CN103321744B - No-cylinder-cover double-combustion-chamber horizontal type four-stroke internal combustion engine - Google Patents
No-cylinder-cover double-combustion-chamber horizontal type four-stroke internal combustion engine Download PDFInfo
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- CN103321744B CN103321744B CN201310295660.2A CN201310295660A CN103321744B CN 103321744 B CN103321744 B CN 103321744B CN 201310295660 A CN201310295660 A CN 201310295660A CN 103321744 B CN103321744 B CN 103321744B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention provides a no-cylinder-cover double-combustion-chamber horizontal type four-stroke internal combustion engine which comprises a cylinder body, special-shaped pistons, a crank-link mechanism and a valve seat air distributing system. An air cylinder is arranged inside the cylinder body. Two special-shaped piston heads are arranged inside the air cylinder in a butt joint mode. The special-shaped piston heads are connected with the crank-link mechanism and then connected with the valve seat air distributing system in a gear meshing mode so that the two special-shaped pistons move synchronously in the opposite direction in the air cylinder, and therefore the two special-shaped pistons, the crank-link mechanism and the valve seat air distributing system finish the four-stroke motion together. Moreover, four piston grooves and two piston top inclined faces are arranged in the positions of heat power banks of the special-shaped pistons to avoid opening and closing of a valve of the valve seat air distributing system. When the special-shaped pistons run to the top dead center of a compression stroke, two combustion chambers with the same size are formed in the positions of the gaps of the pistons top inclined faces and the valve. The no-cylinder-cover double-combustion-chamber horizontal type four-stroke internal combustion engine has the advantages of being high in compression ratio, high in rotating speed, stable in operation, large in torque power and long in service life, does not knock easily, saves energy, reduces emission, is green and protects environment.
Description
Technical field
The present invention relates to a kind of stroke piston combustion engine, particularly relate to a kind of without the horizontal quartastroke engine in cylinder cap double combustion chamber.
Background technique
Internal-combustion engine is the one of heat engine, can by the chemical energy mechanical energy of fuel.General implementation is, fuel and air mixed combustion, and produce heat energy, when gases are heated, they expand, is converted into mechanical energy externally does work by mechanical device.Internal-combustion engine has application widely, and the motor of automobile, boats and ships, aircraft, engineering machinery etc. is substantially all internal-combustion engine.
Modal internal-combustion engine belongs to stroke piston combustion engine.After the interior air of cylinder and the mixture combustion of fuel, pressurized gas promote piston crank linkage mechanism and produce moment of torsion, and externally done work by bent axle, namely the chemical energy of fuel is finally converted into the kinetic energy of crankshaft rotating.Petrol engine is generally spark-ignition engine, and the mixed gas of fuel and air is easily ignited by the spark plug at the end of compression stroke, expands immediately and promotes piston reciprocates; And diesel engine is also compression ignition engine, fuel is generally injected into that cylinder is concurrent is conigenous combustion, and the mixed gas after spontaneous combustion has also promoted piston because of expansion.Except lighting with except these two kinds of major ways of compression ignite, also having combined type combustion process, having the feature of lighting with compression ignition internal combustion engine concurrently.
The operation cycle of four-stroke stroke piston combustion engine is divided into air inlet, compression, acting, exhaust Four processes altogether.By air inlet and exhaust, fuel and working medium are changed, working stroke is then be mechanical energy by thermal energy.What complete circulation by four strokes (namely piston moves to the other end from one end of cylinder) is referred to as four stroke cycle, this form of the many employings of motor car engine.
The internal-combustion engine that current tradition uses is provided with cylinder cap, and combustion chamber surface to volume ratio is larger, more easily produces pinking, so allowable compression ratio is lower, again because cylinder one piston, stroke piston diameter is larger, so piston linear velocity is higher, limit the rotating speed of traditional combustion engine.
Summary of the invention
The technical assignment of technical problem to be solved by this invention and proposition improves prior art, there is provided a kind of without the horizontal quartastroke engine in cylinder cap double combustion chamber, solve the long limit engine rotating speed of piston stroke of internal-combustion engine in current technology, the larger problem easily producing pinking of combustion chamber surface to volume ratio.
For solving above technical problem, technological scheme of the present invention is:
A kind of without the horizontal quartastroke engine in cylinder cap double combustion chamber, comprise cylinder body, special-shaped piston, connecting rod, valve seat insert gas distribution system, a cylinder is had in cylinder body, two special-shaped pistons are head to head settled in the cylinder, the parallel two ends being assemblied in cylinder body of the bent axle of two connecting rods, two special-shaped pistons are respectively connected with the bent axle of the connecting rod at cylinder body two ends by a connecting rod, two valve seat insert gas distribution systems adopt the mode of transition fit processing to be arranged in the valve seat insert bearing bore circumferentially of cylinder body center by valve seat insert, so that dismounting and heat radiation, and install valve seat pad additional for sealing, connecting rod is provided with crankshaft gear, camshaft gear wheel that is each and a valve seat insert gas distribution system is connected with a joggle, the camshaft gear wheel of two valve seat insert gas distribution systems is connected with a joggle togather again, reach two camshaft gear wheels and two crankshaft gear timings synchronous and along phase counterclockwise rotation, two special-shaped piston synchronous relative motions in the cylinder, thus realize two special-shaped pistons, connecting rod and valve seat insert gas distribution system have worked in coordination with four-stroke, and the firepower bank place of special-shaped piston is processed with four pistion recess and two piston top inclined-planes to dodge the keying of valve seat insert gas distribution system valve, and when special-shaped piston runs to compression stroke top dead center, piston top inclined-plane, pistion recess forms the identical firing chamber of two volumes with space, valve seat insert place.In the cylinder of traditional internal-combustion engine, cylinder one piston, thus the running length of piston is longer, so the space rate of piston is higher, but the rotating speed being transformed into crank gear is just lower, causes the moment of torsion of internal-combustion engine less.At this present invention device two special-shaped pistons in the cylinder of internal-combustion engine, and be synchronized with the movement in opposite directions, the total volume expanded after fuel combustion is constant, but transmit the special-shaped piston giving both direction, the stroke of each special-shaped piston is reduced by half, the space rate of special-shaped piston reduces even so, but its conversion improves to the rotating speed of crank gear, and double-crankshaft is superposed by crankshaft gear and camshaft gear wheel meshing torque thus improves the moment of torsion of internal-combustion engine.Two special-shaped pistons in cylinder are connected on the connecting rod of same structure, connecting rod is connected with camshaft gear wheel by the mode of gears meshing again, two camshaft gear wheels are connected with a joggle togather again, thus make two special-shaped pistons form the entirety of acting in agreement, the high consistency of both motion speed, appearance special-shaped piston is avoided to run to cylinder axis, and another profiled air cylinder is also in the phenomenon at cylinder edge, make two special-shaped piston energy synergy movements, effectively complete aspirating stroke, compression stroke, the action of expansion stroke and whole four strokes of exhaust stroke.Piston top inclined-plane.The surface to volume ratio of two firing chambers that pistion recess and space, valve seat insert place are formed is smaller, and the burning of fuel can be very rapid, therefore not easily pinking occurs, reduce vibrations and the noise of internal-combustion engine, increase operation stability.
Further, one and above cylinder can be set in cylinder body, carry out multi cylinder interlock and improve output power.
Further, special-shaped piston be circumferentially processed with annular groove for ring installation for sealing.
Further, valve seat insert gas distribution system can be provided with four groups, the distribution of four groups of valve seat insert gas distribution systems is symmetrical along the cross-section center line of cylinder, cylinder is also provided with spark plug for Spark ignition type petrol engine or diesel oil injection nozzle between two groups of valve seat insert gas distribution systems for compression ignition diesel engine.Four groups of valve seat insert gas distribution systems are set in the central position of cylinder, effectively can improve gas flow during turnover gas, improve the efficiency of turnover gas, avoid fuel combustion insufficient, cause the power reduction of internal-combustion engine, and insufficient dustiness of exhausting air that also can cause that burns is higher.Spark plug is lighted a fire when special-shaped piston moves to compression top center fire fuel, and fuel combustion expansion work promotes special-shaped piston and advances to the both sides of cylinder.When special-shaped piston is advanced to the two ends of cylinder, diesel oil injection nozzle moves to compression top center at special-shaped piston and spray into diesel oil in cylinder, and diesel combustion expands and promotes special-shaped piston and advance to the both sides of cylinder.
Further, camshaft gear wheel and crankshaft gear adopt herringbone tooth or straight-tooth, helical teeth, reduce the noise of gear train and the end thrust of rotatingshaft.
Further, valve seat insert gas distribution system comprises valve seat insert, valve, valve collar, spring, spring seat, porting, valve rocker and camshaft, porting and the valve seat insert UNICOM be arranged on cylinder body, valve collar is arranged on valve seat insert, valve is connected with spring seat with valve collar through valve seat insert, top valve adjustments nut valve gap adjustment, spring to be placed on valve and between valve seat insert and spring seat, to reach the effect of closing valve for the reset of valve, camshaft is by camshaft gear wheel driven rotary, valve rocker is made to open and close valve along pitman arm shaft rotary compression spring.In special-shaped piston four-stroke process, camshaft rotates a circle 360 °, and when its salient point direction rotates to the point of contact of valve rocker, jack-up valve rocker makes it Compress Spring, thus opens valve, reaches the function of air inlet and exhaust.
Further, also cooling system is provided with without the horizontal quartastroke engine in cylinder cap double combustion chamber, the cylindrical shell of cylinder body is provided with the water jacket of ring-type, water tank is connected on thermostat by sewer and is connected on water pump, being transported in water jacket by intake pipe after cooling water pressurization, after cooling internal combustion engines, completing cool cycles through getting back to water tank by outlet pipe.Adopt water-cooled circulating cooling system, also energy-conserving and environment-protective while cooling effectiveness is high, thermostat regulates the water yield entering radiator automatically according to the height of cooling water temperature, change the range of DO of water, to regulate the heat dissipation potential of cooling system, ensure that internal-combustion engine works in suitable temperature range, can guarantee that internal-combustion engine was unlikely to cold when winter.
Further, water tank is provided with fan electromotor, adopts air-cooled to cooling water temperature.
Compared with prior art, the invention has the advantages that:
Of the present inventionly overcome the deficiencies in the prior art without the horizontal quartastroke engine in cylinder cap double combustion chamber, traditional firing chamber is separated into the less firing chamber of two volumes, thus burning not easily pinking rapidly, and double-piston runs simultaneously, therefore allowable compression ratio is higher; Stroke piston diameter is than smaller, and piston linear velocity is less, and allowable rotating speed is higher, and the positive inhour of two cover piston crank linkage mechanisms of equal in quality rotates, and alleviates vibrations and the noise of internal-combustion engine; Fabricated valve seat insert assembly, for maintain and replace valve assembly provides conveniently, reduces cost; Internal combustion engine operation of the present invention is steady, and torque power is large, and the life-span is long, and energy-saving and emission-reduction, environmental protection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of special-shaped piston of the present invention;
Fig. 3 is the cross-sectional structure schematic diagram of petrol engine Four valve valve of the present invention;
Fig. 4 is the cross-sectional structure schematic diagram of the diesel engine four family of power and influence of the present invention;
Fig. 5 is the structural representation of air valve of the present invention;
Fig. 6 is the structural representation of cooling system of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention is open a kind of without the horizontal quartastroke engine in cylinder cap double combustion chamber, and to realize internal combustion engine high pressure contracting ratio, high rotating speed, for the purpose of operating steadily.
See Fig. 1, without the horizontal quartastroke engine in cylinder cap double combustion chamber, comprise cylinder body 1, special-shaped piston 2, connecting rod, valve seat insert gas distribution system, a cylinder 3 is had in cylinder body 1, two special-shaped pistons 2 are head to head placed in cylinder 3, the parallel two ends being assemblied in cylinder body 1 of bent axle 32 of two connecting rods, two special-shaped pistons 2 are respectively connected by the bent axle 32 of a connecting rod 4 with the connecting rod at cylinder body 1 two ends, the mode that the valve seat insert 13 of two valve seat insert gas distribution systems adopts transition fit to process is arranged in the valve seat insert bearing bore 5 that cylinder body 1 hits exactly circumferentially, so that dismounting and heat radiation, and install valve seat pad 33 additional for sealing, connecting rod is provided with crankshaft gear 6, camshaft gear wheel 7 that is each and a valve seat insert gas distribution system is connected with a joggle, the camshaft gear wheel 7 of two valve seat insert gas distribution systems is connected with a joggle togather again, camshaft gear wheel 7 is 2:1 with the gear ratio of crankshaft gear 6, camshaft gear wheel 7 and crankshaft gear 6 adopt herringbone tooth, reduce the noise of gear train and the end thrust of rotatingshaft, reach two camshaft gear wheels 7 and the timing of two crankshaft gears 6 synchronous and along phase counterclockwise rotation, two special-shaped piston 2 synchronous relative motions in cylinder 3, thus realize two special-shaped pistons 2, connecting rod and valve seat insert gas distribution system have worked in coordination with four-stroke.More than one cylinder 3 can be set in the cylinder body 1 of internal-combustion engine, carry out multi cylinder interlock and improve output power.
See Fig. 2, the firepower bank place of special-shaped piston 2 is processed with four pistion recess 9 and two piston top inclined-planes 10 to dodge the keying of valve seat insert gas distribution system valve 14, and when special-shaped piston 2 runs to compression stroke top dead center, piston top inclined-plane, pistion recess and space, valve seat insert place form the identical firing chamber 8 of two volumes.Special-shaped piston 2 be circumferentially processed with annular groove 11 for ring installation.
See Fig. 3 and Fig. 4, valve seat insert gas distribution system can be provided with four groups, four groups of valve seat insert gas distribution system distributions are symmetrical along the cross-section center line of cylinder 3, cylinder 3 is also provided with spark plug 12 or diesel oil injection nozzle 31 between two groups of valve seat insert gas distribution systems, the firing mode different with petrol engine according to diesel engine settles different elements, and air intake valve and valve of giving vent to anger respectively arrange two, can improve other efficiency of transmission, guarantee fuel combustion is abundant, reduces exhaust emission.
See Fig. 5, valve seat insert gas distribution system comprises valve seat insert 13, valve 14, valve collar 15, spring 16, spring seat 17, porting 18, valve rocker 19 and camshaft 20, the mode that valve seat insert 13 adopts transition fit to process with the valve seat insert bearing bore 5 on cylinder body 3 is installed, so that dismounting and heat radiation, porting 18 and valve seat insert 13 UNICOM, valve collar 15 is arranged on valve seat insert 13, valve 14 is through valve seat insert 13 and valve collar 15, valve adjustments nut 21 valve gap adjustment, the top of valve 14 is also connected with spring seat 17, spring 16 to be placed on valve 14 and between valve seat insert 13 and spring seat 17, to reach the effect of closing valve 14 for the reset of valve 14, camshaft 20 is by camshaft gear wheel 7 driven rotary, valve rocker 19 is made to open and close valve along pitman arm shaft 22 rotary compression spring 16.
See Fig. 6, also cooling system is provided with without the horizontal quartastroke engine in cylinder cap double combustion chamber, the cylindrical shell of cylinder body 1 is provided with the water jacket 23 of ring-type, water tank 24 is connected on thermostat 27 by sewer 26 and is connected on water pump 28, being transported in water jacket 23 by intake pipe 30 after cooling water pressurization, after cooling internal combustion engines, completing cool cycles through getting back to water tank by outlet pipe 29.Water tank 24 is provided with fan electromotor 25 for cooling.
When internal-combustion engine running of the present invention; two special-shaped pistons 2 in cylinder 3 are synchronized with the movement in opposite directions; drive camshaft gear wheel 7 synchronous rotary of connecting rod and valve seat insert gas distribution system; in the four-stroke process of two special-shaped pistons 2; worked in coordination with the action of opening air valve air inlet and exhaust, meanwhile, cooling system to come into operation heat radiation higher than normal value at temperature cylinder; and quit work when the temperature is low, protection internal-combustion engine.
Below be only the preferred embodiment of the present invention, it should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. one kind without the horizontal quartastroke engine in cylinder cap double combustion chamber, it is characterized in that, comprise cylinder body (1), special-shaped piston (2), connecting rod, valve seat insert gas distribution system, a cylinder (3) is had in cylinder body (1), two special-shaped pistons (2) are head to head placed in cylinder (3), the parallel two ends being assemblied in cylinder body (1) of bent axle (32) of two connecting rods, two special-shaped pistons (2) are respectively connected with the bent axle (32) of cylinder body (1) two ends connecting rod by a connecting rod (4), two valve seat insert gas distribution systems adopt the mode of transition fit processing to be arranged in the valve seat insert bearing bore (5) circumferentially of cylinder body (1) center by valve seat insert (13), so that dismounting and heat radiation, and install valve seat pad (33) additional for sealing, connecting rod is provided with crankshaft gear (6), camshaft gear wheel (7) that is each and a valve seat insert gas distribution system is connected with a joggle, the camshaft gear wheel (7) of two valve seat insert gas distribution systems is connected with a joggle togather again, reach two camshaft gear wheels (7) and the timing of two crankshaft gears (6) synchronous and along phase counterclockwise rotation, two special-shaped piston (2) synchronous relative motions in cylinder (3), thus realize two special-shaped pistons (2), connecting rod and valve seat insert gas distribution system have worked in coordination with four-stroke, the firepower bank place of special-shaped piston (2) is processed with four pistion recess (9) and two piston top inclined-planes (10) to dodge the keying of valve seat insert gas distribution system valve (14), and when special-shaped piston (2) runs to compression stroke top dead center, piston top inclined-plane (10), pistion recess (9) and valve seat insert (13) space, place form the identical firing chamber (8) of two volumes.
2. according to claim 1ly to it is characterized in that without the horizontal quartastroke engine in cylinder cap double combustion chamber, one and above cylinder (3) are set in cylinder body (1), carry out multi cylinder interlock and improve output power.
3. according to claim 1ly to it is characterized in that without the horizontal quartastroke engine in cylinder cap double combustion chamber, described special-shaped piston (2) be circumferentially processed with annular groove (11) for ring installation.
4. according to claim 1 without the horizontal quartastroke engine in cylinder cap double combustion chamber, it is characterized in that, described valve seat insert gas distribution system can be provided with four groups, four groups of valve seat insert gas distribution system distributions are symmetrical along the cross-section center line of cylinder (3), between the upper two groups of valve seat insert gas distribution systems of cylinder (3), be also provided with spark plug (12) or diesel oil injection nozzle (31).
5. according to claim 1 without the horizontal quartastroke engine in cylinder cap double combustion chamber, it is characterized in that, described camshaft gear wheel (7) and crankshaft gear (6) adopt herringbone tooth or straight-tooth, helical teeth, reduce the noise of gear train and the end thrust of rotatingshaft.
6. according to any one of claim 1 to 5 without the horizontal quartastroke engine in cylinder cap double combustion chamber, it is characterized in that, described valve seat insert gas distribution system comprises valve seat insert (13), valve (14), valve collar (15), spring (16), spring seat (17), porting (18), valve rocker (19) and camshaft (20), porting (18) and valve seat insert (13) UNICOM be arranged on cylinder body (1), valve collar (15) is arranged on valve seat insert (13), valve (14) is connected with spring seat (17) with valve collar (15) through valve seat insert (13), valve adjustments nut (21) valve gap adjustment, spring (16) is placed on valve (14) and goes up and be positioned at the effect reaching closedown valve between valve seat insert (13) and spring seat (17) for the reset of valve (14), camshaft (20) is by camshaft gear wheel (7) driven rotary, valve rocker (19) is made to open and close valve along pitman arm shaft (22) rotary compression spring (16).
7. according to any one of claim 1 to 5 without the horizontal quartastroke engine in cylinder cap double combustion chamber, it is characterized in that, described is also provided with cooling system without the horizontal quartastroke engine in cylinder cap double combustion chamber, the cylindrical shell of cylinder body (1) is provided with the water jacket (23) of ring-type, water tank (24) is connected on thermostat (27) by sewer (26) and is connected on water pump (28), be transported in water jacket (23) by intake pipe (30) after cooling water pressurization, cool cycles is completed through getting back to water tank by outlet pipe (29) after cooling internal combustion engines.
8. according to claim 7ly to it is characterized in that without the horizontal quartastroke engine in cylinder cap double combustion chamber, described water tank (24) is provided with fan electromotor (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310295660.2A CN103321744B (en) | 2013-07-15 | 2013-07-15 | No-cylinder-cover double-combustion-chamber horizontal type four-stroke internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310295660.2A CN103321744B (en) | 2013-07-15 | 2013-07-15 | No-cylinder-cover double-combustion-chamber horizontal type four-stroke internal combustion engine |
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| Publication Number | Publication Date |
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| CN103321744A CN103321744A (en) | 2013-09-25 |
| CN103321744B true CN103321744B (en) | 2015-04-15 |
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| CN201310295660.2A Expired - Fee Related CN103321744B (en) | 2013-07-15 | 2013-07-15 | No-cylinder-cover double-combustion-chamber horizontal type four-stroke internal combustion engine |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867297A (en) * | 2014-03-25 | 2014-06-18 | 张珊 | Reciprocating engine |
| CN104989480A (en) * | 2014-05-26 | 2015-10-21 | 董振宝 | Butt joint valve rod of double-distribution opposed engine |
| CN105041467A (en) * | 2015-06-08 | 2015-11-11 | 张义敏 | Double-crankshaft-offset four-stoke horizontal internal combustion engine without cylinder head |
| KR101926681B1 (en) * | 2017-01-02 | 2018-12-11 | 주식회사 코렌스 | Valve assembly with improved cylindrical-cam operation |
| JP6548308B2 (en) * | 2017-01-26 | 2019-07-24 | 株式会社石川エナジーリサーチ | Opposed piston type engine |
| JP6506467B1 (en) * | 2018-12-26 | 2019-04-24 | 株式会社石川エナジーリサーチ | Opposed piston type engine |
| JP6656614B2 (en) * | 2019-03-19 | 2020-03-04 | 株式会社石川エナジーリサーチ | Opposed piston engine |
| JP6870870B2 (en) * | 2020-01-17 | 2021-05-12 | 株式会社石川エナジーリサーチ | engine |
| CN112112730A (en) * | 2020-09-22 | 2020-12-22 | 东风汽车集团有限公司 | Movement structure of opposed fuel oil generator and fuel oil engine |
| CN112503923B (en) * | 2020-11-27 | 2022-04-05 | 合肥三伍机械有限公司 | Double-pushing device for grain dryer |
| CN112983637B (en) * | 2021-04-13 | 2022-11-25 | 江苏星辰星汽车附件有限公司 | Multi-volume chamber cycle engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4307715A1 (en) * | 1993-02-17 | 1993-10-14 | Heinz Jacht | Timing gear with piston head valves for 4-stroke engine - valves are actuated by valve lifters with rollers moving in groove of plate cam |
| US7104227B2 (en) * | 2002-11-08 | 2006-09-12 | Freddie Ray Roberts | Internal combustion engine machine incorporating significant improvements in power, efficiency and emissions control |
| WO2009152592A1 (en) * | 2008-06-17 | 2009-12-23 | Proenca Luiz Carlos Leite | Internal combustion engine with working, piston and control piston |
| CN102644508A (en) * | 2012-05-09 | 2012-08-22 | 李玉龙 | Two-stroke opposed-piston diesel engine |
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