CN204827569U - Variable compression that acting stroke is greater than pressure stroke compares engine - Google Patents
Variable compression that acting stroke is greater than pressure stroke compares engine Download PDFInfo
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- CN204827569U CN204827569U CN201520545275.3U CN201520545275U CN204827569U CN 204827569 U CN204827569 U CN 204827569U CN 201520545275 U CN201520545275 U CN 201520545275U CN 204827569 U CN204827569 U CN 204827569U
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Abstract
The utility model discloses a variable compression that acting stroke is greater than pressure stroke compares engine, the engine includes cylinder, cam, bent axle and piston, wherein, the 1 -2 that the piston stroke of engine is current engine piston stroke of the same race doubly, the cam lead angle with fall the angle and for 117 - 173. The utility model discloses make full use of the energy that produces of burning, the energy can be saved increases output, has solved the not enough problem of distribution under the high rotational speed of traditional engine, it is more complicated than engine structure also to have solved traditional variable compression, the booster compressor can be utilized better to the immature drawback of technique. The utility model discloses the increase crank throw, extension cylinder length increases the convex surface length of camshaft, the extension admission valve shut -in time, makes inspiratory unnecessary gas outgoing. Under the unchangeable condition of compression ratio, make the acting stroke be greater than pressure stroke. Utilize the elongated stroke to continue the acting, improved engine power, the energy can be saved.
Description
Technical field
The utility model relates to engine art, is specifically related to the variable compression ratio engine that a kind of working stroke is greater than compression stroke.
Background technique
Four-stroke piston engine known at present, crank throw is larger, and moment of torsion is larger, and is subject to the restriction of fuel compression ratio, and crank throw cannot increase.And the air pressure acting utilizing working stroke fuel combustion to produce, because working stroke is equal with compression stroke, the air pressure energy that fuel produces is not fully utilized and is just excluded, both waste energy like this, additionally reduce the output power of motor, the application of existing pressure-increasing machine has sucked more air, and working stroke is equal with compression stroke, more wastes the energy.
Model utility content
The purpose of this utility model is to provide the motor that a kind of working stroke is greater than compression stroke.
In order to solve problems of the prior art, the technical solution of the utility model is:
A kind of cam, the lift angle of described cam and fall angle and be 117 °-173 °.
A kind of working stroke is greater than the variable compression ratio engine of compression stroke, comprise cylinder barrel, cam, bent axle and piston, wherein, the piston stroke of described motor be the 1-2 of available engine piston stroke of the same race doubly, the lift angle of described cam and fall angle and be 117 °-173 °.This cam can extend the shut-in time of suction valve, overcomes the retardance that air enters, and makes air be full of cylinder barrel, solves the problem of distribution deficiency under conventional engines height rotating speed.At compression stage, cam extends the shut-in time of suction valve, make piston along cylinder barrel inwardly move reach designed use the compression ratio of fuel after close suction valve, make the working stroke of motor be greater than compression stroke.
Preferably, if described motor gasoline engines, its piston stroke is 7-20cm.The piston stroke of this lengthening, can with other respective outer side edges, complete the object that working stroke is greater than compression stroke.
Preferred further, the rotating diameter of described bent axle is 7-20cm.The radius of bent axle lengthens, and can increase the output torque of motor, make the power of motor more sufficient.
Preferably, if described motor diesel-fueled engine, its piston stroke is 10-28cm.
Preferred further, the rotating diameter of described bent axle is 10-28cm.
Preferably, described motor is provided with valve timing apparatus.Valve timing apparatus can regulate the shut-in time of valve, realizes the adjustment to compression ratio.
Preferred further, if described motor gasoline engines, its compression ratio is 4:1-12:1.Alterable compression ratio can solve the phenomenon of detonation using pressure-increasing machine to produce, fuel-economizing more.
Preferred further, if described motor diesel-fueled engine, its compression ratio is 6:1-22:1.
Advantageous Effects of the present utility model is:
1, the utility model takes full advantage of the energy that burning produces, and saves the energy, increases output power, solve the problem of distribution deficiency under conventional engines height rotating speed, also solve conventional variable compression ratio engine complex structure, the jejune drawback of technology, can utilize pressure-increasing machine better.
2, the utility model increases crank throw, lengthens cylinder barrel length, increases the convex surface length of camshaft, extends the suction valve shut-in time, the excessive gas of suction is discharged.Compared with conventional engines, when compression ratio is constant, working stroke is made to be greater than compression stroke.Utilize the stroke lengthened to continue acting, improve engine power, save the energy, avoid waste.
3, the utility model utilizes existing valve timing apparatus to regulate the shut-in time of intake valve, can realize the free adjustment to compression stroke length, become the motor of variable compression ratio.
4, crank throw lengthens the output torque that can increase motor, makes motor energeticallyer.
Accompanying drawing explanation
Fig. 1 is the structural representation of cam of the present utility model;
Fig. 2 is structural representation of the present utility model.
Wherein, 1, suction valve, 2, camshaft, 3, outlet valve, 4, cylinder barrel, 5, piston.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, cam lift angle and fall angle and be 117 °-173 °.
As shown in Figure 2, working stroke is greater than a variable compression ratio engine for compression stroke, comprises cylinder barrel 4, cam, bent axle and piston 5, wherein, the piston stroke of described motor be the 1-2 of available engine piston stroke of the same race doubly, the lift angle of cam and fall angle and be 117 °-173 °.
Embodiment 1
Motor is gasoline engines, and its piston 5 stroke can be 7-20mm.The rotating diameter of bent axle can be 7-20mm.Piston 5 stroke matches with crank throw, finishes the work.Described motor is provided with valve timing apparatus.Valve timing apparatus can regulate the shut-in time of valve, realizes the adjustment to compression ratio.The regulation range of its compression ratio is 4:1-12:1.
In suction stroke, this cam can extend the shut-in time of suction valve, overcomes the retardance that air enters, and makes air be full of cylinder barrel 4, solves the problem of distribution deficiency under conventional engines height rotating speed.In compression stroke, cam extends the shut-in time of suction valve 1, make piston 5 along cylinder barrel 4 inwardly move reach designed use the compression ratio of fuel after close suction valve 1, make the working stroke of motor be greater than compression stroke.
Embodiment 2
If described motor diesel-fueled engine, its piston 5 stroke is 10-28mm, and the rotating diameter of bent axle is 10-28mm.
Described motor is provided with valve timing apparatus.Valve timing apparatus can regulate the shut-in time of valve, realizes the adjustment to compression ratio, and the regulation range of its compression ratio is 6:1-22:1.
Piston 5 enters the suction stroke later stage, and suction valve 1 still stays open state under the effect of camshaft 2, and outlet valve 3 is closed.Piston 5 enters compression stroke, and suction valve 1 is still held open state under the effect of camshaft 2, the gas of suction is discharged, decreases actual compression stroke.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to utility model protection scope; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still in protection domain of the present utility model.
Claims (8)
1. a working stroke is greater than the variable compression ratio engine of compression stroke, it is characterized in that: comprise cylinder barrel, cam, bent axle and piston, wherein, the piston stroke of described motor be the 1-2 of available engine piston stroke of the same race doubly, the lift angle of described cam and fall angle and be 117 °-173 °.
2. motor according to claim 1, is characterized in that: if described motor gasoline engines, its piston stroke is 7-20mm.
3. motor according to claim 2, is characterized in that: the rotating diameter of described bent axle is 7-20mm.
4. motor according to claim 1, is characterized in that: if described motor diesel-fueled engine, its piston stroke is 10-28mm.
5. motor according to claim 4, is characterized in that: the rotating diameter of described bent axle is 10-28mm.
6. motor according to claim 1, is characterized in that: described motor is provided with valve timing apparatus.
7. motor according to claim 6, is characterized in that: if described motor gasoline engines, its compression ratio is 4:1-12:1.
8. motor according to claim 6, is characterized in that: if described motor diesel-fueled engine, its compression ratio is 6:1-22:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520545275.3U CN204827569U (en) | 2015-07-24 | 2015-07-24 | Variable compression that acting stroke is greater than pressure stroke compares engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520545275.3U CN204827569U (en) | 2015-07-24 | 2015-07-24 | Variable compression that acting stroke is greater than pressure stroke compares engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204827569U true CN204827569U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520545275.3U Expired - Fee Related CN204827569U (en) | 2015-07-24 | 2015-07-24 | Variable compression that acting stroke is greater than pressure stroke compares engine |
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| CN (1) | CN204827569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065073A (en) * | 2015-07-24 | 2015-11-18 | 江兰超 | Variable compression engine with cam and working strokes greater than compression stroke |
-
2015
- 2015-07-24 CN CN201520545275.3U patent/CN204827569U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065073A (en) * | 2015-07-24 | 2015-11-18 | 江兰超 | Variable compression engine with cam and working strokes greater than compression stroke |
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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 |
Granted publication date: 20151202 Termination date: 20170724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |