Engine
By forming a labyrinthine channel inside the engine resonant tube and collecting condensate in the exhaust gas recirculation chamber, the corrosion problem of condensate in the exhaust gas recirculation gas on the throttle valve body is solved, thus achieving the engine's anti-rust effect.
Patent Information
- Application Number
- CN202520086065.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-15
AI Technical Summary
In vehicle engines, condensation in the exhaust gas recirculation (EGR) gas can cause rust on the throttle body, especially when the EGR gas comes into contact with the throttle body, which can negatively affect its function.
By forming a labyrinthine channel inside the engine's resonant tube, condensate is prevented from moving to the throttle body through the exhaust gas recirculation inlet and the resonant tube. The exhaust gas recirculation chamber is used to expand the condensate collection space, and the flow rate is reduced by changing the direction of the exhaust gas recirculation gas flow to facilitate the collection and discharge of condensate.
This effectively prevents condensate from reaching the throttle body, preventing rust and ensuring the reliability and functional stability of the engine.
Smart Images
Figure CN223578080U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of vehicle components, in particular to a kind of engine. BACKGROUND
[0002] In recent years, in order to ensure that more people can afford, reliable, sustainable and advanced energy access, research and development on fuel efficiency improvement are being made to contribute to energy efficiency. However, in the engine of the vehicle, due to the introduction of a large amount of exhaust gas recirculation (EGR) gas, the rust problem caused by condensate in the exhaust gas recirculation gas is more obvious, especially the throttle body may contact the condensate in the exhaust gas recirculation gas and adversely affect its function. Therefore, it is necessary to improve the engine to overcome the above problems. SUMMARY
[0003] The utility model provides a kind of engine, condensate is avoided by simple structure via exhaust gas recirculation air inlet to reach throttle body.
[0004] The utility model provides a kind of engine, comprising: engine body, with multiple cylinders;And annular intake manifold, including a pair of intake chamber, resonant tube and communicating pipe, the pair of intake chamber is arranged along the direction of the multiple cylinder column, the resonant tube is connected one end of each intake chamber in the pair of intake chamber, the communicating pipe is connected the other end of each intake chamber in the pair of intake chamber, the engine further includes throttle body, multiple intake pipes, exhaust gas recirculation air inlet and labyrinth passage, the throttle body is connected in the resonant tube, the multiple intake pipes are alternately arranged between the pair of intake chamber and are connected the pair of intake chamber and the multiple cylinder, the exhaust gas recirculation air inlet is arranged at the bottom of the resonant tube, the labyrinth passage is integrally formed in the resonant tube and is located at the inside position surrounded by the resonant tube, and is communicated with the exhaust gas recirculation air inlet.
[0005] In the embodiment of the utility model, the engine further includes exhaust gas recirculation chamber, the exhaust gas recirculation chamber is adjacent to the upstream of the labyrinth passage.
[0006] In the embodiment of the utility model, the labyrinth passage is formed along the up-down direction.
[0007] In the embodiment of the utility model, the engine further includes cover member, the cover member closes the labyrinth passage at the bottom of the resonant tube, the labyrinth passage includes a pair of exhaust gas recirculation gas passages, and the pair of exhaust gas recirculation gas passages are formed by the cover member.
[0008] In the embodiment of the utility model, the waste gas recirculation chamber and the waste gas recirculation inlet are arranged side by side, the waste gas recirculation chamber is suitable for changing the flow direction of waste gas recirculation gas, the pair of waste gas recirculation gas passages are branch passages extending transversely downstream of the waste gas recirculation chamber and branching, and the cover member covers the branch passages.
[0009] In the embodiment of the utility model, the bottom of the resonance pipe has a stepped portion, and the waste gas recirculation inlet has an opening adjacent to the labyrinth passage, and the position of the opening corresponds to the bottom of the stepped portion.
[0010] In the embodiment of the utility model, the bottom of at least one of the plurality of inlet pipes forms a condensate water drainage groove.
[0011] Based on the above, in the engine of the utility model, the labyrinth passage is integrally formed in the inner side of the resonance pipe to prevent the condensate water from moving to the throttle valve body via the waste gas recirculation inlet and the resonance pipe through the labyrinth passage. Therefore, the engine of the utility model avoids the condensate water reaching the throttle valve body via the waste gas recirculation inlet through a simple structure.
[0012] In order to make the above features and advantages of the utility model more obvious and easy to understand, the following embodiments are specifically described below, and the detailed description is as follows in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 is a partial sectional view of the engine of an embodiment of the utility model;
[0014] Figure 2 is Figure 1 the upper view of the engine of
[0015] Figure 3 shows Figure 2 the partial structure of the engine of
[0016] Figure 4 is Figure 3 the sectional view of the engine of along I-I line of
[0017] Figure 5 is Figure 3 the perspective view of the partial structure of the engine of
[0018] Figure 6 is Figure 5 the side view of the engine of
[0019] Figure 7 is Figure 3 the schematic view of the partial structure of the engine of
[0020] Figure 8 isFigure 1 Partial enlarged view of the engine.
[0021] BRIEF DESCRIPTION OF DRAWINGS
[0022] 100: engine;
[0023] 110: engine body;
[0024] 110A, 110B: cylinder bank;
[0025] 112: cylinder head cover;
[0026] 114: cylinder head;
[0027] 116: cylinder;
[0028] 120: intake structure;
[0029] 122: annular intake manifold;
[0030] 1221A, 1221B: intake chamber;
[0031] 1222: resonance pipe;
[0032] 1222a: connection end;
[0033] 1222b: stepped portion;
[0034] 1223: communication pipe;
[0035] 124A, 124B: intake pipe;
[0036] 126: reinforcing rib;
[0037] 130: throttle body;
[0038] 140: exhaust gas recirculation intake port;
[0039] 140a: opening;
[0040] 150: labyrinth passage;
[0041] 1501: exhaust gas recirculation gas passage;
[0042] 160: exhaust gas recirculation chamber;
[0043] 170: cover member;
[0044] P: flow path;
[0045] T: drain groove;
[0046] X, Y, Z: axial direction; DETAILED DESCRIPTION
[0047] Figure 1 is a partial cross-sectional view of an engine according to an embodiment of the present application, which shows an axial direction X, Y, Z. Figure 2 is Figure 1 is a top view of the engine of Figure 1 and Figure 2 The engine 100 of the present embodiment includes an engine body 110, an intake structure 120, and a throttle body 130. The engine body 110 is, for example, a V-type engine and includes two cylinder banks 110A, 110B. The cylinder bank 110A is, for example, a rest side cylinder bank, and the cylinder bank 110B is, for example, a regular side cylinder bank. Each of the cylinder banks 110A, 110B includes a cylinder head cover 112, a cylinder head 114, and a plurality of cylinders 116. The plurality of cylinders 116 of each of the cylinder banks 110A, 110B are arranged along the axial direction X. The intake structure 120 is disposed on the engine body 110 and connected to the cylinder banks 110A, 110B, and the throttle body 130 is connected to the intake structure 120. Air enters the cylinder banks 110A, 110B via the throttle body 130 and the intake structure 120. An air cleaner 140 is disposed above the intake structure 120.
[0048] Figure 3 shows a partial structure of the engine of Figure 2 . Please refer to Figure 2 and Figure 3 The intake structure 120 includes a ring-shaped intake manifold 122, a plurality of intake pipes 124A, 124B of equal length, and a reinforcing rib 126. The ring-shaped intake manifold 122 includes a pair of intake chambers 1221A, 1221B and includes a resonance pipe 1222 and a communication pipe 1223. The pair of intake chambers 1221A, 1221B are arranged along the row direction (axial direction Y) of the cylinders 116 (shown in Figure 1 ), the resonance pipe 1222 connects one end of each of the intake chambers 1221A, 1221B, and the communication pipe connects the other end of each of the intake chambers 1221A, 1221B. The throttle body 130 is connected to the connection end 1222a of the resonance pipe 1222. The plurality of intake pipes 124A, 124B are alternately arranged between the pair of intake chambers 1221A, 1221B and connect the pair of intake chambers 1221A, 1221B and the plurality of cylinders 116. The reinforcing rib 126 is disposed above the plurality of intake pipes 124A, 124B to reinforce the structure of the plurality of intake pipes 124A, 124B.
[0049] In detail, the plurality of intake pipes 124A are connected to the intake chamber 1221A and connected to the plurality of cylinders 116 of the cylinder bank 110A shown in Figure 1 , respectively, and the plurality of intake pipes 124B are connected to the intake chamber 1221B and connected to the plurality of cylinders 116 of the cylinder bank 110B shown in Figure 1The plurality of cylinders 116 of the cylinder bank 110B is shown. A portion of the air flows from the throttle body 130 to the cylinder bank 110A in sequence through the resonance pipe 1222, the intake chamber 1221A, and the intake pipe 124A. Another portion of the air flows from the throttle body 130 to the cylinder bank 110B in sequence through the resonance pipe 1222, the intake chamber 1221B, and the intake pipe 124B. The engine 100 also includes an exhaust gas recirculation intake port 140. The exhaust gas recirculation intake port 140 is provided at the bottom of the resonance pipe 1222, and the exhaust gas recirculation gas enters the intake structure 120 via the exhaust gas recirculation intake port 140.
[0050] Figure 4 is a cross-sectional view of the engine of Figure 3 along the line I-I. Figure 5 is a perspective view of a partial structure of the engine of Figure 3 Figure 6 is a side view of the engine of Figure 5 . Please refer to Figures 4 to 6 , the engine of the present embodiment also includes a labyrinth passage 150 (which can also be referred to as a tortuous passage). The labyrinth passage 150 is integrally formed in the resonance pipe 1222 at an inner side position surrounded by the resonance pipe 1222, and is communicated to the exhaust gas recirculation intake port 140. The flow path P of the exhaust gas recirculation gas is as shown in Figures 4 to 6
[0051] As described above, in the engine 100 of the present embodiment, the labyrinth passage 150 is integrally formed in the resonance pipe 1222 at the inner side thereof to prevent the condensed water from moving toward the throttle body 130 via the exhaust gas recirculation intake port 140 and the resonance pipe 1222 through the labyrinth passage 150. Thus, the engine 100 of the present embodiment avoids the condensed water from reaching the throttle body 130 via the exhaust gas recirculation intake port 140 by a simple configuration.
[0052] The engine 100 of the present embodiment also includes an exhaust gas recirculation chamber 160 adjacent to the upstream of the labyrinth passage 150. Accordingly, the space for collecting the condensed water can be expanded by the exhaust gas recirculation chamber 160 to reliably capture and retain the condensed water in the exhaust gas recirculation chamber 160 and / or the labyrinth passage 150 when the flow rate of the exhaust gas recirculation gas is reduced. In addition, in the present embodiment, the labyrinth passage 150 is formed along the up-down direction (axial direction Z) so that the flow path P of the exhaust gas recirculation gas extends along the up-down direction (axial direction Z) at the labyrinth passage 150, and thus the condensed water is easily collected by dropping in the labyrinth passage 150.
[0053] Figure 7 is a schematic view of a partial structure of the engine of Figure 3 . Please refer to Figures 5 to 7 The engine 100 of the present embodiment further includes a cover member 170 that closes the labyrinth passage 150 at the bottom of the resonance pipe 1222. The labyrinth passage 150 includes a pair of exhaust gas recirculation gas passages 1501 that are formed by the cover member 170. That is, the upper portion of the labyrinth passage 150 is integrally formed in the resonance pipe 1222, and the lower portion of the labyrinth passage 150 is closed by the cover member 170 and is divided into the pair of exhaust gas recirculation gas passages 1501 by the cover member 170. The pair of exhaust gas recirculation gas passages 1501 of the present embodiment can more effectively collect condensed water than a single passage.
[0054] Further, the exhaust gas recirculation chamber 160 is arranged side by side with the exhaust gas recirculation intake port 140, and the pair of exhaust gas recirculation gas passages 1501 are branch passages that extend laterally downstream of the exhaust gas recirculation chamber 160 and are branched, and the cover member 170 covers the branch passages. The exhaust gas recirculation gas from the exhaust gas recirculation valve enters the exhaust gas recirculation chamber 160 along the vertical direction (axial direction Z) via the exhaust gas recirculation passage 50 (shown in Figure 7 ), changes to flow in the horizontal direction by the exhaust gas recirculation chamber 160, reaches the labyrinth passage 150, and then reaches the resonance pipe 1222 via the pair of exhaust gas recirculation gas passages 1501 and the exhaust gas recirculation intake port 140. Changing the flow direction of the exhaust gas recirculation gas as described above can reduce the flow rate thereof, making it easy for condensed water to remain in the exhaust gas recirculation chamber 160 and / or the labyrinth passage 150.
[0055] Please refer to Figure 5 and Figure 6 In the present embodiment, the bottom of the resonance pipe 1222 has a stepped portion 1222b between the throttle valve body 130 and the exhaust gas recirculation intake port 140. The exhaust gas recirculation intake port 140 has an opening 140a (indicated in Figure 6 ) that is adjacent to the labyrinth passage 150, and the position of the opening 140a corresponds to the bottom of the stepped portion 1222b. Accordingly, condensed water can be further prevented from flowing to the throttle valve body 130 by the stepped portion 1222b.
[0056] Figure 8 is Figure 1 a partial enlarged view of the engine of Figure 8 The bottom of the intake pipe 124A of the present embodiment forms a condensed water drainage groove T. Accordingly, condensed water can be smoothly drained by the guidance of the drainage groove T, and thus the accumulation of condensed water is suppressed to effectively prevent the throttle valve body 130 from being wet.
[0057] In summary, in the engine of the utility model, the resonant pipe integrally forms a labyrinth channel at its inner side to prevent condensed water from moving to the throttle valve body through the exhaust gas recirculation inlet and the resonant pipe via the labyrinth channel.
[0058] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. An engine, characterized in that, include: The engine block has multiple cylinders; as well as The annular intake manifold includes a pair of intake chambers, a resonant tube, and a connecting tube. The pair of intake chambers are arranged along the column direction of the plurality of cylinders. The resonant tube is connected to one end of each of the pair of air intake chambers. The connecting pipe connects to the other end of each of the pair of air intake chambers. The engine also includes a throttle body, multiple intake pipes, an exhaust gas recirculation intake port, and a labyrinthine passage. The throttling valve body is connected to the resonant tube. The plurality of intake pipes are alternately arranged between the pair of intake chambers and connect the pair of intake chambers and the plurality of cylinders. The exhaust gas recirculation inlet is located at the bottom of the resonant tube. The labyrinthine channel is integrally formed on the resonant tube and located on the inner side surrounded by the resonant tube, and is connected to the exhaust gas recirculation inlet.
2. The engine according to claim 1, characterized in that, It also includes an exhaust gas recirculation chamber. The exhaust gas recirculation chamber is located upstream of the labyrinthine passage.
3. The engine according to claim 2, characterized in that, The maze-like passageway is formed along the vertical direction.
4. The engine according to claim 3, characterized in that, It also includes cover components, The cover member closes the labyrinthine channel at the bottom of the resonant tube. The labyrinthine passage includes a pair of exhaust gas recirculation channels, which are formed by the cover member.
5. The engine according to claim 4, characterized in that, The exhaust gas recirculation chamber is arranged in parallel with the exhaust gas recirculation inlet. The exhaust gas recirculation chamber is adapted to change the flow direction of the recirculated exhaust gas. The pair of exhaust gas recirculation channels are branch channels that extend laterally and branch off downstream of the exhaust gas recirculation chamber. The cover member covers the branch channel.
6. The engine according to claim 1, characterized in that, The bottom of the resonant tube has a stepped portion. The exhaust gas recirculation inlet has an opening adjacent to the labyrinthine channel, the opening being positioned corresponding to the bottom of the stepped portion.
7. The engine according to claim 6, characterized in that, At least one of the plurality of air intake pipes forms a condensate drain groove at its bottom.