CN105257422A - Cylinder cover system capable of adjusting compression ratio for engine and internal combustion engine with cylinder cover system - Google Patents
Cylinder cover system capable of adjusting compression ratio for engine and internal combustion engine with cylinder cover system Download PDFInfo
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- CN105257422A CN105257422A CN201510615224.8A CN201510615224A CN105257422A CN 105257422 A CN105257422 A CN 105257422A CN 201510615224 A CN201510615224 A CN 201510615224A CN 105257422 A CN105257422 A CN 105257422A
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- cylinder cover
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Abstract
The invention discloses a cylinder cover system capable of adjusting the compression ratio for an engine. The cylinder cover system comprises a main cylinder cover, a movable cylinder cover, an air inlet valve, an air exhausting valve and an acting part, wherein the main cylinder cover is connected with a piston cylinder body and provided with an air inlet passage and an air exhausting passage; the movable cylinder cover is arranged in the main cylinder cover and provided with a secondary air inlet passage and a second air exhausting passage corresponding to the air inlet passage; the space between the movable cylinder cover and a piston in the piston cylinder body is a combustion chamber; the air inlet valve and the air exhausting valve are arranged in the movable cylinder cover and used for sealing or opening the secondary air inlet passage or the secondary air exhausting passage; the acting part is connected with the movable cylinder cover and acts to drive the movable cylinder cover to move vertically. The compression ratio can be changed without moving the whole cylinder cover, and an original air distribution system does not need to be changed.
Description
Technical field
The present invention relates to I. C. engine technical field, particularly relate to a kind of engine variable compression ratio cylinder cap system and there is the internal-combustion engine of this cylinder cap system.
Background technique
Compression ratio is the ratio of cylinder total volume and combustion chamber volume, and when it represents that piston moves to top dead center by lower dead center, cylinder interior gas is by the degree compressed, and being the important parameter of measured engine performance, is affect one of most important factor of engine efficiency.
Changeable compression ratio technique is mainly for a kind of technology of supercharged engine.Fixing compression ratio can not give full play to the performance of motor.When Smaller load, low-speed running, the thermal efficiency of motor is low, correspondingly comprehensive comparison is poor, at this moment can with larger compression ratio, and large load, when running up, if compression ratio is too high, is then easy to pinking occurs and produces very large heat load and mechanical load, at this moment can with less compression ratio.Along with the change of load regulates compression ratio continuously, the potentiality of motor can be excavated to greatest extent, make it in whole conditioned area, effectively improve the thermal efficiency, and then improve the combination property of motor.
In prior art, employing is had to make engine cylinder cover move integrally to change piston when rising to top dead center, the combustion chamber volume between piston and cylinder cap thus change compression ratio.But cylinder cap being moved integrally not only implement complicated and cylinder cap to be connected with gas handling system, cylinder cap moves integrally and gas handling system must be made to be involved, thus the integral layout of motor is also changed comparatively greatly, is not suitable for manufacture and usage needs.
Summary of the invention
Technical problem to be solved by this invention is, for the above-mentioned deficiency of prior art, proposes a kind ofly change less to original distribution engine and can change the engine variable compression ratio cylinder cap system of engine compression ratio simultaneously.
The technological scheme that the present invention solves the employing of its technical problem is that propose a kind of engine variable compression ratio cylinder cap system, it comprises:
Master cylinder cover, is connected with piston/cylinder; Described master cylinder cover offers gas-entered passageway and exhaust passage;
Active cover, is arranged in master cylinder cover, described active cover offers in the corresponding secondary gas-entered passageway of gas-entered passageway and time exhaust passage; Space between described active cover and piston/cylinder inner carrier is firing chamber;
Intake valve, exhaust valve, be arranged in active cover, for closing or opening time gas-entered passageway or secondary exhaust passage;
Action piece, is connected with active cover; Described action piece action drives active cover to move up and down.
Further, also comprise: inlet camshaft, exhaust camshaft, intake valve top, exhaust valve top, intake rocker, exhaust rocker arm, air inlet column and exhaust column; Described air inlet column and intake valve top are arranged on the downside of intake rocker two end part respectively, and described exhaust column and exhaust valve top are arranged on the downside of exhaust rocker arm two end part respectively; Described inlet camshaft or exhaust camshaft drive intake rocker or exhaust rocker arm to press down to make intake valve top or exhaust valve heading tape moves intake valve or exhaust valve is opened; Described action piece, also with air inlet column be vented column and is connected, when action piece drives active cover to move, drives air inlet column simultaneously and is vented column oppositely movement.
Further, described action piece inner and outer surface is all formed with screw thread, and described active cover outer surface and intake valve column, exhaust valve column outer surface are also formed with screw thread.
Further, described action piece is ring part, is sheathed on active cover outer surface.
Further, described action piece comprises the left action piece and right action piece that can be movable relatively, and described left action piece is connected with exhaust valve column with intake valve column, and described right action piece is connected with active cover.
The present invention also discloses a kind of internal-combustion engine, and it comprises above-mentioned cylinder cap system, the piston also comprising piston/cylinder and be arranged in piston/cylinder.
Hinge structure of the present invention has following beneficial effect:
1, compression ratio can be changed, without the need to changing original gas distribution system without the need to mobile overall cylinder cap;
2, structure realizes simple and stablizes.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention first preferred embodiment;
Fig. 2 is the structural representation of the present invention second preferred embodiment.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
The engine variable compression ratio cylinder cap system of the present embodiment, it comprises:
Master cylinder cover 100, is connected with piston/cylinder 10; Described master cylinder cover offers gas-entered passageway 110 and exhaust passage 120;
Active cover 200, is arranged in master cylinder cover, described active cover offers in the corresponding secondary gas-entered passageway 210 of gas-entered passageway and time exhaust passage 220; Space between described active cover and piston/cylinder inner carrier 20 is firing chamber 30;
Intake valve 300, exhaust valve 400, be arranged in active cover, for closing or opening time gas-entered passageway or secondary exhaust passage;
Action piece 500, is connected with active cover; Described action piece action drives active cover to move up and down.
In the present embodiment, part corresponding with piston in original cylinder cap is set to active cover, drives active cover move up and down thus change the volume of firing chamber between active cover and piston by an action piece, and then change compression ratio.
Owing to being provided with inlet and exhaust valve in active cover 200, if active cover moves, inlet and exhaust valve moves thereupon together, now can affect the action of original gas distribution system.For this reason, in the present embodiment, engine variable compression ratio cylinder cap system also comprises: inlet camshaft 310, exhaust camshaft 410, intake valve top 320, exhaust valve top 420, intake rocker 330, exhaust rocker arm 430, air inlet column 340 and exhaust column 440.
Inlet camshaft and exhaust camshaft are fixed on master cylinder cover, and air inlet column 340 and intake valve top 320 are arranged on the downside of intake rocker 330 two end part respectively, and exhaust column 440 is arranged on the downside of exhaust rocker arm 430 two end part with exhaust valve top 420 respectively; Inlet camshaft or exhaust camshaft drive intake rocker or exhaust rocker arm to press down to make intake valve top or exhaust valve heading tape moves intake valve or exhaust valve is opened.
In the action of opening intake valve or exhaust valve, air inlet column and the pillar of exhaust column as intake rocker and exhaust rocker arm action, if inlet and exhaust valve, along with after active cover moves up and down, can cause the action disequilibrium of intake and exhaust rocking arm, affect intake and exhaust efficiency.
In the present embodiment, action piece 500, also with air inlet column be vented column and is connected, when action piece drives active cover to move, drives air inlet column simultaneously and is vented column oppositely movement.
Because air inlet column and exhaust column move and oppositely movement along with active cover, thus make intake rocker and exhaust rocker arm still be in preferably state of equilibrium when action, intake efficiency is unaffected.
In the first preferred embodiment shown in Fig. 1, action piece 500 is ring part, and its inner and outer surface is formed with positive/negative thread, and action piece 500 is sheathed on active cover outer surface; What active cover and air inlet column were corresponding with on exhaust column is also provided with screw thread.Rotational action part 500 thus make active cover increase or decline, meanwhile, namely air inlet column and exhaust column reversing motion, also decline or rise.
In the second preferred embodiment shown in Fig. 2, action piece 500 is divided into the left action piece 510 and right action piece 520 that can be movable relatively, and left action piece 510 is connected with exhaust valve column with intake valve column, and right action piece 520 is connected with active cover.When the relative movement of left and right moving workpiece, namely drive the active cover and air inlet column and the relative movement of exhaust column that are attached thereto.
Those skilled in the art can design different structures according to actual state, make active cover action as long as meet action piece action and make air inlet column and the action of exhaust column opposite direction.
The present invention also discloses a kind of internal-combustion engine with above-mentioned cylinder cap system, its piston also comprising piston/cylinder and be arranged in piston/cylinder.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (6)
1. an engine variable compression ratio cylinder cap system, is characterized in that: comprising:
Master cylinder cover, is connected with piston/cylinder; Described master cylinder cover offers gas-entered passageway and exhaust passage;
Active cover, is arranged in master cylinder cover, described active cover offers in the corresponding secondary gas-entered passageway of gas-entered passageway and time exhaust passage; Space between described active cover and piston/cylinder inner carrier is firing chamber;
Intake valve, exhaust valve, be arranged in active cover, for closing or opening time gas-entered passageway or secondary exhaust passage;
Action piece, is connected with active cover; Described action piece action drives active cover to move up and down.
2. engine variable compression ratio cylinder cap system according to claim 1, is characterized in that: also comprise: inlet camshaft, exhaust camshaft, intake valve top, exhaust valve top, intake rocker, exhaust rocker arm, air inlet column and exhaust column; Described air inlet column and intake valve top are arranged on the downside of intake rocker two end part respectively, and described exhaust column and exhaust valve top are arranged on the downside of exhaust rocker arm two end part respectively; Described inlet camshaft or exhaust camshaft drive intake rocker or exhaust rocker arm to press down to make intake valve top or exhaust valve heading tape moves intake valve or exhaust valve is opened; Described action piece, also with air inlet column be vented column and is connected, when action piece drives active cover to move, drives air inlet column simultaneously and is vented column oppositely movement.
3. engine variable compression ratio cylinder cap system according to claim 2, is characterized in that: described action piece inner and outer surface is all formed with screw thread, and described active cover outer surface and intake valve column, exhaust valve column outer surface are also formed with screw thread.
4. engine variable compression ratio cylinder cap system according to claim 3, is characterized in that: described action piece is ring part, is sheathed on active cover outer surface.
5. engine variable compression ratio cylinder cap system according to claim 2, it is characterized in that: described action piece comprises the left action piece and right action piece that can be movable relatively, described left action piece is connected with exhaust valve column with intake valve column, and described right action piece is connected with active cover.
6. an internal-combustion engine, is characterized in that: comprise the engine variable compression ratio cylinder cap system described in any one of claim 1 to 5, the piston also comprising piston/cylinder and be arranged in piston/cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510615224.8A CN105257422A (en) | 2015-09-24 | 2015-09-24 | Cylinder cover system capable of adjusting compression ratio for engine and internal combustion engine with cylinder cover system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510615224.8A CN105257422A (en) | 2015-09-24 | 2015-09-24 | Cylinder cover system capable of adjusting compression ratio for engine and internal combustion engine with cylinder cover system |
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| Publication Number | Publication Date |
|---|---|
| CN105257422A true CN105257422A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510615224.8A Pending CN105257422A (en) | 2015-09-24 | 2015-09-24 | Cylinder cover system capable of adjusting compression ratio for engine and internal combustion engine with cylinder cover system |
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| CN (1) | CN105257422A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483271A (en) * | 2020-11-18 | 2021-03-12 | 中车工业研究院有限公司 | Engine and control method thereof |
| CN112483267A (en) * | 2020-11-18 | 2021-03-12 | 中车工业研究院有限公司 | Homogeneous premixed combustion engine and control method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03258930A (en) * | 1990-03-08 | 1991-11-19 | Yamaha Motor Co Ltd | Internal combustion engine |
-
2015
- 2015-09-24 CN CN201510615224.8A patent/CN105257422A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03258930A (en) * | 1990-03-08 | 1991-11-19 | Yamaha Motor Co Ltd | Internal combustion engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483271A (en) * | 2020-11-18 | 2021-03-12 | 中车工业研究院有限公司 | Engine and control method thereof |
| CN112483267A (en) * | 2020-11-18 | 2021-03-12 | 中车工业研究院有限公司 | Homogeneous premixed combustion engine and control method thereof |
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