CN217462325U - Exhaust manifold for engine - Google Patents

Abstract

The utility model relates to an exhaust manifold for an engine, which comprises a first pipe body, a second pipe body and an air guide branch pipe, the air guide vortex plate comprises an air guide vortex plate body, a first end cover, a second end cover, a plurality of air inlets are formed in the same side of the outer wall of the first pipe body, the air inlets are sequentially arranged at intervals along the length direction of the first pipe body, the second pipe body is arranged in the first pipe body along the length direction of the first pipe body, the air guide branch pipes are arranged in a plurality of numbers, one ends of the air guide branch pipes are in one-to-one correspondence with the air inlets and are mutually communicated, the other ends of the air guide branch pipes are communicated with an inner cavity of the second pipe body, the first end cover and the second end cover are fixed at two ends of the first pipe body, an air outlet communicated with one end of the second pipe body is formed in the first end cover, the air guide vortex plate is arranged in the second pipe body, the air guide vortex plate is divided into a plurality of independent areas along the air guide branch pipes, and outlets of the independent areas are communicated with the air outlet. The utility model aims at providing a simple structure, rationally distributed just enables the exhaust and reduces the exhaust manifold for engine that disturbs.

Description

Exhaust manifold for engine

Technical Field

The utility model relates to an engine exhaust technical field, in particular to exhaust manifold for engine.

Background

The exhaust manifold is connected to the engine cylinders and has a branched conduit for collecting exhaust gases from the cylinders and directing them to an exhaust manifold. The requirements for the exhaust process are mainly to reduce the exhaust resistance as much as possible and avoid mutual interference among cylinders. However, the exhaust manifolds in the prior art are provided with a plurality of air inlets, so that the tail gas enters from different air inlets to avoid mutual interference between tail gas of cylinders, but the gas still has certain interference in the main pipe after entering, and then different air inlets and exhaust pipelines thereof are arranged to increase the space for arrangement, which is not beneficial to the utilization of the space around the engine.

In view of the above problems, it is desirable to provide an exhaust manifold for an engine, which has a simple structure and a reasonable layout, and can reduce interference of exhaust.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving prior art's technical problem, provide one kind.

The utility model provides a technical scheme does: an exhaust manifold for an engine comprises a first pipe body, a second pipe body, air guide branch pipes, air guide vortex plates, a first end cover and a second end cover, wherein a plurality of air inlets are formed in the same side of the outer wall of the first pipe body, the air inlets are sequentially arranged along the length direction of the first pipe body at intervals, the second pipe body is arranged in the first pipe body along the length direction of the first pipe body, the air guide branch pipes are arranged in a plurality, one end of each air guide branch pipe corresponds to each other and is communicated with the air inlets, the other end of each air guide branch pipe is communicated with an inner cavity of the second pipe body, the first end cover and the second end cover are fixed at two ends of the first pipe body, an air outlet communicated with one end of the second pipe body is formed in the first end cover, the air guide vortex plates are arranged in the second pipe body, the air guide vortex plates divide the second pipe body into a plurality of independent areas along the air guide branch pipes, the outlets of a plurality of the independent areas all lead to an exhaust port.

Through adopting above-mentioned technical scheme, a plurality of air inlets have been seted up along the length direction of first body to the outer wall of first body, the second body sets up in first body along the length direction of first body, air guide branch pipe one end and air inlet one-to-one and intercommunication each other, the inner chamber intercommunication of the other end and second body, first end cover and second end cover are fixed in the both ends of first body, set up the gas vent with second body one end intercommunication on the first end cover, place in the air guide vortex plate in the second body and with the second body in separate into a plurality of independent areas, independent area's export all accesss to the gas vent. When the engine exhausts, gas is exhausted into the gas inlet on the outer wall of the first pipe body, enters the inner cavity of the second pipe body through the gas guide branch pipe, and is separated by the gas guide vortex plate along the gas guide branch pipe and exhausted from the gas outlet formed in the first end cover. The utility model discloses simple structure, occupation space is little, separates engine exhaust's tail gas in exhaust manifold through the air guide vortex plate that sets up in the second body, avoids the exhaust disturbance, keeps engine exhaust energy, improves tail gas energy utilization ratio, can strengthen exhaust gas turbocharger work efficiency, reduces fuel consumption.

As a further setting of the utility model, the surface of second body surrounds with the internal surface of first body and forms the cylindric guiding gutter, the water inlet has been seted up to first body below, the water inlet communicates with the one end that the cylindric guiding gutter is close to the second end cover, set up the outlet with cylindric guiding gutter intercommunication on the first end cover.

Through adopting above-mentioned technical scheme, engine cylinder combustion gas temperature is higher, and high-temperature gas easily causes the harm to exhaust manifold, lets in the cooling water in water inlet department, and the cooling water gets into cylindric guiding gutter from the water inlet, because cylindric guiding gutter encircles the second body and arranges for the heat of tail gas in the second body can be taken away fast to the cooling water, has reduced the temperature of high-temperature gas to exhaust manifold surface.

As the utility model discloses a further setting, the center at first end cover is seted up to the gas vent.

As a further setting of the utility model, the outlet sets up to a plurality ofly, the outlet evenly arranges along cylindric guiding gutter circumference.

Through adopting above-mentioned technical scheme, set up the gas vent in the center of first end cover and be favorable to gaseous discharge, the outlet that evenly arranges along cylindric guiding gutter circumference can discharge the cooling water fast, and the local velocity of flow of having avoided cylindric guiding gutter is too slow to lead to the unable quick discharge of local heat.

As a further configuration of the present invention, the air inlets are set to six, and the air guide vortex plate divides the second tube into two independent regions beside the third air inlet.

Through adopting above-mentioned technical scheme, the air inlet is established to six, is applicable in six jar engines, and the air guide vortex board is by the third air inlet with the second body in the partition two independent areas, and tail gas leads to the gas vent discharge in the corresponding area respectively.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model provides a pair of exhaust manifold for engine, when the engine exhausts, the air inlet of first body outer wall is gone into to gas, gets into the inner chamber of second body through the air guide branch pipe, and the air guide whirl board is separated the gas in the second body along the air guide branch pipe to the gas vent that sets up is discharged from first end cover. The utility model discloses simple structure, occupation space is little, separates engine exhaust's tail gas in exhaust manifold through the air guide vortex plate that sets up in the second body, avoids the exhaust disturbance, keeps engine exhaust energy, improves tail gas energy utilization ratio, can strengthen exhaust gas turbocharger work efficiency, reduces fuel consumption.

2. The utility model provides a pair of exhaust manifold for engine, engine cylinder combustion gas temperature is higher, and high-temperature gas easily causes the harm to exhaust manifold, lets in the cooling water in water inlet department, and the cooling water gets into the cylindric guiding gutter from the water inlet, because the cylindric guiding gutter is arranged around the second body for the heat of tail gas in the second body is taken away fast to cooling water energy, has reduced the temperature of high-temperature gas to the exhaust manifold surface.

3. The utility model provides a pair of exhaust manifold for engine, the gas vent of seting up in the center of first end cover is favorable to gaseous discharge, and the outlet of evenly arranging along cylindric guiding gutter circumference can discharge the cooling water fast, and the local velocity of flow of having avoided cylindric guiding gutter is too slow to lead to the unable quick discharge of local heat.

Drawings

FIG. 1 is a schematic cross-sectional view of an exhaust manifold for an engine according to the present invention;

fig. 2 is a schematic perspective view of the present invention.

In the attached drawings, 1, a first pipe body; 11. an air inlet; 12. a water inlet; 2. a second tube body; 3. an air guide branch pipe; 4. an air guide vortex plate; 5. a first end cap; 51. an exhaust port; 52. a water outlet; 6. a second end cap; 7. a cylindrical diversion trench.

Detailed Description

The invention is further described with reference to the following drawings and specific examples.

Referring to fig. 1-2, the present invention provides an exhaust manifold for an engine, including a first pipe 1, a second pipe 2, an air guide branch pipe 3, an air guide vortex plate 4, a first end cap 5, and a second end cap 6, wherein a plurality of air inlets 11 are disposed on the same side of the outer wall of the first pipe 1, the air inlets 11 are sequentially arranged along the length direction of the first pipe 1 at intervals, the second pipe 2 is disposed in the first pipe 1 along the length direction of the first pipe 1, the air guide branch pipes 3 are disposed in plurality, one end of the air guide branch pipe 3 corresponds to the air inlets 11 one by one and is communicated with each other, the other end of the air guide branch pipe 3 is communicated with the inner cavity of the second pipe 2, the first end cap 5 and the second end cap 6 are fixed at two ends of the first pipe 1, the first end cap 5 is disposed with an air outlet 51 communicated with one end of the second pipe 2, the air guide vortex plate 4 is disposed in the second pipe 2, the air guide vortex plate 4 divides the interior of the second tube body 2 into a plurality of independent areas along the air guide branch tube 3, and outlets of the independent areas are all communicated with the air outlet 51. Adopt above-mentioned technical scheme, a plurality of air inlets 11 have been seted up along the length direction of first body 1 to the outer wall of first body 1, second body 2 sets up in first body 1 along the length direction of first body 1, 3 one ends of air guide branch pipe and 11 one-to-ones of air inlet communicate mutually, the other end communicates with the inner chamber of second body 2, first end cover 5 is fixed in the both ends of first body 1 with second end cover 6, set up the gas vent 51 with 2 one end intercommunications of second body on the first end cover 5, place in the second body 2 in the air guide whirl plate 4 and with the interior division of second body 2 into a plurality of independent areas, the export of independent area all accesss to gas vent 51. When the engine exhausts, gas is discharged into the gas inlet 11 on the outer wall of the first pipe body 1, enters the inner cavity of the second pipe body 2 through the gas guide branch pipe 3, and the gas guide vortex plate 4 separates the gas in the second pipe body 2 along the gas guide branch pipe 3 and discharges the gas from the gas outlet 51 arranged on the first end cover 5. The utility model discloses simple structure, occupation space is little, separates engine exhaust's tail gas in exhaust manifold through air guide whirl plate 4 that sets up in the second body 2, avoids the exhaust disturbance, keeps engine tail gas energy, improves tail gas energy utilization and rates, can strengthen exhaust gas turbocharger work efficiency, reduces fuel consumption.

Furthermore, the outer surface of the second pipe body 2 and the inner surface of the first pipe body 1 surround to form a cylindrical diversion trench 7, a water inlet 12 is formed below the first pipe body 1, the water inlet 12 is communicated with one end of the cylindrical diversion trench 7 close to the second end cover 6, and a water outlet 52 communicated with the cylindrical diversion trench 7 is formed in the first end cover 5. Adopt above-mentioned technical scheme, the engine cylinder combustion gas temperature is higher, and high-temperature gas easily causes the harm to exhaust manifold, lets in the cooling water in water inlet 12 department, and the cooling water gets into cylindric guiding gutter 7 from water inlet 12, because cylindric guiding gutter 7 encircles second body 2 and arranges for the heat of tail gas in the second body 2 can be taken away fast to the cooling water, has reduced the temperature of high-temperature gas to the exhaust manifold surface.

Further, the exhaust port 51 is opened in the center of the first end cap 5, and the drain port 52 is provided in plural, and the drain ports 52 are uniformly arranged along the circumferential direction of the cylindrical guide groove 7. By adopting the technical scheme, the exhaust port 51 arranged at the center of the first end cover 5 is beneficial to the exhaust of gas, the water outlets 52 uniformly distributed along the circumferential direction of the cylindrical diversion trench 7 can quickly exhaust cooling water, and the problem that local heat cannot be quickly exhausted due to too low local flow rate of the cylindrical diversion trench 7 is avoided.

Further, the number of the gas inlets 11 is six, and the gas guide swirler plate 4 divides the inside of the second tube 2 into two independent regions by the third gas inlet 11. By adopting the technical scheme, the number of the air inlets 11 is six, the air guide vortex plate 4 is applicable to a six-cylinder engine, the air guide vortex plate divides the second pipe body 2 into two independent areas beside the third air inlet 11, and tail gas is respectively discharged from the corresponding areas to the exhaust port 51.

Claims (5)

1. An exhaust manifold for an engine, characterized in that: the air guide device comprises a first pipe body (1), a second pipe body (2), air guide branch pipes (3), air guide vortex plates (4), a first end cover (5) and a second end cover (6), wherein a plurality of air inlets (11) are formed in the same side of the outer wall of the first pipe body (1), the air inlets (11) are sequentially arranged along the length direction of the first pipe body (1) at intervals, the second pipe body (2) is arranged in the first pipe body (1) along the length direction of the first pipe body (1), the air guide branch pipes (3) are arranged in a plurality of numbers, one ends of the air guide branch pipes (3) correspond to the air inlets (11) one by one and are communicated with each other, the other ends of the air guide branch pipes (3) are communicated with an inner cavity of the second pipe body (2), the first end cover (5) and the second end cover (6) are fixed at two ends of the first pipe body (1), an air outlet (51) communicated with one end of the second pipe body (2) is formed in the first end cover (5), the air guide vortex plate (4) is arranged in the second pipe body (2) in an embedded mode, the air guide vortex plate (4) divides the second pipe body (2) into a plurality of independent areas along the air guide branch pipe (3), and outlets of the independent areas are all communicated with the air outlet (51).

2. The exhaust manifold for an engine according to claim 1, characterized in that: the outer surface of the second pipe body (2) and the inner surface of the first pipe body (1) surround to form a cylindrical diversion trench (7), a water inlet (12) is formed below the first pipe body (1), the water inlet (12) is communicated with one end, close to the second end cover (6), of the cylindrical diversion trench (7), and a water outlet (52) communicated with the cylindrical diversion trench (7) is formed in the first end cover (5).

3. The exhaust manifold for an engine according to claim 1, characterized in that: the exhaust port (51) is opened in the center of the first end cover (5).

4. The exhaust manifold for an engine according to claim 2, characterized in that: the drainage openings (52) are provided in plurality, and the drainage openings (52) are uniformly arranged along the circumferential direction of the cylindrical diversion trench (7).

5. The exhaust manifold for an engine according to claim 1, characterized in that: the number of the air inlets (11) is six, and the air guide vortex plate (4) divides the interior of the second pipe body (2) into two independent areas beside the third air inlet (11).

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