CN201269120Y - Lift-variable mechanism oilway configuration of miniature internal combustion engine - Google Patents
Lift-variable mechanism oilway configuration of miniature internal combustion engine Download PDFInfo
- Publication number
- CN201269120Y CN201269120Y CNU2008201402929U CN200820140292U CN201269120Y CN 201269120 Y CN201269120 Y CN 201269120Y CN U2008201402929 U CNU2008201402929 U CN U2008201402929U CN 200820140292 U CN200820140292 U CN 200820140292U CN 201269120 Y CN201269120 Y CN 201269120Y
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- China
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- oil circuit
- rocker arm
- solenoid valve
- pivot
- oil
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Abstract
The utility model relates to oil path configuration of a variable delivery lift mechanism of a small-sized internal-combustion engine, comprising a first rocker arm, a second rocker arm, a pivot shaft and an electromagnetic valve. The pivot shaft is provided with the first rocker arm and the second rocker arm which are mutually adjacent. The main technical key point is that an electromagnetic valve is assembled on a cylinder head and adjacent to the second rocker arm so as to achieve the shortest oil path configuration. Controlled by the electromagnetic valve, oil pressure directly enters a pivot oil path inside the pivot shaft from the electromagnetic valve and then enters an oil pressure chamber by a containing-chamber oil path inside the first rocker arm so as to push a combined block and lead the first rocker arm and the second rocker arm to be combined; or the oil pressure flows out from the oil pressure chamber to the electromagnetic valve by the pivot oil path so as to lead the combined block to revert and lead the first rocker arm and the second rocker arm to be separated. The oil path configuration improves the switching efficiency of the combined block by the shortest oil path, leads the combined block to more quickly and truly to cause the first rocker arm and the second rocker arm to be combined or separated, and overcomes the problem that the switching speed of the known variable delivery lift mechanism can not response rapidly. In addition, the oil path configuration can facilitate the disassembly of the electromagnetic valve and the cleaning of the oil path, and reduces the cost.
Description
Technical field
The utility model relates to a kind of oil circuit configuration, refers to a kind of variable lift of compact internal combustion engine mechanism oil circuit configuration that is applicable to especially, gets so that the oil pressure path is a beeline.
Background technique
See also Fig. 1, it is the variable lift mechanism oil circuit configuration of known internal-combustion engine 9, and as shown in the figure, a solenoid valve 92 is arranged at a cylinder head 90 tops, and between cylinder 97,98.Wherein, oil pressure inlet oil circuit 91, its oil pressure with the outside directly is directed in solenoid valve 92, via a solenoid valve oil circuit 920 oil pressure is imported cylinder head oil circuit 99, enter each cylinder 97,98 more respectively, 100,101 variable lift mechanism oil circuit 93,94,95,96, promote each cylinder 97 with oil pressure, 98,100,101 variable lift mechanism, the inlet and outlet valve of different lifts switches with in response to the high low-speed running of engine the time.
As shown in Figure 1, be arranged at the solenoid valve 92 on the cylinder head 90, it is because of being arranged at cylinder 97, between 98, directly influence the design of cylinder 97,98 its air inlet runners, and for making air inlet runner avoid solenoid valve 92, and structure complexity is increased, thereby increase cost, and because this solenoid valve 92 is provided with between cylinder 97,98, therefore, also increase the degree of difficulty of dismounting, if when desire maintenance or cleaning solenoid valve 92, expend man-hour relatively, increase cost.
It is arranged at cylinder head 90 tops with solenoid valve 92 again, the oil circuit of the cylinder head oil circuit 99 of its oil pressure through being flowed through is long, and make the transport velocity of oil pressure slack-off, thereby cause its switch speed of variable lift mechanism to react rapidly, and make the frequent escape of the in-house binding block of variable lift, and produce different sound.
The model utility content
The purpose of this utility model provides the configuration of the variable lift of a kind of compact internal combustion engine mechanism oil circuit, and it gets so that the oil pressure path is a beeline, and the transport velocity of oil pressure is accelerated, and its switch speed of variable lift mechanism is reacted rapidly.
The purpose of this utility model is achieved in that the configuration of the variable lift of a kind of compact internal combustion engine mechanism oil circuit, mainly is on a pivot of a cylinder head inside, coaxial one first neighbour mutually rocking arm, and one second rocking arm of being pivoted with.First rocking arm, second rocking arm are concaved with one first corresponding room, one second room respectively, reach one first pivoted hole, one second pivoted hole in adjacent inboard.
The first room inside has been installed with a binding block, forms a hydraulic chamber between this binding block and first room bottom, and it is communicated to a room oil circuit.And the second room inside has been installed with a piston, and group is provided with an elastic element between itself and second room bottom.Pivot is hubbed between first pivoted hole, second pivoted hole.
Wherein, a solenoid valve it be mounted on the cylinder head and contiguous second rocking arm, and pivot inside is equipped with the pivot oil circuit, and its two end communicates with solenoid valve and room oil circuit respectively.But solenoid valve selecting type control, so that oil pressure conducting and flow into hydraulic chamber via the pivot oil circuit, and overcome the pre-power that elastic element provides, and promote this binding block, impel one first rocking arm to combine with second rocking arm; Or make not conducting of oil pressure, promote this binding block by elastic element, make oil pressure flow out hydraulic chamber via the pivot oil circuit, and make first rocking arm and second sub rocker arm from.
Because solenoid valve it be mounted on the cylinder head and contiguous second rocking arm, oil pressure is directly flowed into or outflow hydraulic chamber from solenoid valve.Therefore, can make binding block positively make more rapidly one first rocking arm and second rocking arm in conjunction with or separate.
Wherein, the pivot oil circuit includes a side ports, reaches a central outlets, and side ports can be communicated in solenoid valve, and central outlets can be communicated in the room oil circuit.Again, solenoid valve can be locked in cylinder head by most root screws, and is positioned at place, spark plug adapter top position, with the dismounting of convenient electromagnetic valve and the cleaning of oil circuit.
The utility model has the advantages that: making the oil pressure path is beeline, oil pressure is directly flowed into or outflow hydraulic chamber from solenoid valve, and the transport velocity of oil pressure is accelerated; Therefore, can make binding block positively make more rapidly first rocking arm and second rocking arm in conjunction with or separate, therefore can improve the problem that its switch speed of known variable lift mechanism can't react rapidly.In addition, but the dismounting of the utility model convenient electromagnetic valve owing to be after the solenoid valve dismounting and be adjacent the pivot oil circuit that connects, therefore, also is convenient to the cleaning of oil circuit, thereby is reduced cost again.
Description of drawings
Fig. 1 is the sectional view of known techniques.
Fig. 2 is the stereogram of the utility model one preferred embodiment.
Fig. 3 is the exploded view of the variable lift of the utility model one mechanism.
Fig. 4 is the sectional view of the variable lift of the utility model one mechanism oil circuit configuration.
The primary clustering symbol description
Internal-combustion engine 1,9 cylinder head 11 solenoid valves 12
Screw 121 external oil pipe 13 pivots 2
Binding block 3 pistons 4 first Rocker arm 5s
First room, 51 first pivoted holes, 52 hydraulic chamber 511
Second pivoted hole, 62 elastic elements, 7 spark plug adapters 8
Cylinder head oil circuit 99 solenoid valve oil circuits 920
Embodiment
See also Fig. 2, it is the stereogram of the utility model one preferred embodiment.As shown in the figure, the utility model is the oil circuit configuration of the variable lift of a kind of compact internal combustion engine mechanism, and an internal-combustion engine 1 includes a cylinder head 11, a solenoid valve 12, reaches an external oil pipe 13.
As shown in Figure 2, (no matter be integral type cylinder head or not the separating casing head of icon) group is provided with a solenoid valve 12 on cylinder head 11, this solenoid valve 12 is to be locked in cylinder head 11 with two screws 121, and the top position that is positioned at spark plug adapter 8 is located, one external oil pipe 13, this external oil pipe 13 is communicated with this solenoid valve 12, in order to oil pressure is imported in this solenoid valve 12.
See also Fig. 3 and consult Fig. 4 in the lump, Fig. 3 is the exploded view of the variable lift of the utility model one mechanism, and Fig. 4 is the sectional view of the variable lift of the utility model one mechanism oil circuit configuration.As shown in the figure, variable lift mechanism includes a pivot 2, one first Rocker arm 5, and one second rocking arm 6.Wherein, first Rocker arm 5 is the rocking arm of low lift, and it mainly is when internal-combustion engine 1 low-speed running, uses during in order to drive low lift suction valve.Second rocking arm 6 is high-lift rocking arm, and it mainly is when internal-combustion engine 1 runs up, and uses when driving high-lift suction valve.
As shown in Figure 3, pivot 2 inside are equipped with a pivot oil circuit 22, and pivot oil circuit 22 includes a side ports 21, reaches a central outlets 23.First Rocker arm 5, second rocking arm 6 are concaved with one first corresponding room 51, one second room 61 respectively, reach one first pivoted hole 52, one second pivoted hole 62 in adjacent inboard.
As Fig. 3, shown in 4, first room, 51 inside have been installed with a binding block 3, form a hydraulic chamber 511 between binding block 3 and first room, 51 bottoms, it is communicated to a room oil circuit 512, and second room, 61 inside have been installed with a piston 4, and group is provided with an elastic element 7 between itself and second room, 61 bottoms, and pivot 2 is hubbed between first pivoted hole 52, second pivoted hole 62.
As shown in Figure 4, solenoid valve 12 is mounted on the cylinder head 11 and contiguous second rocking arm 6 places, and the side ports 21 of pivot oil circuit 22 is communicated in solenoid valve 12, and 23 of the central outlets of pivot oil circuit 22 are communicated in room oil circuit 512.
As Fig. 3, shown in 4, when solenoid valve 12 conductings, outside oil pressure can flow into room oil circuits 512 via pivot oil circuit 22 and enter hydraulic chamber 511 at last via external oil pipe 13 solenoid valve 12 of flowing through again.When the oil pressure that enters hydraulic chamber 511 when elastic element 7 its pre-power that provided that link with piston 4 are provided.Then impel binding block 3 interlock pistons 4, reach elastic element 7.When binding block 3 slips into second room 61, then impel one first Rocker arm 5 to combine with second rocking arm 6, at this moment, then the low lift of first Rocker arm 5 can be switched to the high-lift of second rocking arm 6, to drive high-lift suction valve.
When solenoid valve 12 not during conducting, then elastic element 7 discharges its elastic force potential energies to promote binding block 3.Make oil pressure from hydraulic chamber 511 flow through room oil circuit 512, and pivot oil circuit 22, from solenoid valve 12 oil pressure is discharged at last.When elastic element 7 promotes piston 4 and interlock binding block 3, binding block 3 is skidded off from second room 61, and involution is in first room 51.At this moment, first Rocker arm 5 separates with second rocking arm 6, and makes the Rocker arm 5 of winning switch back the low lift of originally being taken charge of, to drive the low lift suction valve.In this example, elastic element 7 is meant a pressure spring.
Because solenoid valve 12 it be mounted on the cylinder head 11 and contiguous second rocking arm 6, can make oil pressure directly flow into or flow out hydraulic chamber 511 from solenoid valve 12.Therefore, can make binding block 3 positively make more rapidly first Rocker arm 5 and second rocking arm 6 in conjunction with or separate, therefore can improve the problem that its switch speed of known variable lift mechanism can't react rapidly.
And for example shown in Figure 2, solenoid valve 12 is the sides that are locked in cylinder head 11 with two screws 121, but the therefore dismounting of convenient electromagnetic valve 12 is adjacent the pivot oil circuit 22 that connects owing to being after the dismounting of solenoid valve 12 again, therefore, also is convenient to the cleaning of oil circuit.
The foregoing description only is to give an example for convenience of description, and oneself should the claim scope is described to be as the criterion the interest field that the utility model is advocated to apply for a patent, but not only limits to the foregoing description.
Claims (6)
1. the variable lift of compact internal combustion engine mechanism oil circuit configuration, mainly be on a pivot of a cylinder head inside, coaxially be pivoted with one first mutually neighbour rocking arm, and one second rocking arm, this first rocking arm is concaved with one first corresponding room respectively with this second rocking arm in adjacent inboard, one second room, one first pivoted hole, and one second pivoted hole, this first room inside has been installed with a binding block, form a hydraulic chamber between this binding block and this first room bottom, it is communicated to a room oil circuit, and this second room inside has been installed with a piston, group is provided with an elastic element between itself and this second room bottom, and this pivot is hubbed at this first pivoted hole, between this second pivoted hole;
It is characterized in that:
One solenoid valve it be mounted on this cylinder head and contiguous this second rocking arm, this pivot inside is equipped with a pivot oil circuit, its two end communicates with this solenoid valve and this room oil circuit respectively, but this solenoid valve selecting type control, make the oil pressure conducting flow into this hydraulic chamber via this pivot oil circuit, to overcome the pre-power that this elastic element is provided, promote this binding block, impel this one first rocking arm to combine with this second rocking arm, or make not conducting of oil pressure, promote this binding block by this elastic element, make this oil pressure flow out this hydraulic chamber via this pivot oil circuit, and make this one first rocking arm and this second sub rocker arm from.
2. the oil circuit configuration of the variable lift of a kind of compact internal combustion engine as claimed in claim 1 mechanism is characterized in that this solenoid valve is arranged at a spark plug adapter top position.
3. the oil circuit configuration of the variable lift of compact internal combustion engine as claimed in claim 1 mechanism is characterized in that this pivot oil circuit includes a side ports, reaches a central outlets, and this side ports is communicated in this solenoid valve, and this central outlets is communicated in this room oil circuit.
4. the oil circuit configuration of the variable lift of compact internal combustion engine as claimed in claim 1 mechanism is characterized in that this solenoid valve is to be locked in this cylinder head with most root screws.
5. as the claim 1 variable lift of a described compact internal combustion engine mechanism oil circuit configuration, it is characterized in that more comprising an external oil pipe, this external oil pipe is communicated with this solenoid valve, in order to oil pressure is imported in this solenoid valve.
6. the oil circuit configuration of the variable lift of compact internal combustion engine as claimed in claim 1 mechanism is characterized in that elastic element is a pressure spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201402929U CN201269120Y (en) | 2008-10-16 | 2008-10-16 | Lift-variable mechanism oilway configuration of miniature internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201402929U CN201269120Y (en) | 2008-10-16 | 2008-10-16 | Lift-variable mechanism oilway configuration of miniature internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201269120Y true CN201269120Y (en) | 2009-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201402929U Expired - Fee Related CN201269120Y (en) | 2008-10-16 | 2008-10-16 | Lift-variable mechanism oilway configuration of miniature internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201269120Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507973A (en) * | 2014-09-25 | 2016-04-20 | 光阳工业股份有限公司 | Variable lift rocker arm device |
-
2008
- 2008-10-16 CN CNU2008201402929U patent/CN201269120Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507973A (en) * | 2014-09-25 | 2016-04-20 | 光阳工业股份有限公司 | Variable lift rocker arm device |
| CN105507973B (en) * | 2014-09-25 | 2019-06-11 | 光阳工业股份有限公司 | Variable lift rocker arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20171016 |