TWI659150B - Locomotive exhaust pipe structure - Google Patents

Abstract

An exhaust pipe structure of a locomotive is provided on a locomotive and includes a catalyst portion, an exhaust pipe, an expansion chamber, a first sensor, and a second sensor. The exhaust pipe includes a first pipe portion and a second pipe portion. One end of the first pipe portion is connected to an engine of the locomotive, and the other end of the first pipe portion is connected to the second pipe portion. The second pipe portion Extending along a half-arc path, one end of the second tube portion is connected to the first tube portion, and the other end of the second tube portion is connected to the catalyst portion. The expansion chamber is directly connected to the catalyst portion. A first sensor is disposed on the second tube portion. A second sensor is disposed in the expansion chamber, and the catalyst portion is located between the first sensor and the second sensor.

Description

Locomotive exhaust pipe structure

The invention relates to an exhaust pipe structure of a locomotive, and more particularly to an exhaust pipe structure of a locomotive with a sensor.

The conventional locomotive hopes that the engine can provide better torque output at low and medium speeds, so the length of the front pipe of the exhaust pipe will generally be longer. However, the exhaust pipe with a long front pipe not only affects the appearance of the locomotive, but also affects the weight of the locomotive, reducing the handling performance of the locomotive.

In addition, the conventional exhaust pipe design cannot detect the air purification effect of the catalyst converter, thus increasing the environmental pollution.

The invention provides a locomotive exhaust pipe structure for solving the problems of the conventional technology. The locomotive exhaust pipe structure is provided on a locomotive, and includes a catalyst part, an exhaust pipe, an expansion chamber, a first sensor, and A second sensor. The exhaust pipe includes a first pipe portion and a second pipe portion. One end of the first pipe portion is connected to an engine of the locomotive, and the other end of the first pipe portion is connected to the second pipe portion. The second pipe portion Extending along a half-arc path, one end of the second tube portion is connected to the first tube portion, and the other end of the second tube portion is connected to the catalyst portion. The expansion chamber is directly connected to the catalyst portion. A first sensor is disposed on the second tube portion. A second sensor is disposed in the expansion chamber, and the catalyst portion is located between the first sensor and the second sensor, wherein an exhaust gas flow enters the exhaust gas from the engine. Tube, the exhaust gas flow passes through the first tube portion and the second tube portion, before the exhaust gas flow enters the catalyst portion, it is detected by the first sensor, after the exhaust gas flow leaves the catalyst portion, it is subjected to Detection by the second sensor.

In one embodiment, the first sensor and the second sensor are oxygen-containing sensors.

In one embodiment, the catalyst portion has an air outlet, and the distance between the second sensor and the air outlet is less than 30 mm.

In one embodiment, the locomotive exhaust pipe structure further includes a silencing chamber and a connecting pipe, one end of the connecting pipe is connected to the expansion chamber, and the other end of the connecting pipe is connected to the silencing chamber.

In one embodiment, the exhaust gas flow is rotated 180 degrees in the traveling direction of the second tube portion.

In an embodiment, the exhaust gas flow enters the expansion chamber from the catalyst portion, and enters the silencing chamber through the connection pipe. The exhaust gas flow rotates 180 degrees in the traveling direction of the expansion chamber.

In one embodiment, the first sensor is parallel to the second sensor.

In an embodiment, the first sensor and the second sensor are located between the engine and the expansion chamber in a vertical direction.

In one embodiment, the locomotive includes a rear rocker arm axis and a crankshaft center, the catalyst portion is located between the rear rocker arm axis and the crankshaft center in a horizontal direction, the first sensor and The second sensors are located between the center of the crankshaft and the center of the rear rocker arm in the horizontal direction.

In one embodiment, the locomotive exhaust pipe structure further includes a decorative cover, a first communication pipe, and a second communication pipe. The first communication pipe is connected to the first sensor. The second communication tube is connected to the second sensor, the decorative cover includes a cable management slot, the decorative cover is located between the center of the crankshaft and the axis of the rear rocker arm in the horizontal direction, the first connector The through pipe and the second communication pipe extend through the cable management groove and are bounded by the cable management groove.

Through the curved design of the second pipe portion of the embodiment of the present invention, the path length of the exhaust pipe can be increased in a limited space to maintain the performance output of the engine. In addition, before the airflow enters the catalyst section, the design is rotated 180 degrees in the direction of travel, which can increase the temperature of the airflow and improve the exhaust purification effect of the catalyst section. In addition, through the first sensor and the second sensor of the embodiment of the present invention, the degree of deterioration of the catalyst portion can be detected, and the engine injection system can be dynamically adjusted, thereby achieving the effect of slowing down the deterioration of the catalyst portion.

M‧‧‧ Locomotive

1‧‧‧ Locomotive exhaust pipe structure

11‧‧‧ Catalyst Department

111‧‧‧ Outlet

12‧‧‧ exhaust pipe

121‧‧‧First tube department

122‧‧‧Second Tube Department

13‧‧‧Expansion chamber

14‧‧‧ Anechoic Room

15‧‧‧ connecting pipe

171‧‧‧first sensor

172‧‧‧Second sensor

173‧‧‧First connecting pipe

174‧‧‧Second connecting pipe

18‧‧‧Cover

181‧‧‧ cable trunking

2‧‧‧ Power System

21‧‧‧Engine

91‧‧‧ front wheel

92‧‧‧ rear wheel

93‧‧‧Crankshaft Center

94‧‧‧Rear rocker center

A‧‧‧Airflow

P‧‧‧Semicircular arc path

X‧‧‧Horizontal

Y‧‧‧ vertical

d‧‧‧distance

FIG. 1 is a schematic diagram showing a locomotive according to an embodiment of the present invention.

FIG. 2A shows a detailed structure of an exhaust pipe structure of a locomotive according to an embodiment of the present invention.

FIG. 2B shows the airflow direction in the exhaust pipe structure of the locomotive according to the embodiment of the present invention.

FIG. 3 shows a modification of the locomotive exhaust pipe structure according to the embodiment of the present invention.

FIG. 4 shows a neighboring structure of an exhaust pipe structure of a locomotive according to an embodiment of the present invention.

FIG. 5 shows the structure of an exhaust pipe of a locomotive according to another embodiment of the present invention.

Referring to FIG. 1, it is a schematic diagram showing a locomotive M according to an embodiment of the present invention, including components of a locomotive exhaust pipe structure 1, a front wheel 91, a rear wheel 92, a power system 2, and the like.

The locomotive M includes a front section, a middle section, and a rear section. The front section of the locomotive M is provided with a faucet, a front wheel 91, a turn signal and a keyhole. The middle section of the locomotive M is provided with components such as a power system 2, a seat cushion and a tripod. The rear section of the locomotive M is provided with components such as a tail light, a rear wheel 92, and a fender.

The faucet is used to control the traveling direction of the locomotive M. The faucet can be equipped with functional parts, including meters, switches, rear-view mirrors and other units. The faucet also has a handle (including a refueling grip) and a hand brake. The user can control the steering of the faucet through the handle, adjust the throttle angle of the power system 2 through the refueling grip to control the power output, and slow down the locomotive M through the hand brake. The faucet can also be equipped with a main light, which provides the main light illumination for the locomotive M.

The faucet and the front wheel 91 are linked through a faucet rotation axis, whereby the angle of the front wheel 91 can be controlled by rotating the faucet, thereby controlling the traveling direction of the locomotive M.

The power system 2 connects and drives the rear wheels 92, thereby providing power to the locomotive M and moving the locomotive M forward.

Fig. 2A shows a detailed structure of a locomotive exhaust pipe structure 1 according to an embodiment of the present invention. Referring to FIGS. 1 and 2A, the locomotive exhaust pipe structure 1 includes a catalyst portion 11 and an exhaust pipe 12. In this embodiment, the number of the exhaust pipes 12 is two. However, the above disclosure does not limit the present invention, and the number of the exhaust pipes 12 may also be one or three or more. The exhaust pipe 12 includes a first pipe portion 121 and a second pipe portion 122. One end of the first pipe portion 121 is connected to the engine 21 of the power system 2 (see FIG. 1). One end is connected to the second tube portion 122, the second tube portion 122 extends along a half-arc path P, one end of the second tube portion 122 is connected to the first tube portion 121, and the other end of the second tube portion 122 is connected to the Catalysis section 11. The locomotive exhaust pipe structure 1 further includes an expansion chamber 13, a first sensor 171, and a second sensor 172. First sensor 171 Provided in the second tube portion 122. The second sensor 172 is disposed in the expansion chamber 13, and the catalyst portion 11 is located between the first sensor 171 and the second sensor 172. FIG. 2B shows the airflow direction in the exhaust pipe structure of the locomotive according to the embodiment of the present invention. Referring to FIG. 2B, an exhaust gas flow A enters the exhaust pipe from the engine, the exhaust gas flow A passes through the first pipe portion 121 and the second pipe portion 122, and the exhaust gas flow A enters the catalyst portion 11 After being detected by the first sensor 171, after the exhaust gas flow A leaves the catalyst portion 11, it is detected by the second sensor 172.

In one embodiment, the first sensor 171 and the second sensor 172 are oxygen-containing sensors. The first sensor 171 senses the oxygen-containing concentration before the exhaust gas flow A enters the catalyst portion 11. The second sensor 172 senses the oxygen concentration of the exhaust gas flow A after leaving the catalyst portion 11.

In one embodiment, the locomotive exhaust pipe structure 1 further includes a controller and a warning unit, and the controller is coupled to the first sensor 171 and the second sensor 172 and the warning unit. When the controller judges that the purification ability of the catalyst section 11 has fallen to a specific level according to the signals provided by the first sensor 171 and the second sensor 172, the controller drives the warning unit to issue a warning signal . This allows the user to know the degree of deterioration of the catalyst portion. In addition, the engine includes a plurality of fuel supply units, the fuel supply units are coupled to the controller, and the controller controls the fuels according to signals provided by the first sensor 171 and the second sensor 172 The amount of fuel supplied by the supply unit has the effect of slowing the deterioration of the catalyst section.

Referring to FIG. 2A, in an embodiment, the catalyst portion 11 has an air outlet 111, and the distance d between the second sensor 172 and the air outlet 111 is less than 30 mm, thereby obtaining a more accurate Sensing effect.

Referring to FIG. 2A, in one embodiment, the locomotive exhaust pipe structure 1 is more It includes a silencing chamber 14 and a connecting pipe 15. One end of the connecting pipe 15 is connected to the expansion chamber 13, and the other end of the connecting pipe 15 is connected to the silencing chamber 14. The design of the anechoic chamber 14 mainly reduces noise.

Referring to FIG. 2B, in an embodiment, an airflow (exhaust gas) A enters the exhaust pipe 12 from the engine, and the airflow A passes through the first pipe portion 121 and the second pipe portion 122 and enters the catalyst. Part 11, the airflow A rotates 180 degrees in the traveling direction in the second tube part 122. In an embodiment, the airflow A then enters the expansion chamber 13 from the catalyst portion 11 and passes through the connecting pipe 15 to enter the silencing chamber 14. The airflow A rotates 180 degrees in the traveling direction of the expansion chamber 13. . Through the above-mentioned curved design of the second pipe portion 122, the path length of the exhaust pipe 12 can be increased in a limited space to maintain the performance output of the engine. In addition, before the airflow A enters the catalyst portion 11, the design is rotated 180 degrees in the traveling direction, which can increase the temperature of the airflow A and improve the exhaust purification effect of the catalyst portion 11.

Referring to FIG. 2A, in the above embodiment, the first sensor 171 is parallel to the second sensor 172. However, the above disclosure does not limit the present invention. Referring to FIG. 3, in a modified example, the first sensor 171 may also be disposed at another position of the second tube portion 122 and is not parallel to the second sensor 172.

Referring to FIGS. 1 and 4, in an embodiment, the first sensor 171 and the second sensor 172 are located between the engine 21 and the expansion chamber 13 in a vertical direction Y. The locomotive includes a rear rocker arm axis 94 and a crank center 93. The catalyst portion 11 is located between the rear rocker arm axis 94 and the crank center 93 in a horizontal direction X. The first sensor 171 And the second sensor 172 is located between the crank center 93 and the rear rocker arm axis 94 in the horizontal direction X. Through the above design, the first sensor 171 and the second sensor 172 can be prevented from occurring with other locomotive components. put one's oar in.

Referring to FIG. 4, in an embodiment, the locomotive exhaust pipe structure 1 further includes a decorative cover 18, a first communication pipe 173, and a second communication pipe 174. The first communication pipe 173 is connected to the first communication pipe 173. A sensor 171 is connected to the second sensor 172. The decorative cover 18 includes a cable management groove 181. The decorative cover 18 is located between the crank center 93 and the rear rocker arm center 94 in the horizontal direction X. The first communication tube 173 and the second communication tube. 174 extends through and is bounded by the cable management groove 181.

Referring to FIG. 5, which shows a locomotive exhaust pipe structure according to another embodiment of the present invention, in which the number of exhaust pipes 12 of the locomotive exhaust pipe structure is one. As in the previous embodiment, the exhaust pipe 12 includes a first pipe portion 121 and a second pipe portion 122. One end of the first pipe portion 121 is connected to the engine of the power system, and the other end of the first pipe portion 121 is connected to the engine. A second pipe portion 122 extending along a half-arc path, one end of the second pipe portion 122 is connected to the first pipe portion 121, and the other end of the second pipe portion 122 is connected to the catalyst portion 11 . The locomotive exhaust pipe structure 1 further includes an expansion chamber 13, a first sensor 171, and a second sensor 172. The first sensor 171 is disposed on the second tube portion 122. The second sensor 172 is disposed in the expansion chamber 13, and the catalyst portion 11 is located between the first sensor 171 and the second sensor 172.

Through the curved design of the second pipe portion of the embodiment of the present invention, the path length of the exhaust pipe can be increased in a limited space to maintain the performance output of the engine. In addition, before the airflow enters the catalyst section, the design is rotated 180 degrees in the direction of travel, which can increase the temperature of the airflow and improve the exhaust purification effect of the catalyst section. In addition, through the first sensor and the second sensor in the embodiment of the present invention, the degree of deterioration of the catalyst portion can be detected, and the engine injection system can be dynamically adjusted to further reduce the deterioration of the catalyst portion. The effect.

Although the present invention has been disclosed as above with specific preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can still make some changes and decorations without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the appended patent application.

Claims (5)

An exhaust pipe structure of a locomotive is provided on a locomotive and includes: a catalyst portion; an exhaust pipe including a first pipe portion and a second pipe portion; one end of the first pipe portion is connected to the locomotive; An engine, the other end of the first tube portion is connected to the second tube portion, the second tube portion extends along a half-arc path, and one end of the second tube portion is connected to the first tube portion, and the second tube portion The other end is connected to the catalyst portion; an expansion chamber, which is directly connected to the catalyst portion; a first sensor provided in the second tube portion; a second sensor provided in the expansion room, The catalyst portion is located between the first sensor and the second sensor, wherein an exhaust gas flow enters the exhaust pipe from the engine, and the exhaust gas flow passes through the first pipe portion and the second pipe portion. Before the exhaust gas flow enters the catalyst portion, it is detected by the first sensor, after the exhaust gas flow leaves the catalyst portion, it is detected by the second sensor, wherein the first sensor And the second sensor are oxygen-containing sensors; a muffler chamber; and a connecting pipe, one end of the connecting pipe is connected to the expansion , The other end of the connecting pipe is connected to the anechoic chamber, wherein the exhaust gas flow is rotated 180 degrees in the traveling direction of the second pipe portion, wherein the first sensor and the second sensor are in a vertical direction Are located between the engine and the expansion chamber, wherein the locomotive includes a rear rocker arm shaft center and a crankshaft center, and the catalyst portion is located between the rear rocker arm shaft center and the crankshaft center in a horizontal direction, The first sensor and the second sensor are located between the center of the crankshaft and the axis of the rear rocker arm in the horizontal direction. According to the exhaust pipe structure of a locomotive described in item 1 of the patent application scope, wherein the catalyst portion has an air outlet, and the distance between the second sensor and the air outlet is less than 30 mm. The exhaust pipe structure of a locomotive according to item 1 of the scope of patent application, wherein the exhaust gas flow enters the expansion chamber from the catalyst portion, and enters the silencing chamber through the connecting pipe, and the exhaust gas flow is in the expansion chamber Rotate 180 degrees in the direction of travel. The exhaust pipe structure of a locomotive according to item 1 of the scope of patent application, wherein the first sensor is parallel to the second sensor. The locomotive exhaust pipe structure described in item 1 of the scope of patent application, further comprising a decorative cover, a first communication pipe, and a second communication pipe, the first communication pipe is connected to the first sensor, The second communication tube is connected to the second sensor, the decoration cover includes a cable management slot, and the decoration cover is located between the center of the crankshaft and the axis of the rear rocker arm in the horizontal direction. And the second communication pipe extends through the cable management groove and is bounded by the cable management groove.