CN1730918A - Gas distribution mechanism of piston type four-stroke engine - Google Patents
Gas distribution mechanism of piston type four-stroke engine Download PDFInfo
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- CN1730918A CN1730918A CN200510044451.6A CN200510044451A CN1730918A CN 1730918 A CN1730918 A CN 1730918A CN 200510044451 A CN200510044451 A CN 200510044451A CN 1730918 A CN1730918 A CN 1730918A
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- gas
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- wedge shape
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Abstract
The present invention discloses one kind of gas distributing mechanism for piston type four stroke engine. It has cylinder head, and features the gas intake manifold and gas exhaust manifold in the cylinder head with wedged gas valve seat cavity, wedged valve plate inside the wedged gas valve seat cavity and electromagnetic executing device connected to the wedged valve plate. Compared with available technology, the present invention has simple structure, expanded gas valve opening area, fluent gas intake and gas exhaust and raised efficiency. In addition, the electronic control is relatively simple in realizing precise gas distribution timing and gas valve opening, and has positive significance in lowering power consumption, reducing exhaust and raising engine efficiency.
Description
Technical field
The present invention relates to a kind of distribution device of piston four stroke engine, belong to internal combustion engine part.
Background technique
Up to now, the distribution device of conventional piston formula four stroke engine, all be with camshaft, tappet, rocking arm or the time rule chain/time rule belt drives overhead camshaft pure mechanical structure that promotes the horn-like valve of rod-type finish, its shortcoming is: 1, complex structure, part are various, adopt the structure of many Valves Technology (as 4 valves, 5 valves) complicated more especially recently; 2, the inlet and outlet opening area is little, and stopping owing to horn-like valve head, air-flow can only flow by the slit (curtain district) that changes between valve and valve seat, and in addition, the inlet and outlet manifold inner space of valve head rod in cylinder head also produces air-flow and stop.More than many reasons, cause inlet and outlet stream to have some setbacks easily, scavenging efficiency is low.In recent years, in order to adapt to different operating modes, satisfy the requirement of the Abgasgesetz of increasingly stringent, cut down the consumption of energy, raise the efficiency, modern advanced piston four stroke engine is finished the correction of valve timing and valve opening by complex mechanical construction more, has not only increased manufacture difficulty and cost, and reduced the reliability of motor, when distribution device broke down, fragile motor can cause motor to be scrapped when serious.
Summary of the invention
Purpose of the present invention is intended to overcome the defective that prior art exists, and provides a kind of simple in structure, and exhaust is smooth and easy, controls the distribution device of the piston four stroke engine of accurate automatically controlled guiding valve air gate type structure.
Technological scheme of the present invention is: a kind of distribution device of piston four stroke engine, it has cylinder head, and characteristics are to be provided with wedge shape valve seat chamber on the inlet and outlet manifold in cylinder head, in shape valve seat chamber, be provided with the wedge shape valve plate, connect Electromagnetically actuated device on the wedge shape valve plate.
The present invention replaces existing engine valve actuating mechanism to drive the wedge shape valve plate by electronically controlled Electromagnetically actuated device, compared with prior art has substantial characteristics and obvious improvement:
1, simple in structure: cancellation camshaft, tappet rocking arm or the time rule chain/time rule belt, overhead camshaft and tappet rod type air valve structure, the corresponding designs simplification that makes motor and cylinder head, motor are along the shorten length of crankshaft center line direction, reduce greatly along the height of piston axis direction;
2, valve openings enlarged areas: only use 2 (advance, arrange each one) valve valve blocks, the inlet and outlet opening area is improved greatly, unobstructed on air-flow path during the valve standard-sized sheet, do not have the valve head rod in the inlet and outlet manifold space in the cylinder head yet and stop, improved smooth and easy degree of inlet and outlet and efficient;
3, control accurately: electronic control easily realizes the stepless variation control of accurate valve timing and valve opening;
4, when distribution device breaks down, not fragile motor.
Below in conjunction with drawings and Examples the present invention is at length explained.
Description of drawings
Fig. 1-structural representation of the present invention.
The explanation of accompanying drawing drawing:
1 Electromagnetically actuated device, 2 sledgers, 3 wedge shape valve plates, 4 cylinder heads, 5 wedge shape valve seat chambeies, 6 inlet and outlet manifolds.
Embodiment
Referring to Fig. 1, it is on the inlet and outlet manifold 6 in engine cylinder head 4 wedge shape valve seat chamber 5 to be set, and wedge shape valve plate 3 is installed in wedge shape valve seat chamber 5, and wedge shape valve plate 3 connects Electromagnetically actuated device 1 by pull bar.
During work, by ECU SC sigmal control respective electrical source module, drive Electromagnetically actuated device 1 with impulsive current and do forward and reverse motion, push-and-pull wedge shape valve plate 3 is reciprocating in wedge shape valve seat chamber 5, thereby opens, closes inlet and outlet.The size of valve opening is corresponding with the modulation pulsewidth of impulsive current, and valve timing is guaranteed by phase.
Comparatively speaking, the present invention needs maximum power to open the exhaust valve plate at moment before exhaust begins, and exhaust valve closing and intake valve open and close does not need very big power.Like this, can one maximum value before beginning, valve event be arranged in a flash by the electric current that ECU controls Electromagnetically actuated device 1, make that valve begins to move fast, keep one or several less relatively pulsewidth electric current to keep the motion state of valve then, one reverse peak current is arranged in a flash before valve event stops, making valve stop to move.
Relevant technologies data by retrieval, exhaust begins preceding moment, that is expansion working at the end, be limited to 0.6Mpa (diesel engine 0.2～0.5Mpa on the inner cylinder pressure, petrol engine 0.3～0.6Mpa), with a distribution device that adopts this patent, diameter is an example for the 80mm cylinder, set 30% (much larger than the present ratio) that its exhaust valve opening area accounts for the cylinder sectional area, its exhaust valve valve plate pressure is π R
2* 30%*0.6Mpa=3.14*4
2* 0.3*6Kg/cm
2≈ 90Kg, getting friction factor is 0.1, the actual valve pulling force of opening is 90*0.1 ≈ 9Kg, standard-sized sheet stroke＜40mm, for present existing Electromagnetically actuated device, no matter be to realize all on power or the speed of response that (present linear motor is very fast to be 35m/s, and starting torque is good; The electromagnet response is accomplished about 1ms).
Electromagnetically actuated device 1 can be linear motor or electromagnet etc.Wedge shape valve plate 3 should adopt high hardness, certain toughness is arranged, the made of high temperature resistant, low thermal expansion, as ceramet etc.In order to cooperate the shape of firing chamber, the lower end surface of valve plate can change to some extent, as concave etc.; In order to reduce the movement inertia of valve plate, increase structural strength, at the back side of valve plate stiffening rib can also be set.Adopt the valve seat chamber of wedge section and the notion that valve plate cooperates no valve clearance, it can compensate automatically because the part shape that temperature causes changes, and keeps good air-tightness.
Because the partial combustion of fuel easily forms separating out of carbon, red-hot soot runs into the low relatively valve surface of temperature and can generation adhere to, and forms the valve carbon distribution.For the present invention, a spot of carbon distribution can be filled and led up valve and cooperate, and beneficial to increasing tightness, unnecessary carbon distribution can come off along with the scraping action that valve motion produced, and flows away with exhaust.
Also can be provided with sledger 2 between described wedge shape valve plate 3 and Electromagnetically actuated device 1, the two ends of sledger 2 are connected with Electromagnetically actuated device 1 with wedge shape valve plate 3 respectively.The position that sledger 2 can convenient electromagnetic actuation devices 1 is set, makes whole air distribution structure compactness.
Adopt the present invention, the application that makes the multiple accurate combustion control technology of modern advanced motor is become to be easy to realize:
1, owing to no longer include stopping of the gentle door of horn-like valve head head rod, air-flow path is become smoothly, help the formation control of air inlet eddy flow, help layering, lean combustion control, reduce fuel consumption;
2, electronically controlled sliding valve structure is realized the stepless variation control of accurate valve opening easily, thereby accurately controls the inlet and outlet amount, thereby can cancel throttle valve device, realizes E-Gas;
3, under the non-state of operating at full capacity of motor, the cylinder operation (work done of part cylinder) that can easily realize going out of electronically controlled guiding valve valve, and can finish the EGR exhaust gas recirculation by non-power cylinder.
In the present invention, the mechanical part of valve only needs controlling computer adjustment program can handle, change its operation only as a movement platform, is very easy to the accurate control to motor, simplify the manufacture process of motor, improved the manufacturing efficiency of factory.
Adopt the present invention, for cutting down the consumption of energy, reduce discharging, the efficient that improves motor has positive effect, meets the developing direction of alternate-engine technology.
Claims (2)
1, a kind of distribution device of piston four stroke engine, it has cylinder head (4), it is characterized in that, be provided with wedge shape valve seat chamber (5) on the inlet and outlet manifold (6) in cylinder head (4), be provided with wedge shape valve plate (3) in wedge shape valve seat chamber (5), wedge shape valve plate (3) is gone up and is connected Electromagnetically actuated device (1).
2, according to the distribution device of the described piston four stroke engine of claim 1, it is characterized in that, be provided with sledger (2) between described wedge shape valve plate (3) and Electromagnetically actuated device (1), the two ends of sledger (2) are connected with Electromagnetically actuated device (1) with wedge shape valve plate (3) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510044451.6A CN1730918A (en) | 2005-08-23 | 2005-08-23 | Gas distribution mechanism of piston type four-stroke engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510044451.6A CN1730918A (en) | 2005-08-23 | 2005-08-23 | Gas distribution mechanism of piston type four-stroke engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1730918A true CN1730918A (en) | 2006-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510044451.6A Pending CN1730918A (en) | 2005-08-23 | 2005-08-23 | Gas distribution mechanism of piston type four-stroke engine |
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| CN (1) | CN1730918A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102203481A (en) * | 2008-10-31 | 2011-09-28 | 费希尔控制国际公司 | Rotary actuator lever apparatus having an annular recess |
| CN102383946A (en) * | 2011-07-06 | 2012-03-21 | 潍柴动力股份有限公司 | Exhaust braking device, engine system and automobile |
-
2005
- 2005-08-23 CN CN200510044451.6A patent/CN1730918A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102203481A (en) * | 2008-10-31 | 2011-09-28 | 费希尔控制国际公司 | Rotary actuator lever apparatus having an annular recess |
| CN102203481B (en) * | 2008-10-31 | 2013-05-08 | 费希尔控制国际公司 | Rotary actuator lever apparatus having an annular recess |
| CN102383946A (en) * | 2011-07-06 | 2012-03-21 | 潍柴动力股份有限公司 | Exhaust braking device, engine system and automobile |
| CN102383946B (en) * | 2011-07-06 | 2013-12-11 | 潍柴动力股份有限公司 | Exhaust braking device, engine system and automobile |
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