CN1792700A - Mounting structure of oxygen concentration sensor - Google Patents
Mounting structure of oxygen concentration sensor Download PDFInfo
- Publication number
- CN1792700A CN1792700A CNA2005101316905A CN200510131690A CN1792700A CN 1792700 A CN1792700 A CN 1792700A CN A2005101316905 A CNA2005101316905 A CN A2005101316905A CN 200510131690 A CN200510131690 A CN 200510131690A CN 1792700 A CN1792700 A CN 1792700A
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- Prior art keywords
- oxygen concentration
- concentration sensor
- mounting structure
- engine
- exhaust
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Measuring Oxygen Concentration In Cells (AREA)
- Exhaust Silencers (AREA)
Abstract
The invnetion discloses a mounting structure for an oxygen concentration sensor which can enhance a lay-out property and reduce a cost. An oxygen concentration sensor (150) is attached to a straight pipe part (51A) of an exhaust manifold (51C) attached to an exhaust outlet (110A) provided adjacently to an exhaust port of an engine (110), diagonally from an upstream of an exhaust gas toward a downstream, when arranging in the engine (110) the heaterless type oxygen concentration sensor (150) for detecting an oxygen concentration in exhaust of the engine (110) provided with a combustion chamber, an intake passage adjacent to the combustion chamber, and an exhaust passage.
Description
Technical field
The present invention relates to a kind of mounting structure of oxygen concentration sensor, particularly about the mounting structure of the oxygen concentration sensor of the oxygen concentration of the engine exhaust gas that is used for detecting two-wheeled motor vehicle.
Background technology
Usually, in mobile engine, from the precision of raising fuel control, the perhaps purification of emission gases, viewpoints such as low oil consumption are set out, and the feed system that acts as a fuel has proposed to adopt with Fuel Injection Device to substitute carburettor (for example, with reference to patent documentation 1).And, in recent years, in two-wheeled motor vehicle, also propose to adopt Fuel Injection Device to substitute carburettor.
Mobile engine, its design makes fuel burn efficiently with control as much as possible, but change condition according to ambient temperature or Air mixing ratio etc., burning can not be in perfect condition, so in the emission gases, comprise deletrious carbonic oxide (CO) and oxides of nitrogen (NOx), not Ran hydro-carbon (HC).
Therefore, in existing mobile engine, proposed, the air that adopts the zirconic oxygen concentration sensor that uses stabilization and the ratio (air/fuel ratio of fuel; A/F) accuracy control is put in the first place, control by carrying out inrush of air path and mixing, time of ignition control of being undertaken by electron steering etc., thereby the carbonic oxide in the reduction emission gases (CO), oxides of nitrogen (NOx) or the hydro-carbon (HC) that does not fire make it discharge as harmless emission gas.
Flat 6-323187 number public Reported of patent documentation 1 Te Open
; use the oxygen concentration sensor of stabilizing zirconia; contained oxygen in emission gases; the electronics that receives in electrode becomes oxonium ion, and this oxonium ion sees through zirconia layer; ejected electron; become oxygen and when being detained, to result from the interelectrode magnitude of current, as detecting with the proportional magnitude of current of oxygen concentration with the amount of the redox reaction of oxygen is proportional.
Use the oxygen concentration sensor of this stabilizing zirconia to have following problem,, hinder moving of oxonium ion, thereby cause the magnitude of current to diminish because internal resistance becomes very big at low temperatures.
Therefore, in the past, as oxygen concentration sensor, use be to be provided with the temperature booster that is used to heat, have the oxygen concentration sensor that has temperature booster of main body of the oxygen concentration sensor of stabilizing zirconia layer.
But the oxygen concentration sensor that has temperature booster, its shape become big, and be also poor to the designability that is installed on the two-wheeled motor vehicle, the problem that exists cost to increase simultaneously.
Summary of the invention
Therefore, the objective of the invention is to, a kind of mounting structure that can realize improving the oxygen concentration sensor of designability and cost-cutting is provided.
In order to address the above problem, a kind of mounting structure of oxygen concentration sensor, the oxygen concentration sensor that will be used for the oxygen concentration of detection of engine emission gases, be configured in the described driving engine, it is characterized in that, described oxygen concentration sensor is configured near the described exhaust port of dontake pipe of the exhaust port that is installed on described driving engine.
In view of the above, oxygen concentration sensor by hi-heat emission gases, can promptly arrive and is suitable for the temperature that oxygen concentration detects most, thereby can be rapidly and carry out oxygen concentration determination accurately best.
In the case, described oxygen concentration sensor has oxygen detection side and distribution side, also described distribution side can be disposed at the top side of described driving engine.
In addition, described dontake pipe, part has curve therebetween, and described oxygen concentration sensor also can be disposed at the inboard of described curve.
In addition, described oxygen concentration sensor, can be used as does not have the heating oxygen concentration sensor and constitutes yet.
According to the present invention, because with oxygen concentration sensor, be configured near exhaust port dontake pipe, that the temperature of emission gases is high relatively of the exhaust port that is installed on driving engine, so when engine drive, oxygen concentration sensor can arrive the activation temperature zone rapidly, can be rapidly and detect oxygen concentration in the emission gases exactly.
Description of drawings
Fig. 1 is the left side view of the two-wheeled motor vehicle of embodiment.
Fig. 2 is the rear portion enlarged side view of the two-wheeled motor vehicle of embodiment.
Fig. 3 is the rear portion amplification plan view of the two-wheeled motor vehicle of embodiment.
Fig. 4 is the lateral plan around the power unit.
Fig. 5 is the section-drawing of oxygen concentration sensor.
Fig. 6 is the axial direct-view figure of section of the A-A of Fig. 5.
Fig. 7 is the instruction diagram of the installing condition of oxygen concentration sensor.
Fig. 8 is the cross sectional illustration figure of the installing condition of oxygen concentration sensor.
Among the figure: the 10-two-wheeled motor vehicle, the 11-vehicle body frames, 16-swinging power unit, the 21-storage box, the 22-seat, the 51A-straight sections, the 51B-curve, the 51C-dontake pipe, the 51D-freeing pipe, the 51E-installation portion, 110-combustion engine (driving engine), the 110A-exhausr port, the 111-crankcase, the 112-cylinder band, the 113-cylinder, the 115-cylinder head, the 116-combustion chamber, the 121-air inlet valve, the 122-intake channel, the upper reaches end of 122a-intake channel, the 128-coolant channels, the 130-air system, the 131-air filter, the 132-conduit, 133-solar term body, the 134-air inlet pipe, the 135-flow regulating valve, the 140-Fuel Injection Device, the 150-oxygen concentration sensor, the 151-carriage, the 151A-flange part, the 152-tubular zirconium-oxide, the 153-protective cover, the 154-urceolus, the 155-inner core, the 156-filter, the 157-contact plate, the 158-insulating bushing, the 159-conductor part, the 160-shell, the 161-output signal line, 171-belt buncher
The specific embodiment
Below, with reference to accompanying drawing the embodiment that the present invention is suitable for is described.
In the following description, " preceding ", " back ", " left side ", " right side ", " on ", D score follows the direction of visual lines from the driver, being expressed as Fr is that front side, Rr are that rear side, L are that left side, R are the right side.
Fig. 1 is the left surface figure of the two-wheeled motor vehicle of embodiment.
Two-wheeled motor vehicle 10 is steamboat type vehicles, and it has: vehicle body frames 11; Front fork 13, it is installed on the head pipe 12 of vehicle body frames 11; Front-wheel 14, it is installed on the front fork 13; Handle-bar 15, it is attached on the front fork 13; Swinging power unit 16, it is installed in the upper back of vehicle body frames 11; Trailing wheel 17, it is installed in the rear portion of power unit 16; Rear suspension 18, it hangs on power unit 16 upper back of vehicle body frames 11; Storage box 21, it is installed on the upper back of vehicle body frames 11; Seat 22, it is installed in the top of storage box; Fuel tank 23, it is installed in the upper back of the vehicle body frames 11 at storage box 21 rears; Main body cover 30, it covers vehicle body frames 11.
Two-wheeled motor vehicle 10 also has front suspension 41, head lamp 42, instrument 43, front fender apron 44, handle-bar cover (handle cover) 45, main support 46 and rear mudguard 47.
Fig. 2 is the rear portion amplification profile of the two-wheeled motor vehicle of embodiment.
Be disposed at the power unit 16 of the below at storage box 21 and seat 22, have: be disposed at anterior driving engine 110; Be disposed at the buncher 171 at rear portion.Driving engine (combustion engine) 110, as cylinder is constituted at the single cylinder 4 circulated water-cooled driving engines that dispose to vehicle body the place ahead cardinal principle level, buncher 171 constitutes as the belt change-speed box.
In Fig. 2, air filter 131 is installed in the left side side of trailing wheel 17 and the upper back of power unit 16.
In addition, be located in connection on the exhausr port 110A of exhaust port of driving engine 110, be connected with driving engine with freeing pipe 51 and noise silencer 52.
Driving engine has with freeing pipe 51: dontake pipe 51C, it has straight sections 51A and curve 51B, and be connected the exhausr port 110A that is located at exhaust port and be connected; Freeing pipe 51D, it is connected on the dontake pipe 51C.
Fig. 3 is the rear portion amplification view of the two-wheeled motor vehicle of embodiment.
In Fig. 3,, be integrally formed with driving engine radiator 53 on the right side of power unit 16.
In addition, subframe 80 has: about the storage box of rise with bracing frame 81,81; The binding stay 82 of connection storage box between the bracing frame 81,81.And,, be provided with light-up plug 54 in the left side side of cylinder cover 115.
Fig. 4 is the lateral plan around the power unit.
The air system 130 of driving engine 110 as shown in Figure 4, has: air filter 131; Conduit (connection pipe) 132, it is connected in the outlet of air filter 131; Tb 133, it is connected in the dirty end of conduit 132; Air inlet pipe 134, it is connected in the dirty end of tb 133; Intake channel 122, it is connected in the dirty end of air inlet pipe 134.
In this air system 130, air filter 131, conduit 132, tb 133 and air inlet pipe 134 forwards with the state of approximate horizontal, are disposed at the top of driving engine 110 from the vehicle body rear, and the dirty end of air inlet pipe 134 is connected with the intake channel 122 of driving engine 110.
Upper side at cylinder head 115 disposes Fuel Injection Device 140.Fuel Injection Device 140 is according to the injection signal that is calculated by not shown electronic control unit and the fuel injector of burner oil.For example, has the electromagnetic type nozzle.Fuel inlet portion in the upper end of this Fuel Injection Device 140, the chimeric fuel feed pipe 142 that is equipped with joins with fuel hose 146 through fuel feed pipe 142 thus.
In the lower side of cylinder head 115, be provided with the exhausr port 110A that is connected at above-mentioned exhaust port, the curve 51A of the dontake pipe 51C that joins at the exhausr port 110A that is connected at exhaust port therewith detects the oxygen concentration in the emission gases of driving engine 110.In not shown electronic control unit, be provided with the oxygen concentration sensor 150 that is used to carry out optimal air-fuel ratio control.
Here, the formation to oxygen concentration sensor 150 describes.
Fig. 5 is the section-drawing of oxygen concentration sensor.In addition, Fig. 6 is that the A-A sectional axis of Fig. 5 is schemed to direct-view.
Pars intermedia in the periphery of carriage 151 is provided with flange part 151A, at the leading section of carriage 151, is formed with the threaded portion 151B that is used to install.
In carriage 151 in-to-in front,, has the tubular zirconium-oxide that is coated with platinum 152 as electrode in the part of surfaces externally and internally.At this, tubular zirconium-oxide is for example with zirconia (ZrO
2) form for main component.Around the tubular zirconium-oxide 152, cover by protective cover 153 with a plurality of hole 154A.This protective cover 153, the duplex of formation urceolus 154 and inner core 155 between urceolus 154 and inner core 155, is provided with the filter 156 that is used to catch objectionable impurities.At the base end part of tubular zirconium-oxide 152, be provided with metal contact plate 157.
The face side of this contact plate 157 (among Fig. 5, the left side) is joined with the leading section of the insulating bushing 158 of the ceramic of the base end part that is entrenched in carriage 151, is electrically connected with electrooxidation zirconium pipe 152.
On the other hand, the inner face side (among Fig. 5, the right side) at contact plate 157 is electrically connected with conductor part 159, and insulating bushing 158 and conductor part 159 are covered by the shell 160 that is embedded on the carriage 151.And,, output signal line 161 is derived from an end of shell 160.
In more detail, since oxonium ion from the high atmospheric side of oxygen partial pressure to the emission gases side shifting, so produce electro-motive force.This electro-motive force increases with concentration difference.
Therefore, based on the detection signal that exports output signal line 161 according to this electro-motive force to,, air/fuel ratio is carried out optimal control corresponding to by the oxygen concentration in the detected emission gases of not shown electronic control unit.
However, constitute the tubular zirconium-oxide 152 of oxygen concentration sensor 150,, hinder moving of oxonium ion, electro-motive force is diminished, so the error at measurment change is big because internal resistance becomes very big at low temperatures.Perhaps, mensuration itself can't be carried out.
Next the mounting structure to oxygen concentration sensor describes.
Fig. 7 is the instruction diagram of the installing condition of oxygen concentration sensor.
As shown in Figure 7, oxygen concentration sensor 150 is screwed among the installation portion 51E of the straight sections 51A that is located at dontake pipe 51C.At this moment, the flange part 151A of the carriage 151 of oxygen concentration sensor 150 joins with the end face of installation portion 51E.
Therefore, because oxygen concentration sensor 150, be installed in the exhaust port that is connected at dontake pipe 51C exhausr port 110A near, so can use the oxygen concentration sensor of no hot type as oxygen concentration sensor 150, can heat tubular zirconium-oxide 152 hastily by hi-heat emission gases, can measure rapidly and accurately.
Be no hot type because oxygen concentration sensor 150 uses in addition, so can realize cost-cutting, so and because there is not built-in temperature booster can realize the miniaturization of size of oxygen concentration sensor, further compactedness can be realized, the two-wheeled motor vehicle that is subjected to designability restriction etc. can be applicable to.And,,, can also realize the reduction of cost so control is simplified because there is no need to be provided with the control circuit that warm-up control is used.
Fig. 8 is the section-drawing of the installing condition of explanation oxygen concentration sensor.
As shown in Figure 8, installation portion 51E welding is located at the straight sections 51A of dontake pipe 51C, on the side face, is provided with the threaded portion 51F (minus thread) corresponding to the threaded portion 151B (plus thread) of oxygen concentration sensor 150 within it.
At this moment, installation portion 51E is welded on the straight sections 51A of dontake pipe 51C obliquely, oxygen concentration sensor 150, under installing condition, its protective cover 153 sides (oxygen detection side), from the upstream side of emission gases to downstream side (Fig. 8, the direction of arrow X), tilt to insert in the dontake pipe 51C.That is, output signal line 161 sides (distribution side) of oxygen concentration sensor 150 are positioned at cylinder head 115 sides of driving engine 110.
Therefore, because oxygen concentration sensor 150, be installed in the straight sections 51A of the few dontake pipe 51C of the mobile upset of emission gases, and, under installing condition, protective cover 153 sides (oxygen detection side), from the upstream side of emission gases to downstream side (Fig. 8, the direction of arrow X), tilt to insert in the dontake pipe 51C, so can reduce the resistance to flow of the emission gases in the dontake pipe 51C, not hinder flowing of emission gases, thereby can carry out oxygen concentration determination accurately.
In addition, if with the oxygen concentration sensor 150 vertical outer peripheral face heating situations that are installed on dontake pipe 51C are compared, can reduce the overhang to the side of two-wheeled motor vehicle 10, it is easy that the processing of output signal line 161 also becomes, and can cut down the space is set, particularly obtain effect being provided with in the limited vehicle in space of two-wheeled motor vehicle (comprising motor-tricycle etc.) etc.
As described above, according to present embodiment, even used the not oxygen concentration sensor of hot type as oxygen concentration sensor, also can make tubular zirconium-oxide form the temperature of the regulation that is suitable for measuring most by emission gases, also be not limited to the oxygen concentration sensor that uses no hot type, the detection of oxygen concentration begins to accelerate.
In addition, because used the oxygen concentration sensor of no hot type, so can realize cost reduces, and reduce not that the part of internal heater can realize the miniaturization of size of oxygen concentration sensor, thereby also can be applicable to comparing and pursue in the two-wheeled motor vehicle that compactedness is subjected to the designability restriction with four-wheeled.Also have,,, can also realize the reduction of cost so control is simplified because there is no need to be provided with the control circuit that warm-up control is used.
In the above description, the straight sections 51A of the dontake pipe 51C that the exhausr port 110A of exhaust port joins is located at and is connected to oxygen concentration sensor 150, be located on the exhausr port 110A that is connected at exhaust port but also can constitute.
Claims (4)
1, a kind of mounting structure of oxygen concentration sensor is used for being used for detecting in driving engine configuration the oxygen concentration sensor of oxygen concentration of the emission gases of described driving engine, it is characterized in that,
Described oxygen concentration sensor, be configured in the dontake pipe that is installed on described exhaust opening of engine described exhausr port near.
2, the mounting structure of oxygen concentration according to claim 1 is characterized in that,
Described oxygen concentration sensor has the oxygen detection side,
Described oxygen detection side, from the upstream side of described emission gases in dirty inclination tiltedly is inserted into described dontake pipe.
3, according to the mounting structure of claim 1 or the described oxygen concentration sensor of claim 2, it is characterized in that,
Described dontake pipe has the straight sections that is positioned at described exhaust side, and is connected the curve that is located at straight sections,
Described oxygen concentration sensor is located at described straight sections.
4, according to the mounting structure of claim 1 each described oxygen concentration sensor to the claim 3, it is characterized in that,
Described oxygen concentration sensor does not constitute as there being the heating oxygen concentration sensor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004367474A JP4477481B2 (en) | 2004-12-20 | 2004-12-20 | Oxygen concentration sensor mounting structure |
| JP2004367474 | 2004-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1792700A true CN1792700A (en) | 2006-06-28 |
Family
ID=36671845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101316905A Pending CN1792700A (en) | 2004-12-20 | 2005-12-16 | Mounting structure of oxygen concentration sensor |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4477481B2 (en) |
| CN (1) | CN1792700A (en) |
| BR (1) | BRPI0505598B1 (en) |
| TW (1) | TWI286181B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102465750A (en) * | 2010-11-18 | 2012-05-23 | 铃木株式会社 | Mounting structure of component to exhaust pipe |
| CN102844552A (en) * | 2010-02-02 | 2012-12-26 | 铃木株式会社 | Structure for attaching exhaust gas sensor in motorcycle |
| CN110131022A (en) * | 2018-02-09 | 2019-08-16 | 本田技研工业株式会社 | Saddle-ride type vehicle |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008026237A (en) * | 2006-07-24 | 2008-02-07 | Toyota Motor Corp | Attachment structure of gas sensor |
| JP2008063977A (en) | 2006-09-05 | 2008-03-21 | Yamaha Motor Co Ltd | Motorcycle |
| JP4826458B2 (en) * | 2006-12-11 | 2011-11-30 | 株式会社デンソー | Gas sensor mounting structure |
| JP2010234949A (en) * | 2009-03-31 | 2010-10-21 | Keihin Corp | Oxygen concentration sensor mounting structure |
| JP2011203131A (en) * | 2010-03-25 | 2011-10-13 | Keihin Corp | Oxygen content sensor input device |
| JP2011208586A (en) * | 2010-03-30 | 2011-10-20 | Toyota Motor Corp | Exhaust manifold |
| JP5585213B2 (en) * | 2010-05-28 | 2014-09-10 | スズキ株式会社 | Exhaust gas passage structure of internal combustion engine |
| TWI383093B (en) * | 2010-07-13 | 2013-01-21 | Sanyang Industry Co Ltd | Configuration Structure of Oxygen Sensor for Internal Combustion Engine |
| JP2012251794A (en) | 2011-05-31 | 2012-12-20 | Yamaha Motor Co Ltd | Activity determination system of oxygen sensor |
| JP2012251795A (en) * | 2011-05-31 | 2012-12-20 | Yamaha Motor Co Ltd | Activity determination system of oxygen sensor |
| JP5508462B2 (en) * | 2011-06-14 | 2014-05-28 | 日本特殊陶業株式会社 | Gas sensor |
| JP5952246B2 (en) * | 2013-09-30 | 2016-07-13 | 本田技研工業株式会社 | Exhaust gas sensor protection structure for motorcycles |
| JP2019002301A (en) * | 2017-06-13 | 2019-01-10 | スズキ株式会社 | Exhaust device |
-
2004
- 2004-12-20 JP JP2004367474A patent/JP4477481B2/en not_active Expired - Fee Related
-
2005
- 2005-11-21 TW TW094140824A patent/TWI286181B/en not_active IP Right Cessation
- 2005-12-16 BR BRPI0505598A patent/BRPI0505598B1/en active IP Right Grant
- 2005-12-16 CN CNA2005101316905A patent/CN1792700A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102844552A (en) * | 2010-02-02 | 2012-12-26 | 铃木株式会社 | Structure for attaching exhaust gas sensor in motorcycle |
| CN102844552B (en) * | 2010-02-02 | 2015-05-27 | 铃木株式会社 | Structure for attaching exhaust gas sensor in motorcycle |
| CN102465750A (en) * | 2010-11-18 | 2012-05-23 | 铃木株式会社 | Mounting structure of component to exhaust pipe |
| US8752866B2 (en) | 2010-11-18 | 2014-06-17 | Suzuki Motor Corporation | Mounting structure of component to exhaust pipe |
| CN102465750B (en) * | 2010-11-18 | 2015-09-30 | 铃木株式会社 | To the mounting structure of the parts that outlet pipe is installed |
| CN110131022A (en) * | 2018-02-09 | 2019-08-16 | 本田技研工业株式会社 | Saddle-ride type vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI286181B (en) | 2007-09-01 |
| BRPI0505598B1 (en) | 2016-12-06 |
| TW200624658A (en) | 2006-07-16 |
| JP2006170938A (en) | 2006-06-29 |
| JP4477481B2 (en) | 2010-06-09 |
| BRPI0505598A (en) | 2006-09-19 |
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Open date: 20060628 |