CN102322345A - Two-stroke horizontally opposed double-shaft engine - Google Patents

Abstract

The invention relates to an improvement of a two-stroke horizontally opposed double-shaft engine in the field of internal-combustion engines, in particular to an improvement of a crank connecting rod structure. By utilizing the characteristics of the sealing action of a rotary exhaust valve on an exhaust hole and no direction contact operation between a piston and the wall of a cylinder, a skirt part losing the functions of sealing the exhaust hole and guiding the cylinder is cancelled; a hollow circular connecting rod and a shallow nebular combustion chamber with an upper mark are adopted; a support rib is arranged in the inner cavity of the piston; the weight of a piston connecting rod set is lightened by 20%; the anti-fatigue abrasion and the tension compressive stress performance are increased; the abrasion of the wall of the cylinder and a piston ring are lowered; meanwhile, by utilizing the stroke by cancelling the skirt part, related parts are improved so that the width and the weight of the engine are reduced in the process of having the same working volume; furthermore, the improvement approaches of the transmission system technology provided on the improvement patent literature of same type by the same person are used as the prior art and cooperatively used in the specific embodiment, therefore, the technology of the two-stroke horizontally opposed double-shaft engine is increased comprehensively; and the competitiveness is stronger.

Description

Two-stroke flat opposed twin-spool engine

1, belongs to field of internal combustion engine and relate to two-stroke flat opposed twin-spool engine, the connecting rod of especially this motor.

2, background technique:

Related domain new technology, new structure, new material continue to bring out, and the fast development of development in an all-round way, particularly engineering ceramic material is used, and for the two stroke engine technology is greatly developed, overall application provides the good technical support.Appear at a kind of two-stroke flat opposed twin-spool engine in the patent documentation recently; With the integrated result who is applied to related domain of domestic and international advanced technology achievement, its technical pattern is: act as a fuel with diesel oil, in flattened medial exactly; The cylinder liner (41) that ceramic both sides cast iron was combined in the middle of the cylinder block of two ends projection (14) studded with; Ceramic piston connection rod set (10) flat opposed of two band firing chambers moves in opposite directions, and the kinetic energy that fuel combustion produces is by two-way the accepting of piston head (1);---divide locular wall assembly (16)---annular slip crank assembly (11)---bent axle 22 and device terminal through piston rod group (10) at bent axle (22); Five teeth interlocks secondary three output shaft assemblies (38) and have the dynamic transfer system that the lubricated driving mechanism of gear-box (33) is formed transform to transmit to merge and concentrate, and dispose polynary outside output by load rating; In the gas distribution system; Admission gear is to be core with the common pumping action of two piston rod groups (10); Divide side gas cylinder (27) air inlet of air chamber and the leaf valve (13) of configuration in pairs; Combination gas port (39) band divides and effectively to cooperate jointly between other each parts of intake duct and helical intake (13) and admission gear of the side interlock automatically controlled butterfly air throttle of node (15), and accomplishes under the various operating modes of this machine employing lean burn technology: 15: 1～19: 1 still to the supply of the required air quantity of 22: 1 air fuel ratios.Exhaust gear is by bent axle (22) front end belt pulley, the branch side drive with its constant speed synchronous operation, by multiple tracks bearing (29) support parallel transverse arranged side by side be suspended at the ceramic air-exhaust seat ring (19) that cylinder block (14) lower middle position, cylinder exhaust port edge join go up, have two ceramic rotating exhaust valves (20) of striding 105 ° of crank angle long strip exhaust gas inlet (30), to exhaust valve seat insert (19) and 360 ° of sealings of relief opening, by port timing control keying; Add coaxial be connected on the terminal bead of rotating exhaust valve (20) with its constant speed synchronous operation, impeller and shell become integral body, exhaust outlet join bearing and seal ring, with air vent seat (42) pressurization drainage that be tightly connected movingly, driven shaft streaming air-discharging and supercharging device (31); Under adiabatic state, outwards effectively accomplish exhaust rapidly through outlet pipe (42); An outside has broach shape radiating fin, in take back stream oil duct, circular arc and be sealed and matched face through the conjuncted valve gap of aluminum alloy (21) of ceramic thermal insulation wearing course coating, with two rotating exhaust valves (20) integrally closed in lid; Thereby for the work of other working stage of this cylinder and other cylinder provides omnidistance guarantee.The fuel system that provides the assisting agency of power, fuel supply system to adopt high pressure common rail electric-controlled diesel oil in-cylinder direct injection to join the empty chamber (no capsule formula) of the short nothing of delay period two-way multiple orifice nozzle (25) by bent axle (22) provides fuel; Lubrication system adopts oil pump, pressure oil duct, spray, hit and spatter, soak into the combined type keypoint part and lubricate; Cooling system adopts the Hydraulic Double fan forced air cooling radiation fin natural ventilation type of cooling; Electric equipment adopts the sensing, detection, adjusting, control electronics executive component and the ECU that are suitable for to form a complete and comprehensive system for collecting real estate fees, for this machine provides comprehensive ancillary technique support.

Above-mentioned technical data is from Intellectual Property in China patent announcement: CN201236744Y; Day for announcing 2009.05.13; The patent No.: 200820112756.5; Patent documentation and hereinafter relate to reference and works has " following automotive engineering ", " Hyundai Motor new technology ", " Hyundai Motor technology ", " DENG principle ", " metal surface plasma spray technology " the patented technology notification number as the supporting application of existing technology: CN201486669U; The day for announcing: 2010.5.26, the patent No.: 200920165906.3.

3, summary of the invention

The present invention will address the problem: alleviate piston rod group (10) quality, reduce the eccentric wear of cylinder liner (41) and piston ring (2), wearing and tearing of circular connecting rod (5) antifatigue and tension and compression stress are relatively poor, improve the firing chamber; When improving piston rod group (10), the advantage of utilizing the cancellation piston skirt to produce, reduction motor width and quality.

Technical solution is following: be the basis with the existing technology structure; Utilize rotating exhaust valve (20) to make the piston skirt lose the advantage of guide function in sealing gas port and the cylinder, cancel the skirt section under second road piston ring (2) lower edge the sealing process and the compages factor of cylinder exhaust port and exhaust valve seat insert (19); The piston head (1) of to join shallow nebula firing chamber (9), establishing upper mark (8) with the wrong mutually 180 ° of locating studs of twice opening be housed place the trapezoidal bucket face Ceramic piston ring (2) of piston two side positions, inner chamber under the compression ring lower edge, second road to be provided with the endless belt (3) of supporting rib (4) by several angle around circular connecting rod (5); Whole establishing with the connecting part, top extends out mating edge edge, middle and lower part straight line motion stroke friction surface through wear-resistant molybdenum layer coating; The hollow circle connecting rod (5) that end establishes connecting rod base (12) location fitting plane (7) and tightening screw (6), shorten length is cast as one, and forms no skirt piston rod group (10); Again circular connecting rod (5) rear end is penetrated crankcase (24) from minute locular wall assembly (16) bearing hole; Connect on the connecting rod base (12) that interference is press fit into annular slip crank assembly (11) front end on the spacing slide rail (23) that crankcase (24) bottom is provided with along running orbit, and from the rear end fastening locking; Annular slip crank assembly (11) is inserted in from the rear end, assemble and be connected on this side rod journal (17) of supporting change reach position, both formed connecting rod; Again with equipped on itself and the terminal bead of both sides bent axle (22); Five teeth interlock secondary, three output shaft assemblies (38) as the supporting application of existing technology; Driving mechanism with independent gear lubrication parts links to each other, and constitutes the dynamic transfer system of two-stroke flat opposed twin-spool engine; Press the load rating configuration, polynary outside output power moment of torsion.

In above-mentioned development, be reduction motor width and quality; The matching performance architecture advances measure of taking has: two skirt sections by vacant add up to stroke dimension capable of using; Corresponding shortening cylinder block width (14) and circular connecting rod (5) length; Still keeping relief opening and making up under the situation of gas port (39) first wife's gas phase position; Leaf valve (18) is established in the relevant position in suction port, the siphonage of moving with after stoping piston rod group (10) under state, producing when up from lower dead center and make the inlet stream backflow the cylinder; The piston rod group is moved after (10), shortens the cylinder block width, makes under the situation that displacement do not become, and the piston lower dead center will be lower than combination gas port (39) lower edge, the effect of bleeding that piston rod group (10) is descending, and it is residual to have part waste gas; This can carry out exhaust gas recirculation just, participates in burning, reduce noxious emission (NO _X) favorable factor, only needing suitably, therefore the control residual quantity will make discharging reduce in 20%.

Beneficial effect: the two-stroke flat opposed twin-spool engine after the improvement, when keeping the existing technology advantage; Piston rod group (10) quality significantly alleviates about 1/3rd, and wearing and tearing of circular connecting rod (5) antifatigue and tension and compression stress performance improve, and piston ring (2) alleviates with the eccentric wear and the wearing and tearing of cylinder wall, and discharging reduces the motor overall width and quality is significantly reduced.Become technical merit therefrom and improve comprehensively, more competitive, meet national industrial policies lead, heat-insulating property is excellent new and effective, energy-conserving and environment-protective two-stroke flat opposed twin-spool engine.

4, description of drawings

Fig. 1, improvement back two-stroke flat opposed twin-spool engine piston rod group are analysed and observe and structural representation;

Fig. 2, improvement back two-stroke flat opposed twin-spool engine broken section and cross-sectional configuration schematic representation;

Fig. 3, two-stroke flat opposed twin-spool engine rotating exhaust valve and exhaust valve seat insert and air-discharging and supercharging device portion analyse and observe and assembly structure figure;

Fig. 4, this figure are that other is to improve transmission system broken section and the overall structure plan view that proposes in the patent documentation of two-stroke flat opposed twin-spool engine.

Accompanying drawing accessory numbering and title:

1. piston head; 2. piston ring; 3. endless belt; 4. supporting rib; 5. circular connecting rod; 6. the fastening screw of connecting rod; 7. connecting rod locating face; 8. upper mark; 9. shallow nebula firing chamber; 10. piston rod group; 11. annular slip crank assembly; 12. connecting rod base; 13. air throttle and intake duct; 14. cylinder block; 15. air vent seat; 16. divide the locular wall assembly; 17. rod journal and slide block; 18. leaf valve and air inlet/outlet; 19. exhaust valve seat insert and relief opening; 20. rotating exhaust valve; 21. conjuncted valve gap; 22. bent axle; 23. spacing slide rail chute; 24. crankcase; 25. high-pressure common rail and oil sprayer; 26. piston ring locating stud; 27. gas cylinder; 28. belt pulley; 29. outlet valve bearing and bearing support; 30. waste gas inlet; 31. air-discharging and supercharging device; 32. one-level gear output shaft; 33. gear-box and shell; 34. driven gear shaft and bearing; 35. secondary gear output shaft and shell; 36. gear oil pump and chain; 37. one-level gear output shaft shell; 38. five teeth interlock secondary, three output shaft assemblies; 39. combination gas port; 40. air vent seat and outlet pipe; 41. cylinder liner; 42. air throttle linkage rod; 43. crank backboard.

5, specific embodiments one

This two-stroke flat opposed twin-spool engine is to the improvement of connecting rod on the existing technology basis; Both made fuel, shortened the flat side of cylinder block (14) profile of width and crankcase (24) cast solid of cylinder two lateral processes, the short cast iron cylinder cover (41) in edge three segments combined middle long ceramic both sides in the cylinder with diesel oil; The piston head (1) of flat opposed in same cylinder established shallow nebula firing chamber, with the trapezoidal bucket of twice face, mutually wrong 180 ° of Ceramic piston rings (2) that place the cylinder both sides of opening of upper mark (8) and assembling band locating stud (26); Endless belt (3) on the compression ring lower edge, second road and piston head (1) integral body are provided with the connecting part with the front end end face and extend out the edge; Middle and lower part straight line motion friction surface is handled through plating molybdenum wearing course; Rearward end is provided with connecting rod seat plane (7) and in core hole (10), establishes circular connecting rod (5) cast solid of hollow that binding thread (6) shortens length, forms the pottery of having cancelled skirt section under the compression ring lower edge, second road and does not have skirt piston rod group (10); Circular connecting rod (5) rear end is passed from minute locular wall assembly (16) bearing hole, gets in the crankcase (24), divides locular wall assembly (16) to be fastened on the terminal rigging position of cylinder liner (41) with bolts assemblies; Connecting rod base (12) through the elevated temperature heat expansion; Interference fit is press fit in the connecting rod assembling stand hole, and at rear side with the firm locking of bolt (6), be connected to again to be located in and be arranged on annular slip crank assembly (11) front end on the spacing slide rail in crankcase (24) bottom (23) along running orbit; Annular slip crank assembly (11) installs on the rod journal (17) from the rear side cover; Fastening postnotum (43), and then be connected with the bent axle (23) of anterior displacement postpone wholely constitutes connecting rod; On the terminal bead of gear-box (33) inside crankshaft (22), the branch side disposes the one-level gear output shaft (32) of a tooth one, and after often nibbling with adjacent driven gear shaft (34), common more often nibbling with the secondary gear output shaft (35) that is in the neutral position cooperates; The band oil sealing is housed on each output shaft joins the shell of bearing, connecting flange is equipped with in the output shaft termination; Low pressure gear oil pump, the oil duct of also on driven gear shaft, being furnished with the drive of sprocket wheel and chain in the gear-box (33) lead to each gear-bearing, and the lubricated employing of gear is soaked into.So far constitute twin shaft five teeth interlock secondary three output shaft assemblies (38), can be by the dynamic transfer system of the polynary output of different load hierarchical arrangement.The gas handling system of distribution device is that two-piston connection rod set (10) is moved common pumping action in opposite directions in the cylinder; The branch side disposes gas cylinder (27), air chamber air inlet/outlet and the leaf valve (18) of blowing air filter cleaner in pairs; Combination gas port (39), band divide the intake duct of the interlock of side connecting rod, the automatically controlled butterfly air throttle in assembly place (15) and helical intake parts assembly such as (13) to constitute; Through effective coordinated, and ensure that required 15: 1～19: 1 of engine application lean burn technology still supplies with to a large amount of air of 22: 1 air fuel ratios; Vent systems be by bent axle (22) through belt pulley (28) drive, by multiple tracks bearing (29) support, with cylinder at right angles, valve body is provided with circular rectangular exhaust gas inlet (30) in the two ends, strides 105 ° of crank angles, the branch side parallel ceramic rotating exhaust valve (20) that is suspended at cylinder block (14) lower middle position arranged side by side; On it and cylinder block (14) relief opening (19) inlay, be with two row ceramic air-exhaust seat rings (19) of circular arc sealing strip; 360 ° of whole process are sealed and matched, and open and close correct time by phase place; Add the shallow type impeller of driven shaft streaming, shell and stream of the synchronous constant speed operation of the terminal coaxial series connection of rotating exhaust valve (20) and become one; The rear end exhaust outlet is joined seal ring and bearing and air vent seat (40); Be tightly connected movingly, the pressurization drainage of air-discharging and supercharging device (31) is under adiabatic state; Outside machine, discharge waste gas, rotating exhaust valve (20) to 360 ° of omnidistance seal actions of relief opening through outlet pipe (40); Also for other cylinder operation and other working stroke of this cylinder provide technical support, one is sealed and matched with rotating exhaust valve (20), in establish oil leab; Sealing surface is worn the conjuncted valve gap of aluminum alloy (21) of short comb shape radiating fin through adiabatic wearing course coating, shell, with two rotating exhaust valves (20) overall package in lid.Auxiliary system provides power by bent axle (22), comprising: adopt high pressure common rail electric-controlled diesel oil in-cylinder direct injection to join the fuel supply system of delay period empty chamber (no capsule) the two-way multiple orifice nozzle of short nothing (25); The lubrication system that adopts oil pump, pressure adjusting oil duct, spray, infiltration to combine; Because motor is worked under adiabatic state, the automatically controlled forced air cooling radiation fin of oil hydraulic motor double fan natural ventilation cooling system is adopted in cooling, and electrical equipment adopts sensing detection, levelling, electronics executive component and ECU to carry out supporting; Be the comprehensive ancillary technique guarantee of motor.

In above-mentioned development, with the vacant stroke that utilizes the cancellation piston skirt, be used for shortening the motor width and alleviate engine quality, whole process is implemented the correlation technique measure parts and structure is carried out synchronous supporting improvement; Shorten the motor integral width, alleviate quality and overcome the beneficial effect that structural imperfection utilizes structural change to bring and reach, rationally utilize, make exhaust gas recirculation participate in burning, thereby reduce discharge of harmful gases.

Claims (5)

1. belonging to improvement, the especially improvement of its connecting rod of field of internal combustion engine two-stroke flat opposed twin-spool engine, is to be the basis with the existing technology; Both: Ceramic piston connection rod set 10 flat opposeds of two band firing chambers move in opposite directions in the same cylinder; The kinetic energy that the fuel combustion work done produces is by 1 two-way accepting of piston head;---the dynamic transfer system of dividing locular wall assembly 16---annular slip crank assembly 11---bent axles 22 and device to constitute through dividing the piston rod group 10 of side assembling at bent axle 22 terminal five teeth interlock secondary, three output shafts 38; Transform in transmission, the Unified Set, press the polynary output of different load hierarchical arrangement; The admission gear of gas distribution system is that the common pumping action with two pistons is the center; The branch side disposes the effective coordinated between each parts such as intake duct and the helical intake 13 of gas cylinder 27, air chamber air inlet/outlet and leaf valve 18, combination gas port 39, charged control air throttle in pairs, accomplishes this machine and adopts each operating mode of lean burn technology 15: 1～19: 1 still to the supply of the required a large amount of air of 22: 1 air fuel ratios; Exhaust gear be by bent axle 22 drive, with its synchronous constant speed operation, by multiple tracks bearing 29 supports, side by side parallel be suspended at cylinder block 14 lower middle position, cylinder exhaust port inlay on the ceramic air-exhaust seat ring 19, and cylinder rectangular, have and stride two of 105 ° of crank angles, long strip exhaust gas inlet 30 and be listed as ceramic rotating exhaust valve 20; Relief opening and exhaust valve seat insert 19 are controlled by port timing 360 ° of omnidistance sealings, unlatchings; Add and coaxially be connected on constant speed synchronous operation, streamline impeller and shell on the rotating exhaust valve 20 terminal beads and become that one, waste gas outlet and air vent seat are joined 31 bearings, seal ring, the drainage pressurization of the driven shaft streaming air-discharging and supercharging device 31 that is tightly connected movingly with it; Under adiabatic state, through outwards effectively exhaust rapidly of outlet pipe 40; Outside have short comb shape radiating fin, in establish oil leab circular arc, in be sealed and matched face through the conjuncted valve gap 21 of the aluminum alloy of heat insulation layer coating, with two row rotating exhaust valves, 20 integrally closeds in lid; The auxiliary system of this machine comprises: high pressure common rail electric-controlled diesel oil in-cylinder direct injection is joined the two-way multiple orifice nozzle 25 in the empty chamber (no capsule) of the short nothing of delay period; Lubricated oil pump, pressure oil duct, spray, the comprehensive lubricating system of infiltration of adopting; The double fan forced air cooling radiation fin natural ventilation type of cooling is adopted in cooling; Electric system adopts sensing, detection, adjusting control, electronics executive component and ECU to add traditional electrical equipment coupling; The additional device of above-mentioned supporting application provides the overall technique guarantee for this machine; It is characterized in that: piston 1 top end have upper mark 8, the shallow nebula of configuration firing chamber 9, inner chamber along interior circle by several angle be provided with supporting rib 4, be furnished with locating stud 26, opening wrong 180 ° Ceramic piston connection rod set 10 and the endless belt 3 on the second road compression ring, 2 lower edges of the trapezoidal bucket of twice pottery face compression ring 2 mutually; Whole establish with front end that the connecting part extends out the edge, middle and lower part straight line motion friction surface is cast as one through the circular connecting rod 5 of hollow that plating molybdenum wearing course is handled, tail end connecting rod seat 12 mating faces are set plane 7, tightening screw 6 is established in core hole, rear end, cancelled the no skirt Ceramic piston connection rod set 10 in the skirt section under the second road compression ring, 2 lower edges and constitute; Its end penetrates crankcase 24 and assembles from the rear end fastening locking with connecting rod base 12 interference of annular slip crank 11 front ends from minute locular wall assembly 16 bearing holes; Then the annular slip crank assembly 11 and the rod journal 17 that connect equipped slide block; Form connecting rod; Again it with as the supporting application of existing technology, be fitted in two five teeth interlocks secondary, three output shafts, 38 driving mechanisms on bent axle 22 beads and link to each other the dynamic transfer system of formation two-stroke flat opposed twin-spool engine.

2. like the improvement of specification and the described two-stroke flat opposed of claim 1 twin-spool engine, it is characterized in that: cancel the skirt section, use circular connecting rod 5 of hollow and shallow nebula firing chamber 9 instead, Ceramic piston connection rod set 10 total qualities are alleviated about 1/3rd.

3. the improvement of two-stroke flat opposed twin-spool engine as claimed in claim 1; It is characterized in that: when two piston head 1 set shallow nebula firing chambers 9 run to top dead center; The nebula firing chamber that combines has and better organizes the abundant mixed of air fuel, lighter weight; Be more suitable for and circular connecting rod 5 top structure assembly casting; The set upper mark 8 of upper end face is that side two hole faces are big, lighter weight is configured in upper-lower position, and reduces the center of gravity of piston rod group 10, reduces the eccentric wear of cylinder and piston ring 2.

4. the improvement of two-stroke flat opposed twin-spool engine as claimed in claim 1 is characterized in that: adopt the circular connecting rod 5 of hollow and straight line motion stroke friction surface is plated the molybdenum wearing course handle, in its terminal and connecting rod base 12 interference fit by the advantage of the fastening assembly structure of rear side be: quality alleviates, damageable zone reduces, antifatigue is worn and torn and the raising of tension and compression stress performance.

5. the improvement of two-stroke flat opposed twin-spool engine as claimed in claim 1; It is characterized in that: in piston rod group 10 inner chambers be that to turn over 45 ° of crank angles with upper mark 8 be basic point around the position of circular connecting rod 5 set supporting ribs 4; Being separated by 90 ° evenly distributes along circumference, and both 45 °～135 °～225 °～315 ° are provided with four supporting ribs 4 altogether.

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