CN103161537B - A kind of internal-combustion engine - Google Patents
A kind of internal-combustion engine Download PDFInfo
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- CN103161537B CN103161537B CN201110410535.2A CN201110410535A CN103161537B CN 103161537 B CN103161537 B CN 103161537B CN 201110410535 A CN201110410535 A CN 201110410535A CN 103161537 B CN103161537 B CN 103161537B
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- tappet
- combustion engine
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- tappet mechanism
- slideway
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Abstract
The invention provides a kind of internal-combustion engine, comprise the cylinder head being provided with slideway; Be arranged on oil spout side tappet mechanism in described slideway and air inlet or exhaust side tappet mechanism; Described oil spout side tappet mechanism and air inlet or exhaust side tappet mechanism include: be provided with grease channel, and the tappet matched with described slideway, the sidewall of described tappet is provided with the groove extended along its axial direction, be arranged on the bottom of described tappet, and the positioning shaft of the axis perpendicular of its axis and described tappet, be set in the outside of described positioning shaft and the roller that can rotate along its axis; Also comprise and being set on described tappet, and be provided with the jump ring of positioning strip, described positioning strip and described fit depressions, and described jump ring is fitted by tension force and described slideway.When the tappet mechanism of this internal-combustion engine break down need to change time, only need described cylinder head to disassemble, can be easy by its unmount, be convenient to change.Present invention also offers a kind of tappet mechanism.
Description
Technical field
The present invention relates to technical field of internal combustion engines, more particularly, relate to a kind of internal-combustion engine.
Background technique
The function of tappet is that the thrust of cam is passed to push rod (or valve stem), and bears the lateral force applied when camshaft rotates.Tappet mechanism plays and controls effect such as gas turnover cylinder and in good time oil spout etc. in the working procedure of internal-combustion engine.
Please refer to the structural representation that accompanying drawing 1, Fig. 1 is a kind of tappet mechanism of the prior art.This tappet mechanism is divided into hydraulic tappet and valve tappet, and both include roller 101, roller bush 102, roller pin 103 and tappet 104.But, be connected with the plunger of high pressure oil pump in the tappet 104 of hydraulic tappet by locking nut 105, carried out the oil spout of controlling combustion engine by the position controlling plunger.Valve tappet is hinged with push rod 107 sphere by the top 106 be arranged on tappet 104, and the top of this push rod 107 is provided with the push rod jacking block 108 for connecting ball head seat.
Please refer to the distribution device schematic diagram that accompanying drawing 2, Fig. 2 is the valve tappet in the internal-combustion engine of the tappet mechanism had in Fig. 1, this distribution device comprises camshaft 201, tappet mechanism 202, push rod 203, rocker arm assembly 204, valve 205; When the work cycle of cylinder need valve 205 to open take a breath time, rotated by driving mechanism drive cam shaft 201 by bent axle, the convex portion of the cam on camshaft 201 is made to promote rocker arm assembly 204 rotation by tappet mechanism 202, push rod 203, ball cup; the other end of rocker arm assembly 204 just pushes valve 205 downwards open, makes spring compress further simultaneously.After the summit of the convex portion of cam turns over tappet mechanism 202, just reduce the thrust to tappet mechanism 202 gradually, valve 205 aperture under the effect of spring tension reduces, gradually until finally close.Piston 206 is in pressurized air and working stroke, and valve 205 is tight closing under the effect of spring tension.
Please refer to the structural representation that accompanying drawing 3, Fig. 3 is the fuel oil supply system of hydraulic tappet in the internal-combustion engine of the tappet mechanism had in Fig. 1, this fuel oil supply system comprises: camshaft 301, tappet mechanism 302, high pressure oil pump 307 and oil sprayer; High pressure oil pump 307 is connected with tappet mechanism 302 by plunger, when tappet mechanism 302 is elected upwards by the convex portion of the cam on camshaft 301, plunger moves on also following, now plunger applies a pressure to high pressure oil pump 307, when pressure is enough large, fuel oil in high pressure oil pump 307 is pressed into the oil sprayer be connected with its oil outlet, completes oil spout to make oil sprayer.
But tappet mechanism of the prior art and rocker arm assembly lay respectively in body and cylinder head, install very complicated, when tappet mechanism break down need change time, dismantle more difficult, be not easy to the replacing of tappet mechanism.
In sum, how to provide a kind of internal-combustion engine, with realize when its tappet mechanism break down need to change time, dismounting easily, is convenient to change, and is current those skilled in the art technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of internal-combustion engine, with realize when its tappet mechanism break down need to change time, dismounting easily, is convenient to change.
In order to achieve the above object, the invention provides following technological scheme:
A kind of internal-combustion engine, comprising:
Be provided with the cylinder head of slideway;
Be arranged on oil spout side tappet mechanism in described slideway and air inlet or exhaust side tappet mechanism;
Described oil spout side tappet mechanism and air inlet or exhaust side tappet mechanism include:
Be provided with grease channel, and the tappet matched with described slideway, the sidewall of described tappet is provided with the groove extended along its axial direction,
Be arranged on the bottom of described tappet, and the positioning shaft of the axis perpendicular of its axis and described tappet,
Be set in the outside of described positioning shaft and the roller that can rotate along its axis; Also comprise:
Be set on described tappet, and be provided with the jump ring of positioning strip, described positioning strip and described fit depressions, and described jump ring is fitted by tension force and described slideway.
Preferably, in above-mentioned internal-combustion engine, the top of described oil spout side tappet mechanism is connected with the first push rod, it is hinged that the joint of this first push rod and described oil spout side tappet mechanism forms sphere, and a free end of the top of described first push rod and the first rocker arm assembly is hinged, this first rocker arm assembly is fulcrum with intermediate position, has two free ends; Another free end of described first rocker arm assembly is connected with oil pump and the incorporated Unit injector of nozzle.
Preferably, in above-mentioned internal-combustion engine, the top of described tappet is also provided with for the hinged described oil spout side tappet mechanism of sphere and described first push rod, or the top of the second push rod of described air inlet or exhaust side tappet mechanism and described internal-combustion engine.
Preferably, in above-mentioned internal-combustion engine, the center of described top is provided with the through hole extended to bottom from top, and the bottom position place that the top of described tappet is positioned at described top is provided with the oil storage hole be connected with described through hole.
Preferably, in above-mentioned internal-combustion engine, the air inlet of described internal-combustion engine or the valve number of exhaust side are 2, described valve is connected with the second rocker arm assembly of described internal-combustion engine by valve seat, and two described valves lay respectively at the two ends of described valve seat.
In internal-combustion engine provided by the invention, comprise the cylinder head being provided with slideway; Be arranged on oil spout side tappet mechanism in described slideway and air inlet or exhaust side tappet mechanism; Described oil spout side tappet mechanism and air inlet or exhaust side tappet mechanism include: be provided with grease channel, and the tappet matched with described slideway, the sidewall of described tappet is provided with the groove extended along its axial direction, be arranged on the bottom of described tappet, and the positioning shaft of the axis perpendicular of its axis and described tappet, be set in the outside of described positioning shaft and the roller that can rotate along its axis; Also comprise and being set on described tappet, and be provided with the jump ring of positioning strip, described positioning strip and described fit depressions, and described jump ring is fitted by tension force and described slideway.Because the described oil spout side tappet mechanism of internal-combustion engine provided by the invention and air inlet or exhaust side tappet mechanism are by the positioning strip of described jump ring and the described fit depressions on it, the slideway of the tension force of described jump ring and described cylinder head is utilized to fit.When described oil spout side tappet mechanism and air inlet or exhaust side tappet mechanism break down need to change time, described cylinder head is only needed to disassemble, the connected parts in top of described oil spout side tappet mechanism and air inlet or exhaust side tappet mechanism are taken apart, described oil spout side tappet mechanism and air inlet or exhaust side tappet mechanism can be taken out in described slideway, eliminate in prior art by trouble that tappet mechanism could unload by dismounting body.
In sum, internal-combustion engine provided by the invention, achieve when its tappet mechanism break down need to change time, dismounting easily, is convenient to change.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of tappet mechanism of the prior art;
Fig. 2 is the distribution device schematic diagram of the valve tappet in the internal-combustion engine of the tappet mechanism had in Fig. 1;
Fig. 3 is the structural representation of the fuel oil supply system of hydraulic tappet in the internal-combustion engine of the tappet mechanism had in Fig. 1;
Fig. 4 is the structural representation of the oil spout side of the internal-combustion engine that the embodiment of the present invention provides;
Fig. 5 is the air inlet of the internal-combustion engine that the embodiment of the present invention provides or the structural representation of exhaust side;
Fig. 6 is the sectional structure schematic diagram of the tappet mechanism that the embodiment of the present invention provides;
Fig. 7 is the structural representation of the tappet mechanism of Fig. 6;
Fig. 8 is the structural representation of the parts 406 in Fig. 4-6.
Embodiment
Embodiments provide a kind of internal-combustion engine, achieve when its tappet mechanism break down need to change time, dismounting easily, is convenient to change.
For making the object of the embodiment of the present invention, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to accompanying drawing 1-3, Fig. 1 is the structural representation of a kind of tappet mechanism of the prior art; Fig. 2 is the distribution device schematic diagram of the valve tappet in the internal-combustion engine of the tappet mechanism had in Fig. 1; Fig. 3 is the structural representation of the fuel oil supply system of hydraulic tappet in the internal-combustion engine of the tappet mechanism had in Fig. 1.
In prior art, tappet mechanism is divided into hydraulic tappet and valve tappet, and both include roller 101, roller bush 102, roller pin 103 and tappet 104.But, be connected with the plunger of high pressure oil pump in the tappet 104 of hydraulic tappet by locking nut 105, carried out the oil spout of controlling combustion engine by the position controlling plunger.Valve tappet is hinged with push rod 107 sphere by the top 106 be arranged on tappet 104, and the top of this push rod 107 is provided with the push rod jacking block 108 for connecting ball head seat.
The distribution device of the valve tappet in the internal-combustion engine of prior art comprises: camshaft 201, tappet mechanism 202, push rod 203, rocker arm assembly 204, valve 205; When the work cycle of cylinder need valve 205 to open take a breath time, rotated by driving mechanism drive cam shaft 201 by bent axle, the convex portion of the cam on camshaft 201 is made to promote rocker arm assembly 204 rotation by tappet mechanism 202, push rod 203, ball cup; the other end of rocker arm assembly 204 just pushes valve 205 downwards open, makes spring compress further simultaneously.After the summit of the convex portion of cam turns over tappet mechanism 202, just reduce the thrust to tappet mechanism 202 gradually, valve 205 aperture under the effect of spring tension reduces, gradually until finally close.Piston 206 is in pressurized air and working stroke, and valve 205 is tight closing under the effect of spring tension.
The fuel oil supply system of the hydraulic tappet in the internal-combustion engine of prior art comprises: camshaft 301, tappet mechanism 302, high pressure oil pump 307 and oil sprayer; High pressure oil pump 307 is connected with tappet mechanism 302 by plunger, when tappet mechanism 302 is elected upwards by the convex portion of the cam on camshaft 301, plunger moves on also following, now plunger applies a pressure to high pressure oil pump 307, when pressure is enough large, fuel oil in high pressure oil pump 307 is pressed into the oil sprayer be connected with its oil outlet, completes oil spout to make oil sprayer.
But above-mentioned tappet mechanism and rocker arm assembly lay respectively in body and cylinder head, install very complicated, when tappet mechanism break down need to change time, need dismounting body and inner corresponding parts thereof tappet mechanism could be unloaded, dismantle more difficult, be not easy to the replacing of tappet mechanism.
Please refer to accompanying drawing 4-8, Fig. 4 is the structural representation of the oil spout side of the internal-combustion engine that the embodiment of the present invention provides; Fig. 5 is the air inlet of the internal-combustion engine that the embodiment of the present invention provides or the structural representation of exhaust side; Fig. 6 is the sectional structure schematic diagram of the tappet mechanism that the embodiment of the present invention provides; Fig. 7 is the structural representation of the tappet mechanism of Fig. 6; Fig. 8 is the structural representation of the parts 406 in Fig. 4-6.
In the internal-combustion engine that the embodiment of the present invention provides, comprise the cylinder head being provided with slideway; Be arranged on oil spout side tappet mechanism 401 in described slideway and air inlet or exhaust side tappet mechanism 501; Described oil spout side tappet machine 401 structure and air inlet or exhaust side tappet mechanism 501 include: be provided with grease channel 31, and the tappet 3 matched with described slideway, the sidewall of described tappet 3 is provided with the groove 33 extended along its axial direction, be arranged on the bottom of described tappet 3, and the positioning shaft 1 of the axis perpendicular of its axis and described tappet 3, be set in the outside of described positioning shaft 1 and the roller 2 that can rotate along its axis; Also comprise and being set on described tappet 3, and be provided with the jump ring 406 of positioning strip, described positioning strip matches with described groove 33, and described jump ring 406 is fitted by tension force and described slideway.Because the described oil spout side tappet mechanism 401 of internal-combustion engine provided by the invention and air inlet or exhaust side tappet mechanism 501 are matched with the described groove 33 on it by the positioning strip of described jump ring 406, the tension force of described jump ring 406 and the slideway of described cylinder head is utilized to fit.When described oil spout side tappet mechanism 401 and air inlet or exhaust side tappet mechanism 501 break down need to change time, described cylinder head is only needed to disassemble, the connected parts in top of described oil spout side tappet mechanism 401 and air inlet or exhaust side tappet mechanism 501 are taken apart, described oil spout side tappet mechanism 401 and air inlet or exhaust side tappet mechanism 501 can be taken out in described slideway, eliminate in prior art by trouble that tappet mechanism could unload by dismounting body.
In sum, internal-combustion engine provided by the invention, achieve when its tappet mechanism break down need to change time, dismounting easily, is convenient to change.
Moreover the tappet mechanism of the internal-combustion engine that the embodiment of the present invention provides is integrated in cylinder head body interior, and locates with jump ring, structure is simple, simultaneously jump ring also has the effect of guiding, and tappet mechanism can only be moved up and down, and decreases its rotation in cylinder head slideway; And the engine performance that provides of the embodiment of the present invention is reliable, installation and maintenance are very convenient, can working life of elongated component effectively.
Concrete, in above-mentioned internal-combustion engine, the top of described oil spout side tappet mechanism 401 is connected with the first push rod 402, it is hinged that this first push rod 402 and the joint of described oil spout side tappet mechanism 401 form sphere, and the top of described first push rod 402 and a free end of the first rocker arm assembly 403 are hinged, this first rocker arm assembly 403 is fulcrum with intermediate position, has two free ends; Another free end of described first rocker arm assembly 403 is connected with oil pump and the incorporated Unit injector 405 of nozzle, make the linkage structure of described oil spout side tappet mechanism 401 and its Unit injector 405 and described air inlet or exhaust side tappet mechanism 501 identical with the linkage structure of the valve 504 of described internal-combustion engine, both can be changed mutually; Secondly, the high pressure oil pump 307 that is connected with oil spout side tappet mechanism 401 of the prior art and oil sprayer change into oil pump and the incorporated Unit injector 405 of nozzle by this internal-combustion engine, make its structure simple, reduce the fault point of structure.
In order to optimize technique scheme further, the top of described tappet 3 is also provided with for sphere hinged described oil spout side tappet mechanism 401 and described first push rod 402, or the top 5 of the second push rod 502 of described air inlet or exhaust side tappet mechanism 501 and described internal-combustion engine, this sphere is hinged makes described oil spout side tappet mechanism 401 and described first push rod 402, or the second push rod 502 of described air inlet or exhaust side tappet mechanism 501 and described internal-combustion engine all directions spatially can carry out relative movement.
Preferably, in above-mentioned internal-combustion engine, the center of described top 5 is provided with the through hole extended to bottom from top, and the bottom position place that the top of described tappet 3 is positioned at described top 5 is provided with the oil storage hole 32 be connected with described through hole, in the work process of this internal-combustion engine, described tappet 3 can shake, the lubricant oil being positioned at described oil storage hole 32 is driven to shake up and down, lubricant oil is made to enter the through hole of described top 5, thus lubricate to described top 5 and with the parts that top 5 contacts, improve the service behaviour of this internal-combustion engine.
Concrete, the air inlet of described internal-combustion engine or valve 504 number of exhaust side are 2, described valve 504 is connected with the second rocker arm assembly 503 of described internal-combustion engine by valve seat, two described valves 504 lay respectively at the two ends of described valve seat, certainly, number and the position of described valve 504 do not limit, and can also be other numbers and position, only otherwise affect its function.
In tappet mechanism provided by the invention, comprise the tappet 3 being provided with grease channel 31; Be arranged on the bottom of described tappet 3, and the positioning shaft 1 of the axis perpendicular of its axis and described tappet 3; Be set in the outside of described positioning shaft 1 and the roller 2 that can rotate along its axis; Described tappet 3 matches with the slideway in the cylinder head of described internal-combustion engine, and the sidewall of described tappet 3 is provided with extends along its axial direction, and the groove 33 matched with the positioning strip of described jump ring 406.Tappet mechanism provided by the invention is integrated among cylinder head by described jump ring 406, make when its tappet mechanism break down need to change time, dismounting easily, is convenient to change; Secondly, its structure is simple, reliable performance, and installation and maintenance are very convenient, can working life of elongated component effectively, improves the reliability with the internal-combustion engine of its structure.
Concrete, the top of described tappet 3 is provided with for the hinged top 5 of sphere.
Preferably, in above-mentioned tappet mechanism, the center of described top 5 is provided with the through hole extended to bottom from top, and the bottom position place that the top of described tappet 3 is positioned at described top 5 is provided with the oil storage hole 32 be connected with described through hole; In the work process of internal-combustion engine, described tappet 3 can shake, and drives the lubricant oil being positioned at described oil storage hole 32 to shake up and down, makes lubricant oil enter the through hole of described top 5, thus lubricate to described top 5 and with the parts that top 5 contacts, improve the service behaviour of internal-combustion engine.
Compared with prior art, do not comprise in tappet mechanism provided by the invention and be arranged between described positioning shaft 1 and roller 2, manufacture the roller bush of relative complex, decrease the manufacturing process of this tappet mechanism, make its structure simple.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. an internal-combustion engine, is characterized in that, comprising:
Be provided with the cylinder head of slideway;
Be arranged on oil spout side tappet mechanism (401) in described slideway and air inlet or exhaust side tappet mechanism (501);
Described oil spout side tappet mechanism (401) and air inlet or exhaust side tappet mechanism (501) include:
Be provided with grease channel (31), and the tappet (3) matched with described slideway, the sidewall of described tappet (3) is provided with the groove (33) extended along its axial direction,
Be arranged on the bottom of described tappet (3), and the positioning shaft (1) of the axis perpendicular of its axis and described tappet (3),
Be set in the outside of described positioning shaft (1) and the roller (2) that can rotate along its axis; Also comprise:
Be set on described tappet (3), and be provided with the jump ring (406) of positioning strip, described positioning strip matches with described groove (33), and described jump ring (406) is fitted by tension force and described slideway.
2. internal-combustion engine according to claim 1, is characterized in that,
The top of described oil spout side tappet mechanism (401) is connected with the first push rod (402), it is hinged that this first push rod (402) and the joint of described oil spout side tappet mechanism (401) form sphere, and the top of described first push rod (402) and a free end of the first rocker arm assembly (403) are hinged, this first rocker arm assembly (403) is fulcrum with intermediate position, has two free ends; Another free end of described first rocker arm assembly (403) is connected with oil pump and the incorporated Unit injector of nozzle (405).
3. internal-combustion engine according to claim 2, it is characterized in that, the top of described tappet (3) is also provided with for hinged described oil spout side tappet mechanism (401) of sphere and described first push rod (402), or the top (5) of second push rod (502) of described air inlet or exhaust side tappet mechanism (501) and described internal-combustion engine.
4. internal-combustion engine according to claim 3, it is characterized in that, the center of described top (5) is provided with the through hole extended to bottom from top, and the bottom position place that the top of described tappet (3) is positioned at described top (5) is provided with the oil storage hole (32) be connected with described through hole.
5. internal-combustion engine according to claim 1, it is characterized in that, the air inlet of described internal-combustion engine or valve (504) number of exhaust side are 2, described valve (504) is connected with second rocker arm assembly (503) of described internal-combustion engine by valve seat, and two described valves (504) lay respectively at the two ends of described valve seat.
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| CN201110410535.2A CN103161537B (en) | 2011-12-09 | 2011-12-09 | A kind of internal-combustion engine |
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| CN201110410535.2A CN103161537B (en) | 2011-12-09 | 2011-12-09 | A kind of internal-combustion engine |
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| CN103161537B true CN103161537B (en) | 2015-10-28 |
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| CN105332750B (en) * | 2015-10-26 | 2018-04-10 | 无锡市永亿精密铸造有限公司 | Valve stem |
| CN105351024B (en) * | 2015-10-27 | 2018-07-06 | 无锡市永亿精密铸造有限公司 | Offer the valve stem of lubricating oil oil strain slot |
| CN107387188A (en) * | 2017-08-31 | 2017-11-24 | 中车戚墅堰机车有限公司 | A kind of diesel engine cam driven member bearing assembly and its supporting way |
| CN115492661A (en) * | 2022-09-28 | 2022-12-20 | 中车资阳机车有限公司 | Diesel engine valve mechanism |
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| CN201092919Y (en) * | 2007-09-13 | 2008-07-30 | 成都市易控高科电喷有限责任公司 | Lubrication mechanism of stiff pole for fuel injection pump |
| CN201133261Y (en) * | 2007-12-29 | 2008-10-15 | 广西玉柴机器股份有限公司 | Engine prop column structure |
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| CN202360161U (en) * | 2011-12-09 | 2012-08-01 | 淄博柴油机总公司 | Internal combustion engine and tappet mechanism thereof |
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| JP3612633B2 (en) * | 1995-11-21 | 2005-01-19 | ヤンマー株式会社 | Lubrication structure of unit injector |
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| CN101605966A (en) * | 2006-12-18 | 2009-12-16 | 马勒国际有限公司 | The anti-rotation location tappet of valve drive |
| CN201092919Y (en) * | 2007-09-13 | 2008-07-30 | 成都市易控高科电喷有限责任公司 | Lubrication mechanism of stiff pole for fuel injection pump |
| CN201133261Y (en) * | 2007-12-29 | 2008-10-15 | 广西玉柴机器股份有限公司 | Engine prop column structure |
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Address after: No. 118, Yumin Road, Zibo high tech Zone, Shandong Province Patentee after: Zichai Power Co., Ltd. Address before: 255000 28 Huguang Road, Hutian Town, Zhangdian District, Zibo, Shandong Patentee before: Zibo Diesel Engine Parent Company |
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