CN111336033A - Mixed fuel four-stroke engine - Google Patents
Mixed fuel four-stroke engine Download PDFInfo
- Publication number
- CN111336033A CN111336033A CN202010298717.4A CN202010298717A CN111336033A CN 111336033 A CN111336033 A CN 111336033A CN 202010298717 A CN202010298717 A CN 202010298717A CN 111336033 A CN111336033 A CN 111336033A
- Authority
- CN
- China
- Prior art keywords
- crankcase
- valve
- hole
- exhaust
- crankshaft
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 27
- 238000005461 lubrication Methods 0.000 claims abstract description 15
- 230000001050 lubricating effect Effects 0.000 claims abstract description 6
- 239000003570 air Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0002—Cylinder arrangements
- F02F7/0004—Crankcases of one-cylinder engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M3/00—Lubrication specially adapted for engines with crankcase compression of fuel-air mixture or for other engines in which lubricant is contained in fuel, combustion air, or fuel-air mixture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a mixed fuel four-stroke engine, which comprises a box body, an engine body, a fuel oil mixing device and a fuel oil mixing device, wherein the engine body consists of a valve assembly cavity, an exhaust hole, a connecting rod, a valve body driving assembly, a cylinder, an air inlet valve, an air inlet hole, a piston, a first calibration hole, a crankcase, a lubrication supply cavity, a crankshaft, a second calibration hole and an exhaust valve; the invention has simple mechanical structure and low manufacturing cost, and can lubricate each movable part of the engine body along one direction, thereby improving the lubricating efficiency.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a mixed fuel four-stroke engine.
Background
A four-stroke engine of the related art includes an intake passage for delivering a mixed fuel to an intake valve; the gas premixing device comprises a connecting pipe, a gas inlet channel, a gas outlet channel, a gas inlet channel and a gas outlet channel, wherein the connecting pipe is used for connecting the valve body with the gas inlet channel, the gas inlet channel and the gas outlet channel are arranged in parallel, the gas inlet channel and the gas outlet channel;
however, due to the dynamic fluctuation characteristics in the connecting channel, the mixed fuel can only move back and forth in the same connection, so that the lubricating oil can not work normally under various conditions, and the lubricating effect is influenced.
Another four-stroke engine, wherein the air intake valve is connected to the premixing apparatus directly by the air intake passage, the mixed fuel enters the crankcase through the air intake passage, the crankcase is connected to the valve assembly chamber through the connecting passage parallel to the cylinder wall, when the valve body moves reversely, the connecting pipe is disconnected from the air intake passage, and forms a closed mixed fuel space with the crankcase and the piston, in order to control the circulation of the mixed fuel, the structure that the mixed fuel enters the crankcase is provided with the air intake valve, and the connecting pipe between the valve body and the air intake passage is provided with the throttle valve;
however, in order to achieve this, the tank needs to be pressurized by the movement of the piston, and therefore a complex and expensive sealing system must be provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a mixed fuel four-stroke engine, which solves the problems mentioned in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: a mixed fuel four-stroke engine comprises a box body, an engine body and a control device, wherein the engine body consists of a valve assembly chamber, an exhaust hole, a connecting rod, a valve body driving assembly, a cylinder, an air inlet valve, an air inlet hole, a piston, a calibration hole I, a crankcase, a lubrication supply chamber, a crankshaft, a calibration hole II and an exhaust valve, and the engine body is positioned in the box body;
the air inlet is arranged above the air cylinder, and an air inlet valve for controlling the on-off of the air inlet is also arranged above the air cylinder;
the piston is arranged in the cylinder, and a combustion obstructing chamber is formed between the cylinder and the piston;
the cylinder is positioned in the crankcase, the crankshaft is arranged below the piston, the bottom of the piston drives the crankshaft to do reciprocating rotary motion in the crankcase through the connecting rod, and overpressure and underpressure are alternately generated in the crankcase;
the exhaust hole is formed below the crankcase, and an exhaust valve for controlling the on-off of the exhaust hole is also arranged below the crankcase;
the valve assembly cavity consists of a valve body driving assembly, a crankcase, a second calibration hole and an exhaust valve;
the exhaust hole and the exhaust valve are both positioned in the cavity of the valve assembly, and the intake valve and the exhaust valve are both positioned in the box body and are controlled by the valve body driving assembly;
the premixing device is used for mixing air, fuel and lubricant;
the crankcase is driven by the crankshaft to rotate so as to realize that the mixed fuel is guided into the crankcase after the lubrication supply chamber is communicated with the crankcase through the first calibration hole;
the crankcase is communicated with the valve assembly chamber through a calibration hole.
Further, the cumulative area of the second calibration holes is not larger than the area of the first calibration holes.
Further, the crankcase is rotated by the crankshaft between sixty degrees before top dead center and sixty degrees after top dead center to enable communication of the crankcase with the lubrication supply chamber;
the crankcase rotates between sixty degrees before the bottom dead center and sixty degrees after the bottom dead center through the crankshaft, so that the crankcase is communicated with the air valve assembly chamber.
Further, a spring is sleeved outside the air inlet valve, and the crankcase is communicated with the lubricating supply chamber through the air inlet valve with the spring.
Compared with the prior art, the invention has the following beneficial effects:
(1) the mechanical structure is simple, and the manufacturing cost is low.
(2) And the movable parts of the engine body are lubricated along one direction, so that the lubricating efficiency is improved.
Drawings
Fig. 1 is a partial cross-sectional view of a front view of the present invention.
In the figure: 1-valve assembly chamber, 2-exhaust hole, 3-connecting rod, 4-valve body driving assembly, 5-cylinder, 6-intake valve, 7-intake hole, 8-piston, 9-calibration hole I, 10-crankcase, 11-lubrication supply chamber, 12-crankshaft, 13-calibration hole II and 14-exhaust valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a mixed fuel four-stroke engine comprises a box body, an engine body, a fuel oil and a fuel oil mixing device, wherein the engine body consists of a valve assembly chamber 1, an exhaust hole 2, a connecting rod 3, a valve body driving assembly 4, a cylinder 5, an air inlet valve 6, an air inlet hole 7, a piston 8, a first calibration hole 9, a crankcase 10, a lubrication supply chamber 11, a crankshaft 12, a second calibration hole 13 and an exhaust valve 14, and is positioned in the box body;
the air inlet 7 is arranged above the air cylinder 5, and an air inlet valve 6 for controlling the on-off of the air inlet 7 is also arranged above the air cylinder 5;
the piston 8 is arranged in the cylinder 5, and a combustion obstructing chamber is formed between the cylinder 5 and the piston 8;
the cylinder 5 is positioned in the crankcase 10, the crankshaft 12 is arranged below the piston 8, the bottom of the piston 8 drives the crankshaft 12 to do reciprocating rotation motion in the crankcase 10 through the connecting rod 3, and overpressure and underpressure are alternately generated in the crankcase 10;
the exhaust hole 2 is arranged below the crankcase 10, and an exhaust valve 14 for controlling the on-off of the exhaust hole 2 is also arranged below the crankcase 10;
the valve assembly chamber 1 (the valve assembly chamber 1 comprises a camshaft, a push rod, a rocker arm, an air inlet valve 6 and an air outlet valve) consists of a valve body driving assembly 4, a crankcase 10, a second calibration hole 13 and an exhaust valve 14;
the exhaust hole 2 and the exhaust valve 14 are both positioned in the valve assembly chamber 1, and the intake valve 6 and the exhaust valve 14 are both positioned in the box body and are controlled by the valve body driving assembly 4;
the premixing device is used for mixing air, fuel and lubricant;
the crankcase 10 is driven by the crankshaft 12 to rotate so as to realize that mixed fuel is introduced into the crankcase 10 after the lubrication supply chamber 11 is communicated with the crankcase 10 through the first calibration hole 9, the valve body driving assembly 4 rotates through the crankshaft 12 to control the on-off of the air inlet valve 6, the overpressure and underpressure actions in the crankcase 10 are completed, and at least a part of mixed fuel in the lubrication supply chamber 11 and the air valve assembly chamber 1 is ensured to be exchanged;
the crankcase 10 and the valve assembly chamber 1 are communicated through a second calibrated hole 13.
The cumulative area of the second calibrated holes 13 is not greater than the area of the first calibrated holes 9.
The crankcase 10 is rotated by the crankshaft 12 between sixty degrees before top dead center and sixty degrees after top dead center to achieve communication of the crankcase 10 with the lubrication supply chamber 11;
the crankcase 10 is rotated by the crankshaft 12 between sixty degrees before bottom dead center and sixty degrees after bottom dead center to achieve communication between the crankcase 10 and the valve assembly chamber 1.
The intake valve 6 is spring-loaded and the crankcase 10 is in communication with the lubrication supply chamber 11 via the spring-loaded intake valve 6.
In operation, the engine body has a cylinder and a piston obstructing the combustion chamber of the cylinder, the piston drives the crankshaft through a connecting rod connected to the crankshaft, an intake valve and an exhaust valve are provided in the housing, both actuated by the crankshaft, the engine body includes three chambers, a crankcase, a lubrication supply chamber and a valve assembly chamber, in such a way that the mixed fuel is guided to all lubrication points in the engine body, a simple and compact mechanical structure and good exhaust function ensure sufficient lubrication to achieve good acceleration performance, when the piston moves up in the crankcase, the pressure in the crankcase decreases gradually, the intake valve or the calibrated orifice automatically connects the lubrication supply chamber to the crankcase, so that the mixed fuel is sucked into the crankcase, and as the piston moves down, the pressure in the crankcase increases gradually, a second vent valve or pair of calibrated holes connects the crankcase and the valve assembly chamber. The mixed fuel is delivered to the valve assembly chamber.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a mixed fuel four-stroke engine, includes the box, by valve assembly chamber (1), exhaust hole (2), connecting rod (3), valve body drive assembly (4), cylinder (5), admission valve (6), inlet port (7), piston (8), calibration hole (9), crankcase (10), lubricated engine body of supplying with cavity (11), bent axle (12), calibration hole two (13) and discharge valve (14) and constituteing, and engine body is located the box, its characterized in that:
the air inlet hole (7) is formed above the air cylinder (5), and an air inlet valve (6) for controlling the on-off of the air inlet hole (7) is also formed above the air cylinder (5);
the piston (8) is arranged in the cylinder (5), and a combustion obstructing chamber is formed between the cylinder (5) and the piston (8);
the cylinder (5) is positioned in a crankcase (10), the crankshaft (12) is arranged below the piston (8), the bottom of the piston (8) drives the crankshaft (12) to do reciprocating rotary motion in the crankcase (10) through the connecting rod (3), and overpressure and underpressure are alternately generated in the crankcase (10);
the exhaust hole (2) is formed below the crankcase (10), and an exhaust valve (14) used for controlling the on-off of the exhaust hole (2) is also arranged below the crankcase (10);
the valve assembly chamber (1) consists of a valve body driving assembly (4), a crankcase (10), a second calibration hole (13) and an exhaust valve (14);
the exhaust hole (2) and the exhaust valve (14) are both positioned in the valve assembly chamber (1), and the intake valve (6) and the exhaust valve (14) are both positioned in the box body and are controlled by the valve body driving assembly (4);
the premixing device is used for mixing air, fuel and lubricant;
the crankcase (10) is driven by the crankshaft (12) to rotate so as to realize that the lubricating supply chamber (11) is communicated with the crankcase (10) through the first calibration hole (9), and then mixed fuel is introduced into the crankcase (10);
the crankcase (10) is communicated with the valve assembly chamber (1) through a second calibration hole (13).
2. A mixed fuel four-stroke engine according to claim 1, wherein: the cumulative area of the second calibration holes (13) is not larger than the area of the first calibration holes (9).
3. A mixed fuel four-stroke engine according to claim 2, wherein: the crankcase (10) is rotated between sixty degrees before top dead center and sixty degrees after top dead center through the crankshaft (12) to achieve communication between the crankcase (10) and the lubrication supply chamber (11);
the crankcase (10) rotates between sixty degrees before the bottom dead center and sixty degrees after the bottom dead center through the crankshaft (12) so as to achieve communication between the crankcase (10) and the valve assembly chamber (1).
4. A mixed fuel four-stroke engine according to claim 3, wherein: the air inlet valve (6) is sleeved with a spring, and the crankcase (10) is communicated with the lubricating supply chamber (11) through the air inlet valve (6) with the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010298717.4A CN111336033A (en) | 2020-04-16 | 2020-04-16 | Mixed fuel four-stroke engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010298717.4A CN111336033A (en) | 2020-04-16 | 2020-04-16 | Mixed fuel four-stroke engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111336033A true CN111336033A (en) | 2020-06-26 |
Family
ID=71184808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010298717.4A Pending CN111336033A (en) | 2020-04-16 | 2020-04-16 | Mixed fuel four-stroke engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111336033A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112698A (en) * | 2020-09-22 | 2020-12-22 | 东风汽车集团有限公司 | Camshaft drive structure and fuel engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6167874B1 (en) * | 1998-12-28 | 2001-01-02 | Andreas Stihl Ag & Co. | Portable handheld work apparatus having a four-stroke engine |
| US20040144344A1 (en) * | 2003-01-14 | 2004-07-29 | Tadao Yashirodai | Four-cycle internal combustion engine |
| CN1625645A (en) * | 2002-01-30 | 2005-06-08 | 电气联合股份有限公司 | A crankcase scavenged four-stroke engine |
| CN202090981U (en) * | 2011-05-11 | 2011-12-28 | 江苏苏美达五金工具有限公司 | Lubricating oil and fuel mixed lubrication four-stroke engine |
| CN104196624A (en) * | 2014-08-26 | 2014-12-10 | 台州庆隆机电有限公司 | Four-stroke engine |
| CN212154977U (en) * | 2020-04-16 | 2020-12-15 | 索逻植保机械(合肥)有限公司 | Mixed fuel four-stroke engine |
-
2020
- 2020-04-16 CN CN202010298717.4A patent/CN111336033A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6167874B1 (en) * | 1998-12-28 | 2001-01-02 | Andreas Stihl Ag & Co. | Portable handheld work apparatus having a four-stroke engine |
| CN1625645A (en) * | 2002-01-30 | 2005-06-08 | 电气联合股份有限公司 | A crankcase scavenged four-stroke engine |
| US20040144344A1 (en) * | 2003-01-14 | 2004-07-29 | Tadao Yashirodai | Four-cycle internal combustion engine |
| CN202090981U (en) * | 2011-05-11 | 2011-12-28 | 江苏苏美达五金工具有限公司 | Lubricating oil and fuel mixed lubrication four-stroke engine |
| CN104196624A (en) * | 2014-08-26 | 2014-12-10 | 台州庆隆机电有限公司 | Four-stroke engine |
| CN212154977U (en) * | 2020-04-16 | 2020-12-15 | 索逻植保机械(合肥)有限公司 | Mixed fuel four-stroke engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112698A (en) * | 2020-09-22 | 2020-12-22 | 东风汽车集团有限公司 | Camshaft drive structure and fuel engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100376065B1 (en) | Handheld type four-cycle engine | |
| CN201184237Y (en) | Rotary-piston type internal combustion engine | |
| CN212154977U (en) | Mixed fuel four-stroke engine | |
| KR100472097B1 (en) | Engine valve operation mechanism | |
| CN110439682A (en) | Contraposition engine | |
| US20030051680A1 (en) | System for lubricating valve-operating mechanism in engine | |
| US20010047788A1 (en) | Handheld type four-cycle engine | |
| CN111336033A (en) | Mixed fuel four-stroke engine | |
| US8813715B2 (en) | Vertical engine | |
| CN204082332U (en) | Mini four-stroke gasoline engine | |
| KR20020034901A (en) | Engine head cover structure | |
| CN1831310A (en) | Paired pendulum piston engine | |
| KR100428497B1 (en) | Valve-operating mechanism in 4-cycle engine | |
| CN101397931A (en) | Reciprocating internal combustion engine | |
| CN2911205Y (en) | Rotary piston I.C. engine | |
| JP3402568B2 (en) | 4 cycle engine | |
| JPH0842352A (en) | Lubricating device for four-cycle engine for model | |
| CN2727412Y (en) | Rotary two-stroke engine with multi combustion chambers | |
| CN100406696C (en) | Two-stroke engine with rotor combustion chamber | |
| US6830030B2 (en) | Four-cycle engine | |
| CN209469511U (en) | Without the external combustion chamber conventional engine system of thin oil lubricant and expanding machine | |
| CN2409341Y (en) | Cylinder rotary type piston IC engine | |
| CN215830606U (en) | High-power low-energy-consumption two-stroke engine | |
| CN2311607Y (en) | Gas distribution mechanism for reciprocating piston type internal combustion engine | |
| CN110005500B (en) | Four-stroke engine capable of being turned over at will |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |