CN210166334U

CN210166334U - Two-wire tail gas sensor with high-stability chip for motorcycle

Info

Publication number: CN210166334U
Application number: CN201920791228.5U
Authority: CN
Inventors: 陈磊; 许春君; 宋强; 徐建涛
Original assignee: Zhejiang Landes Electronic Technology Co Ltd
Current assignee: Zhejiang Landes Electronic Technology Co Ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-03-20
Anticipated expiration: 2029-05-29

Abstract

The utility model provides a two-wire tail gas sensor for motorcycle with high stability chip, includes short sensor and pencil, short sensor includes the hexagonal base, hexagonal base middle part is outer hexagonal line, outer hexagonal line below is for being equipped with the screw thread, the hexagonal base is hollow structure, the exhaust gas cover is connected to hexagonal base below, the exhaust gas cover is for not having upper cover hollow cylinder structure, exhaust gas cover bottom and surface are equipped with a plurality of through-hole, seal ring has been cup jointed to hexagonal base lower extreme screw thread top outside, hexagonal base inside is fixed with the chip, the chip is slim type design, the inside diffusion barrier that is equipped with of chip, the chip is from up being fixed with pottery A, powder ring and pottery B in proper order down, pottery A, powder ring one, powder ring two and pottery B pass through compression fittings pressfitting to hexagonal base inside.

Description

Two-wire tail gas sensor with high-stability chip for motorcycle

Technical Field

The utility model relates to a sensor field, in particular to two-wire tail gas sensor for motorcycle with high stability chip.

Background

The tail gas sensor is used for measuring the information whether oxygen in exhaust gas after combustion of the engine is excessive, namely the oxygen content, converting the oxygen content into a voltage signal and transmitting the voltage signal to the engine computer, so that the engine can realize closed-loop control with the excess air factor as a target; the three-way catalytic converter is ensured to have the maximum conversion efficiency on three pollutants of Hydrocarbon (HC), carbon monoxide (CO) and nitrogen oxide (NOx) in the exhaust gas, and the conversion and purification of the emission pollutants are performed to the maximum extent. Meanwhile, the motorcycle industry has high requirements on cost control, and a tail gas detection solution with higher cost performance is required to cope with continuous tightening of emission regulations.

Therefore, a new exhaust gas sensor and a new exhaust gas chip are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an air current gets into smoothly, and the two-wire tail gas sensor for stable performance's motorcycle is through the mode that cancels the heating structure of traditional chip and keep its detection performance simultaneously, provides the tail gas detection solution of a high price/performance ratio for the motorcycle trade.

The utility model adopts the technical proposal that the two-line tail gas sensor with the high-stability chip for the motorcycle comprises a short sensor and a wire harness, wherein the middle part of the short sensor is a hexagonal base, a waste gas hood is welded below the hexagonal base, a chip is arranged inside the hexagonal base, one end of the chip extends into the cavity of the waste gas hood, the chip is not contacted with the waste gas hood, the chip is in a strip shape, an inner electrode is arranged inside the chip, four electrode contacts are arranged at the upper end of the chip, an outer electrode is arranged at the lower end of the chip, the outer electrode is connected with the electrode contacts through a conductive coating, a diffusion barrier channel is arranged at the upper end of the chip, barrier ceramics are arranged in the diffusion barrier channel, and the outer part of the chip is sequentially sleeved with a ceramic A, a powder ring I, a powder ring II and a ceramic B from bottom to top, and the ceramic A, the powder ring I, the powder ring II and the ceramic B are pressed into the hexagonal base through a pressing device.

Further, the hexagonal base is of a hollow structure, an external thread is arranged at the lower end of the hexagonal base, a sealing washer is sleeved outside the external thread at the lower end of the hexagonal base, and the sealing washer is in contact with the hexagonal base.

Furthermore, the waste gas hood is of a hollow cylinder structure without an upper cover, and a plurality of through holes are formed in the bottom end and the surface of the waste gas hood.

Further, short sensor top is equipped with the pencil, the pencil includes the shell, the shell is the hollow circular cylinder structure, the shell top is equipped with the rubber wire loop, the rubber wire loop is the cylinder structure, the rubber wire loop is opened there is a plurality of through-hole, install ventilative spare in the through-hole of rubber wire loop middle part, ventilative spare is cylinder type structure, the wire has been worn in the through-hole, cup joint ceramic support and terminal pottery on the wire in proper order, ceramic support and terminal pottery are inside all to be opened the through-hole that can pass the wire, contact terminal is connected to the wire bottom, the contact terminal top is equipped with the wire fixation clamp, the terminal of contact terminal connects the linking pottery of below, link up pottery with the electrode contact of chip upper end contacts.

Further, pottery A, powder ring sum pottery B are the cylinder structure, pottery A, powder ring one, powder ring two and pottery B middle part have the rectangle through-hole, the rectangle through-hole chip shape suits.

Further, the chip does not have a heating structure.

The utility model has the advantages that,

(1) through set up a plurality of bleeder vents on the exhaust hood upper shield wall for the product is in the use, and the air current gets into more smoothly, and the product can be sensitive handle, makes the product more stable, reliable.

(2) The whole size is reduced, so that the cost is greatly reduced.

(3) An air reference channel is cancelled, and a diffusion barrier channel is introduced to replace the original channel, so that the purposes of preventing tail gas pollution and high temperature suffocation and enhancing the chip strength and the working stability of the sensor are achieved.

(4) Meanwhile, a heating structure of a traditional chip is cancelled and the detection performance of the traditional chip is kept, so that a high-cost-performance tail gas detection solution is provided for the motorcycle industry.

Drawings

Fig. 1 is a schematic structural view of a two-wire tail gas sensor for a motorcycle with a high-stability chip according to the present invention.

Fig. 2 is an exploded view of the two-wire tail gas sensor for motorcycle with a high-stability chip according to the present invention.

Fig. 3 is a schematic structural diagram of a chip of the two-wire tail gas sensor for a motorcycle with a high-stability chip according to the present invention.

Fig. 4 is a cross-sectional view of a chip of the two-wire tail gas sensor for a motorcycle provided with a high stability chip of the present invention.

11-exhaust hood; 12-a sealing gasket; 13-a hexagonal base; 14-a chip; 141-an outer electrode; 142-an electrode contact; 143-conductive coating; 144-barrier ceramic; 145-diffusion barrier channels; 15-ceramic A; 16-pink ring I; 17-pink ring II; 18-ceramic B; 21-linked ceramics; 22-contact terminals; 23-a wire; 24-terminal ceramic; 25-a ceramic support; 26-a housing; 27-rubber wire loop; 28-gas permeable member.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the drawings and the specific embodiments.

As shown in figures 1-4, the utility model provides a two-wire tail gas sensor for motorcycle with high stability chip, including short sensor and pencil, short sensor middle part is hexagonal base (13), the welding has exhaust hood (11) below hexagonal base (13), the inside chip (14) that is equipped with of hexagonal base (13), chip (14) one end extends to in exhaust hood (11) cavity, chip (14) not with exhaust hood (11) contact, chip (14) are rectangular form, the inside inner electrode that is equipped with of chip (14), chip (14) upper end is equipped with four electrode contacts (142), chip (14) lower extreme is equipped with outer electrode (141), outer electrode (141) with electrode contact (142) pass through electrically conductive coating (143) and are connected, diffusion barrier passageway (145) has been seted up to chip (14) upper end, the diffusion barrier channel (145) is internally provided with barrier ceramics (144), an air reference channel is cancelled, the diffusion barrier channel is introduced to replace the original channel, the tail gas pollution can be prevented, the high-temperature suffocation can be prevented, the chip strength and the working stability of the sensor are enhanced, the outside of the chip (14) is sequentially sleeved with the ceramics A (15), the powder ring I (16), the powder ring II (17) and the ceramics B (18) from bottom to top, the ceramics A (15), the powder ring I (16), the powder ring II (17) and the ceramics B (18) are pressed into the hexagonal base (13) through a pressing device, the whole size of the chip is reduced, and the tail gas detection solution with high cost performance is provided for reducing the production cost.

Further, hexagonal base (13) are hollow structure, hexagonal base (13) lower extreme is equipped with the external screw thread, the external screw thread outside cover of hexagonal base (13) lower extreme is equipped with seal ring (12), seal ring (12) contact with hexagonal base (13).

Further, exhaust hood (11) are for not having upper cover hollow cylinder structure, exhaust hood (11) bottom and surface are equipped with a plurality of through-hole for in the product use, the air current gets into more smoothly, and the processing that the product can be sensitive, and the product is more reliable and more stable.

Further, be equipped with the pencil above the short sensor, the pencil includes shell (26), shell (26) are the hollow circular cylinder structure, shell (26) top is equipped with rubber wire loop (27), rubber wire loop (27) are the cylinder structure, rubber wire loop (27) are opened there is a plurality of through-hole, install ventilative piece (28) in the through-hole of rubber wire loop (27) middle part, ventilative piece (28) are the cylinder type structure, wire (23) have worn in the through-hole, cup joint ceramic support (25) and terminal pottery (24) on wire (23) in proper order, ceramic support (25) and terminal pottery (24) inside all open the through-hole that can pass wire (23), contact terminal (22) are connected to wire (23) bottom, contact terminal (22) top is equipped with the wire fixation clamp, the terminal of contact terminal (22) is connected linking pottery (21) of below, the adapter ceramic (21) is in contact with an electrode contact (142) at the upper end of the chip (14).

Further, pottery A (15), powder ring sum pottery B (18) are the cylinder structure, pottery A (15), powder ring one (16), powder ring two (17) and pottery B (18) middle part have the rectangle through-hole, the rectangle through-hole suits with chip (14) shape.

Further, the chip (14) does not have a heating structure, and the production cost is greatly reduced by eliminating the heating structure but maintaining the detection performance.

The installation principle is as follows: ceramic A, powder ring I, powder ring II and ceramic B are sequentially sleeved at a chip from bottom to top, then the ceramic A, the powder ring I, the powder ring II and the ceramic B are compressed to the open end of a hexagonal base through a pressing device such as a pressing air cylinder, then a wire is arranged inside a shell, the wire of a wire harness sequentially penetrates through a rubber wire ring, a ceramic support and terminal ceramic from top to bottom, one end of the wire is connected with a terminal at the terminal ceramic position, the terminal at the terminal ceramic position is inserted into connecting ceramic, an electrode end of the chip is inserted into the connecting ceramic so that the chip is contacted with the terminal, finally the shell and the hexagonal base are welded into a whole, and a sealing gasket and a welding waste gas hood are sleeved at a thread end of the hexagonal base.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The two-wire tail gas sensor with the high-stability chip for the motorcycle comprises a short sensor and a wire harness, wherein the middle of the short sensor is a hexagonal base (13), a waste gas hood (11) is welded below the hexagonal base (13), a chip (14) is arranged inside the hexagonal base (13), one end of the chip (14) extends into a cavity of the waste gas hood (11), the chip (14) is not contacted with the waste gas hood (11), the chip (14) is in a long strip shape, an inner electrode is arranged inside the chip (14), four electrode contacts (142) are arranged at the upper end of the chip (14), an outer electrode (141) is arranged at the lower end of the chip (14), the outer electrode (141) is connected with the electrode contacts (142) through a conductive coating (143), and a diffusion barrier channel (145) is arranged at the upper end of the chip (14), barrier ceramics (144) are arranged in the diffusion barrier channel (145), a ceramic A (15), a powder ring I (16), a powder ring II (17) and a ceramic B (18) are sequentially sleeved outside the chip (14) from bottom to top, and the ceramic A (15), the powder ring I (16), the powder ring II (17) and the ceramic B (18) are pressed into the hexagonal base (13) through a pressing device.

2. A two-wire exhaust sensor for motorcycle with high stability chip according to claim 1, wherein the hexagonal base (13) is a hollow structure, the lower end of the hexagonal base (13) is provided with an external thread, a sealing washer (12) is sleeved outside the external thread at the lower end of the hexagonal base (13), and the sealing washer (12) is in contact with the hexagonal base (13).

3. A two-wire exhaust gas sensor for motorcycle with high stability chip according to claim 1 wherein the exhaust gas hood (11) is a hollow cylinder structure without top cover, and the bottom end and surface of the exhaust gas hood (11) are provided with a plurality of through holes.

4. The two-wire tail gas sensor for the motorcycle with the high-stability chip according to claim 1, wherein a wire harness is arranged above the short sensor, the wire harness comprises a housing (26), the housing (26) is of a hollow cylindrical structure, a rubber wire loop (27) is arranged at the top end of the housing (26), the rubber wire loop (27) is of a cylindrical structure, a plurality of through holes are formed in the rubber wire loop (27), an air-permeable member (28) is installed in the through hole in the middle of the rubber wire loop (27), the air-permeable member (28) is of a cylindrical structure, a wire (23) penetrates through the through holes, a ceramic support (25) and a terminal ceramic (24) are sequentially sleeved on the wire (23), through holes capable of penetrating through the wire (23) are formed inside the ceramic support (25) and the terminal ceramic (24), and a contact terminal (22) is connected at the bottom end of the wire (23), the top end of the contact terminal (22) is provided with a wire fixing clamp, the terminal of the contact terminal (22) is connected with the lower connecting ceramic (21), and the connecting ceramic (21) is in contact with the electrode contact (142) at the upper end of the chip (14).

5. The two-wire tail gas sensor for the motorcycle with the high-stability chip as claimed in claim 1, wherein the ceramic A (15), the powder ring I (16), the powder ring II (17) and the ceramic B (18) are all cylindrical structures, and rectangular through holes are formed in the middle of the ceramic A (15), the powder ring I (16), the powder ring II (17) and the ceramic B (18), and are adapted to the shape of the chip (14).