straight line and the traveling wind flowing in a curved manner toward the inside of the vehicle width direction join together. This is advantageous for efficiently cooling the exhaust temperature sensor 26 heated by the exhaust gas by the joining traveling wind, and is advantageous for increasing the durability of the exhaust temperature sensor 26.
  • the upper cover 32 has three mounting portions 28A, 28B, 28C, of which two mounting portions 28B, 28C are provided on the cylinder head mounting flange 18 and the exhaust pipe mounting flange 22. Further, of the three mounting portions 30A, 30B, and 30C of the lower cover 34, two mounting portions 30B and 30C are provided on the exhaust pipe mounting flange 22.
  • the mounting portions 28B, 28C, 30B, 30C provided on the cylinder head mounting flange 18 and the exhaust pipe mounting flange 22 are located outside the upper air passage P1 and the lower air passage P2 in the width direction of the passages.
  • the exhaust manifold cover 14 is described as a cover for the exhaust manifold 12 attached to the cylinder head 10 of a vertically mounted engine 11, but the exhaust manifold cover of the present invention can also be applied to a cover for an exhaust manifold attached to a horizontally mounted engine in which the rotational axis of the crankshaft is aligned along the vehicle width direction.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
PCT/JP2023/027585 2023-07-27 2023-07-27 車両の排気マニホールド用カバー Pending WO2025022651A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2023/027585 WO2025022651A1 (ja) 2023-07-27 2023-07-27 車両の排気マニホールド用カバー
JP2025535534A JPWO2025022651A1 (https=) 2023-07-27 2023-07-27

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Application Number Priority Date Filing Date Title
PCT/JP2023/027585 WO2025022651A1 (ja) 2023-07-27 2023-07-27 車両の排気マニホールド用カバー

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WO2025022651A1 true WO2025022651A1 (ja) 2025-01-30

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008240589A (ja) * 2007-03-27 2008-10-09 Kokusan Buhin Kogyo Kk エンジンの排気構造
JP2019064316A (ja) * 2017-09-28 2019-04-25 マツダ株式会社 車体下部構造

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008240589A (ja) * 2007-03-27 2008-10-09 Kokusan Buhin Kogyo Kk エンジンの排気構造
JP2019064316A (ja) * 2017-09-28 2019-04-25 マツダ株式会社 車体下部構造

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