CN211819607U - Explosion-proof heat shield of vehicle engine exhaust system - Google Patents
Explosion-proof heat shield of vehicle engine exhaust system Download PDFInfo
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- CN211819607U CN211819607U CN202020180812.XU CN202020180812U CN211819607U CN 211819607 U CN211819607 U CN 211819607U CN 202020180812 U CN202020180812 U CN 202020180812U CN 211819607 U CN211819607 U CN 211819607U
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Abstract
The utility model discloses an automobile-used engine exhaust system's explosion-proof heat exchanger that separates, including exhaust manifold separates heat exchanger and turbo charger separates heat exchanger, exhaust manifold installs in the exhaust manifold separates heat exchanger and with exhaust manifold separates heat exchanger welding structure as an organic whole, and turbo charger independently installs in the turbo charger separates heat exchanger, exhaust manifold separate heat exchanger with turbo charger separates heat exchanger and is double-deck stainless steel casing. The utility model discloses in owing to be double-deck stainless steel construction with automobile-used engine exhaust system's explosion-proof heat shield design, reduced the carminative calorific loss of engine, can improve turbo charger's acting capacity, improve inlet pressure, improve the burning and the emission of engine, obtain better fuel economy. And moreover, the exhaust manifold heat shield and the exhaust manifold are of an integrated fixing structure, and the turbocharger heat shield and the turbocharger are of independent structures, so that the exhaust manifold heat shield and the turbocharger are convenient to install and simple to process, and meet the explosion-proof requirement.
Description
Technical Field
The utility model relates to a technical field of car especially relates to an explosion-proof heat exchanger that separates of automobile-used engine exhaust system.
Background
The engine exhaust system comprises an exhaust manifold and a turbocharger, the temperature of flowing airflow inside the engine exhaust system can reach 700 ℃ in the running process of the engine, so that the temperature of the outer surface of the engine exhaust system exceeds the ignition temperature of a plurality of inflammable matters, the explosion-proof heat insulation cover of the engine exhaust system is installed for preventing inflammable matters such as oil or coal dust and the like from being attached to an exhaust pipe to cause ignition in the running process of a vehicle, preventing high temperature generated by the exhaust pipe from radiating to adjacent parts to cause hidden danger, increasing the safety performance of the engine in working, and mainly achieving the heat insulation and protection functions.
The existing exhaust system mostly adopts a stainless steel or cast iron shell which is directly arranged outside an exhaust manifold and a turbocharger, cooling water is used between the exhaust manifold and the turbocharger and between the exhaust manifold and the shell, and the cooling water directly cools the exhaust manifold and the turbocharger, so that the surface temperature can be reduced to meet the safety requirement, but the enthalpy value of exhaust gas of an engine flowing through a turbine is reduced, the work capacity of the turbine is reduced, and the fuel economy of the engine is influenced.
Therefore, there is a need for an explosion-proof heat shield for an exhaust system of a vehicle engine, which reduces heat loss of exhaust gas of the engine, improves work capacity of a turbocharger, increases intake pressure, improves combustion and emission of the engine, and achieves better fuel economy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides one kind and has reduced the carminative calorific loss of engine, can improve turbo charger's acting capacity, improves inlet pressure, improves the burning and the emission of engine, obtains better fuel economy's automobile-used engine exhaust system's explosion-proof heat exchanger that separates.
The technical scheme of the utility model an explosion-proof heat exchanger that separates of automobile-used engine exhaust system, including exhaust manifold separates heat exchanger and turbo charger and separates the heat exchanger, exhaust manifold installs in the exhaust manifold separates the heat exchanger and with exhaust manifold separates heat exchanger welding structure as an organic whole, and turbo charger independently installs in the turbo charger separates the heat exchanger, exhaust manifold separate the heat exchanger with turbo charger separates the heat exchanger and is double-deck stainless steel casing.
Further, the double-layer stainless steel shell comprises a stainless steel protective outer layer, a cooling liquid middle layer and a stainless steel inner layer, the exhaust manifold heat shield and the turbocharger heat shield, and an air heat insulation layer is reserved between the exhaust manifold and the turbocharger.
Furthermore, the exhaust manifold heat shield comprises an exhaust manifold heat insulation double-layer shell and an exhaust manifold base, a plurality of exhaust manifold exhaust holes and exhaust manifold bolt holes are formed in the exhaust manifold base, the exhaust manifold heat insulation double-layer shell is welded with the exhaust manifold base, the exhaust manifold is installed in a cavity formed by the exhaust manifold heat insulation double-layer shell and the exhaust manifold base, and an exhaust end of the exhaust manifold is welded with the exhaust manifold exhaust holes.
Furthermore, a first cooling liquid outlet and a first cooling liquid inlet are formed in the double-layer heat-insulating shell of the exhaust manifold, the cross section of the double-layer heat-insulating shell of the exhaust manifold is U-shaped, and the first cooling liquid outlet and the first cooling liquid inlet are located on two opposite side faces of the double-layer heat-insulating shell of the exhaust manifold.
Further, exhaust manifold mounting bolt support columns aligned with the exhaust manifold bolt holes are arranged in the cavities and used for bearing the tightening pressure of bolts for mounting the exhaust manifold.
Furthermore, a turbocharger shell fixing bolt is arranged on one side face of the exhaust manifold heat insulation double-layer shell and is used for being connected with the turbocharger heat insulation cover.
Furthermore, the thermal shield of the turbocharger comprises a thermal insulation double-layer shell of the turbocharger, and a turbine outlet hole, a compressor inlet hole, a compressor outlet hole and a lubricating oil pipe hole of the turbocharger which are arranged on the thermal insulation double-layer shell of the turbocharger, wherein the compressor inlet hole is used for a compressor inlet pipeline to penetrate through the thermal insulation double-layer shell of the turbocharger, the compressor outlet hole is used for a compressor outlet pipeline to penetrate through the thermal insulation double-layer shell of the turbocharger, the turbine outlet hole is used for a turbine outlet pipeline to penetrate through the thermal insulation double-layer shell of the turbocharger, and the lubricating oil pipe hole of the turbocharger is used for a lubricating oil pipe of the turbocharger.
Further, the turbocharger heat shield further comprises a turbocharger heat shield fixing plate, wherein the turbocharger heat shield fixing plate is a stainless steel single-layer plate and is used for being connected with the exhaust manifold heat shield.
Furthermore, the turbocharger heat shield also comprises a compressor heat shield wall, the compressor heat shield wall is of a combined structure of a double-layer heat shield shell and a single-layer stainless steel, the compressor heat shield wall is arranged in the double-layer heat shield shell of the turbocharger and is positioned on a connecting shaft of the turbine and the compressor, the single-layer stainless steel is adopted between the turbine and an oil inlet of the turbocharger, and the other parts are double-layer heat shield shells.
Furthermore, a second cooling liquid inlet and a second cooling liquid outlet are formed in the double-layer heat-insulating shell of the turbocharger.
After adopting above-mentioned technical scheme, have following beneficial effect:
the utility model discloses in owing to be double-deck stainless steel construction with automobile-used engine exhaust system's explosion-proof heat shield design, reduced the carminative calorific loss of engine, can improve turbo charger's acting capacity, improve inlet pressure, improve the burning and the emission of engine, obtain better fuel economy. And moreover, the exhaust manifold heat shield and the exhaust manifold are of an integrated fixing structure, and the turbocharger heat shield and the turbocharger are of independent structures, so that the exhaust manifold heat shield and the turbocharger are convenient to install and simple to process, and meet the explosion-proof requirement.
Drawings
The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:
fig. 1 is a perspective view of an explosion proof heat shield in an embodiment of the present invention;
FIG. 2 is a top perspective view of a turbocharger heat shield in an embodiment of the present invention;
FIG. 3 is a bottom perspective view of a turbocharger heat shield in an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a turbocharger heat shield in an embodiment of the present invention;
fig. 5 is a perspective view of a heat insulation wall of a compressor of a heat insulation cover of a turbocharger according to an embodiment of the present invention after being cut;
fig. 6 is a bottom view of a turbocharger heat shield in an embodiment of the present invention;
fig. 7 is a rear perspective view of an exhaust manifold heat shield in an embodiment of the present invention;
fig. 8 is a front perspective view of an exhaust manifold heat shield in an embodiment of the present invention.
Reference symbol comparison table:
turbocharger heat shield 1: the turbocharger heat shield double-layer casing 101, a compressor inlet hole 102, a compressor outlet hole 103, a second cooling liquid outlet 104, a turbocharger heat shield fixing plate 105, a turbine outlet hole 106, a second cooling liquid inlet 107, a turbocharger lubricating oil pipe hole 108, a compressor heat shield wall 109, a turbine connecting shaft 110, a compressor 111, a turbine 112, a turbocharger oil inlet 113, a stainless steel protective outer layer 114, a cooling liquid middle layer 115, a stainless steel inner layer 116, a double-layer heat shield casing 1091 and single-layer stainless steel 1092;
exhaust manifold heat shield 2: the double-layer exhaust manifold heat shield shell 201, an exhaust manifold base 202, a turbocharger shell fixing bolt 203, a first cooling liquid outlet 204, a first cooling liquid inlet 205, an exhaust manifold mounting bolt support column 206, an exhaust manifold exhaust hole 2021 and an exhaust manifold bolt hole 2022;
a turbocharger 3, and an exhaust manifold 4.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
It is easily understood that, according to the technical solution of the present invention, a plurality of structural modes and implementation modes that can be mutually replaced by those of ordinary skill in the art can be achieved without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are only exemplary illustrations of the technical solutions of the present invention, and should not be construed as limiting or restricting the technical solutions of the present invention in its entirety or as a limitation of the present invention.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
In the embodiment, as shown in fig. 1 and 8, the explosion-proof heat shield of the vehicle engine exhaust system comprises an exhaust manifold heat shield 2 and a turbocharger heat shield 1, an exhaust manifold 4 is installed in the exhaust manifold heat shield 2 and welded with the exhaust manifold heat shield 2 into an integral structure, a turbocharger 3 is independently installed in the turbocharger heat shield 1, and the exhaust manifold heat shield 2 and the turbocharger heat shield 1 are both double-layer stainless steel shells.
Specifically, the exhaust manifold heat shield 2 and the turbocharger heat shield 1 are two independent heat shield structures. The turbocharger heat shield 1 is covered outside the turbocharger 3 and used for isolating heat of the turbocharger 3, the exhaust manifold heat shield 2 is integrated with an exhaust manifold 4, the exhaust manifold 4 is located inside the exhaust manifold heat shield 2, and the exhaust manifold heat shield 2 is used for isolating heat of the exhaust manifold 4. The turbocharger heat shield 1 is mounted above the exhaust manifold heat shield 2, and is connected together.
In the embodiment, the explosion-proof heat shield of the exhaust system of the vehicle engine is designed into the double-layer stainless steel structure, so that the heat-proof and explosion-proof effects are achieved, the heat loss of the exhaust of the engine is reduced, the working capacity of the turbocharger can be improved, the air inlet pressure is improved, the combustion and the emission of the engine are improved, and better fuel economy is obtained. And moreover, the exhaust manifold heat shield and the exhaust manifold are of an integrated fixing structure, and the turbocharger heat shield and the turbocharger are of independent structures, so that the exhaust manifold heat shield and the turbocharger are convenient to install and simple to process, and meet the explosion-proof requirement.
Further, as shown in fig. 4, the double-layer stainless steel housing includes an outer protective layer 114 of stainless steel, an intermediate layer 115 of coolant, and an inner layer 116 of stainless steel, the exhaust manifold heat shield 2 and the turbocharger heat shield 1, and an air insulation layer (not shown) is left between the exhaust manifold 4 and the turbocharger 3.
Specifically, the stainless steel protective outer layer 114 is a stainless steel plate with a thickness of 3mm, and has a sufficient protective effect under the condition that potential hazards such as falling objects exist in places such as mines and the like, so that the heat insulation cover is prevented from deforming and being damaged. The stainless steel inner layer 116 is a stainless steel plate with the thickness of 1mm, and the weight of the heat shield is reduced while the strength and the processing requirements are met. The coolant intermediate layer 115 is filled with coolant, which is engine antifreeze or engine circulating water. On the premise that the temperature of the outer surface meets 150 ℃ required by explosion-proof regulations, the formed three-layer structure can prevent the cooling liquid from being in contact with the hot surfaces of the exhaust manifold 4 and the turbocharger 3 to generate corrosion, and the service lives of the exhaust manifold 4 and the turbocharger 3 are prolonged. In addition, the air insulation layer serves to reduce heat loss of the turbine.
Preferably, the double-layer stainless steel shell is designed to ensure that the width between every two joint surfaces is not less than 13mm, the thickness is not less than 5mm, the surface roughness Ra is not more than 6.3 μm, and the double-layer stainless steel shell can bear the pressure of at least 0.8MPa and can not deform.
Further, as shown in fig. 7-8, the exhaust manifold heat shield 2 includes an exhaust manifold heat-insulating double-layer shell 201 and an exhaust manifold base 202, a plurality of exhaust manifold exhaust holes 2021 and exhaust manifold bolt holes 2022 are formed in the exhaust manifold base 202, the exhaust manifold heat-insulating double-layer shell 201 is welded to the exhaust manifold base 202, an exhaust manifold 4 is installed in a cavity formed by the exhaust manifold heat-insulating double-layer shell 201 and the exhaust manifold base 202, and an exhaust end of the exhaust manifold 4 is welded to the exhaust manifold exhaust hole 2021.
Specifically, the cross section of the double-layer exhaust manifold heat-insulating shell 201 is U-shaped, the whole double-layer exhaust manifold heat-insulating shell 201 comprises an outer stainless steel protective layer, a coolant intermediate layer and an inner stainless steel layer, the side surface of an opening of the double-layer exhaust manifold heat-insulating shell 201 is welded with the exhaust manifold base 202, the exhaust manifold base 202 is a flat plate structure made of a stainless steel thick plate with the thickness of 8mm, a plurality of exhaust manifold exhaust holes 2021 and exhaust manifold bolt holes 2022 corresponding to the exhaust manifold 4 are cut on the exhaust manifold base 202 by laser cutting, the exhaust manifold 4 is welded on the exhaust manifold base 202, the flatness of the stainless steel plate is guaranteed by milling or grinding and other processes, and the surface roughness Ra is not more than 6.3 μm. The exhaust manifold exhaust holes 2021 are arranged in a row at intervals in the lateral direction, the exhaust manifold bolt holes 2022 are arranged in two rows at intervals in the lateral direction and are respectively located on the upper and lower sides of the exhaust manifold exhaust hole 2021 in one row, and two exhaust manifold bolt holes 2022 in one vertical row correspond to one exhaust manifold exhaust hole 2021.
Further, as shown in fig. 7 to 8, a first cooling liquid outlet 204 and a first cooling liquid inlet 205 are formed on the exhaust manifold insulating double-layer shell 201, the cross section of the exhaust manifold insulating double-layer shell 201 is U-shaped, and the first cooling liquid outlet 204 and the first cooling liquid inlet 205 are located on two opposite side surfaces of the exhaust manifold insulating double-layer shell 201.
Specifically, the first cooling liquid outlet 204 is located on the upper side of the exhaust manifold heat insulation double-layer shell 201, and the first cooling liquid inlet 205 is located on the lower side of the exhaust manifold heat insulation double-layer shell 201. The first cooling liquid inlet 205 and the first cooling liquid outlet 204 are passages for cooling liquid to enter the exhaust manifold heat-insulating double-layer shell 201 and leave the exhaust manifold heat-insulating double-layer shell 201, the inner diameter is designed according to the pressure of circulating cooling liquid of an engine to ensure sufficient cooling flow, the outer diameter is designed to be as consistent as possible with the required pipe diameter of other cooling pipelines of the engine to ensure good interchangeability of parts, and the outer ring is provided with an anti-slip groove to prevent the pipelines from slipping.
Further, as shown in fig. 8, exhaust manifold mounting bolt support posts 206 are provided in the cavities in alignment with the exhaust manifold bolt holes 2022 for withstanding the tightening pressure of the bolts mounting the exhaust manifold 4.
Specifically, the exhaust manifold mounting bolt support column 206 is a stainless steel pipe sleeve, is welded to the exhaust manifold bolt hole 2022, and is supposed to be coaxial with the exhaust manifold bolt hole 2022, and has an inner diameter the same as the diameter of the exhaust manifold bolt hole 2022, and has a thickness not less than 2.5mm in order to ensure that the exhaust manifold mounting bolt support column does not deform under the tightening pressure for mounting the exhaust manifold bolt.
The exhaust manifold 4 is an exhaust manifold used for an engine, the common material is cast iron, in order to ensure the installation of the exhaust manifold heat shield, the exhaust manifold heat shield is used for cutting a related installation structure for installing an exhaust manifold accessory, and if the corresponding accessory is installed, the corresponding installation structure is welded on the double-layer shell 201 of the exhaust manifold heat shield.
Further, as shown in fig. 7 to 8, a turbocharger housing fixing bolt 203 is provided on one side surface of the exhaust manifold heat insulating double-layer housing 201 for connection with the turbocharger heat insulating cover 1.
The turbocharger heat shield fixing bolt 203 is a fixing bolt for connecting the turbocharger heat shield 2 and the exhaust manifold heat shield 1, penetrates through the turbocharger heat shield fixing plate 105, is fixed through a nut, and is required to ensure that the minimum meshing tooth number is not less than 6 buttons and has corresponding anti-loosening measures.
Further, as shown in fig. 2 to 3, the turbocharger heat shield 1 includes a turbocharger heat insulating double-layer housing 101, and a turbine outlet hole 106, a compressor inlet hole 102, a compressor outlet hole 103 and a turbocharger lubricating oil pipe hole 108 which are formed in the turbocharger heat insulating double-layer housing 101, wherein the compressor inlet hole 102 is used for a compressor inlet pipeline to pass through the turbocharger heat insulating double-layer housing 101, the compressor outlet hole 103 is used for a compressor outlet pipeline to pass through the turbocharger heat insulating double-layer housing 101, the turbine outlet hole 106 is used for a turbine outlet pipeline to pass through the turbocharger heat insulating double-layer housing 101, and the turbocharger lubricating oil pipe hole 108 is used for a turbocharger lubricating oil pipe to pass through the turbocharger heat insulating.
Specifically, the turbocharger heat-insulating double-layer housing 101 also comprises a stainless steel outer protective layer 114, a coolant intermediate layer 115 and a stainless steel inner layer 116, the turbocharger heat-insulating double-layer housing 101 is of a cubic housing structure, the bottom surface of the turbocharger heat-insulating double-layer housing is open, and the bottom surface of the turbocharger heat-insulating double-layer housing is connected with the turbocharger heat-insulating cover 2 through the turbocharger heat-insulating cover fixing plate 105.
The compressor inlet hole 102 and the turbine outlet hole 106 are respectively positioned on the left side surface and the right side surface of the turbocharger heat-insulating double-layer shell 101, and the compressor outlet hole 103 is positioned on the top surface of the turbocharger heat-insulating double-layer shell 101.
The compressor inlet hole 102, the compressor outlet hole 103 and the turbine outlet hole 106 are designed according to the sizes of the interface pipelines of the turbocharger 3, the sealing performance of each pipeline and the three pipelines is guaranteed, and the corresponding pipelines and holes can be directly welded under proper conditions to guarantee sealing.
The position and the size of the lubricating oil pipe hole 108 of the turbocharger are determined according to the position and the size of the oil inlet and return pipe of the turbocharger and the connecting position of the oil inlet and return pipe and the engine body, and the hole and the oil pipe are sealed through a threaded rubber pressing sleeve structure.
Further, as shown in fig. 2 to 3, the turbocharger heat shield 1 further includes a turbocharger heat shield fixing plate 105, and the turbocharger heat shield fixing plate 105 is a stainless single-layer plate for connecting with the exhaust manifold heat shield 2.
Specifically, the turbocharger heat shield fixing plate 105 extends out from the lower edges of the left side and the right side of the turbocharger heat shield double-layer shell 101 in the horizontal direction, and through holes are drilled in the turbocharger heat shield fixing plate 105 according to the positions of the turbocharger shell fixing bolts 203 on the exhaust manifold heat shield 2, so that the thickness of the stainless steel plate is not less than 8mm, and the stainless steel plate is welded on the double-layer shell 101 in a vertical relation.
Further, as shown in fig. 3 and fig. 5-6, the turbocharger heat shield 1 further includes a compressor heat shield wall 109, the compressor heat shield wall 109 is a combined structure of a double-layer heat shield shell 1091 and a single-layer stainless steel 1092, and is installed in the turbocharger heat shield double-layer shell 101 and located on the turbine 112 and the compressor connecting shaft, the single-layer stainless steel 1092 is adopted between the turbine 112 and the turbocharger oil inlet 113, and the rest is the double-layer heat shield shell 1091.
Specifically, the compressor heat insulation wall 109 is vertically installed inside the cavity of the turbocharger heat insulation double-layer shell 101, when the thickness of the single-layer stainless steel 1092 is designed, the single-layer stainless steel is required to be in direct contact with the turbine 112 and the turbocharger oil inlet 113, the double-layer heat insulation shell cannot be in direct contact with the turbine connecting shaft 110 and the shell of the turbine 112, and a mounting space for a turbocharger fastening bolt is reserved at the lower part of the double-layer heat insulation shell. A1 mm gap is reserved between the compressor heat insulation wall 109 and the turbine connecting shaft 110 to ensure that no additional stress is generated during thermal deformation, the diameter of the arc of the compressor heat insulation wall 109 is 74mm, and the diameter of the turbine connecting shaft 110 is 72 mm.
Further, as shown in fig. 2-3, a second cooling liquid inlet 104 and a second cooling liquid outlet 107 are formed on the turbocharger heat-insulating double-layer housing 101.
Specifically, the second cooling liquid outlet 104 is located on the top surface of the first turbocharger heat-insulating double-layer housing 101, and the second cooling liquid inlet 107 is located on the bottom surface of the first turbocharger heat-insulating double-layer housing 101. The sizes of the second cooling liquid inlet 107 and the second cooling liquid outlet 104 should be designed with an inner diameter according to the pressure of the circulating cooling liquid of the engine to ensure sufficient cooling flow, an outer diameter should be designed to be as consistent as possible with the required pipe diameter of the rest cooling pipelines of the engine to ensure good interchangeability of parts, and an anti-skid groove is designed on the outer ring to prevent the pipelines from slipping off.
What has been described above is merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.
Claims (10)
1. The utility model provides an explosion-proof heat exchanger that separates of automobile-used engine exhaust system which characterized in that, separates heat exchanger including exhaust manifold and turbo charger, exhaust manifold installs in the exhaust manifold separates heat exchanger and with exhaust manifold separates heat exchanger welding structure as an organic whole, and turbo charger installs independently in the turbo charger separates heat exchanger, exhaust manifold separate heat exchanger with turbo charger separates heat exchanger and is double-deck stainless steel casing.
2. The explosion proof heat shield of claim 1 wherein said double layer stainless steel housing comprises an outer protective layer of stainless steel, an intermediate layer of coolant, and an inner layer of stainless steel, said exhaust manifold heat shield and said turbocharger heat shield leaving an air insulation layer between said exhaust manifold and said turbocharger.
3. The explosion-proof heat shield according to claim 1, wherein the exhaust manifold heat shield comprises an exhaust manifold heat-insulating double-layer shell and an exhaust manifold base, the exhaust manifold base is provided with a plurality of exhaust manifold exhaust holes and exhaust manifold bolt holes, the exhaust manifold heat-insulating double-layer shell is welded with the exhaust manifold base, the exhaust manifold is installed in a cavity formed by the exhaust manifold heat-insulating double-layer shell and the exhaust manifold base, and an exhaust end of the exhaust manifold is welded with the exhaust manifold exhaust holes.
4. The explosion-proof heat shield according to claim 3, wherein the double-layer exhaust manifold heat shield shell is provided with a first cooling liquid outlet and a first cooling liquid inlet, the cross section of the double-layer exhaust manifold heat shield shell is U-shaped, and the first cooling liquid outlet and the first cooling liquid inlet are located on two opposite side surfaces of the double-layer exhaust manifold heat shield shell.
5. The explosion proof heat shield of claim 3 wherein exhaust manifold mounting bolt support posts are provided in said cavity in alignment with said exhaust manifold bolt holes for withstanding the tightening pressure of bolts mounting said exhaust manifold.
6. The explosion proof heat shield of claim 3 wherein a turbocharger housing attachment bolt is provided on one side of the exhaust manifold heat shield double shell for connection with the turbocharger heat shield.
7. The explosion-proof heat shield of any one of claims 1 to 6, wherein the turbocharger heat shield comprises a turbocharger heat-insulating double-layer housing, and a turbine outlet hole, a compressor inlet hole, a compressor outlet hole and a turbocharger lubricating oil pipe hole which are formed in the turbocharger heat-insulating double-layer housing, the compressor inlet hole is used for a compressor inlet pipeline to penetrate through the turbocharger heat-insulating double-layer housing, the compressor outlet hole is used for a compressor outlet pipeline to penetrate through the turbocharger heat-insulating double-layer housing, the turbine outlet hole is used for a turbine outlet pipeline to penetrate through the turbocharger heat-insulating double-layer housing, and the turbocharger lubricating oil pipe hole is used for a turbocharger lubricating oil pipe to penetrate through the turbocharger heat-insulating double-layer housing.
8. The explosion proof heat shield of claim 7, further comprising a turbocharger heat shield fixing plate, the turbocharger heat shield fixing plate being a stainless steel single layer plate for connection with the exhaust manifold heat shield.
9. The explosion-proof heat shield of claim 7, wherein the turbocharger heat shield further comprises a compressor heat shield wall, the compressor heat shield wall is a combined structure of a double-layer heat shield shell and a single-layer stainless steel, the compressor heat shield wall is installed in the turbocharger heat shield double-layer shell and is positioned on the connecting shaft of the turbine and the compressor, the single-layer stainless steel is adopted between the turbine and the oil inlet of the turbocharger, and the other parts are double-layer heat shield shells.
10. The explosion-proof heat shield of claim 7, wherein the turbocharger heat-insulating double-layer shell is provided with a second cooling liquid inlet and a second cooling liquid outlet.
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| CN202020180812.XU CN211819607U (en) | 2020-02-18 | 2020-02-18 | Explosion-proof heat shield of vehicle engine exhaust system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555004A (en) * | 2020-12-03 | 2021-03-26 | 西安科美动力科技有限公司 | Integral engine exhaust pipe heat insulation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555004A (en) * | 2020-12-03 | 2021-03-26 | 西安科美动力科技有限公司 | Integral engine exhaust pipe heat insulation device |
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