CN103437874A - Oxygen sensor installation structure assembly of motorcycle engine - Google Patents
Oxygen sensor installation structure assembly of motorcycle engine Download PDFInfo
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- CN103437874A CN103437874A CN2013103699738A CN201310369973A CN103437874A CN 103437874 A CN103437874 A CN 103437874A CN 2013103699738 A CN2013103699738 A CN 2013103699738A CN 201310369973 A CN201310369973 A CN 201310369973A CN 103437874 A CN103437874 A CN 103437874A
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- cylinder body
- oxygen concentration
- concentration sensor
- protuberance
- installation structure
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Abstract
The invention discloses an oxygen sensor installation structure assembly of a motorcycle engine. The oxygen sensor installation structure assembly comprises a cylinder body and a protruding portion which is protruded from the cylinder body as seen from the axis direction of the cylinder body, a cam is arranged in the cylinder body, an air exhaust duct is formed in the protruding portion, an oxygen concentration sensor is arranged on the protruding portion, the oxygen concentration sensor comprises a body portion extending out of the protruding portion and a detection portion extended into the air exhaust duct, as seen from the axis of the cylinder body, the axis projection of the body portion of the oxygen concentration sensor is configured on the protruding portion in the mode that the axis projection tilts towards the axis projection of the cam, and the longer the body portion extends outwards relative to the protruding portion, the smaller the distance between the body portion and the cylinder body is. According to the oxygen sensor installation structure assembly of the motorcycle engine, the configuration mode that an oxygen concentration sensor extends towards the upper front direction from the air exhaust duct in the prior art is eliminated, the protruding amount of the oxygen concentration sensor towards the outside of the cylinder body is controlled, corresponding size reduction of the engine is facilitated, damage to the appearance of the engine is avoided, and close contact between the engine and a motorcycle frame and other parts and close contact between the engine and the ground are avoided.
Description
Technical field
The present invention relates to motorcycle, is the lambda sensor installation structure assembly of motorcycle engine specifically.
Background technique
Motorcycle is for obtaining high exhaust gas purification rate, reduce carbon monoxide in exhaust, the composition of hydrocarbon and oxynitrides, all need on the air outlet flue of motor, oxygen concentration sensor be installed, measure the oxygen content in the exhaust after engine combustion by oxygen concentration sensor, and the oxygen content signal is converted to voltage signal pass to computer in the engine, make motor can realize take the closed loop control that the excess air factor is target, guarantee the hydrocarbon in exhaust, the transformation efficiency of the maximum of carbon monoxide and oxynitrides etc., the conversion farthest discharged pollutants and purification.But the mounting structure of traditional oxygen concentration sensor is as described in the patent No. Japan Patent that is JP 2010-7645, oxygen concentration sensor is extended to front upper place from air outlet flue, make oxygen concentration sensor large to cylinder body foreign side overhang, this will inevitably increase the size of motor, the miniaturization and the compactness that are unfavorable for motor, simultaneously, the oxygen concentration sensor of evagination when assembling also easily and vehicle part mutually interfere, and for avoiding it to be subject to the impact of slungshot etc., special protector need to be set, this has also increased the complexity of engine structure and the motor overall dimensions has been formed to adverse effect, therefore, the mounting structure of tradition oxygen concentration sensor need further improvement.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of lambda sensor installation structure assembly of motorcycle engine, it has avoided the hurtful while of outward appearance, was conducive to the characteristics such as the miniaturization of motor and compactness.
The present invention solves the technological means that its technical problem adopts:
The lambda sensor installation structure assembly of motorcycle engine, comprise cylinder body and see from described cylinder body axial direction the protuberance that outwards protrudes from cylinder body, be provided with the cam that drives the valve tappet action in described cylinder body, be formed with air outlet flue in described protuberance, be provided with oxygen concentration sensor on protuberance, described oxygen concentration sensor comprises and stretches out the outer main part of protuberance and stretch to the detection unit in described air outlet flue, from described cylinder body axial direction, the axis projection of described oxygen concentration sensor main part is disposed on described protuberance in the mode tilted towards the camshaft line projection, the relative protuberance of described main part stretches out more outward the closer to described cylinder body.
As improvement of the technical scheme, detection unit and the main part of described oxygen concentration sensor coaxially arrange, and described detection unit extends more mode tilted configuration away from cylinder body more inwardly in the air outlet flue of described protuberance with relative protuberance.
As further improvement in the technical proposal, from described cylinder body axial direction, the small part that is projected to of described oxygen concentration sensor stretches out in described protuberance.
Further, on described cylinder body, be provided with cylinder cap, the height of described oxygen concentration sensor is not higher than the mating face of described cylinder block and cylinder cover.
Preferably, when vehicle is opened in the motorcycle side support in the Parking state, the main part of described oxygen concentration sensor is higher than described detection unit.
Further, on described cylinder body, be provided with spark plug, described protuberance and described spark plug are positioned on the not ipsilateral of cylinder body, and described oxygen concentration sensor is arranged on the side that described protuberance is contrary with spark plug.
Further, on the main part of described oxygen concentration sensor, lead to sensor conductor, described sensor conductor is configured in away from spark plug on the upper wall of described cylinder cap.
Further, described cylinder body axis is divided into the cylinder cap upper wall away from spark plug one territory, lateral areas and contiguous spark plug one territory, lateral areas, and described sensor conductor is disposed at this away from spark plug one territory, lateral areas.
Further, be provided with the groove for the described sensor conductor that connects up on the upper wall of described cylinder cap, a part of groove width of described groove is greater than the wire diameter of described sensor conductor, and another part groove width is equal to or less than the wire diameter of described sensor conductor.
The invention has the beneficial effects as follows: the present invention is disposed on protuberance in the mode tilted towards the camshaft line projection by the axis projection by the oxygen concentration sensor main part, the relative protuberance of main part stretches out more outward the closer to cylinder body, abandoned in conventional art by oxygen concentration sensor from air outlet flue to front upper place extended configuration mode, controlled the overhang of oxygen concentration sensor to cylinder body foreign side, be conducive to reducing of motor corresponding size, miniaturization and compactness to motor have promoting effect, avoiding the hurtful while of outward appearance, also can avoid the close contact with the vehicle parts such as vehicle frame and road surface, in addition, the configuration structure of the sensor conductor of the oxygen concentration sensor in the present invention, make the high-voltage conducting wires of sensor conductor away from spark plug, thereby can avoid the impact of the electromagnetic interference of ignition system generation, sensor conductor can not cause because of the impact that is subject to electromagnetic interference the oxygen concentration in exhaust to occur that erroneous judgement is disconnected, avoid the Exhaust Gas that may cause to worsen or drive bad, the simple and reasonable compactness of the present invention, implement convenient, cost is low.
The accompanying drawing explanation
Fig. 1 is the perspective view that the present invention obtains at cylinder body axis direction observation;
To be the present invention opening under the vehicle stop state that side supports Fig. 2, the structural representation of seeing from the air outlet flue side;
Fig. 3 be the present invention when the motorcycle driving state, the installation diagram of the oxygen concentration sensor of seeing from the air outlet flue side;
Fig. 4 is the structural representation of oxygen concentration sensor in the present invention.
Fig. 5 and Fig. 6 are the wiring diagrams of the sensor conductor of the oxygen concentration sensor that obtains from cylinder body axis direction observation.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further detailed explanation.
With reference to Fig. 1 ~ Fig. 6, the lambda sensor installation structure assembly of motorcycle engine of the present invention, it comprises cylinder body 1 and sees the protuberance 2 that outwards protrudes from cylinder body 1 from described cylinder body axial direction, wherein the cylinder body axial direction is referring to direction shown in label A in Fig. 5, and the label A ' in Fig. 2 means the cylinder body axis, be provided with the cam 3 that drives the valve tappet action in described cylinder body 1, be formed with air outlet flue 21 in described protuberance 2, protuberance 2 is connected with the outlet pipe of motorcycle, the air outlet flue 21 of waste gas in protuberance 2 that motor produces effluxes, be provided with oxygen concentration sensor 4 on described protuberance 2, known oxygen concentration sensor 4 comprises the main part 41 stretched out outside protuberance 2 and stretches to the detection unit 42 in described air outlet flue 21, detection unit 42 is stretched in air outlet flue 21, the direct impulse detection of the Exhaust Gas of high temperature section 42, make the sensing unit in detection unit 42 can be relatively easy to enter into the condition of high temperature, Exhaust Gas can enter into the exhaust detected state in early days, thereby the discarded discharge capacity that effectively suppresses Exhaust Gas, specifically shown in Figure 1, from described cylinder body axial direction, the axis projection B of the main part 41 of described oxygen concentration sensor 4 is disposed on described protuberance 2 in the mode tilted towards camshaft line projection C, the relative protuberance 2 of described main part 41 stretches out more outward the closer to described cylinder body 1, abandoned in conventional art by oxygen concentration sensor from air outlet flue to front upper place extended configuration mode, controlled the overhang of oxygen concentration sensor 4 to cylinder body 1 foreign side, be conducive to reducing of motor corresponding size, miniaturization and compactness to motor have promoting effect, avoiding the hurtful while of outward appearance, also can avoid the close contact with the vehicle parts such as vehicle frame and road surface.
In the present embodiment, the detection unit of described oxygen concentration sensor 4 42 coaxially arranges with main part 41, and described detection unit 42 extends more mode tilted configuration away from cylinder body 1 more inwardly in the air outlet flue 21 of described protuberance 2 with relative protuberance 2.
In the present embodiment, from described cylinder body axial direction, preferred described oxygen concentration sensor 4 be projected to the described protuberance 2 of stretching out in of small part, this configuration mode makes oxygen concentration sensor extend in the mode tilted to the motorcycle width direction, be conducive to reduce oxygen concentration sensor 4 and be configured in the height on protuberance 2, further reduce the corresponding height size of motor.
For known internal combustion engine type motor, be provided with cylinder cap 5 on described cylinder body 1, the height of described oxygen concentration sensor 4 is the mating face D with cylinder cap 5 higher than described cylinder body 1 not, therefore when assembled engines, can effectively avoid 5 pairs of oxygen concentration sensors 4 of cylinder cap to cause the possibility of scuffing, and be conducive to reduce because not noting making the vehicle parts such as vehicle frame oxygen concentration sensor to be caused to the possibility of scuffing to time on car body at the engine assembly that oxygen concentration sensor will be housed.
The detection unit 42 of known oxygen concentration sensor 4 consists of the safety cover 44 of sensing unit 43 and protection sensing unit 43, wherein on safety cover 44, be provided with protection hole 45, for avoiding when the Parking state, the airborne aqueous vapor condensed water that condensation forms on safety cover 44 enters into safety cover 44 and contacts with sensing unit 43, cause the sensing unit cracking, when when vehicle is opened in the motorcycle side support in the Parking state, preferably make the main part 41 of described oxygen concentration sensor 4 higher than described detection unit 42, specifically referring to Fig. 2, the main part 41 of oxygen concentration sensor 4 configures in the acclivitous mode of relative level line H, so can make condensed water can not flow in safety cover 44 through protection hole 45 under Action of Gravity Field.
Specifically referring to Fig. 5 and Fig. 6, be provided with spark plug 6 on described cylinder body 1, described protuberance 2 is positioned on the not ipsilateral of cylinder body 1 with described spark plug 6, described oxygen concentration sensor 4 is arranged on the side that described protuberance 2 is contrary with spark plug 6, make oxygen concentration sensor 4 away from spark plug 6 configurations, lead to sensor conductor 7 on the main part 41 of oxygen concentration sensor 4, described sensor conductor 7 is configured on the upper wall of described cylinder cap 5 away from spark plug 6, so can make the high-voltage conducting wires 61 of sensor conductor 7 away from spark plug 6, thereby can avoid the impact of the electromagnetic interference of ignition system generation, sensor conductor 7 can not cause because of the impact that is subject to electromagnetic interference the oxygen concentration in exhaust to occur that erroneous judgement is disconnected, avoid the Exhaust Gas that may cause worsen or drive bad.
Specifically referring to Fig. 6, described cylinder body axis A ' is divided into cylinder cap 5 upper walls away from spark plug one territory, lateral areas E and contiguous spark plug one territory, lateral areas F, and the dotted line G that crosses cylinder body axis A ' that regional E and F be take in Fig. 6 is separatrix; In the present embodiment, preferably described sensor conductor 7 is disposed to this away from spark plug one territory, lateral areas F, makes sensor conductor 7 further from spark plug 6 and corresponding high-voltage conducting wires 61 thereof.
Fixing for sensor conductor 7 on cylinder cap 5, can adopt following mounting structure: be provided with the groove 51 for the described sensor conductor 7 that connects up on the upper wall of described cylinder cap 5, a part of groove width of described groove 51 is greater than the wire diameter of described sensor conductor 7, another part groove width is equal to or less than the wire diameter of described sensor conductor 7, groove width is equal to or less than the part of the wire diameter of sensor conductor 7 can process 1 to 2, thereby do not need the sleeve pipe with guardwire, more do not need to append the part of fixing cord, can reduce costs, and the dismounting of sensor conductor 7 is also easy, conveniently sensor conductor 7 is routed on cylinder cap 5.
The above, be better embodiment of the present invention, but the present invention is not limited to above-described embodiment, as long as it reaches technique effect of the present invention with any same or similar means, within all should falling into protection scope of the present invention.
Claims (9)
1. the lambda sensor installation structure assembly of motorcycle engine, comprise cylinder body and see from described cylinder body axial direction the protuberance that outwards protrudes from cylinder body, be provided with the cam that drives the valve tappet action in described cylinder body, be formed with air outlet flue in described protuberance, be provided with oxygen concentration sensor on protuberance, described oxygen concentration sensor comprises and stretches out the outer main part of protuberance and stretch to the detection unit in described air outlet flue, it is characterized in that: from described cylinder body axial direction, the axis projection of described oxygen concentration sensor main part is disposed on described protuberance in the mode tilted towards the camshaft line projection, the relative protuberance of described main part stretches out more outward the closer to described cylinder body.
2. the lambda sensor installation structure assembly of motorcycle engine according to claim 1, it is characterized in that: detection unit and the main part of described oxygen concentration sensor coaxially arrange, and described detection unit extends more mode tilted configuration away from cylinder body more inwardly in the air outlet flue of described protuberance with relative protuberance.
3. the lambda sensor installation structure assembly of motorcycle engine according to claim 1 and 2, it is characterized in that: from described cylinder body axial direction, the small part that is projected to of described oxygen concentration sensor stretches out in described protuberance.
4. the lambda sensor installation structure assembly of motorcycle engine according to claim 3 is characterized in that: be provided with cylinder cap on described cylinder body, the height of described oxygen concentration sensor is not higher than the mating face of described cylinder block and cylinder cover.
5. the lambda sensor installation structure assembly of motorcycle engine according to claim 4 is characterized in that: at motorcycle side, support while opening vehicle in the Parking state, the main part of described oxygen concentration sensor is higher than described detection unit.
6. the lambda sensor installation structure assembly of motorcycle engine according to claim 5, it is characterized in that: on described cylinder body, be provided with spark plug, described protuberance and described spark plug are positioned on the not ipsilateral of cylinder body, and described oxygen concentration sensor is arranged on the side that described protuberance is contrary with spark plug.
7. the lambda sensor installation structure assembly of motorcycle engine according to claim 6, it is characterized in that: lead to sensor conductor on the main part of described oxygen concentration sensor, described sensor conductor is configured in away from spark plug on the upper wall of described cylinder cap.
8. the lambda sensor installation structure assembly of motorcycle engine according to claim 7, it is characterized in that: described cylinder body axis is divided into the cylinder cap upper wall away from spark plug one territory, lateral areas and contiguous spark plug one territory, lateral areas, and described sensor conductor is disposed at this away from spark plug one territory, lateral areas.
9. the lambda sensor installation structure assembly of motorcycle engine according to claim 8, it is characterized in that: be provided with the groove for the described sensor conductor that connects up on the upper wall of described cylinder cap, a part of groove width of described groove is greater than the wire diameter of described sensor conductor, and another part groove width is equal to or less than the wire diameter of described sensor conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103699738A CN103437874A (en) | 2013-08-22 | 2013-08-22 | Oxygen sensor installation structure assembly of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103699738A CN103437874A (en) | 2013-08-22 | 2013-08-22 | Oxygen sensor installation structure assembly of motorcycle engine |
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| Publication Number | Publication Date |
|---|---|
| CN103437874A true CN103437874A (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013103699738A Pending CN103437874A (en) | 2013-08-22 | 2013-08-22 | Oxygen sensor installation structure assembly of motorcycle engine |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011064193A (en) * | 2009-08-21 | 2011-03-31 | Yamaha Motor Co Ltd | Engine and saddle type vehicle equipped therewith |
| JP2011157891A (en) * | 2010-02-02 | 2011-08-18 | Suzuki Motor Corp | Structure for attaching exhaust gas sensor in motorcycle |
| CN103133110A (en) * | 2011-11-25 | 2013-06-05 | 本田技研工业株式会社 | Exhaust apparatus for internal combustion engine |
| CN203452888U (en) * | 2013-08-22 | 2014-02-26 | 江门市大长江集团有限公司 | Oxygen sensor installation structure assembly for motorcycle engine |
-
2013
- 2013-08-22 CN CN2013103699738A patent/CN103437874A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011064193A (en) * | 2009-08-21 | 2011-03-31 | Yamaha Motor Co Ltd | Engine and saddle type vehicle equipped therewith |
| JP2011157891A (en) * | 2010-02-02 | 2011-08-18 | Suzuki Motor Corp | Structure for attaching exhaust gas sensor in motorcycle |
| CN103133110A (en) * | 2011-11-25 | 2013-06-05 | 本田技研工业株式会社 | Exhaust apparatus for internal combustion engine |
| CN203452888U (en) * | 2013-08-22 | 2014-02-26 | 江门市大长江集团有限公司 | Oxygen sensor installation structure assembly for motorcycle engine |
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Application publication date: 20131211 |