Turbine, exhaust gas turbocharger and engine

Abstract

The utility model relates to a turbine, an exhaust gas turbocharger and an engine, the turbine comprises a first exhaust gas flow channel, a second exhaust gas flow channel and a turbine chamber, and the first exhaust gas flow channel is used for being communicated with an exhaust pipeline of the engine; the second waste gas flow channel is used for communicating with an exhaust pipeline of the engine; the turbine chamber is used for containing a turbine and communicates with the first waste gas flow channel and the second waste gas flow channel, and the direction of a first guide inlet, away from the turbine chamber, of the first waste gas flow channel is different from the direction of a second guide inlet, away from the turbine chamber, of the second waste gas flow channel. Therefore, the two waste gas flow channels of the turbine are completely independent, the two guide inlets face different directions, connection between the turbine and an engine arranged in a V shape is facilitated, the waste gas flow channels between an exhaust pipeline of the engine and the turbine are smoother and more reasonable, the utilization rate of waste gas energy is increased, and the efficiency of the turbine can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, and particularly relates to a turbine, an exhaust gas turbocharger and an engine. Background Art

[0002] Please refer to Figure 1 , in the existing exhaust gas turbocharger, two turbine exhaust gas flow channels 01 are arranged side by side, and the inlets 02 of the two turbine exhaust gas flow channels 01 face the same direction. This layout form is suitable for engines with an in-line arrangement. However, for an engine with a V-type arrangement that needs to connect a common exhaust gas turbocharger on both sides, it becomes extremely difficult to connect the existing exhaust gas turbocharger. Moreover, the exhaust pipe with multiple bends will increase the pressure drop of the exhaust pipe, which is not conducive to the utilization of exhaust gas energy. The efficiency of the exhaust gas turbocharger will become relatively low, and there are obvious deviations in the efficiency of the two exhaust gas flow channels and the acting force on the turbine, which has an adverse impact on the reliability of the turbocharger turbine. Summary of the Utility Model

[0003] The first object of the utility model is to provide a turbine, so as to facilitate its connection with an engine with a V-type arrangement, reduce the pressure drop of the exhaust pipe, and improve the exhaust gas utilization efficiency.

[0004] The second object of the utility model is to provide an exhaust gas turbocharger and an engine including the above turbine.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A turbine, comprising:

[0007] A first exhaust gas flow channel, which is used to communicate with the exhaust pipe of the engine and guide the exhaust gas of the engine exhaust pipe;

[0008] A second exhaust gas flow channel, which is used to communicate with the exhaust pipe of the engine and guide the exhaust gas of the engine exhaust pipe;

[0009] A turbine chamber, which is used to accommodate the turbine and the turbine chamber is respectively communicated with the first exhaust gas flow channel and the second exhaust gas flow channel. The first guiding inlet of the first exhaust gas flow channel far from the turbine chamber and the second guiding inlet of the second exhaust gas flow channel far from the turbine chamber face different directions.

[0010] In an embodiment of the present application, the first exhaust gas flow channel and the second exhaust gas flow channel are symmetrically arranged about the rotation axis center of the turbine in the turbine chamber.

[0011] In an embodiment of the present application, the first exhaust gas flow channel includes a first guiding portion and a first curved portion. A first guiding inlet is provided at a first end of the first guiding portion, a second end of the first guiding portion is connected to the first curved portion, a first guiding outlet is provided at an end of the first curved portion away from the first guiding portion, and the first curved portion surrounds the turbine chamber from a first side of the turbine chamber.

[0012] The second exhaust gas flow channel includes a second guiding portion and a second curved portion. A second guiding inlet is provided at a first end of the second guiding portion, a second end of the second guiding portion is connected to the second curved portion, a second guiding outlet is provided at an end of the second curved portion away from the second guiding portion, and the second curved portion surrounds the turbine chamber from a second side of the turbine chamber.

[0013] In an embodiment of the present application, along the direction from the first guiding inlet to the first guiding outlet, the cross-sectional area of the first exhaust gas flow channel gradually decreases;

[0014] Along the direction from the second guiding inlet to the second guiding outlet, the cross-sectional area of the second exhaust gas flow channel gradually decreases.

[0015] In an embodiment of the present application, the first curved portion and the second curved portion are arc-shaped structures centered on the rotation axis of the turbine in the turbine chamber.

[0016] In an embodiment of the present application, the first curved portion includes a plurality of first arc segments, and along the direction from the first guiding inlet to the first guiding outlet, the radius of each first arc segment gradually decreases;

[0017] The second curved portion includes a plurality of second arc segments, and along the direction from the second guiding inlet to the second guiding outlet, the radius of each second arc segment gradually decreases.

[0018] In an embodiment of the present application, one end of the first guiding portion away from the first curved portion and one end of the second guiding portion away from the second curved portion are respectively bent away from the turbine chamber.

[0019] In an embodiment of the present application, the first guiding outlet and the second guiding outlet are respectively communicated with the turbine chamber along the tangential direction of the turbine chamber.

[0020] An exhaust gas turbocharger includes a turbine as described in any one of the above.

[0021] An engine includes the exhaust gas turbocharger as described above.

[0022] As can be seen from the above technical solutions, a turbine is disclosed in the present utility model, which includes a first exhaust gas flow channel, a second exhaust gas flow channel, and a turbine chamber. Among them, the first exhaust gas flow channel is used to communicate with the exhaust pipe of the engine to guide the exhaust gas of the engine exhaust pipe; the second exhaust gas flow channel is used to communicate with the exhaust pipe of the engine to guide the exhaust gas of the engine exhaust pipe; the turbine chamber is used to accommodate the turbine and the turbine chamber is respectively communicated with the first exhaust gas flow channel and the second exhaust gas flow channel, and the first guiding inlet of the first exhaust gas flow channel away from the turbine chamber and the second guiding inlet of the second exhaust gas flow channel away from the turbine chamber have different orientations.

[0023] It can be seen that the two exhaust gas flow channels of the above turbine are completely independent, and the two guiding inlets face different directions, which is convenient for the connection of the turbine to the V-type engine, can very friendly adapt to the V-type engine, make the exhaust gas flow channel between the engine exhaust pipe and the turbine smoother and more reasonable, further improve the utilization rate of exhaust gas energy, and can effectively improve the efficiency of the turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 FIG. 12 is a schematic structural diagram of a turbine of an exhaust gas turbocharger in the prior art;

[0026] Figure 2 FIG. 16 is a schematic structural diagram of the turbine provided by the embodiment of the present utility model.

[0027] In the figures:

[0028] 01 is the turbine exhaust gas flow channel; 02 is the inlet;

[0029] 1 is the first exhaust gas flow channel; 101 is the first guiding part; 102 is the first curved part; 103 is the first guiding inlet; 104 is the first guiding outlet; 2 is the second exhaust gas flow channel; 201 is the second guiding part; 202 is the second curved part; 203 is the second guiding inlet; 204 is the second guiding outlet; 3 is the turbine chamber. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] One of the cores of the present utility model is to provide a turbine, and the structural design of the turbine makes it convenient to connect with a V-type engine, reduce the exhaust pipe pressure drop, and improve the exhaust gas utilization efficiency.

[0031] Another core of the present utility model provides an exhaust gas turbocharger and an engine including the above turbine.

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0033] Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of the turbine provided by the embodiment of the present utility model.

[0034] An embodiment of the present utility model discloses a turbine, which includes a first exhaust gas flow channel 1, a second exhaust gas flow channel 2, and a turbine chamber 3.

[0035] Among them, the first exhaust gas flow channel 1 is used to communicate with the exhaust pipe of the engine to guide the exhaust gas of the engine exhaust pipe; the second exhaust gas flow channel 2 is used to communicate with the exhaust pipe of the engine to guide the exhaust gas of the engine exhaust pipe; the turbine chamber 3 is used to accommodate the turbine and the turbine chamber 3 is respectively communicated with the first exhaust gas flow channel 1 and the second exhaust gas flow channel 2. The first guiding inlet 103 of the first exhaust gas flow channel 1 far from the turbine chamber 3 and the second guiding inlet 203 of the second exhaust gas flow channel 2 far from the turbine chamber 3 have different orientations.

[0036] It can be seen that the two exhaust gas flow channels of the above turbine are completely independent, and the two guiding inlets face different directions, which is convenient for the connection of the turbine to the V-type engine, can very friendly adapt to the V-type engine, makes the exhaust gas flow channel between the engine exhaust pipe and the turbine smoother and more reasonable, further improves the utilization rate of exhaust gas energy, and can effectively improve the efficiency of the turbine.

[0037] Further optimizing the above technical solution, as Figure 2 shown, the first exhaust gas flow channel 1 and the second exhaust gas flow channel 2 are symmetrically arranged about the rotation axis center of the turbine in the turbine chamber 3. The symmetrically arranged two exhaust gas flow channels can very friendly adapt to the V-type engine, make the exhaust gas flow channel of the exhaust gas turbocharger smoother and more reasonable, further improve the utilization rate of exhaust gas energy, and improve the efficiency of the exhaust gas turbocharger.

[0038] Such as Figure 2As shown in the figure, the first exhaust gas flow path 1 includes a first guiding portion 101 and a first curved portion 102. A first guiding inlet 103 is provided at the first end of the first guiding portion 101. The second end of the first guiding portion 101 is connected to the first curved portion 102. A first guiding outlet 104 is provided at the end of the first curved portion 102 away from the first guiding portion 101. The first curved portion 102 surrounds the turbine chamber 3 from the first side of the turbine chamber 3. The second exhaust gas flow path 2 includes a second guiding portion 201 and a second curved portion 202. A second guiding inlet 203 is provided at the first end of the second guiding portion 201. The second end of the second guiding portion 201 is connected to the second curved portion 202. A second guiding outlet 204 is provided at the end of the second curved portion 202 away from the second guiding portion 201. The second curved portion 202 surrounds the turbine chamber 3 from the second side of the turbine chamber 3.

[0039] Further, as Figure 2 shown, along the direction from the first guiding inlet 103 to the first guiding outlet 104, the cross-sectional area of the first exhaust gas flow path 1 gradually decreases; along the direction from the second guiding inlet 203 to the second guiding outlet 204, the cross-sectional area of the second exhaust gas flow path 2 gradually decreases.

[0040] The first curved portion 102 and the second curved portion 202 can adopt different shapes according to needs. For example, in one embodiment, the first curved portion 102 and the second curved portion 202 are arc-shaped structures centered on the rotation axis of the turbine in the turbine chamber 3.

[0041] In another embodiment, the first curved portion 102 includes a plurality of first arc segments. Along the direction from the first guiding inlet 103 to the first guiding outlet 104, the radius of each first arc segment gradually decreases; the second curved portion 202 includes a plurality of second arc segments. Along the direction from the second guiding inlet 203 to the second guiding outlet 204, the radius of each second arc segment gradually decreases.

[0042] The end of the first guiding portion 101 away from the first curved portion 102 and the end of the second guiding portion 201 away from the second curved portion 202 are respectively bent away from the turbine chamber 3.

[0043] The first guiding outlet 104 and the second guiding outlet 204 are respectively communicated with the turbine chamber 3 along the tangential direction of the turbine chamber 3.

[0044] The embodiment of the present utility model further provides an exhaust gas turbocharger. The exhaust gas turbocharger includes a turbine as described in the above embodiment. Since the exhaust gas turbocharger adopts the turbine in the above embodiment, the technical effects of the exhaust gas turbocharger can be referred to the above embodiment.

[0045] An embodiment of the present utility model further provides an engine, which includes the exhaust gas turbocharger as described above. Since this engine adopts an exhaust gas turbocharger including the above-mentioned turbine, the technical effects of this engine can be referred to the above embodiments.

[0046] It should be noted that the embodiments in this specification are all described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0047] Specific examples are used in this article to elaborate on the principles and implementation manners of the present utility model. The description of the above embodiments is only used to help understand the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A turbine, characterized in that: include: a first exhaust gas flow passage, used to communicate with an exhaust pipe of the engine and to guide the exhaust gas of the exhaust pipe of the engine; a second exhaust gas flow passage, used to communicate with an exhaust pipe of the engine and to guide the exhaust gas of the exhaust pipe of the engine; The turbine chamber is used to accommodate a turbine and is connected to the first exhaust gas flow passage and the second exhaust gas flow passage respectively. A first guide inlet of the first exhaust gas flow passage away from the turbine chamber and a second guide inlet of the second exhaust gas flow passage away from the turbine chamber have different directions.

2. The turbine according to claim 1, characterized in that The first exhaust gas flow passage and the second exhaust gas flow passage are arranged symmetrically with respect to a rotation axis of the turbine of the turbine chamber.

3. The turbine according to claim 2, characterized in that The first exhaust gas flow passage comprises a first guide portion and a first curved portion, the first guide inlet is arranged at a first end of the first guide portion, the second end of the first guide portion is connected to the first curved portion, a first guide outlet is arranged at an end of the first curved portion away from the first guide portion, and the first curved portion surrounds the turbine chamber from a first side of the turbine chamber; The second exhaust gas flow channel includes a second guide portion and a second curved portion, the second guide inlet is set at the first end of the second guide portion, the second end of the second guide portion is connected to the second curved portion, the second guide outlet is set at an end of the second curved portion away from the second guide portion, and the second curved portion surrounds the turbine chamber from the second side of the turbine chamber.

4. The turbine according to claim 3, characterized in that The flow cross-sectional area of ​​the first exhaust gas flow passage gradually decreases along the direction from the first guide inlet to the first guide outlet; Along the direction from the second guide inlet to the second guide outlet, the flow cross-sectional area of ​​the second exhaust gas flow passage gradually decreases.

5. The turbine according to claim 3, characterized in that The first curved portion and the second curved portion are arc-shaped structures with the rotation axis of the turbine of the turbine chamber as the center.

6. The turbine according to claim 3, characterized in that The first curved portion includes a plurality of first arc segments, and the radius of each of the first arc segments gradually decreases along the direction from the first guide inlet to the first guide outlet; The second curved portion includes a plurality of second arc segments, and the radius of each of the second arc segments gradually decreases along the direction from the second guide inlet to the second guide outlet.

7. The turbine according to claim 3, characterized in that One end of the first guide portion away from the first curved portion and one end of the second guide portion away from the second curved portion are respectively bent in a direction away from the turbine chamber.

8. The turbine according to claim 3, characterized in that The first guide outlet and the second guide outlet are respectively communicated with the turbine chamber along a tangential direction of the turbine chamber.

9. An exhaust gas turbocharger, characterized in that: Comprising a turbine as claimed in any one of claims 1 to 8.

10. An engine, characterized in that: Comprising the exhaust gas turbocharger as claimed in claim 9.

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