CN204283604U - Be provided with the cylinder type pressurized machine of two section push rod and scavenging advance angle - Google Patents
Be provided with the cylinder type pressurized machine of two section push rod and scavenging advance angle Download PDFInfo
- Publication number
- CN204283604U CN204283604U CN201420756465.5U CN201420756465U CN204283604U CN 204283604 U CN204283604 U CN 204283604U CN 201420756465 U CN201420756465 U CN 201420756465U CN 204283604 U CN204283604 U CN 204283604U
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- cylinder
- push rod
- scavenging
- advance angle
- air pressure
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Abstract
For prior art, particularly application number is the deficiency existed in the patent of CN201320050926, and the utility model provides a kind of cylinder type pressurized machine being provided with two section push rod and scavenging advance angle.Its major character is: arranging two section push rod 2 for cylinder C intake valve 4 upper end, this push rod is formed by two sections, upper-lower section top stem casing is connected together, without substantial contact, intermediate buffering spring 11 is placed between upper and lower deck, two sections of push rod 2 upper ends contact with for cylinder cam 3, and lower end and valve spring are rigidly connected; Advance angle α is set to for cylinder C crank, when the exhaust of acting cylinder can be regulated to draw to an end, for the air pressure that cylinder C and air supply pipe 5 internal air pressure are more than or equal to acting cylinder as soon as possible, makes scavenging more abundant.The beneficial effects of the utility model are, controlled for cylinder C, and scavenging is more thorough, effectively can improve the mechanical efficiency of internal-combustion engine.
Description
Technical field
The utility model relates to supercharging mechanical technical field, particularly relates to a kind of cylinder type pressurized machine.
Background technique
At present, pressurized machine is turbosupercharger mostly, and for turbosupercharger, determining under rotating speed, pressure ratio is constant, so whether fully scavenging depends primarily on the exhaust pressure of acting cylinder, scavenging narrow limitation is larger.Application number is the patent of CN201320050926, although added pressurized cylinder, does not have actual use value.Be described for the cylinder B that does work below.
The first, when engine idle or when starting, if C still works for cylinder (original text is air inlet compression cylinder), so can consume a large amount of shaft works and produce mechanical loss, even can cause stopping working maybe cannot start.
Second, this model utility is mentioned, when arriving lower dead center for cylinder piston 7, acting cylinder (original text is burning working cylinder) piston 6 arrives top dead center, although now do work, cylinder B exhaust terminates, but owing to there is exhaust pressure, so its air pressure inside is still greater than air supply pipe 5 internal air pressure, if now open acting cylinder intake valve 8, exhaust gas recirculation can be caused to air supply pipe 5 and in cylinder C, that is there is no scavenging process.
Summary of the invention
In order to overcome and solve deficiency and the defect of above-mentioned patent, the utility model patent provides a kind of cylinder type pressurized machine being provided with two section push rod and scavenging advance angle, and this pressurized machine not only makes the working state for cylinder C controlled, and can make scavenging more fully thoroughly.
The utility model solves the technological scheme that its technical problem adopts: devising a kind of two section push rod 2 for cylinder intake valve 4 upper end.This push rod is formed by two sections, and epimere push rod 10 is stepped ramp type cylindrical bodys, and upper end contacts with for cylinder cam 3, and hypomere push rod 12 is the cylindrical bodys containing cylindrical hole, and under hypomere push rod damping spring, deck 15 is rigidly connected with lower part 17 and valve spring; Epimere push rod 10 surface of contact 18 and hypomere push rod 12 surface of contact 19 substantial contact; Guide rod 14 inserts in guide hole 16, without substantial contact; Intermediate buffering spring upper blocking seat 13 surface contacts with damping spring 11 upper surface; Under damping spring, deck 15 surface contacts with damping spring 11 lower surface; The effect of damping spring be instantly section push rod 12 because of idling or the machine that opens be forced pressure time, the activity of epimere push rod 10 is on for cylinder intake valve 4 not impact.Hypomere push rod 12 is controlled by valve spring (not indicating in figure), and valve spring is by automatically controlled or Non-follow control.
The utility model is in order to solve the defect of scavenging, crank rotation advance angle α ((hereinafter referred to as scavenging advance angle) is being added for cylinder lower end, there is this scavenging advance angle, when arriving lower dead center for cylinder piston 7, acting cylinder piston 6 does not also arrive top dead center, now can not open acting cylinder intake valve 8, along with starting for cylinder piston 7 to rise, constantly increase for the air pressure in cylinder C and air supply pipe 5, the cylinder exhaust valve 9 that now does work is in open mode, air pressure in acting cylinder B is in continuous decline, acting cylinder intake valve 8 is opened when the air pressure in air supply pipe 5 is more than or equal to acting cylinder B internal air pressure, carry out scavenging.Adjustment scavenging advance angle α, make air supply pipe 5 air pressure just greater than or equal acting cylinder B internal air pressure time just arrive top dead center for cylinder piston 7, abundant scavenging can be accomplished to a greater extent.
The beneficial effects of the utility model are, controlled for cylinder C, and scavenging is more thorough, effectively can improve the mechanical efficiency of internal-combustion engine.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model overall structure schematic diagram; Fig. 2 is the overall sectional drawing of the utility model; Fig. 3 is two section push rod sectional drawings; Fig. 3-1 is the sectional drawing of epimere push rod; Fig. 3-2 is damping spring sectional drawings; Fig. 3-3 is hypomere push rod sectional drawings.
1. acting cylinder A pistons in figure; 2. pair section push rod; 3. for cylinder cam; 4. for cylinder C intake valve; 5. air supply pipe; 6. do work cylinder B piston; 7. for cylinder C piston; 8. do work cylinder B intake valve; 9. do work cylinder B exhaust valve; 10. epimere push rod; 11. damping springs; 12. hypomere push rods; 13. damping spring upper blocking seats; 14. guide rods; Deck under 15. damping springs; 16. guide holes; Under 17. damping springs, deck is with lower part; 18. epimere ejector pin contact faces; 19. hypomere ejector pin contact faces.
Embodiment
In this supercharge cylinders device, acting cylinder carries out air-breathing, compression, acting, exhaust four strokes, and only does air inlet and air feed two strokes for cylinder.When startup or idling, pressure will be forced for cylinder C hypomere push rod 12, and make often to open for cylinder C intake valve 4, acting cylinder A and the cylinder B that does work can not be caused so maybe cannot to start because pressure is excessive and flame-out when compression stroke.When needs supercharging, to unclamp for cylinder C hypomere push rod 12, (under not indicating the effect of > in figure, contact with for cylinder C epimere push rod 10 for cylinder C hypomere push rod 12 in valve spring, and make can close for cylinder C intake valve 4, now start working for cylinder C.Its working procedure is as follows:
State according to Fig. 2, arrives lower dead center for cylinder C piston 7, and acting cylinder A compression stroke does not also terminate, and acting cylinder B exhaust stroke does not terminate yet, and now in all valves, only has the exhaust valve 9 of acting cylinder B to open.Arrive top dead center along with acting cylinder A piston 1 and acting cylinder B piston 6 arrive simultaneously, to rise a segment distance for cylinder C piston 7, and add for the air pressure in cylinder C and air supply pipe 5, when air supply pipe internal air pressure is more than or equal to acting cylinder B internal air pressure, acting cylinder B intake valve 8 and acting cylinder B exhaust valve 9 are opened simultaneously, carry out the scavenging process of acting cylinder B, the cylinder A that now does work starts to carry out expansion stroke, and after cylinder B scavenging of doing work completes, acting cylinder B exhaust valve 9 cuts out, and starts to acting cylinder B air feed for cylinder C.When arriving top dead center for cylinder C piston 7 air feed, acting cylinder B piston 6 does not also arrive lower dead center, now due to the drag effect of acting cylinder B intake valve 8, acting cylinder B internal air pressure is greater than for the air pressure in cylinder C and air supply pipe 5, so can not intake valve be closed, start to decline along with for cylinder C piston 7, start to decline for cylinder C and air supply pipe 5 internal air pressure, when equaling acting cylinder B internal air pressure for cylinder C and air supply pipe 5 internal air pressure, close acting cylinder B intake valve 8, open for cylinder C intake valve 4, the cylinder A expansion stroke that now does work also will draw to an end simultaneously.The cylinder A that does work afterwards is exhausted stroke, carries out aspirating stroke for cylinder C, and acting cylinder B carries out compression stroke.Continue to run, acting cylinder A and acting cylinder B action are exchanged, and start to acting cylinder A scavenging and air feed for cylinder C again.
Claims (1)
1. one kind is provided with the cylinder type pressurized machine of two section push rod and scavenging advance angle, it is characterized in that: devising a kind of two section push rod (2) for cylinder intake valve (4) upper end, this push rod is formed by two sections, epimere push rod (10) is a stepped ramp type cylindrical body, upper end contacts with for cylinder cam (3), hypomere push rod (12) is a cylindrical body containing cylindrical hole, and under damping spring, deck (15) is rigidly connected with lower part (17) and valve spring; Epimere push rod (10) surface of contact (18) and hypomere push rod (12) surface of contact (19) substantial contact; Guide rod (14) inserts in guide hole (16), without substantial contact; Intermediate buffering spring upper blocking seat (13) surface contacts with damping spring (11) upper surface; Under damping spring, deck (15) surface contacts with damping spring (11) lower surface; Crank rotation advance angle α is being added for cylinder lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420756465.5U CN204283604U (en) | 2014-07-04 | 2014-12-06 | Be provided with the cylinder type pressurized machine of two section push rod and scavenging advance angle |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014203679471 | 2014-07-04 | ||
| CN201420367947 | 2014-07-04 | ||
| CN201420756465.5U CN204283604U (en) | 2014-07-04 | 2014-12-06 | Be provided with the cylinder type pressurized machine of two section push rod and scavenging advance angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204283604U true CN204283604U (en) | 2015-04-22 |
Family
ID=52866773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420756465.5U Active CN204283604U (en) | 2014-07-04 | 2014-12-06 | Be provided with the cylinder type pressurized machine of two section push rod and scavenging advance angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204283604U (en) |
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2014
- 2014-12-06 CN CN201420756465.5U patent/CN204283604U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |