Engine

Abstract

The utility model provides an engine which can improve the sensing precision of an air inlet pressure sensor. The engine includes: an engine body having a plurality of cylinders; and an annular intake manifold including a pair of resonance chambers arranged in a row direction of the plurality of cylinders, a resonance pipe connected to one end of each of the pair of resonance chambers, and a communicating pipe connected to the other end of each of the pair of resonance chambers, the engine further comprises a throttling valve body, a plurality of air inlet pipes, an exhaust gas recirculation air inlet and an air inlet pressure sensor, the throttling valve body is connected to the resonance pipes, and the air inlet pipes are alternately arranged between the resonance chambers and connected with the resonance chambers and the air cylinders. The exhaust gas recirculation air inlet is formed in the resonance pipe, and the air inlet pressure sensor is arranged in one of the resonance chambers and is adjacent to the communicating pipe.

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, the research and development of fuel efficiency improvement is being carried out to contribute to the efficiency of energy. 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 the condensate in the exhaust gas recirculation gas is more obvious, especially, the intake pressure sensor at the intake structure of the engine may contact the condensate in the exhaust gas recirculation gas and adversely affect its sensing. Therefore, it is necessary to improve the engine to overcome the above problems. SUMMARY

[0003] The utility model provides a kind of engine, can improve the sensing accuracy of intake pressure sensor.

[0004] The utility model provides a kind of engine, including: engine body, with multiple cylinders;And annular intake manifold, including a pair of resonance chamber, resonance pipe and communicating pipe, the pair of resonance chamber is arranged along the column direction of the multiple cylinders, the resonance pipe connects one end of each resonance chamber in the pair of resonance chamber, the communicating pipe connects the other end of each resonance chamber in the pair of resonance chamber, the engine further include throttle body, multiple intake pipes, exhaust gas recirculation (Exhaust Gas Recirculation, EGR) air inlet and intake pressure sensor, the throttle body is connected in the resonance pipe, the multiple intake pipes are alternately arranged between the pair of resonance chamber and connect the pair of resonance chamber and the multiple cylinders, the exhaust gas recirculation air inlet is arranged in the resonance pipe, the intake pressure sensor is arranged in one of the pair of resonance chamber and is adjacent to the communicating pipe.

[0005] In the embodiment of the utility model, the open end of one of the multiple intake pipes is connected to one of the pair of resonance chambers, and the intake pressure sensor is arranged outside the open end.

[0006] In the embodiment of the utility model, the engine body includes a rest side cylinder bank, the rest side cylinder bank includes a part of the multiple cylinders and corresponds to the one of the pair of resonance chambers, and the intake pressure sensor is arranged at the end of the one of the pair of resonance chambers.

[0007] In an embodiment of this utility model, one of the pair of resonant chambers has a receiving space at its end, and the intake pressure sensor is disposed in the receiving space.

[0008] In an embodiment of the present invention, the annular intake manifold includes an upper part and a lower part that are joined together, and the receiving space is formed at the joint surface of at least one of the upper part and the lower part, and the receiving space protrudes outward from one of the pair of resonant chambers.

[0009] Based on the above, in the engine of this invention, the intake pressure sensor is positioned near the connecting pipe and away from the resonant pipe. Accordingly, condensate in the exhaust gas recirculation gas entering from the exhaust gas recirculation inlet at the resonant pipe will not come into contact with the intake pressure sensor, thus avoiding any adverse effect of condensate in the exhaust gas recirculation gas on the sensor's sensing accuracy. Therefore, the engine of this invention can improve the sensing accuracy of the intake pressure sensor.

[0010] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description

[0011] Figure 1 This is a partial cross-sectional schematic diagram of an engine according to an embodiment of the present invention;

[0012] Figure 2 yes Figure 1 Top view of the engine;

[0013] Figure 3 Show Figure 2 Partial structure of the engine;

[0014] Figure 4 yes Figure 2 A cross-sectional view of the engine along line II.

[0015] Explanation of reference numerals in the attached figures:

[0016] 100: Engine;

[0017] 110: Engine body;

[0018] 110A, 110B: Cylinder exhaust;

[0019] 112: Cylinder head cover;

[0020] 114: Cylinder head;

[0021] 116: Cylinder;

[0022] 120: Intake structure;

[0023] 122: Annular intake manifold;

[0024] 122a: Upper part;

[0025] 122b: Lower part;

[0026] 1221A, 1221B: Resonance chambers;

[0027] 1222: Resonant tube;

[0028] 1222a: Connection end;

[0029] 1223: Connecting pipe;

[0030] 124A, 124B: Intake pipes;

[0031] 126: Reinforcing ribs;

[0032] 130: Throttling valve body;

[0033] 140: Exhaust gas recirculation inlet;

[0034] 150: Intake pressure sensor;

[0035] E: Open end;

[0036] S: Accommodation space section;

[0037] X, Y, Z: Axial axes. Detailed Implementation

[0038] Figure 1 This is a partial cross-sectional schematic diagram of an engine according to an embodiment of the present invention, showing the axial directions X, Y, and Z. Figure 2 yes Figure 1 A top view of the engine. Please refer to... Figure 1 and Figure 2 The engine 100 of this 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 and 110B. Cylinder bank 110A is, for example, a rest-side cylinder bank, and cylinder bank 110B is, for example, a conventional-side cylinder bank. Each of cylinder banks 110A and 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 cylinder banks 110A and 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 and 110B, and the throttle body 130 is connected to the intake structure 120. Air enters the cylinder banks 110A and 110B via the throttle body 130 and the intake structure 120. The air purifier 140 is positioned above the air intake structure 120.

[0039] Figure 3Show Figure 2 The engine's partial structure. Please refer to... Figure 2 and Figure 3 The intake structure 120 includes an annular intake manifold 122, a plurality of intake pipes 124A and 124B of equal length, and reinforcing ribs 126. The annular intake manifold 122 includes a pair of resonant chambers 1221A and 1221B and includes a resonant pipe 1222 and a connecting pipe 1223. The pair of resonant chambers 1221A and 1221B extend along the cylinder 116 (shown in...). Figure 1 The cylinders 1221A and 1221B are arranged in a column direction (axis Y). Resonance tubes 1222 are connected to one end of each resonance chamber 1221A and 1221B, and connecting pipes are connected to the other end of each resonance chamber 1221A and 1221B. A throttle body 130 is connected to the connecting end 1222a of the resonance tubes 1222. Multiple intake pipes 124A and 124B are alternately arranged between a pair of resonance chambers 1221A and 1221B and connect the pair of resonance chambers 1221A and 1221B to multiple cylinders 116. Reinforcing ribs 126 are disposed above the multiple intake pipes 124A and 124B to strengthen the structure of the multiple intake pipes 124A and 124B.

[0040] In detail, multiple intake pipes 124A are connected to the resonance chamber 1221A and are respectively connected to Figure 1 The cylinder bank 110A shown has multiple cylinders 116 and multiple intake pipes 124B connected to the resonance chamber 1221B and respectively connected to... Figure 1 The cylinder bank 110B shown comprises multiple cylinders 116. A portion of the air flows sequentially from the throttle body 130 through the resonant tube 1222, the resonant chamber 1221A, and the intake manifold 124A into the cylinder bank 110A. Another portion of the air flows sequentially from the throttle body 130 through the resonant tube 1222, the resonant chamber 1221B, and the intake manifold 124B into the cylinder bank 110B. The engine 100 also includes an exhaust gas recirculation (EGR) inlet 140 and an intake pressure sensor 150. The EGR inlet 140 is located in the resonant tube 1222, and the EGR gas enters the intake structure 120 through the EGR inlet 140. The intake pressure sensor 150 is located in the resonant chamber 1221A and adjacent to the connecting pipe 1223, and is used to sense the intake pressure within the intake structure 120.

[0041] As described above, in the engine 100 of this embodiment, the intake pressure sensor 150 is positioned near the connecting pipe 1223 and away from the resonant pipe 1222. Accordingly, condensate in the exhaust gas recirculation gas entering from the exhaust gas recirculation inlet 140 at the resonant pipe 1222 will not come into contact with the intake pressure sensor 150, thus avoiding any adverse effect of the condensate in the exhaust gas recirculation gas on the sensing accuracy of the intake pressure sensor 150. Therefore, the engine of this embodiment can improve the sensing accuracy of the intake pressure sensor 150.

[0042] In this embodiment, the opening end E of one of the plurality of intake pipes 124B (marked as...) Figure 3 Connecting the resonant chamber 1221A, the intake pressure sensor 150 (shown in...) Figure 2 It is positioned outside the opening end E and as far away from the opening end E as possible. In this way, intake pulsation can be avoided from affecting the intake pressure sensor 150, thereby further improving the sensing accuracy of the intake pressure sensor 150.

[0043] In this embodiment, the rest side cylinder bank (cylinder bank 110A) of the engine body 110 corresponds to the resonance chamber 1221A, and the intake pressure sensor 150 is as follows: Figure 2 It is shown to be located at the end of the resonance chamber 1221A. Accordingly, when the cylinder bank (cylinder bank 110A) is at rest, the pressure inside the intake structure 120 can be reliably sensed by the intake pressure sensor 150.

[0044] Figure 4 yes Figure 2 A sectional view of the engine along line II. Please refer to... Figure 4 In this embodiment, the resonant chamber 1221A has a receiving space S at its end, and the intake pressure sensor 150 is disposed within the receiving space S. Specifically, the annular intake manifold 122 includes an upper portion 122a and a lower portion 122b joined together. The receiving space S is formed on at least one of the joining surfaces of the upper portion 122a and the lower portion 122b, and protrudes outward from the resonant chamber 1221A. Accordingly, the intake pressure sensor 150 located at the receiving space S is not affected by intake pulsation, thus improving its sensing accuracy. Furthermore, the intake pressure sensor 150 located at the receiving space S does not affect the intake pulsation within the annular intake manifold 122.

[0045] In summary, in the engine of this invention, the intake pressure sensor is positioned near the connecting pipe and away from the resonant pipe. Therefore, condensate in the exhaust gas recirculation gas entering from the exhaust gas recirculation inlet at the resonant pipe will not come into contact with the intake pressure sensor, thus preventing the condensate in the exhaust gas recirculation gas from adversely affecting the sensing accuracy of the intake pressure sensor. Consequently, the engine of this invention can improve the sensing accuracy of the intake pressure sensor.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this 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 resonant chambers, a resonant tube, and a connecting tube. The pair of resonance 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 resonant chambers. The connecting pipe connects to the other end of each of the pair of resonant chambers. The engine also includes a throttle body, multiple intake pipes, an exhaust gas recirculation intake port, and an intake pressure sensor. The throttling valve body is connected to the resonant tube. The plurality of intake pipes are alternately arranged between the pair of resonance chambers and connect the pair of resonance chambers and the plurality of cylinders. The exhaust gas recirculation inlet is located in the resonant tube. The intake pressure sensor is located in one of the pair of resonant chambers and adjacent to the connecting pipe.

2. The engine according to claim 1, characterized in that, The open end of one of the plurality of air intake pipes is connected to one of the pair of resonant chambers. The intake pressure sensor is located on the outside of the opening end.

3. The engine according to claim 1, characterized in that, The engine body includes a rest-side cylinder bank, which includes a portion of the plurality of cylinders and corresponds to one of the pair of resonance chambers. The intake pressure sensor is located at the end of one of the pair of resonant chambers.

4. The engine according to claim 3, characterized in that, One of the pair of resonant chambers has a receiving space at its end. The intake pressure sensor is located inside the accommodating space.

5. The engine according to claim 1, characterized in that, One of the pair of resonant chambers has a receiving space at its end. The intake pressure sensor is located inside the accommodating space.

6. The engine according to claim 4 or 5, characterized in that, The annular intake manifold includes an upper part and a lower part that are connected to each other. The accommodating space is formed at the joint surface of at least one of the upper and lower portions. The accommodating space protrudes outward from one of the pair of resonant chambers.

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