Methanol engine exhaust pipe

Abstract

The utility model discloses an exhaust pipe of a methanol engine, which relates to the technical field of automobile parts and comprises an exhaust pipeline, and an oxygen concentration sensor and a pressure sensor are arranged on the exhaust pipeline. The exhaust pipeline is installed in the engine, the exhaust pipeline conducts exhaust work, and during exhaust work, the oxygen concentration and pressure are conveniently detected through the oxygen concentration sensor and the pressure sensor on the exhaust pipeline, so that the combustion efficiency of methanol in the engine is conveniently detected, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an exhaust pipe of a methanol engine. Background Art

[0002] Among various mechanical products, the exploration of technology for measuring the oxygen concentration and pressure of single-cylinder exhaust of methanol engines is the most common thing. It is difficult to measure the oxygen concentration and pressure of single-cylinder exhaust in the existing technology, especially for methanol engines. Measuring the oxygen concentration and pressure of single-cylinder exhaust is very important for analyzing the combustion efficiency of methanol. A multifunctional exhaust pipe used in methanol engines can simply measure the oxygen concentration and pressure of single-cylinder exhaust of methanol engines without changing the original engine and on the basis of meeting the power performance of the original engine.

[0003] For example, the publication number CN214366438U disclosed a methanol engine and its engine intake and exhaust system on October 8, 2021, which includes an exhaust system, which includes an EGR pipe, an EGR bypass pipe, an EGR three-way valve, an EGR cooler and an EGR valve. The EGR pipe connects the engine exhaust pipe and the intake pipe. The inlet, the first outlet and the EGR cooler of the EGR three-way valve are connected in series with the EGR pipe in the direction from the engine exhaust pipe to the intake pipe. One end of the EGR bypass pipe is connected to the second outlet of the EGR three-way valve, and the other end is connected to the EGR pipe downstream of the EGR cooler. The EGR valve is arranged on the EGR pipe. The exhaust system disclosed above cannot conveniently detect the oxygen concentration and pressure in the exhaust pipe when in use, and its practicality is poor. Summary of the invention

[0004] The utility model aims to provide a methanol engine exhaust pipe with higher practicality. The utility model can accurately detect the oxygen concentration and pressure of the exhaust gas of a single cylinder of the engine by arranging an oxygen concentration sensor and a pressure sensor on the exhaust pipe, which has higher practicality.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model to solve its technical problem is: a methanol engine exhaust pipe, including an exhaust pipeline, on which an oxygen concentration sensor and a pressure sensor are arranged.

[0006] As a further solution of the utility model, the exhaust pipe includes a front exhaust pipe, a middle exhaust pipe and a rear exhaust pipe, the front exhaust pipe, the middle exhaust pipe and the rear exhaust pipe are connected to each other, the front exhaust pipe, the middle exhaust pipe and the rear exhaust pipe are provided with an air intake end, the middle exhaust pipe is provided with an air outlet end, and each of the air intake ends is provided with an oxygen concentration sensor and a pressure sensor.

[0007] As a further solution of the utility model, the front exhaust pipe is connected to the middle exhaust pipe through a bellows, and the middle exhaust pipe is connected to the rear exhaust pipe through a bellows.

[0008] As a further solution of the utility model, connecting flanges are provided on the air inlet end and the air outlet end.

[0009] As a further solution of the utility model, a mounting boss is provided on the air intake end, an oxygen concentration sensor is provided on the mounting boss, and a first connecting plug-in is provided on the oxygen concentration sensor.

[0010] As a further solution of the utility model, a threaded hole is provided on the air inlet end, a connecting pipe is provided on the threaded hole, the connecting pipe is connected to the pressure sensor, and a second connecting plug-in is provided on the pressure sensor.

[0011] As a further solution of the utility model, the front exhaust pipe, the middle exhaust pipe and the rear exhaust pipe are respectively provided with two air inlet ends, the middle exhaust pipe is provided with an air outlet end, and the six air inlet ends are located on the same straight line.

[0012] The beneficial effects of the utility model are:

[0013] The exhaust pipe is installed in the engine, and the exhaust pipe performs exhaust work. During the exhaust work, the oxygen concentration and pressure are conveniently detected through the oxygen concentration sensor and pressure sensor on the exhaust pipe, so as to conveniently detect the methanol combustion efficiency in the engine, which is more practical.

[0014] The exhaust pipe composed of the front exhaust pipe, the middle exhaust pipe and the rear exhaust pipe detects the oxygen concentration in each cylinder of the engine separately, so that the data after detection is more accurate, and the detection of methanol combustion efficiency is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the structure of the methanol engine exhaust pipe.

[0016] Figure 2 for Figure 1 Schematic diagram of the partial structure of the methanol engine exhaust pipe.

[0017] In the accompanying drawings: 1-front exhaust pipe, 2-middle exhaust pipe, 3-rear exhaust pipe, 4-bellows, 5-threaded hole, 6-mounting boss, 7-connecting flange, 8-oxygen concentration sensor, 9-first connector, 10-connecting pipe, 11-pressure sensor, 12-second connector, 13-inlet end, 14-outlet end. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0020] like Figure 1 As shown, the exhaust pipe of the methanol engine includes an exhaust pipe, and the exhaust pipe is used to discharge oxygen. The exhaust pipe is provided with an oxygen concentration sensor 8 and a pressure sensor 11. The oxygen concentration sensor 8 and the pressure sensor 11 are electrically connected to the ECU of the car, so as to facilitate the monitoring of the methanol combustion efficiency in the engine.

[0021] When in use, the exhaust pipe is installed in the engine, and the exhaust pipe performs exhaust work. During the exhaust work, the oxygen concentration and pressure are conveniently detected through the oxygen concentration sensor 8 and the pressure sensor 11 on the exhaust pipe, so as to conveniently detect the methanol combustion efficiency in the engine, which is more practical.

[0022] Specifically, refer to Figure 1 The exhaust pipe includes a front exhaust pipe 1, a middle exhaust pipe 2 and a rear exhaust pipe 3, which are interconnected. An air intake end 13 is provided on the front exhaust pipe 1, the middle exhaust pipe 2 and the rear exhaust pipe 3, and an air outlet end 14 is provided on the middle exhaust pipe 2. An oxygen concentration sensor 8 and a pressure sensor 11 are provided on each air intake end 13. Oxygen enters the front exhaust pipe 1, the middle exhaust pipe 2 and the rear exhaust pipe 3 through the air intake end 13. The oxygen concentration and pressure of the air intake end 13 are detected by the oxygen concentration sensor 8 and the pressure sensor 11. The oxygen is discharged through the exhaust end 14 on the middle exhaust pipe 2. Multiple in-cylinder detections are performed on the oxygen in the front exhaust pipe 1, the middle exhaust pipe 2 and the rear exhaust pipe 3, so that the data after detection is more accurate, and the detection of methanol combustion efficiency is more accurate.

[0023] The front exhaust pipe 1 is connected to the middle exhaust pipe 2 through the bellows 4, and the middle exhaust pipe 2 is connected to the rear exhaust pipe 3 through the bellows 4. The arrangement of the bellows 4 facilitates fine-tuning of the positions of the front exhaust pipe 1, the middle exhaust pipe 2 and the rear exhaust pipe 3 during installation, thereby ensuring stable connection between the front exhaust pipe 1, the middle exhaust pipe 2 and the rear exhaust pipe 3.

[0024] The air inlet end 13 and the air outlet end 14 are both provided with connecting flanges 7. The connecting flange 7 of the air inlet end 13 is used to connect with the cylinder head, and the connecting flange 7 of the air outlet end 14 is used to connect with the supercharger.

[0025] Reference Figure 1 and2 A mounting boss 6 is provided on the intake end 13, an oxygen concentration sensor 8 is provided on the mounting boss 6, a first connecting plug-in 9 is provided on the oxygen concentration sensor 8, the first connecting plug-in 9 is connected to the ECU, and the oxygen concentration data of each cylinder is measured and recorded in real time by the ECU. In this embodiment, an M18 threaded hole is provided on the mounting boss 6, and the oxygen concentration sensor 8 is arranged in the threaded hole.

[0026] A threaded hole 5 is provided on the intake end 13, a connecting pipe 10 is provided on the threaded hole 5, the connecting pipe 10 is connected to the pressure sensor 11, a second connecting plug-in 12 is provided on the pressure sensor 11, the second connecting plug-in 12 is connected to the ECU, and the oxygen pressure data of each cylinder is measured and recorded in real time by the ECU. Specifically, the threaded hole 5 is a 1 / 8NPT threaded hole, one end of the connecting pipe 10 is threadedly matched with the threaded hole 5, and the other end of the connecting pipe 10 is connected to the pressure sensor 11. The setting of the connecting pipe 10 facilitates the derivation of oxygen, thereby facilitating the detection after the pressure sensor 11 is stably installed.

[0027] Two intake ends 13 are respectively provided on the front exhaust pipe 1, the middle exhaust pipe 2 and the rear exhaust pipe 3, and an outlet end 14 is provided on the middle exhaust pipe 2. The six intake ends 13 are located on the same straight line, and the six intake ends 13 are respectively connected to the six cylinders in the engine, so that the oxygen concentration sensor 8 and the pressure sensor 11 at the intake end 13 can accurately detect the efficiency of the six cylinders in the engine after combustion.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A methanol engine exhaust pipe, characterized in that: The invention comprises an exhaust pipe, wherein the exhaust pipe is provided with an oxygen concentration sensor (8) and a pressure sensor (11), wherein the exhaust pipe comprises a front exhaust pipe (1), an intermediate exhaust pipe (2) and a rear exhaust pipe (3), wherein the front exhaust pipe (1), the intermediate exhaust pipe (2) and the rear exhaust pipe (3) are interconnected, wherein the front exhaust pipe (1), the intermediate exhaust pipe (2) and the rear exhaust pipe (3) are provided with an air intake end (13), wherein the intermediate exhaust pipe (2) is provided with an air outlet end (14), wherein each of the air intake ends (13) is provided with an oxygen concentration sensor (8) and a pressure sensor (11), wherein the front exhaust pipe (1) is connected to the intermediate exhaust pipe (2) via a bellows (4), and wherein the intermediate exhaust pipe (2) is connected to the rear exhaust pipe (3) via a bellows (4).

2. The methanol engine exhaust pipe according to claim 1, characterized in that: The air inlet end (13) and the air outlet end (14) are both provided with connecting flanges (7).

3. The methanol engine exhaust pipe according to any one of claims 1-2, characterized in that: The air inlet end (13) is provided with a mounting boss (6), the mounting boss (6) is provided with an oxygen concentration sensor (8), and the oxygen concentration sensor (8) is provided with a first connecting plug-in (9).

4. The methanol engine exhaust pipe according to claim 3, characterized in that: The air inlet end (13) is provided with a threaded hole (5), the threaded hole (5) is provided with a connecting pipe (10), the connecting pipe (10) is connected to a pressure sensor (11), and the pressure sensor (11) is provided with a second connecting plug-in (12).

5. The methanol engine exhaust pipe according to claim 4, characterized in that: The front exhaust pipe (1), the middle exhaust pipe (2) and the rear exhaust pipe (3) are respectively provided with two air inlet ends (13), the middle exhaust pipe (2) is provided with an air outlet end (14), and the six air inlet ends (13) are located on the same straight line.

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