Volute device of variable geometry pulse gas inlet turbine

Abstract

The invention discloses a volute device of a variable geometry pulse gas inlet turbine, which comprises a volute. The volute is provided with a gas inlet flow passage. One end of the gas inlet flow passage is provided with a gas inlet, and the other end of the gas inlet flow passage is provided with a volute gas outlet. The gas inlet flow passage comprises two sets of working flow passages, i.e. an inner flow passage and an outer flow passage, wherein the inner flow passage comprises a first inner flow passage and a second inner flow passage; and the outer flow passage comprises a first outer flow passage and a second outer flow passage. The gas inlet comprises a first volute inlet and a second volute inlet. The first inner flow passage and the first outer flow passage are communicated with the first volute inlet and are used for realizing half-cycle gas intake in the range of 0 to 180 degrees in the circumference direction. The second inner flow passage and the second outer flow passage are communicated with the second volute inlet and are used for realizing half-cycle gas intake in the range of 180 to 360 degrees in the circumference direction. The volute device has a simple structure, good inheritance and low cost, and engineering is easily and rapidly realized. A gas inlet regulating device in the volute device has a simple structure. A control mode of the gas inlet regulating device is easy to realize. The gas inlet regulating device has high reliability.

Description

technical field

[0001] The invention relates to a variable-geometry pulse-intake turbocharger, in particular to a volute of a variable-geometry pulse-intake turbine that satisfies the performance requirements of various working conditions of the engine through the joint work of different flow channels A device belongs to the field of internal combustion engines. Background technique

[0002] In practical engineering applications, the double-chamber half-circle partitioned intake turbine based on pulse supercharging is a relatively traditional structural form. The intake area of ​​the channel is 0-180 degrees, the intake area of ​​the lower channel is 180-360 degrees, the intake area of ​​the upper channel and the lower channel form a 360-degree full-circle air intake area, and the intake air passes through the upper and lower channels respectively Drive the turbine wheel to do work. With the increasingly stringent emission regulations, the supercharger must have higher boo...

Examples

Embodiment 1

[0046] Example 1, such as figure 1 , figure 2 As shown, a volute device of a variable geometry pulse intake turbine includes a volute 3, the volute 3 is provided with an air intake channel, one end of the air intake channel is provided with an air inlet, and the other end is provided with an air inlet. A volute air outlet 4 is arranged.

[0047] The inlet runner includes two groups of working runners, one of which is an inner runner, and the other is an outer runner, and the outer runner is located on one side of the inner runner.

[0048] The inner flow channel includes a first inner flow channel 5 and a second inner flow channel 6 , and the outer flow channel includes a first outer flow channel 7 and a second outer flow channel 8 .

[0049] The air inlet includes a first volute inlet 1 and a second volute inlet 2;

[0050] The first inner flow channel 5 and the first outer flow channel 7 communicate with the first volute inlet 1 and realize half-circle air intake of 0-18...

Embodiment 2

[0063] Example 2, such as Figure 6 , Figure 7 As shown, in Embodiment 1, the first volute inlet 1 and the second volute inlet 2 can also be a rectangular structure arranged side by side and communicate with the exhaust manifold respectively.

[0064] The first outer flow channel 7 , the first inner flow channel 5 , the second inner flow channel 6 and the second outer flow channel 8 are arranged side by side in the volute.

[0065] Such as Figure 8 As shown, the exhaust manifold includes a first exhaust pipe outlet 14 and a second exhaust pipe outlet 15 with a rectangular section, and the first inner runner 5 and the first outer runner 7 correspond to each other through the first volute inlet 1 It communicates with the first exhaust pipe outlet 14 , and the second inner flow channel 6 and the second outer flow channel 8 correspond to the second exhaust pipe outlet 15 through the second volute inlet 2 .

Embodiment 3

[0066] Example 3, such as Figure 9 As shown, in the above-mentioned embodiment 2, the air intake regulating devices of the two outer runners can also be located on both sides of the volute 3 respectively, and the air intake regulating devices realize the distribution of the intake air flow according to the actual working conditions of the engine.

[0067] The present invention aims at the demand of the engine for the variable section turbocharger, and completes the development of the variable flow partial intake turbine device, which effectively utilizes the energy of the exhaust gas and takes into account the supercharging requirements of the engine under low-speed and medium-high-speed working conditions . This type of variable flow partial intake turbine device can be completed by using the existing common supercharger casting and processing technology.

technical field

[0001] The invention relates to a variable-geometry pulse-intake turbocharger, in particular to a volute of a variable-geometry pulse-intake turbine that satisfies the performance requirements of various working conditions of the engine through the joint work of different flow channels A device belongs to the field of internal combustion engines. Background technique

[0002] In practical engineering applications, the double-chamber half-circle partitioned intake turbine based on pulse supercharging is a relatively traditional structural form. The intake area of ​​the channel is 0-180 degrees, the intake area of ​​the lower channel is 180-360 degrees, the intake area of ​​the upper channel and the lower channel form a 360-degree full-circle air intake area, and the intake air passes through the upper and lower channels respectively Drive the turbine wheel to do work. With the increasingly stringent emission regulations, the supercharger must have higher boo...

Examples

Embodiment 1

[0046] Example 1, such as figure 1 , figure 2 As shown, a volute device of a variable geometry pulse intake turbine includes a volute 3, the volute 3 is provided with an air intake channel, one end of the air intake channel is provided with an air inlet, and the other end is provided with an air inlet. A volute air outlet 4 is arranged.

[0047] The inlet runner includes two groups of working runners, one of which is an inner runner, and the other is an outer runner, and the outer runner is located on one side of the inner runner.

[0048] The inner flow channel includes a first inner flow channel 5 and a second inner flow channel 6 , and the outer flow channel includes a first outer flow channel 7 and a second outer flow channel 8 .

[0049] The air inlet includes a first volute inlet 1 and a second volute inlet 2;

[0050] The first inner flow channel 5 and the first outer flow channel 7 communicate with the first volute inlet 1 and realize half-circle air intake of 0-18...

Embodiment 2

[0063] Example 2, such as Figure 6 , Figure 7 As shown, in Embodiment 1, the first volute inlet 1 and the second volute inlet 2 can also be a rectangular structure arranged side by side and communicate with the exhaust manifold respectively.

[0064] The first outer flow channel 7 , the first inner flow channel 5 , the second inner flow channel 6 and the second outer flow channel 8 are arranged side by side in the volute.

[0065] Such as Figure 8 As shown, the exhaust manifold includes a first exhaust pipe outlet 14 and a second exhaust pipe outlet 15 with a rectangular section, and the first inner runner 5 and the first outer runner 7 correspond to each other through the first volute inlet 1 It communicates with the first exhaust pipe outlet 14 , and the second inner flow channel 6 and the second outer flow channel 8 correspond to the second exhaust pipe outlet 15 through the second volute inlet 2 .

Embodiment 3

[0066] Example 3, such as Figure 9 As shown, in the above-mentioned embodiment 2, the air intake regulating devices of the two outer runners can also be located on both sides of the volute 3 respectively, and the air intake regulating devices realize the distribution of the intake air flow according to the actual working conditions of the engine.

[0067] The present invention aims at the demand of the engine for the variable section turbocharger, and completes the development of the variable flow partial intake turbine device, which effectively utilizes the energy of the exhaust gas and takes into account the supercharging requirements of the engine under low-speed and medium-high-speed working conditions . This type of variable flow partial intake turbine device can be completed by using the existing common supercharger casting and processing technology.

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