CN103821578A - Hydraulic control high-pressure air inlet system of compressed air engine - Google Patents
Hydraulic control high-pressure air inlet system of compressed air engine Download PDFInfo
- Publication number
- CN103821578A CN103821578A CN201410096044.9A CN201410096044A CN103821578A CN 103821578 A CN103821578 A CN 103821578A CN 201410096044 A CN201410096044 A CN 201410096044A CN 103821578 A CN103821578 A CN 103821578A
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- high pressure
- air
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Valve Device For Special Equipments (AREA)
Abstract
The invention relates to a hydraulic control high-pressure air inlet system of a compressed air engine and belongs to the field of compressed air engines. The hydraulic control high-pressure air inlet system is composed of a high-pressure oil pump (100), a high-pressure air inlet valve (102), a high-pressure air tank (103) and a low-pressure oil conveying system (101). The low-pressure oil conveying system (101) provides a hydraulic oil source needed by the whole system and the high-pressure oil pump (100) provides the starting frequency and the starting angle of the high-pressure air inlet valve (102). The high-pressure air inlet valve (102) inputs high-pressure gas from the high-pressure air tank (103) into a combustion chamber (104). A shifting fork (4) of the high-pressure oil pump (100) is regulated, so that a hydraulic plunger (5) rotates in different angles, and therefore the effective stroke of the hydraulic plunger is changed and the opening angle of the valve is regulated.
Description
Technical field
The present invention relates to a kind of compressed air engine high pressure admission system, this system can be controlled the on-line operation of gas cylinder mesohigh air in motor, and needn't after voltage stabilizing, use throttle style control engine.
Background technique
Conventional engine is the main engine type that compressed air engine is applied to automobile, and traditional intake method adopts cam, tappet, rocking arm, intake valve intake method.Also someone attempts to adopt electromagnetic valve air inlet, up to the present, does not also have the solenoid valve of high speed, high pressure, large flow to come out.
, there is following defect in the air inlet of available technology adopting cam intake valve intake method control pressurized air
Suction pressure is too high: intake valve, owing to being subject to high-pressure air effect, makes camshaft stressed excessive, in order to guarantee camshaft safety, can only make suction pressure reduce, and is stabilized to a very low force value, as 2MPa.This has lost compressed-air actuated pressure energy greatly virtually.
Air inlet angle is fixed, and after engine structure parameter is determined, its air inlet angle is just decided by cam line, adjust engine power and need adjusting air inflow quantity, because air inlet angle is certain, adjusting air inflow quantity can only adopt throttle style, regulates air inlet adjustment valve opening.This has lost again part energy.
The air valve bottom of traditional intake valve is a plane, if pass into pressurized gas, the pressure that this plane is born is very large, if open, need add a very large power to valve and just can open valve.With current material, be difficult to the switch problem of the high-pressure air that solves large pressure.
Summary of the invention
The object of the invention is to design a kind of high-pressure air gas handling system of reciprocating piston type compressed gas engine, pressurized air can directly be entered motor and needn't be passed through voltage-stabilizing system by gas cylinder, by controlling high pressure oil pump plunger angle, control IO Intake Valve Opens angle, thus control engine power.
Technological scheme of the present invention is: a kind of compressed air engine hydraulic control high pressure admission system is provided, has been made up of high pressure oil pump, high pressure admission valve, high pressure gas holder and low pressure fuel transfer system; Low pressure fuel transfer system provides whole system required hydraulic oil source; High pressure oil pump provides high pressure admission valve opening frequency and angle; High pressure admission valve will be input in firing chamber from the pressurized gas in high pressure gas holder.
High pressure oil pump adopts the cam hydraulic piston structure of repacking, cancels oil inlet hole, retains oil outlet, and hydraulic plunger end face is increased, and outlet valve, always higher than oil outlet, is cancelled in the top of hydraulic plunger; High-pressure oil pipe one end is communicated with the hydraulic plunger top oil pocket of high pressure oil pump, and the other end is communicated with in the hydraulic pressure transmitting set in high pressure admission valve; The frequency that high pressure admission valve provides according to high pressure oil pump and hydraulic pressure will be input in firing chamber from the pressurized gas in high pressure gas holder.
Low pressure fuel transfer system is made up of oil storage tank, low pressure oil transfer pump and relief valve; Oil storage tank, low pressure oil transfer pump and relief valve are concatenated into closed loop oil-way system mutually; On pipeline between oil outlet access relief valve and the low-pressure oil storage tank of high pressure oil pump; On pipeline between in line check valve access relief valve and the low pressure oil transfer pump of high pressure admission valve.
High pressure admission valve is made up of valve oil pocket, upper valve stem, lower valve stem, valve seat, air valve, air cavity, high-pressure air import, high-pressure air outlet, guide pipe and guide rod; Air valve is umbrella shape, and air valve forms along central shaft the upper valve stem and the lower valve stem that fixedly run through up and down; The hollow guiding bar of the top fixing coaxial of upper valve stem; The diameter of guide rod is less than upper valve stem diameter; Valve stem guide pipe is enclosed within the outside of guide rod; Valve stem guide pipe upper end is fixed under valve oil pocket bottom surface, and lower end and valve seat are fixed; Between bar guide pipe bottom and upper valve stem top, have buffering oil pocket; Buffering oil pocket is communicated with valve oil pocket by the hollow buffer oil duct of guide rod; Between the top of upper valve stem and buffering oil pocket, sealed with oil seal; The segment region of the upper valve stem below oil seal is sealed up with hermetic seal; Between oil seal and hermetic seal, leave the disappointing draining hole of leading to atmosphere; Oil seal and hermetic seal are fixed on valve stem, and guide rod and valve stem can move up and down vertically; The amplitude of motion be hermetic seal all the time not higher than disappointing draining pore, oil seal is not less than disappointing draining pore all the time; The hermetic seal of upper valve stem is take lower area as air cavity; The bottom of lower valve stem is through air cavity; Between air cavity lowermost end and lower valve stem, sealed with hermetic seal; Air valve is between air cavity inner high voltage air outlet slit and high-pressure air import, for cutting off high pressure outlet chamber and high pressure admission chamber; Air valve is along with moving up and down of valve opened or closure; High-pressure air import is communicated with high pressure gas holder; High-pressure air outlet is communicated with engine chamber; High-pressure oil pipe one end is communicated with the hydraulic plunger top oil pocket of high pressure oil pump, and the other end is communicated with valve oil pocket; Valve stem resets by the Returnning spring being arranged on air valve.
Returnning spring is metal spring, and Returnning spring one end is fixed on the bottom surface in high pressure admission chamber, and the other end is fixed on the bottom surface of umbrella shape air valve.
Beneficial effect of the present invention is lower valve stem to stretch out valve bottom, has reduced high-pressure air valve stem is upwarded pressure, and reduces the pretightening force of active force or the holddown spring of valve opening.
In order to prevent that high-pressure air from scurrying into hydraulic system through valve stem, design two seals, one sealing gas, one sealed high pressure oil.Centre has the draining hole of losing heart, and pressurized gas and the hydraulic oil of leakage are discharged through hole.
Regulate shift fork, make hydraulic plunger different rotation angle, thereby change hydraulic plunger effective travel, regulate valve opening angle.
Unique pump-valve hydraulic control structure, is convenient to adjusting air inflow quantity, has reduced manufacture cost simultaneously.
Accompanying drawing explanation
Fig. 1 is hydraulic control high pressure admission system architecture schematic diagram.
Fig. 2 is air valve structure sectional view.
1 cam in figure, 2 rollers, 3 high pressure oil pump springs, 4 shift forks, 5 hydraulic plungers, 6 plunger oil grooves, 7 oil outlets, 8 oil storage tanks, 9 low pressure oil transfer pumps, 10 relief valves, 11 high-pressure oil pipes, 12 one-way valves, 13 valve oil pockets, 14 guide pipes, 15 buffering oil ducts, 16 buffering oil pockets, 17 oil seals, 18 hermetic seals, 19 high pressure outlet chambers, 20 inlet valve seats, 21 high-pressure air imports, 22 hermetic seals, 23 times valve stems, 25 Returnning springs, 26 air valves, 27 high-pressure air outlets, valve stem on 28, 29 disappointing draining holes, 30 guide rods, 31 high pressure admission chambeies, 100 high pressure oil pumps, 101 low pressure fuel transfer systems, 102 high pressure admission valves, 103 high pressure gas holders, 104 firing chambers.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Compressed air engine hydraulic control high pressure admission system, is made up of high pressure oil pump 100, high pressure admission valve 102, high pressure gas holder 103 and low pressure fuel transfer system 101; Low pressure fuel transfer system 101 provides whole system required hydraulic oil source; High pressure oil pump 100 provides high pressure admission valve 102 open frequency and angle; High pressure admission valve 102 will be input in firing chamber 104 from the pressurized gas in high pressure gas holder 103.
High pressure oil pump 100 adopts the cam hydraulic piston structure of repacking, cancels oil inlet hole, retains oil outlet 7, and hydraulic plunger 5 end faces are increased, and outlet valve, always higher than oil outlet 7, is cancelled in the top of hydraulic plunger 5; High-pressure oil pipe 11 one end are communicated with the hydraulic plunger top oil pocket of high pressure oil pump 100, and the other end is communicated with in the hydraulic pressure transmitting set in high pressure admission valve 102; The frequency that high pressure admission valve 102 provides according to high pressure oil pump 100 and hydraulic pressure will be input in firing chamber 104 from the pressurized gas in high pressure gas holder 103.
Low pressure fuel transfer system 101 is made up of oil storage tank 8, low pressure oil transfer pump 9 and relief valve 10; Oil storage tank 8, low pressure oil transfer pump 9 and relief valve 10 are concatenated into closed loop oil-way system mutually; The oil outlet 7 of high pressure oil pump 100 accesses on the pipeline between relief valve 10 and low-pressure oil storage tank 8; The in line check valve 12 of high pressure admission valve 102 accesses on the pipeline between relief valve 10 and low pressure oil transfer pump 9.
High pressure admission valve 102 is made up of valve oil pocket 13, upper valve stem 28, lower valve stem 23, valve seat 20, air valve 26, air cavity, high-pressure air import 21, high-pressure air outlet 27, guide pipe 14, guide rod 30; Air valve 26 is umbrella shape, and air valve forms along central shaft the upper valve stem 28 and the lower valve stem 23 that fixedly run through Shang Xia 26; The hollow guiding bar 30 of the top fixing coaxial of upper valve stem 28; The diameter of guide rod 30 is less than upper valve stem 28 diameters; Valve stem guide pipe 14 is enclosed within the outside of guide rod 30; Valve stem guide pipe 14 upper ends are fixed under valve oil pocket 13 bottom surfaces, and lower end and valve seat are fixed; Between bar guide pipe 14 bottoms and upper valve stem 28 tops, have buffering oil pocket 16; Buffering oil pocket 16 is communicated with valve oil pocket 13 by the hollow buffer oil duct 15 of guide rod 30; Between the top of upper valve stem 28 and buffering oil pocket 16, seal with oil seal 17; The segment region of the upper valve stem 28 of oil seal below 17 seals up with hermetic seal 18; Between oil seal 17 and hermetic seal 18, leave the disappointing draining hole 29 of leading to atmosphere; Oil seal 17 and hermetic seal 18 are fixed on valve stem 28, and guide rod 30 and valve stem can move up and down vertically; The amplitude of motion be hermetic seal 18 all the time not higher than disappointing draining pore 29, oil seal 17 is not less than disappointing draining pore 29 all the time; The hermetic seal 18 of upper valve stem is take lower area as air cavity; The bottom of lower valve stem 23 is through air cavity 31; Between air cavity lowermost end and lower valve stem 23, seal with hermetic seal 22; Air valve 26 is between air cavity inner high voltage air outlet slit 27 and high-pressure air import 21, for cutting off high pressure outlet chamber 19 and high pressure admission chamber 31; Air valve 26 is along with moving up and down of valve opened or closure; High-pressure air import 21 is communicated with high pressure gas holder 103; High-pressure air outlet 27 is communicated with engine chamber 104; High-pressure oil pipe 11 one end are communicated with the hydraulic plunger top oil pocket of high pressure oil pump 100, and the other end is communicated with valve oil pocket 13; Valve stem resets by the Returnning spring 25 being arranged on air valve 26.
Returnning spring 25 is metal spring, and Returnning spring 25 one end are fixed on 31Nei bottom surface, high pressure admission chamber, and the other end is fixed on the bottom surface of umbrella shape air valve 26.
Working procedure of the present invention is as follows:
When high pressure oil pump cam 1 is up, plunger oil groove 6 is not communicated with oil outlet 7, plunger 5 is up, hydraulic oil is in seal space, hydraulic oil pressurized, and pressure raises, hydraulic oil flows to valve oil pocket 13 and buffering oil pocket 16, unseat the valve valve 26, high-pressure air enters high pressure outlet chamber by high-pressure air suction port 21 through air valve 26 and valve seat insert 20 gaps, then enters motor by high-pressure air outlet 27.
Because one-way valve 12 is closed, low-pressure hydraulic oil, after low pressure oil transfer pump 9 is suppressed, flows back to oil storage tank 8 by relief valve 10.
When high pressure oil pump cam 1 is up, plunger oil groove 6 is communicated with oil outlet 7, plunger 5 continues up, plunger oil groove 6 is communicated with oil outlet 7, high pressure oil pressure release in high-pressure oil pipe 11, hydraulic oil is let out back oil storage tank 8 via valve oil pocket 13, buffering oil pocket 16, high-pressure oil pipe 11, plunger oil groove 6, oil outlet 7, and when the hydraulic pressure in high-pressure oil pipe 11 is during lower than the limit value of relief valve 10, one-way valve 12 is opened.Air valve 26 falls after rise under Returnning spring 25 effects, and buffering oil duct 15 reduces along with air valve 26 falls after rise gradually with the circulation area of buffering oil pocket 16, and buffering oil pocket 16 internal pressures raise, and air valve 26 falling speed slow down, until air valve 26 is closed.
When high pressure oil pump cam 1 is descending, plunger 5 is descending, and it is large that oil pressure volume becomes, and hydraulic oil provides through one-way valve 12.Valve-closing.
High pressure oil pump cam 1 is in the time that basic circle moves, and hydraulic oil has been full of high-pressure oil pipe 11 and valve oil pocket 13 through one-way valve 12, and one-way valve 12 is closed, and air valve 26 is closed, and the hydraulic oil that low pressure oil transfer pump 9 pressurizes flows back to oil storage tank 8 through relief valve 10.
By adjusting shift fork 4, thereby change plunger 5 effective travels, realize air valve 26 different opening.
Claims (5)
1. compressed air engine hydraulic control high pressure admission system, is characterized in that being made up of high pressure oil pump (100), high pressure admission valve (102), high pressure gas holder (103) and low pressure fuel transfer system (101); Low pressure fuel transfer system (101) provides whole system required hydraulic oil source; High pressure oil pump (100) provides high pressure admission valve (102) open frequency and angle; High pressure admission valve (102) will be input in firing chamber (104) from the pressurized gas in high pressure gas holder 103.
2. compressed air engine hydraulic control high pressure admission system according to claim 1, it is characterized in that high pressure oil pump (100) adopts the cam hydraulic piston structure of repacking, cancel oil inlet hole, retain oil outlet (7), hydraulic plunger (5) end face is increased, outlet valve, always higher than oil outlet (7), is cancelled in the top of hydraulic plunger (5); High-pressure oil pipe (11) one end is communicated with the hydraulic plunger top oil pocket of high pressure oil pump (100), and the other end is communicated with in the hydraulic pressure transmitting set in high pressure admission valve (102); The frequency that high pressure admission valve (102) provides according to high pressure oil pump (100) and hydraulic pressure will be input in firing chamber (104) from the pressurized gas in high pressure gas holder (103).
3. compressed air engine hydraulic control high pressure admission system according to claim 1, is characterized in that low pressure fuel transfer system (101) is made up of oil storage tank (8), low pressure oil transfer pump (9) and relief valve (10); Oil storage tank (8), low pressure oil transfer pump (9) and relief valve (10) are concatenated into closed loop oil-way system mutually; On pipeline between oil outlet (7) access relief valve (10) and the low-pressure oil storage tank (8) of high pressure oil pump (100); On pipeline between in line check valve (12) access relief valve (10) and the low pressure oil transfer pump (9) of high pressure admission valve (102).
4. compressed air engine hydraulic control high pressure admission system according to claim 1, is characterized in that high pressure admission valve (102) is made up of valve oil pocket (13), upper valve stem (28), lower valve stem (23), valve seat (20), air valve (26), air cavity, high-pressure air import (21), high-pressure air outlet (27), guide pipe (14), guide rod (30); Air valve (26) is umbrella shape, and air valve (26) forms along central shaft the upper valve stem (28) and the lower valve stem (23) that fixedly run through up and down; The hollow guiding bar (30) of the top fixing coaxial of upper valve stem (28); The diameter of guide rod (30) is less than upper valve stem (28) diameter; Valve stem guide pipe (14) is enclosed within the outside of guide rod (30); Valve stem guide pipe (14) upper end is fixed under valve oil pocket (13) bottom surface, and lower end and valve seat are fixed; Between bar guide pipe (14) bottom and upper valve stem (28) top, have buffering oil pocket (16); Buffering oil pocket (16) is communicated with valve oil pocket (13) by the hollow buffer oil duct (15) of guide rod (30); Between the top of upper valve stem (28) and buffering oil pocket (16), seal with oil seal (17); Segment hermetic seal for region (18) of the upper valve stem (28) below oil seal (17) seals up; Between oil seal (17) and hermetic seal (18), leave the disappointing draining pore (29) that leads to atmosphere; It is upper that oil seal (17) and hermetic seal (18) are fixed on valve stem (28), and guide rod (30) and valve stem can move up and down vertically; The amplitude of motion be hermetic seal (18) all the time not higher than disappointing draining pore (29), oil seal (17) is not less than disappointing draining pore (29) all the time; The hermetic seal (18) of upper valve stem is take lower area as air cavity; The bottom of lower valve stem (23) is through air cavity (31); Between air cavity lowermost end and lower valve stem (23), seal with hermetic seal (22); Air valve (26) is positioned between air cavity inner high voltage air outlet slit (27) and high-pressure air import (21), for cutting off high pressure outlet chamber (19) and high pressure admission chamber (31); Air valve (26) is along with moving up and down of valve opened or closure; High-pressure air import (21) is communicated with high pressure gas holder (103); High-pressure air outlet (27) is communicated with engine chamber (104); High-pressure oil pipe (11) one end is communicated with the hydraulic plunger top oil pocket of high pressure oil pump (100), and the other end is communicated with valve oil pocket (13); Valve stem resets by the Returnning spring (25) being arranged on air valve (26).
5. compressed air engine hydraulic control high pressure admission system according to claim 4, it is characterized in that Returnning spring (25) is metal spring, Returnning spring (25) one end is fixed on the bottom surface in high pressure admission chamber (31), and the other end is fixed on the bottom surface of umbrella shape air valve (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410096044.9A CN103821578B (en) | 2014-03-14 | 2014-03-14 | Compressed air engine hydraulic control high pressure admission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410096044.9A CN103821578B (en) | 2014-03-14 | 2014-03-14 | Compressed air engine hydraulic control high pressure admission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103821578A true CN103821578A (en) | 2014-05-28 |
| CN103821578B CN103821578B (en) | 2016-03-02 |
Family
ID=50756837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410096044.9A Expired - Fee Related CN103821578B (en) | 2014-03-14 | 2014-03-14 | Compressed air engine hydraulic control high pressure admission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103821578B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454065A (en) * | 2014-10-29 | 2015-03-25 | 浙江大学 | Electro-hydraulic driven fully-variable valve mechanism of pneumatic engine and fully-variable implementation method thereof |
| CN104454065B (en) * | 2014-10-29 | 2017-01-04 | 浙江大学 | Air motor electro-hydraulic driving fully variable valve actuator for air and complete variable implementation method |
| CN111691925A (en) * | 2020-06-24 | 2020-09-22 | 张谭伟 | Air engine and air engine system like breathing air movement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5164122A (en) * | 1974-10-10 | 1976-06-03 | Maschf Augsburg Nuernberg Ag | |
| US20040103868A1 (en) * | 2001-11-13 | 2004-06-03 | Ralph Engelberg | Device for the control of at least one gas exchange valve |
| CN202560340U (en) * | 2012-04-01 | 2012-11-28 | 五邑大学 | Continuous variable air valve device for hydraulic type engine |
| CN203730088U (en) * | 2014-03-14 | 2014-07-23 | 大连理工大学 | Hydraulic control high-pressure air intake system of compressed air engine |
-
2014
- 2014-03-14 CN CN201410096044.9A patent/CN103821578B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5164122A (en) * | 1974-10-10 | 1976-06-03 | Maschf Augsburg Nuernberg Ag | |
| US20040103868A1 (en) * | 2001-11-13 | 2004-06-03 | Ralph Engelberg | Device for the control of at least one gas exchange valve |
| CN202560340U (en) * | 2012-04-01 | 2012-11-28 | 五邑大学 | Continuous variable air valve device for hydraulic type engine |
| CN203730088U (en) * | 2014-03-14 | 2014-07-23 | 大连理工大学 | Hydraulic control high-pressure air intake system of compressed air engine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454065A (en) * | 2014-10-29 | 2015-03-25 | 浙江大学 | Electro-hydraulic driven fully-variable valve mechanism of pneumatic engine and fully-variable implementation method thereof |
| CN104454065B (en) * | 2014-10-29 | 2017-01-04 | 浙江大学 | Air motor electro-hydraulic driving fully variable valve actuator for air and complete variable implementation method |
| CN111691925A (en) * | 2020-06-24 | 2020-09-22 | 张谭伟 | Air engine and air engine system like breathing air movement |
| CN111691925B (en) * | 2020-06-24 | 2021-11-09 | 张谭伟 | Air engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103821578B (en) | 2016-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2236809B1 (en) | Direct-injection system fuel pump with an improved maximum-pressure valve | |
| JP4701227B2 (en) | Plunger high pressure fuel pump | |
| US2863438A (en) | Timing of fuel injection pumps | |
| RU2016100908A (en) | PUMPING SYSTEM (OPTIONS) AND METHOD OF DIRECT FUEL INJECTION | |
| US10941741B2 (en) | High-pressure fuel supply pump | |
| CN203130181U (en) | Novel adjustable hydraulic tappet | |
| CN107676142B (en) | Hydraulic drive variable valve mechanism with low pressure control and high pressure | |
| AP2004003172A0 (en) | Variable flow reducing valve and gradual control valve distribution system for a compressed air injection engine operating on mono or multi energy and other engines or compressors | |
| US6907851B2 (en) | Engine valve actuation system | |
| CN103925037A (en) | Novel adjustable hydraulic tappet | |
| WO2009151987A1 (en) | Cam-driven hydraulic lost-motion mechanisms for overhead cam and overhead valve valvetrains | |
| CN203730088U (en) | Hydraulic control high-pressure air intake system of compressed air engine | |
| CN103821578B (en) | Compressed air engine hydraulic control high pressure admission system | |
| EP3482061A1 (en) | High-pressure fuel pump | |
| CN104632317A (en) | Vent valve device for high-power low-speed marine diesel engine | |
| US20150034060A1 (en) | Exhaust valve assembly for a two-stroke engine | |
| CN204492917U (en) | A kind of high-power marine low-speed diesel engine discharge valve apparatus | |
| CN211474201U (en) | Fully variable valve system of engine | |
| WO2020124554A1 (en) | Valve train and engine | |
| WO2012048279A4 (en) | Single piston sleeve valve with optional variable compression ratio capability | |
| KR102214301B1 (en) | Gas exchange valve arrangement | |
| CN109915379A (en) | A kind of intake valve open in usual | |
| CN205877367U (en) | Device is opened slowly to solenoid valve | |
| US20030213444A1 (en) | Engine valve actuation system | |
| CN203362250U (en) | Variable valve system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20170314 |