CN201137526Y - Internal combustion engine piston pin eccentric wheel gas pressure automatic regulating device - Google Patents
Internal combustion engine piston pin eccentric wheel gas pressure automatic regulating device Download PDFInfo
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- CN201137526Y CN201137526Y CNU2007201882226U CN200720188222U CN201137526Y CN 201137526 Y CN201137526 Y CN 201137526Y CN U2007201882226 U CNU2007201882226 U CN U2007201882226U CN 200720188222 U CN200720188222 U CN 200720188222U CN 201137526 Y CN201137526 Y CN 201137526Y
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- connecting rod
- eccentric wheel
- combustion engine
- internal combustion
- small end
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Abstract
The utility model discloses an internal combustion engine piston pin eccentric wheel gas pressure automatic adjuster, belonging to the reciprocating internal combustion engine field, which comprises a connecting rod, the body of the connecting rod, a connecting rod small head and a piston pin. The utility model is characterized in that the hole of the connecting rod small head is provided with an eccentric wheel via a clearance fit, the eccentric piston pin hole of the eccentric wheel is provided with a piston pin via a clearance fit, the eccentric wheel and the small head are provided with a torsion spring therebetween. The utility model realizes the change of the compression ratio of the internal combustion engine in a preset range and the automatic adjustment in a preset range, therefore, the pressure of the burning room is beneficial for the economic combustion and discharge. Via the utility model, the internal combustion engine can attain better compression ratio at low speed, middle speed and high speed, to realize economic combustion and discharge. And the utility model can reduce the noise and vibration, stabilize the operation and reduce the discharge of the internal combustion engine.
Description
Technical field
The utility model relates to reciprocating internal combustion engine, more specifically relates to a kind of internal combustion engine pin eccentric wheel gas pressure automatic control tegulatingdevice.
Background technique
In reciprocating internal combustion engine, no matter be the petrol engine of Spark ignition type or compression-ignited diesel engine, the compression ratio of its cylinder is even to be a constant.During reciprocating internal combustion engine work, can be divided into three kinds of work condition states: the one, the low speed small power state; The 2nd, middling speed economic power state; The 3rd, the high-speed high-power state.At the low speed small power state, air fuel ratio is little, and the pollutant value is higher in the waste gas; At middling speed economic power state, air fuel ratio the best, the pollutant value in the waste gas is suitable; At the high-speed high-power state, air fuel ratio is less, and the pollutant value in the waste gas is also higher.At present, reduce the method for pollutant value in the reciprocating internal combustion engine waste gas, mainly contain two kinds of emission controls by improving combustion and external purifications.Emission controls by improving combustion is by improving the Structure of Internal-Combustion Engine design, the control combustion process, or realize with clean fuel, its electric jet technology is the comparatively desirable technological scheme of present emission controls by improving combustion, the core of electric jet technology is to make the air fuel ratio of internal-combustion engine remain on preferable states, and electric jet technology is mainly used in the economic speed state.External purification is to add purification plant to realize in the drain pipe of internal-combustion engine, and its ternary catalyzing unit is comparatively universal.
The inventor once invented and had applied for " the self-adjustable explosive motor cylinder of a kind of firing chamber gas pressure ", the basic structure of this technology is: it is made up of cylinder, connecting rod small end, wrist pin, piston, spring, and spring is located at internal piston and pushes up between last and the engine gudgeon pin.The working principle of this technology is: burn the pressure hour of chamber when cylinder combustion, the pressure that promptly acts on the piston head is also little, and spring increases compression ratio, economical combustion of favourable firing chamber and economic discharging; Burn the pressure of chamber when big when cylinder combustion, the pressure that promptly acts on the piston head is also big, and spring reduces compression ratio, economical combustion of favourable firing chamber and economic discharging.Though this technology is feasible,, structure is reasonable inadequately, life-span weak point in the use, noise is big, haves much room for improvement.
Summary of the invention
The purpose of this utility model:, and provide a kind of internal combustion engine pin eccentric wheel gas pressure automatic control tegulatingdevice for the work done and the discharging of favourable reciprocating internal combustion engine.
The technical solution of the utility model: a kind of internal combustion engine pin eccentric wheel gas pressure automatic control tegulatingdevice, it comprises connecting rod, connecting rod shank, connecting rod small end, wrist pin, it is characterized in that: internal clearance is combined with eccentric wheel in the hole of connecting rod small end, be combined with wrist pin at eccentric offset piston pin-and-hole internal clearance, between eccentric wheel and connecting rod small end, be provided with torsion spring.
Described torsion spring can be located at the middle part of connecting rod small end, and the middle part of torsion spring is connected in the spring hook.
Described torsion spring can be located at connecting rod small end an end.
Described torsion spring can be two, connecting rod small end two ends respectively establish a torsion spring.
Described eccentric wheel is provided with oilhole.
Described eccentric throw of eccentric is 3.5 ± 2mm.
The center line in the center line of described connecting rod shank and the hole of connecting rod small end is non-intersect, the center line 2 ± 1mm in the hole of the disalignment connecting rod small end of connecting rod shank.
When described torsion spring can be located at the middle part of connecting rod small end, described eccentric wheel was provided with oilhole, was provided with the yielding rubber piece on connecting rod small end.
Working principle of the present utility model: when internal-combustion engine is in the low speed small power state, it is little to advance air-fuel mixture amount, chamber pressure is low, this device is under the twisting force of torsion spring, compression ratio is suitably increased, suitably improve the pressure of firing chamber, use weak mixture, favourable combustion chambers of internal combustion engines protection economical combustion and economic discharging; When internal-combustion engine is in the middling speed economic power, air fuel ratio the best, chamber pressure is suitable, and compression ratio also is in optimum value, and combustion chambers of internal combustion engines is in best economical combustion and economic discharging; When internal-combustion engine was in high-speed high-power, air fuel ratio was little, and chamber pressure is big; combustion gas acts on the torsion of the pressure of piston head greater than torsion spring; compression ratio is reduced, suitably reduced the pressure of firing chamber, favourable combustion chambers of internal combustion engines protection economical combustion and economic discharging.No matter when what power rating internal-combustion engine be in like this, internal combustion engine pin eccentric wheel gas pressure automatic control tegulatingdevice of the present utility model all can have been regulated the pressure of firing chamber automatically, favourable combustion chambers of internal combustion engines protection economical combustion and economic discharging.
The beneficial effects of the utility model: this device has realized that successfully the compression ratio of internal-combustion engine changes in certain scope, and regulates automatically in certain scope, makes the pressure useful firing chamber economical combustion and the economic discharging of firing chamber.This device is applicable to the petrol engine of Spark ignition type or compression-ignited diesel engine.When the pressure of firing chamber hour, this device can make compression ratio increase automatically; When the pressure of firing chamber was big, this device can make compression ratio reduce automatically.No matter this device makes internal-combustion engine when low speed, middling speed, high speed, can both keep preferable compression ratio, make internal-combustion engine be in economical combustion and economic discharging.This device also can make the noise of compression ignition internal combustion reduce, and vibration reduces, and it is more steady to work, and discharging reduces.
Description of drawings
Fig. 1 is that torsion spring is located at the middle structural representation of connecting rod small end in the utility model;
Fig. 2 is the A-A sectional view among Fig. 1;
Fig. 3 is the structural representation that torsion spring is located at connecting rod small end one end in the utility model;
Fig. 4 is the structural representation that torsion spring is located at the connecting rod small end two ends in the utility model;
Fig. 5 is a fundamental diagram of the present utility model, and wherein, Fig. 5 a is the schematic representation of compression stroke initial state, and Fig. 5 b is the schematic representation of compression stroke done state, and Fig. 5 c is the schematic representation of work done initial state, and Fig. 5 d is the work done schematic representation of state midway.
Embodiment
Below by embodiment, the utility model will be further described.
Embodiment 1: a kind of torsion spring is located at the internal combustion engine pin eccentric wheel gas pressure automatic control tegulatingdevice at connecting rod small end middle part.
As Fig. 1, Fig. 2, shown in Figure 5, a kind of internal combustion engine pin eccentric wheel gas pressure automatic control tegulatingdevice, it comprises connecting rod, connecting rod shank 7, connecting rod small end 2, wrist pin 4, it is characterized in that: internal clearance is combined with eccentric wheel 3 in the hole of connecting rod small end 2, offset piston pin-and-hole internal clearance at eccentric wheel 3 is combined with wrist pin 4, is provided with torsion spring 1 between eccentric wheel 3 and connecting rod small end 2.Described torsion spring 1 is located at the middle part of connecting rod small end 2, and the middle part of torsion spring 1 is connected in the spring hook 5.The throw of eccentric of described eccentric wheel 3 is 3.5 ± 2mm.The center line in the hole of the center line of connecting rod shank 7 and connecting rod small end 2 is non-intersect, the center line 2 ± 1mm in the hole of the disalignment connecting rod small end 2 of connecting rod shank 7.Described eccentric wheel 3 is provided with oilhole 31, is provided with yielding rubber piece 6 on connecting rod small end 2.
The working principle of present embodiment is as shown in Figure 5: in Fig. 5 a, that is, the compression stroke initial state, the line m at the center of wrist pin and eccentric wheel center is ∠ a with the angle of the horizontal line n at center by wrist pin
1In Fig. 5 b, that is, and the compression stroke done state, cylinder is advancing gas quantity when big, and the pressure that piston bears is big, and cylinder is advancing gas quantity hour, the pressure that piston bears is little, and the line m at the center of wrist pin and eccentric center is ∠ a with the angle of the horizontal line n at center by wrist pin
2, the pressure that piston bears is big, the angle ∠ a of the line m at the center of wrist pin and eccentric center and the horizontal line n at center by wrist pin
2More little, ∠ a
2Less than ∠ a
1, piston moves down apart from S
1, ∠ a
2More small piston move down apart from S
1Big more, this device can according to what that advance gas quantity determine automatically to move down apart from S
1, regulate combustion chamber volume automatically, make the gaseous-pressure in the firing chamber remain on desirable value automatically, and being the torsion of torsion spring 1, this value provides by eccentric wheel; In Fig. 5 c, that is, the work done initial state, this moment fuel gas buring, the pressure in the cylinder increases suddenly, piston has moved down apart from S again
2, the distance that piston moves down is S
1+ S
2, continue enlarging combustion chamber volume, the surge pressure when reducing fuel gas buring reduces the vibration and the noise of motor, particularly reduces pinking, and the angle of the horizontal line n at the line m at the center of wrist pin and eccentric center and the center by wrist pin is ∠ a
3, the moment of torsion that torsion spring 1 stores is big more; In Fig. 5 d, promptly, work done is state midway, when combustion gas acts on the moment of torsion that moment of torsion that the pressure of piston produces stores less than torsion spring 1, the moment of torsion that torsion spring 1 stores resets eccentric wheel 3, at this moment,, the line m at the center of wrist pin and eccentric center equals ∠ a with the angle of the horizontal line n at center by wrist pin
1When idling, the pressure that piston bears is little, and this moment, torsion spring 1 offered piston to climbing power, and combustion chamber volume is reduced, and made combustion gas that preferable pressure be arranged, and makes internal-combustion engine be in economical combustion and economic discharging.
Example example 2: a kind of torsion spring is located at the internal combustion engine pin eccentric wheel gas pressure automatic control tegulatingdevice of connecting rod small end one end.
As shown in Figure 3: a kind of internal combustion engine pin eccentric wheel gas pressure automatic control tegulatingdevice, it comprises connecting rod, connecting rod shank 7, connecting rod small end 2, wrist pin 4, it is characterized in that: internal clearance is combined with eccentric wheel 3 in the hole of connecting rod small end 2, offset piston pin-and-hole internal clearance at eccentric wheel 3 is combined with wrist pin 4, is provided with torsion spring 1 between eccentric wheel 3 and connecting rod small end 2.Described torsion spring 1 is located at an end of connecting rod small end 2.Can on described eccentric wheel 3, be provided with oilhole 31.The throw of eccentric of described eccentric wheel 3 is 3.5 ± 2mm.The center line in the hole of the center line of connecting rod shank 7 and connecting rod small end 2 is non-intersect, the center line 2 ± 1mm in the hole of the disalignment connecting rod small end 2 of connecting rod shank 7.
This routine working principle is identical with embodiment 1 as figure.
Embodiment 3: a kind of torsion spring is located at the internal combustion engine pin eccentric wheel gas pressure automatic control tegulatingdevice at connecting rod small end two ends.
As Fig. 4, shown in: a kind of internal combustion engine pin eccentric wheel gas pressure automatic control tegulatingdevice, it comprises connecting rod, connecting rod shank 7, connecting rod small end 2, wrist pin 4, it is characterized in that: internal clearance is combined with eccentric wheel 3 in the hole of connecting rod small end 2, offset piston pin-and-hole internal clearance at eccentric wheel 3 is combined with wrist pin 4, is provided with torsion spring 1 between eccentric wheel 3 and connecting rod small end 2.Described torsion spring 1 is two, respectively establishes a torsion spring 1 at the two ends of connecting rod small end 2.Can on described eccentric wheel 3, be provided with oilhole 31.The throw of eccentric of described eccentric wheel 3 is 3.5 ± 2mm.The center line in the hole of the center line of connecting rod shank 7 and connecting rod small end 2 is non-intersect, the center line 2 ± 1mm in the hole of the disalignment connecting rod small end 2 of connecting rod shank 7.
This routine working principle is identical with embodiment 1 as figure.
Claims (8)
1, a kind of internal combustion engine pin eccentric wheel gas pressure automatic control tegulatingdevice, it comprises connecting rod, connecting rod shank (7), connecting rod small end (2), wrist pin (4), it is characterized in that: the hole internal clearance at connecting rod small end (2) is combined with eccentric wheel (3), offset piston pin-and-hole internal clearance at eccentric wheel (3) is combined with wrist pin (4), is provided with torsion spring (1) between eccentric wheel (3) and connecting rod small end (2).
2, by the described internal combustion engine pin of claim 1 eccentric wheel gas pressure automatic control tegulatingdevice, it is characterized in that: described torsion spring (1) is located at the middle part of connecting rod small end (2), and the middle part of torsion spring (1) is connected in the spring hook (5).
3, by the described internal combustion engine pin of claim 1 eccentric wheel gas pressure automatic control tegulatingdevice, it is characterized in that: described torsion spring (1) is located at an end of connecting rod small end (2).
4, by the described internal combustion engine pin of claim 1 eccentric wheel gas pressure automatic control tegulatingdevice, it is characterized in that: described torsion spring (1) is two, respectively establishes a torsion spring (1) at the two ends of connecting rod small end (2).
5, by the described internal combustion engine pin of claim 1 eccentric wheel gas pressure automatic control tegulatingdevice, it is characterized in that: described eccentric wheel (3) is provided with oilhole (31).
6, by each described internal combustion engine pin eccentric wheel gas pressure automatic control tegulatingdevice in the claim 1 to 5, it is characterized in that: the throw of eccentric of described eccentric wheel (3) is 3.5 ± 2mm.
7, by the described internal combustion engine pin of claim 1 eccentric wheel gas pressure automatic control tegulatingdevice, it is characterized in that: the center line in the hole of the center line of connecting rod shank (7) and connecting rod small end (2) is non-intersect, the center line 2 ± 1mm in the hole of the disalignment connecting rod small end (2) of connecting rod shank (7).
8, by the described internal combustion engine pin of claim 2 eccentric wheel gas pressure automatic control tegulatingdevice, it is characterized in that: described eccentric wheel (3) is provided with oilhole (31), is provided with yielding rubber piece (6) on connecting rod small end (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201882226U CN201137526Y (en) | 2007-11-15 | 2007-11-15 | Internal combustion engine piston pin eccentric wheel gas pressure automatic regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201882226U CN201137526Y (en) | 2007-11-15 | 2007-11-15 | Internal combustion engine piston pin eccentric wheel gas pressure automatic regulating device |
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| Publication Number | Publication Date |
|---|---|
| CN201137526Y true CN201137526Y (en) | 2008-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201882226U Expired - Fee Related CN201137526Y (en) | 2007-11-15 | 2007-11-15 | Internal combustion engine piston pin eccentric wheel gas pressure automatic regulating device |
Country Status (1)
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| CN (1) | CN201137526Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756781A (en) * | 2016-04-20 | 2016-07-13 | 吉林大学 | Two-level compression ratio variable piston-connecting rod assembly |
| CN105840303A (en) * | 2016-05-13 | 2016-08-10 | 吉林大学 | Variable-compression-ratio piston connecting rod assembly driven by eccentric shaft sleeves |
| CN111503329A (en) * | 2020-05-06 | 2020-08-07 | 长沙宁湖机械设备有限公司 | A multistage voltage regulator for natural gas recovery |
-
2007
- 2007-11-15 CN CNU2007201882226U patent/CN201137526Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756781A (en) * | 2016-04-20 | 2016-07-13 | 吉林大学 | Two-level compression ratio variable piston-connecting rod assembly |
| CN105840303A (en) * | 2016-05-13 | 2016-08-10 | 吉林大学 | Variable-compression-ratio piston connecting rod assembly driven by eccentric shaft sleeves |
| CN105840303B (en) * | 2016-05-13 | 2018-07-20 | 吉林大学 | A kind of variable-compression-ratio piston link assembly of excentric sleeve transmission |
| CN111503329A (en) * | 2020-05-06 | 2020-08-07 | 长沙宁湖机械设备有限公司 | A multistage voltage regulator for natural gas recovery |
| CN111503329B (en) * | 2020-05-06 | 2021-10-08 | 胶州泰坤天然气有限公司 | A multistage voltage regulator for natural gas recovery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20111115 |