CN1831304A - Continously variable valve timing valve actuating mechanism piston IC engine - Google Patents
Continously variable valve timing valve actuating mechanism piston IC engine Download PDFInfo
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- CN1831304A CN1831304A CNA2006100572665A CN200610057266A CN1831304A CN 1831304 A CN1831304 A CN 1831304A CN A2006100572665 A CNA2006100572665 A CN A2006100572665A CN 200610057266 A CN200610057266 A CN 200610057266A CN 1831304 A CN1831304 A CN 1831304A
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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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention is a piston internal-combustion engine with continuously variable valve timing mechanism, characterized by that: it adopts a structure of main and auxiliary gas inlet and outlet cam shafts, where each cam shaft can control corresponding gas inlet and outlet valves, the main cam shaft controls ON/OFF of main gas inlet and outlet valves, and the auxiliary one controls ON/OFF of auxiliary gas inlet and outlet valves. And it can control ON/OFF time and ON-to-OFF time of the gas inlet and outlet valves by continuously varying valve timing of the gas inlet and outlet cam shafts, thus further improving effective power and thermal efficiency of internal-combustion engine and reducing fuel oil consumption and pollutant discharge.
Description
Affiliated technical field
A kind of continously variable valve timing valve actuating mechanism piston IC engine, especially a kind of by continuously changing the phase place of intake and exhaust cam axle, control the keying of intake and exhaust valve and the continously variable valve timing valve actuating mechanism piston IC engine of endurance.
Background technique
At present, its CVTC of known internal-combustion piston engine can only be controlled the opening and closing time of inlet and exhaust valve by the port timing that changes the inlet and exhaust valve camshaft, can not control inlet and exhaust valve from being opened to the endurance of closing.Thereby limited the useful horsepower and the thermal efficiency that further improve internal-combustion engine by the continuous variable valve timing system, reduced the lifting of fuel consume and pollutant emission performance.
Summary of the invention
Its CVTC of internal-combustion piston engine can only change the opening and closing time that the air gate distribution phase place is controlled inlet and exhaust valve by valve camshaft at present, and can not control inlet and exhaust valve from being opened to the endurance of closing.The invention provides a kind of continously variable valve timing valve actuating mechanism piston IC engine, not only can continuously change the opening and closing time that the air gate distribution phase place is controlled inlet and exhaust valve by the inlet and exhaust valve camshaft, and continuously change inlet and exhaust valve from being opened to the endurance of closing by the inlet and exhaust valve camshaft, thereby further promote the useful horsepower and the thermal efficiency of internal-combustion engine, reduce fuel consume and pollutant emission.
The present invention solves the scheme that its technical problem takes: control the keying of main intake and exhaust valve and secondary intake and exhaust valve and open and close the endurance by the port timing that continuously changes main camshaft and auxiliary cam axle.
Continously variable valve timing valve actuating mechanism piston IC engine is by the port timing of a main camshaft of continuous variable timing final controlling element control and the keying of main intake valve and main exhaust valve, by the port timing of an auxiliary cam axle of continuous variable timing actuator control and the keying of secondary exhaust valve and secondary intake valve.
Its main structure of continously variable valve timing valve actuating mechanism piston IC engine is by body group and connecting rod, continuous variable valve opens and closes and endurance timing distribution device, oil-fired system, air inlet system and exhaust system and Exhaust gas purifying device, cooling system, lubrication system, pressurization system, start-up system is formed.
The body group of continously variable valve timing valve actuating mechanism piston IC engine is mainly by body, cylinder head, valve mechanism cover, cylinder liner, compositions such as main bearing cap and oil sump.
The body group is the support of internal-combustion engine, is connecting rod, the assembling matrix of each system's main parts size of internal-combustion engines such as distribution device.Cylinder head is used for the closed cylinder top, and forms the firing chamber with piston head, cylinder cap bottom and cylinder wall.Water channel in cylinder head and the body and oil duct and oil sump are respectively again the constituent elements of cooling system and lubrication system.
Body is the continuous casting body of cylinder block and crankcase, mainly is made up of diaphragm, organism sidewall, sidewall reinforcing rib between body end face, water jacket, main oil gallery, diaphragm strengthening rib, body bottom surface, main bearing seat, cylinder.On the inner and outer surface of organism sidewall and front and rear wall and the diaphragm between cylinder, strengthening rib is arranged all, guarantee that body has enough strength and stiffness, on diaphragm between the front and rear wall of body and cylinder, be cast with the main bearing seat or the main bearing seat hole of spring bearing, and the longitudinal and transverse oil duct that satisfies lubricated needs.Outer wall at cylinder of internal-combustion engine is cast with cooling jacket and cloth hydroecium.Body should have good strength and stiffness, and is wear-resistant, high temperature resistant and corrosion-resistant, and cylinder need carry out suitable cooling, in order to avoid body overheating deforming or damage.The material of body is cast iron or aluminum alloy material.
Continously variable valve timing valve actuating mechanism piston IC engine cylinder spread pattern has in-line arrangement, v type and flat opposed formula.
The material of cylinder head is by high-quality gray cast iron, alloy cast iron or aluminium alloy casting, and its material has good strength and stiffness, and is high temperature resistant and corrosion-resistant,
Cylinder head be configured to the box part, integrated type is arranged, the structural type of blocking type and monomer-type.Be processed with inlet and outlet gate seat hole, valve guide hole, spark plug mounting hole or mounting hole of oil sprayer on it.In cylinder head, also be cast with water jacket, intake and exhaust port, the part of oil leab and firing chamber or firing chamber.
Oil sump is used to store lubricant oil and sealing body float chamber, forms with sheet metal punching press or aluminum alloy casting system.It mainly is made up of oil sump, sealing gasket, seal ring, oil discharge screw.
The composition of connecting rod is by crankshaft timing gear, following thrust plate, balancer weight, bent axle, locating stud, flywheel, bolt of flywheel, transmission bearing, back-up ring, last thrust plate, last compression ring, lower air ring, oil ring, piston, wrist pin, connecting-rod bolts, connecting rod shank, connecting rod cap, connecting rod bearing, connecting rod nut is formed.
Connecting rod is divided into piston set, three big part groups of connection rod set and crankshaft-flywheel group.
Piston set is by piston, compression ring, and the oil ring wrist pin is formed.
The piston main structure is a piston head, piston crown, and the piston skirt, piston pin hole, the valve pit, the piston head bank, piston ring land, circlip groove, piston pin boss, spill port, oil ring groove, compression, strengthening rib is formed.Its material is corrosion-and high-temp-resistant and aluminum alloy, cast iron or the refractory steel with good strength and stiffness.
Connection rod set comprises connecting rod shank, connecting rod cap, parts such as connecting-rod bolts and connecting rod bearing.Its main structure is by connecting rod shank, connecting rob bushing, and the connecting rod bearing top bearing shell, the connecting rod bearing lower bearing, connecting rod cap, nut, connecting-rod bolts, oil collecting hole, nozzle opening is formed.
The material of connecting rod shank and connecting rod cap is formed by middle-carbon steel, medium carbon alloy steel or alloy fiber reinforced aluminum die forging or roll forging.
The crankshaft-flywheel group comprises bent axle, the front end and back end sealing of bent axle, crankshaft tortional vibration damper, flywheel, parts such as crankshaft main bearing and balanced controls.
The main structure of bent axle is by crankshaft front end, main journal, and crankweb, crank pin, balancer weight, crankshaft rear end, the unit crank throw is formed.
Valve distribution mechanism is made up of valve group and valve transmission group two large divisions, mainly comprises camshaft, the camshaft driving gear, transmission flute profile band, hydraulic tappet, cotter seat, valve oil seal, valve collet, valve spring, valve guide bushing, valve, air valve seat ring, parts such as continuous variable valve timing final controlling element.
The feature of continously variable valve timing valve actuating mechanism piston IC engine distribution device is: the structure that adopts major-minor intake and exhaust cam axle, every main camshaft or auxiliary cam axle can both be controlled corresponding with it intake valve and exhaust valve, the opening and closing of main camshaft control primary intake valve and main exhaust valve, the auxiliary cam axle is controlled the opening and closing of secondary intake valve and secondary exhaust valve.
By the port timing of continuous control change main camshaft, the opening and closing of control primary intake valve constantly.Change the port timing of auxiliary cam axle by continuous control, control the opening and closing moment of secondary intake valve, the moment that reaches the opening and closing of continuous control intake valve is that intake valve opens and closes timing, be carved into the time that the close moment of secondary intake valve continues during unlatching by the control primary intake valve, controlling the endurance that being opened into of intake valve close is that IO Intake Valve Opens is to closing the endurance valve timing.
By the port timing of continuous control change main camshaft, the opening and closing of control main exhaust valve constantly.Change the port timing of auxiliary cam axle by continuous control, control the opening and closing moment of secondary exhaust valve, the moment that reaches the opening and closing of continuous control exhaust valve is that exhaust valve opens and closes timing, be carved into the time that the close moment of secondary exhaust valve continues during unlatching by the control main exhaust valve, controlling the endurance that being opened into of exhaust valve close is that exhauxt valve opens is to closing the endurance valve timing.
Adopt the air gate distribution form of major-minor camshaft, make main intake valve and main exhaust valve be arranged on a side of cylinder head, main suction tude and main exhaust are in the same side of internal-combustion engine, secondary intake valve and secondary exhaust valve are at the opposite side of cylinder head, secondary suction tude and secondary outlet pipe are at the opposite side of internal-combustion engine, and the setting type of this intake and exhaust valve can increase the diameter of intake valve to greatest extent.
Main intake valve and secondary intake valve be corresponding the setting in the cylinder head both sides, in the intake stroke process, main intake valve and secondary intake valve are opened, the both sides air inlet of correspondence in the firing chamber with producing strong air inlet sinking rotating vortex, not only can obtain sufficient air inlet effect, and can make air or inflammable mixture in cylinder and the firing chamber produce strong rotating vortex, make inflammable mixture more even, it is rapider to burn, and reduces pumping loss.
Main exhaust valve and secondary exhaust valve be corresponding the setting in the cylinder head both sides, in the exhaust stroke process, main exhaust valve and secondary exhaust valve are opened, the both sides exhaust of correspondence in the firing chamber, with producing strong exhaust rising rotating vortex, not only can obtain sufficient exhaust effect, and can make the expense gas in cylinder, firing chamber and the outlet pipe produce strong rotating vortex, cylinder and burning indoor exhaust are more totally removed at the end, and exhaust is rapider.
The continously variable valve timing valve actuating mechanism piston IC engine distribution device can respectively be provided with a continuous variable valve timing final controlling element on major-minor intake and exhaust cam axle, also can only a continuous variable valve timing final controlling element be set on main intake and exhaust cam axle or secondary intake and exhaust cam axle, continuous variable valve timing final controlling element can be selected continuous variable valve timing final controlling element such as helical spline formula, blade type for use.
Its oil-fired system fuel injection mode of continously variable valve timing valve actuating mechanism piston IC engine can be selected, suction tude gasoline injection mode, multiple fuel injection modes such as in-cylinder direct injection gasoline injection mode.
When adopting gasoline to be the fuel air pipe inspection, the oil-fired system of continously variable valve timing valve actuating mechanism piston IC engine comprises petrol tank, electric fuel pump, gasoline filter, fuel dispensing tube, oil pressure regulator, the hydro pulse buffer, ECU (Electrical Control Unit), spark coil, distributor, spark plug, oil sprayer, cold start injector, idle adjusting screw, closure and throttle position sensor, lambda sensor, crankshaft position sensor, the engine temperature sensor, thermo-time switch, compensating air valve, idling mixed gas adjusting screw, Air flow meter, intake air temperature sensor, engine speed sensor, storage battery, ignition switch, main relay, electric fuel pump relay.
Gas handling system mainly comprises air-strainer and intake manifold.Air-strainer is by the air inlet honeycomb duct, air filter cover, and air cleaner casing and filter core are formed.
Vent systems is mainly by gas exhaust manifold, front exhaust pipe, catalyst, exhaust gas temperature sensor, lambda sensor, particulate filter, silencing apparatus, final vacuum pipe, the part of tailpipe.
The cooling system of continously variable valve timing valve actuating mechanism piston IC engine mainly comprises radiator, radiator pressure cap, compensation bucket, radiator outlet hoese, fan belt, warm-air drier delivery hose, pipe collar, the warm braw movement, warm-air drier water supply hose, thermostat, water pump, cooling fan protects solar or lunar halo, parts such as hose, radiator inlet.
The continously variable valve timing valve actuating mechanism piston IC engine lubrication system is by lubricating pump, lubricating oil purifier, lube oil cooler, fuel filter, lubricant pressure sensor, compositions such as temperature transducer and lubricating pipe, mainly comprise seal washer, distributor shaft, jack shaft curve gear, the distributor shaft driven gear, locating stud, lubricating pump driving shaft lining, positioning pin hole, lubricating pump driving shaft, setting sleeve, the lubricant oil pump housing, lubricating oil pump driven gear, lubricating oil pump driving gear, driven gear shaft, liner, oil inlet pipe, support, fuel filter, seal ring, lubricating oil pump cover, parts such as bolt.
When continously variable valve timing valve actuating mechanism piston IC engine was fuel with gasoline, its ignition system adopted the computer ignition system system.
The start-up system of continously variable valve timing valve actuating mechanism piston IC engine is by direct current motor, driving mechanism, and control mechanism is formed.
The various running operating modes of continously variable valve timing valve actuating mechanism piston IC engine require as described below to the intake and exhaust valve timing.
When idle custom and little load, because of internal-combustion engine self, lubricant oil, cooling liquid, the temperature of inflammable mixture is lower, and rotating speed is lower when starting, and can adjust major-minor inlet and exhaust valve camshaft inlet and exhaust valve and postpone opening and closing constantly, and shorten inlet and exhaust valve and be opened into and close the time that is continued, make inlet and exhaust valve that the crossover angle not take place, prevent the exhaust side back flow of gas, stablize idling mode, improve the fuel utilization rate, reduce fuel consumption and pollutant discharge amount.
When moderate duty, the internal-combustion engine most of the time is in the moderate duty time service, for guaranteeing that internal-combustion engine has fuel economy preferably, can adjust major-minor inlet and exhaust valve camshaft inlet and exhaust valve and shift to an earlier date opening and closing constantly, and increase inlet and exhaust valve and be opened into and close the time that is continued, make inlet and exhaust valve generation crossover angle, make exhaust side gas reenter cylinder interior, improve the fuel utilization rate, reduce fuel consumption and pollutant discharge amount.
When big load or full load, internal-combustion engine need send peak output and overcome bigger extraneous resistance or give it the gun, can adjust major-minor inlet and exhaust valve camshaft and postpone the inlet and exhaust valve opening and closing constantly, and increase inlet and exhaust valve and be opened into and close the time that is continued, utilize gas inertia to improve charge volume efficient, improve the fuel utilization rate, reduce fuel consumption and pollutant discharge amount.
Improve under the condition of the speed of a motor vehicle at short notice rapidly, major-minor inlet and exhaust valve camshaft be can adjust and IO Intake Valve Opens and close moment shifted to an earlier date, and reduce inlet and exhaust valve and be opened into and close the time that is continued, the quick closedown intake valve, reduce the air inlet adverse current loss that the inlet valve port end is produced, improve the fuel utilization rate, reduce fuel consumption and pollutant discharge amount.
The invention has the beneficial effects as follows; Continously variable valve timing valve actuating mechanism piston IC engine, not only can continuously change the opening and closing time that the air gate distribution phase place is controlled inlet and exhaust valve by the inlet and exhaust valve camshaft, and continuously change inlet and exhaust valve from being opened to the endurance of closing by the inlet and exhaust valve camshaft, thereby further promote the useful horsepower and the thermal efficiency of internal-combustion engine, reduce fuel consume and pollutant emission.
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is local vertical section structure figure of the present invention.
Fig. 2 is local vertical section structure figure of the present invention
Fig. 3 is a vertical section structure plan view of the present invention.
Fig. 4 is a vertical section structure side view of the present invention.
Fig. 5 is embodiments of the invention.
Among the figure, 1 main intake and exhaust cam axle, 2 main intake and exhaust cam axle continuous variable valve timing final controlling element, 3 hydraulic tappets, 4 main intake valves, 5 cylinder head, 6 valve spring, 7 valve guide bushings, 8 main gas-entered passageways, 9 intake valve seat rings, 10 exhaust valve seat rings, 11 secondary gas-entered passageways, 12 secondary intake valves, 13 secondary intake and exhaust cam axles, 14 secondary intake and exhaust cam axle continuous variable valve timing final controlling element, 15 secondary exhaust valves, 16 main exhaust valves, 17 main exhaust passageway, 18 fuel injection devices, 19 fuel oils oil rail, 20 valve mechanism cover, 21 spark plugs, 22 intake manifold, 23 wrist pins, 24 pistons, 25 gas exhaust manifolds, 26 bodies, 27 coolant pumps, 28 bent axles, 29 lubricating pumps, 30 lubricating oil purifiers, 31 oil sumps, 32 starter motors, 33 connecting rods, 34 secondary exhaust passages, 35 camshaft gear wheels, 36 flute profile belt wheels, 37 flute profile bands, 38 flywheels.39 mounting holes, 40 firing chambers, 41 oil leabs, 42 cooling fluid passages.
Embodiment
In Fig. 5, the mounting hole (39) on cylinder head (5) bottom surface, oil leab (41), cooling fluid passage (42), main intake valve (4) in firing chamber (40) and firing chamber (40), secondary intake valve (12), main exhaust valve (16) and secondary exhaust valve (15) and spark plug (21).
Claims (4)
1 one kinds of continously variable valve timing valve actuating mechanism piston IC engines, it is characterized in that: the structure that adopts major-minor intake and exhaust cam axle, every camshaft can both be controlled corresponding with it intake valve and exhaust valve, main camshaft is controlled the opening and closing of main intake valve and main exhaust valve, and the auxiliary cam axle is controlled the opening and closing of secondary intake valve and secondary exhaust valve.
2 according to claim 1 described continously variable valve timing valve actuating mechanism piston IC engine, it is characterized in that: keying and the keying endurance of controlling main intake and exhaust valve and secondary intake and exhaust valve by the port timing that continuously changes main camshaft and auxiliary cam axle respectively.
3 according to claim 1 described continously variable valve timing valve actuating mechanism piston IC engine, it is characterized in that: its main structure of continously variable valve timing valve actuating mechanism piston IC engine is by body group and connecting rod, continuous variable valve opens and closes and endurance timing distribution device, oil-fired system, air inlet system and exhaust system and Exhaust gas purifying device, cooling system, lubrication system, pressurization system, start-up system is formed.
4 according to claim 1 described continously variable valve timing valve actuating mechanism piston IC engine, it is characterized in that: the form that adopts major-minor intake and exhaust cam axle, make main intake valve and main exhaust valve be arranged on a side of cylinder head, main suction tude and main exhaust are in the same side of internal-combustion engine, secondary intake valve and secondary exhaust valve are at the opposite side of cylinder head, and secondary suction tude and secondary outlet pipe are at the opposite side of internal-combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100572665A CN1831304A (en) | 2006-03-10 | 2006-03-10 | Continously variable valve timing valve actuating mechanism piston IC engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100572665A CN1831304A (en) | 2006-03-10 | 2006-03-10 | Continously variable valve timing valve actuating mechanism piston IC engine |
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| CN1831304A true CN1831304A (en) | 2006-09-13 |
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| CNA2006100572665A Pending CN1831304A (en) | 2006-03-10 | 2006-03-10 | Continously variable valve timing valve actuating mechanism piston IC engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499457A (en) * | 2015-09-03 | 2017-03-15 | 现代自动车株式会社 | The method of control CVVT |
| CN109424475A (en) * | 2017-08-24 | 2019-03-05 | 马自达汽车株式会社 | Vehicle drive-train unit |
-
2006
- 2006-03-10 CN CNA2006100572665A patent/CN1831304A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499457A (en) * | 2015-09-03 | 2017-03-15 | 现代自动车株式会社 | The method of control CVVT |
| CN106499457B (en) * | 2015-09-03 | 2020-08-07 | 现代自动车株式会社 | Method of controlling CVVT |
| CN109424475A (en) * | 2017-08-24 | 2019-03-05 | 马自达汽车株式会社 | Vehicle drive-train unit |
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