CN201025113Y - Gasoline engine of electrical spraying two-stroke changed from electrical spraying four-stroke - Google Patents
Gasoline engine of electrical spraying two-stroke changed from electrical spraying four-stroke Download PDFInfo
- Publication number
- CN201025113Y CN201025113Y CNU2007201408441U CN200720140844U CN201025113Y CN 201025113 Y CN201025113 Y CN 201025113Y CN U2007201408441 U CNU2007201408441 U CN U2007201408441U CN 200720140844 U CN200720140844 U CN 200720140844U CN 201025113 Y CN201025113 Y CN 201025113Y
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- stroke
- efi
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- air
- gas
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Abstract
The utility model provides a two-stroke gasoline engine changed from the four-stroke gasoline engine; the two-stroke gasoline engine is characterized in that an inlet valve of the cylinder is connected with one end of a compressed air inlet pipe, and the utility model also comprises an air pump that the high-pressure gas outlet is connected with the other end of the air inlet pipe, and a gas storage surge tank is arranged at the air inlet pipe; the driving crankshaft of the air pump is connected with the crankshaft of the engine, making the engine drives the air pump to work when rotating, producing high-pressure gas. The utility model realizes the two-stroke high efficiency operating mode through inputting the high-pressure gas in the inlet valve; and the device providing high-pressure gas is only a set of air pumps and high-pressure gas delivery pipes, and the gasoline engine combines the advantages of the two-stroke gasoline engine and the four-stroke gasoline engine, thereby the two-stroke gasoline engine has the advantages of simple structure, high work efficiency, complete burning and long service time.
Description
Technical field
The utility model relates to a kind of petrol engine, especially a kind ofly changes the EFI four-stroke into EFI two stroke petrol engine.
Background technique
Dust cycle of EFI four-stroke gasoline engine of the prior art has suction, pressure, quick-fried, four working procedure of row, and bent axle rotated for two weeks can finish the one action cycle, and efficient is lower.In order to increase work efficiency, two stroke petrol engine appears in the prior art, and there are some defectives in two-stroke gasoline engine of the prior art: 1, rough running, gasoline will mix with lubricant oil, causes engine life to reduce; 2, burning is insufficient, and exhaust emission is serious.
The model utility content
The purpose of this utility model is to improve the deficiencies in the prior art, on the four-stroke petrol engine of existing EFI basis, provide that a kind of advantage that will have EFI four-stroke and two stroke engine now combines, high working efficiency, sufficient combustion, the long EFI four-stroke that changes of life-span be the two stroke petrol engine of EFI.
The purpose of this utility model is achieved in that
The EFI four-stroke that the utility model provides changes the two stroke petrol engine of EFI into and comprises an existing EFI four stroke engine, be provided with piston in the cylinder wherein cylinder is separated into two isolated mutually chambers, on the cylinder head of the piston relative one side cavity, be provided with intake valve with piston rod, exhaust valve, oil nozzle and spark plug, also comprise the cam mechanism that opens and closes intake valve and exhaust valve, its as prior art be connected with bent axle, cam face on it and position are for according to adapting to requirement setting that EFI two-stroke starter valve opens and closes and being associated with described intake valve and exhaust valve; It is characterized in that: an end that on the suction port of described intake valve, connects a compressed air inlet pipe, also comprise an air pump, its suction port is communicated with atmosphere, and its pressurized gas outlet is connected the other end of described suction tude, also is provided with the gas storage knock out drum on suction tude; The active bent axle of described air pump is connected with the bent axle of described motor, makes the air pump work that drives to produce pressurized gas when engine running gets up.
It is such that this four-stroke changes two stroke petrolic working procedure into: when piston with respect to valve when the forward terminal of cylinder moves a certain distance backward, intake valve is backed down by the cam mechanism that is provided with, the pressurized gas that pressurization obtains through air pump enter cylinder, at this moment promptly by oil nozzle oil spout in cylinder, simultaneously, plug ignition, blast, promote the aft terminal that piston moves backward to cylinder, then, piston turns back to the forward terminal of cylinder, in this process cam mechanism exhaust valve is backed down and carries out exhaust.Like this, just make the four-stroke starter realize the two stroke operation process.
The arc lid that the front end cylinder head of described cylinder changes the evagination of four stroke engine cylinder in the prior art is flat cylinder head, and piston is provided with one between piston end surface and the described flat cylinder head bottom and makes it unlikely gap of colliding when the position of forward terminal.
The active bent axle of described air pump with the linkage structure of the bent axle of described motor can be: the flywheel shaft that the active bent axle of air pump is connected with engine crankshaft connects, and perhaps the active bent axle of air pump is connected with the bent axle of motor or the flywheel shaft that links to each other with bent axle by transmission device.
The gas storage knock out drum that is provided with on described suction tude is preferably two gas holder, with the air pump adjacency be the higher pressure pan of pressure, with the intake valve adjacency be the lower compensator of pressure, but on the pipeline between two gas holder, establish an Air-regulating valves.
But comprise a valve rod and a valve seat on the described Air-regulating valves, one Returnning spring is set between valve rod and the valve seat, one end of this valve rod places in this Air-regulating valves valve body, connect valve member, the other end of valve rod stretches out hermetically outside valve body, which is provided with a connection set that is connected with gas pedal, but the feasible open degree of controlling this Air-regulating valves by the effect gas pedal.
The described connection set that is connected with gas pedal is: connect an end of lever at the overhanging end of described valve rod, the other end of this lever is used to connect gas pedal, is provided with a fulcrum axis hole between these lever two ends, is located on the fulcrum shaft; The position of described Returnning spring is: when stepping on the throttle pedal, by lever pulling valve rod, the gas of Air-regulating valves increases by the cross section and compresses this Returnning spring, and Returnning spring resets, and the gas of Air-regulating valves reduces by the cross section.
But by the described Air-regulating valves of gas pedal control.But acting as of Air-regulating valves: but by regulating the air pressure in the adjustable compensator of Air-regulating valves, the air inflow of coming control cylinder by the air pressure in the control compensator.Because the fuel injection quantity of electronic oil injection motor is controlled according to air inflow, so, by the amount that the control pressurized gas enters cylinder, can reach the rotating speed of control motor and the purpose of power.
The EFI four-stroke that the utility model provides changes the two stroke petrol engine of EFI into and has realized the high efficiency operation mode of two-stroke by input pressurized gas in suction valve.The device that pressurized gas are provided is cover air pump and a pressurized gas delivery line, and structure is very simple, and this petrol engine combines the advantage of existing four-stroke and two stroke engine, and high working efficiency, sufficient combustion, life-span are long.Further, by knock out drum is set, pressure pan and compensator are set especially on suction tude, but establish Air-regulating valves betwixt and be controlled by gas pedal, it is adjustable to make that this petrolic rotating speed, power etc. are.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of existing EFI four-stroke gasoline engine;
The EFI four-stroke that Fig. 2 provides for the utility model changes the two stroke petrolic structural representation of EFI into;
But Fig. 3 is the structural representation of the Air-regulating valves on the petrol engine shown in Figure 2.
Embodiment
Be illustrated in figure 1 as existing four-stroke gasoline engine, it comprises cylinder 1, in cylinder 1, be provided with piston 2, it is divided into two isolated mutually chambers with cylinder, termination at a chamber relative with the piston rod 21 (not marking among 21 figure herein) of piston 2 is provided with cylinder head 3, itself and cylinder junction point are the arc cylinder head of evagination, when piston 2 is in the immediate forward terminal of cylinder head, are provided with a space between the end face of piston 2 and the arc cylinder head 3.On cylinder head 3, be provided with intake valve 4, exhaust valve 5, oil nozzle 6 and spark plug 7.
The four-stroke that changes that the utility model provides is that two stroke petrol engine is improved on existing four-stroke gasoline engine basis as shown in Figure 1, similarly be provided with piston 2 in the cylinder 1 wherein cylinder 1 is separated into two isolated mutually chambers, on the cylinder head 3a of piston 2 one side cavity relative, be provided with intake valve 4 with piston rod 21, exhaust valve 5, oil nozzle 6 and spark plug 7, also comprise the cam mechanism (not shown) that opens and closes intake valve 4 and exhaust valve 5, it is connected with the bent axle (not shown) by connecting rod as the prior art piston, and cam structure on it and position are for (both crankshaft rotating one circle advanced according to the requirement setting that adapts to the keying of two-stroke starter air valve, each opens exhaust valve once); Connect an end of a compressed air inlet pipe 8 on the suction port of intake valve 4, also comprise an air pump 9, its pressurized gas outlet is connected the other end of suction tude 8, also is provided with the gas storage knock out drum on suction tude 8; The active bent axle of air pump 9 is connected with the bent axle of motor, makes the air pump work that drives to produce pressurized gas when engine running gets up.
Concrete, the active bent axle of air pump 9 can connect with the flywheel shaft that is connected with engine crankshaft, perhaps, the active bent axle of air pump passes through transmission device, for example on the active bent axle of air pump with bent axle that piston is connected on gear is set on the flywheel shaft that connects respectively, two gears are meshed, and perhaps also mesh other gear between this two gear and carry out transmission of movement.Gear drive is connected with the bent axle of motor or the flywheel shaft that links to each other with bent axle.
The arc lid that the front end cylinder head 3a of cylinder 1 changes the evagination of four stroke engine cylinder in the prior art is flat cylinder head, and piston is provided with one between piston end surface and the described flat cylinder head bottom and makes it unlikely gap of colliding when the position of forward terminal.
When piston is that the summit is when moving down by forward terminal, intake valve is opened, pressurized air moment enters cylinder, because compressed-air actuated pressure is equal to the conventional engine cylinder air pressure in when compression, piston moves down the required space of abdicating also only need volume between the arc cylinder head of conventional engine piston piston and evagination when the summit, IC Intake Valve Closes during this period, oil spout, igniting, work done promotes the aft terminal of piston to cylinder.Exhaust valve is opened during piston stroking upward then, piston stroking upward exhaust valve closing to the limit the time.
The gas storage knock out drum that is provided with in described suction tude is two gas holder 10a and 10b, with the gas holder 10a of air pump adjacency be the higher pressure pan of pressure, with the gas holder 10b of intake valve adjacency be the lower compensator of pressure, but on the pipeline between two gas holder, establish an Air-regulating valves 10c.But has a valve rod 11 on the Air-regulating valves 10c, between itself and the valve seat Returnning spring 12 is set, one end of this valve rod 11 places in this Air-regulating valves valve body 13, connect valve member 14, the other end of valve rod 11 stretches out hermetically outside valve body, connects an end of lever 15, the other end of this lever 15 is used to connect gas pedal 16, be provided with a fulcrum axis hole between these lever 15 two ends, be located on the fulcrum shaft 17, this fulcrum shaft 17 is supported on the car body during use; The position of Returnning spring 12 is: when stepping on the throttle pedal, by lever 15 pulling valve rods 11, the gas of Air-regulating valves increases by the cross section and compresses this Returnning spring 12, and when unclamping gas pedal 16, Returnning spring resets 12, and the gas of Air-regulating valves reduces by the cross section.Be provided with centering guide pad 18 on valve member 14, be provided with guiding groove on valve body, guide pad 18 is located in the guiding groove, makes valve member 14 can guarantee that it is to neutrality when moving the adjusting aperture with respect to valve body.
Depress the pull bar of gas pedal by throttle drag-line pulling Air-regulating valves, the piston type valve member 14 of pull bar and Air-regulating valves links, the tapered front end of piston type valve member 14 and the conical seat of valve seat draw back, the tracheae that makes is freely opened, and the high pressure air in the pressure pan 10a is quickened to enter compensator 10b to reach the purpose of intensifying cylinder air inflow.Because of Air-regulating valves piston type valve member 14 is the taper that is harmonious with valve seat, so can control air inflow freely by the height that depresses gas pedal.Unclamp the pedal back piston and return to valve seat, leave appropriate gap with valve base chamber, required pressurized gas during the supply engine idle running at no external force active state lower piston formula valve member 14 by the draught head between spring and two gas tanks.
But by the described Air-regulating valves of gas pedal control.It act as: the air inflow of coming control cylinder by the air pressure of control in the compensator.Because the fuel injection quantity of electronic oil injection motor is controlled according to air inflow, so, can reach the rotating speed of control motor and the purpose of power by controlling the amount that pressurized gas enters cylinder.
Become flat cylinder head evening up with the cylinder body junction below with cylinder head on the basis of original four-stroke gasoline engine, when piston stroking upward piston head and cylinder cap bottom leaves the gap of just not colliding to the limit the time, the cam that changes again in the camshaft makes it adapt to the required switching time of two stroke engine, be that steam discharge is that piston opens to the summit from lower to upper the time and closes, the compression vapour that air inlet opens to appropriate amount from top to bottom the time from piston enters cylinder and closes.
In order to make the pressurized gas of enough pressure when just starting, motor is arranged in the compressed air inlet pipe, can connect an electric air pump (not shown on the figure) on the suction tude, the drive unit on this electric air pump is the motor that can be electrically connected electricly with automobile storage battery.This electric air pump can be connected two gas holder 10a and 10b the front, between or on any position of back.
Former four-stroke cylinder cap 3 is a camber, or semi-circular (as shown in Figure 1) intake valve 4 and exhaust valve 5 are that valve is located on the circular arc portion of cylinder 3.Intake valve is opened air inlet when piston 2 is descending, intake valve 4 and exhaust valve 5 Close Alls when piston stroking upward, piston 2 is with the gas compression camber space that forms of arc cylinder head and piston end face so far, oil spout igniting then, produce thrust and promote descent of piston, described arc space also claims the firing chamber, and last piston 2 is up by inertia again, and exhaust valve 5 is opened and finished exhaust.So common four stroke engine acting once needs to drive piston four times up and down, piston will rotate for two weeks by the flywheel that connecting rod drives on bent axle and the bent axle certainly.
And improvement structure of the present utility model is exactly the compression stroke that replaces four stroke engine with the high pressure air that air pump produces, and the segment space of abdicating when descending with piston 2 is as the firing chamber, firing chamber on the former cylinder head like this has not just needed, and with arc cylinder head 3 even up become flat cylinder head 3a after, when piston 2 up exhausts, waste gas fully can be discharged.
So-called descent of piston is opened intake valve allows " gas of appropriate amount " in " the compression vapour of appropriate amount enters cylinder " be exactly that four stroke engine air inlet back piston 2 compresses gas in the jar gas flow in the firing chamber to the limit the time from bottom to top.
Owing to replaced compression stroke with high pressure air, and piston has been in the descending stage during ignition-powering, can make this engine operation extremely steady.
Claims (7)
1. an EFI four-stroke changes the two stroke petrol engine of EFI into, comprise a cylinder, be provided with piston in the cylinder cylinder is separated into two isolated mutually chambers, on the cylinder head of the piston relative one side cavity, be provided with intake valve, exhaust valve, oil nozzle and spark plug with piston rod, also comprise the cam mechanism that opens and closes intake valve and exhaust valve, it is connected with bent axle, and cam structure on it and position are according to adapting to the requirement setting that two-stroke starter valve opens and closes; It is characterized in that: an end that on the suction port of described intake valve, connects a compressed air inlet pipe, also comprise an air pump, its suction port is communicated with atmosphere, and its pressurized gas outlet is connected the other end of described suction tude, also is provided with the gas storage knock out drum on suction tude; The active bent axle of described air pump is connected with the bent axle of described motor, makes the air pump work that drives to produce pressurized gas when engine running gets up.
2. EFI four-stroke according to claim 1 changes the two stroke petrol engine of EFI into, it is characterized in that: the front end cylinder head of described cylinder is flat cylinder head, piston is provided with one between piston end surface and the described flat cylinder head bottom and makes it unlikely gap of colliding when the position of forward terminal.
3. EFI four-stroke according to claim 1 and 2 changes the two stroke petrol engine of EFI into, it is characterized in that: the gas storage knock out drum that is provided with in described suction tude is two gas holder, with the air pump adjacency be the higher pressure pan of pressure, with the intake valve adjacency be the lower compensator of pressure, but on the pipeline between two gas holder, establish an Air-regulating valves.
4. EFI four-stroke according to claim 3 changes the two stroke petrol engine of EFI into, it is characterized in that: but comprise a valve rod and a valve seat on the described Air-regulating valves, one Returnning spring is set between valve rod and the valve seat, one end of this valve rod places in this Air-regulating valves valve body, connect valve member, the other end of valve rod stretches out hermetically outside valve body, which is provided with a connection set that is connected with gas pedal, but the feasible open degree of controlling this Air-regulating valves by the effect gas pedal.
5. EFI four-stroke according to claim 4 changes the two stroke petrol engine of EFI into, it is characterized in that: the described connection set that is connected with gas pedal is: an end that connects lever at the overhanging end of described valve rod, the other end of this lever is used to connect gas pedal, between these lever two ends, be provided with a fulcrum axis hole, be located on the fulcrum shaft; The position of described Returnning spring is: when stepping on the throttle pedal, by lever pulling valve rod, the gas of Air-regulating valves increases by the cross section and compresses this Returnning spring, and Returnning spring resets, and the gas of Air-regulating valves reduces by the cross section.
6. EFI four-stroke according to claim 1 changes the two stroke petrol engine of EFI into, it is characterized in that: connect an electric air pump on described suction tude.
7. EFI four-stroke according to claim 6 changes the two stroke petrol engine of EFI into, it is characterized in that: the drive unit on this electric air pump is the motor that is electrically connected electricly with automobile storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201408441U CN201025113Y (en) | 2007-03-23 | 2007-03-23 | Gasoline engine of electrical spraying two-stroke changed from electrical spraying four-stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201408441U CN201025113Y (en) | 2007-03-23 | 2007-03-23 | Gasoline engine of electrical spraying two-stroke changed from electrical spraying four-stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201025113Y true CN201025113Y (en) | 2008-02-20 |
Family
ID=39098972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201408441U Expired - Fee Related CN201025113Y (en) | 2007-03-23 | 2007-03-23 | Gasoline engine of electrical spraying two-stroke changed from electrical spraying four-stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201025113Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233789A (en) * | 2013-05-17 | 2013-08-07 | 朱譞晟 | Multi-mode two-stroke atkinson cycle internal-combustion engine with fully overhead valve |
| CN105927378A (en) * | 2016-06-30 | 2016-09-07 | 苏喜清 | Two-stroke engine transformed from four-stroke engine and working method of two-stroke engine |
| CN106640391A (en) * | 2016-12-14 | 2017-05-10 | 苏州千层茧农业科技有限公司 | Engine torsion actuator |
-
2007
- 2007-03-23 CN CNU2007201408441U patent/CN201025113Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233789A (en) * | 2013-05-17 | 2013-08-07 | 朱譞晟 | Multi-mode two-stroke atkinson cycle internal-combustion engine with fully overhead valve |
| CN105927378A (en) * | 2016-06-30 | 2016-09-07 | 苏喜清 | Two-stroke engine transformed from four-stroke engine and working method of two-stroke engine |
| CN106640391A (en) * | 2016-12-14 | 2017-05-10 | 苏州千层茧农业科技有限公司 | Engine torsion actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 |