CN1814992A - Piston-type IC engine of continuous variable valve timing and gas-distributing mechanism - Google Patents
Piston-type IC engine of continuous variable valve timing and gas-distributing mechanism Download PDFInfo
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- CN1814992A CN1814992A CN 200610057265 CN200610057265A CN1814992A CN 1814992 A CN1814992 A CN 1814992A CN 200610057265 CN200610057265 CN 200610057265 CN 200610057265 A CN200610057265 A CN 200610057265A CN 1814992 A CN1814992 A CN 1814992A
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Abstract
A piston type internal combustion engine with continuously variable valve timing valve mechanism features the main inlet camshaft and sub inlet camshaft simultaneously controlling air inlet air valve start-stop and start-stop duration and valve stroke through compensated bogie. Said invention not only can continuously change air valve timing to control air inlet/outlet valve start-stop time, change but also air inlet/outlet valve start-stop time duration and valve stroke, thereby further raising internal combustion engine effective power.
Description
Affiliated technical field
A kind of continously variable valve timing valve actuating mechanism piston IC engine, especially a kind of keying that continuously changes the intake and exhaust valve, the continously variable valve timing valve actuating mechanism piston IC engine of endurance and valve lift.
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 and the valve lift 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 and the valve lift 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, and can continuously change inlet and exhaust valve from being opened to the endurance and the valve lift of closing, 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 intake valve by the port timing that continuously changes main admission cam shaft and secondary admission cam shaft and open and close and open and close endurance and valve lift.
Continously variable valve timing valve actuating mechanism piston IC engine is controlled the port timing of main admission cam shaft and secondary admission cam shaft and keying and the keying endurance and the valve lift of intake valve by continuous variable timing final controlling element.
Its main structure of continously variable valve timing valve actuating mechanism piston IC engine is by body group and connecting rod, continuous variable valve keying and endurance and valve lift 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, it 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. and 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 by the body end face, water jacket, main oil gallery, the diaphragm strengthening rib, the body bottom surface, main bearing seat, diaphragm between cylinder, organism sidewall, the sidewall reinforcing rib is formed. 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 satisfy and lubricate the vertical of needs, horizontal oil duct. the outer wall at cylinder of internal-combustion engine is cast with cooling jacket and cloth hydroecium. and body should have good strength and stiffness, wear-resistant, high temperature resistant and corrosion-resistant, cylinder need carry out suitable cooling, in order to avoid body overheating deforming or damage. and 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 on it, valve guide hole, spark plug mounting hole or mounting hole of oil sprayer. 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. and 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, piston skirt, piston pin hole, the valve pit, piston head bank, piston ring land, circlip groove, piston pin boss, spill port, oil ring groove, compression, strengthening rib is formed. and 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, and connecting rob bushing, 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, balancing stand, slip goalpost; rocking arm, 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 main effect of balancing stand is the linear reciprocating motion that rotatablely moving of major-minor admission cam shaft is converted to intake valve, and the main structure of balancing stand is by matrix, end face chute, guide rail, compositions such as spherical bearing.
The main material of balancing stand should have good strength and stiffness, wear-resistant and distortion, light weight.As cast iron, materials such as high-strength wear-resistant alloy.
The setting of slip goalpost is fixed on hydraulic tappet or the rocking arm.Main effect is that the thrust with the major-minor admission cam shaft is passed to intake valve, and the main structure of slip goalpost is by matrix, compositions such as spherical bearing.
The main material of slip goalpost should have good strength and stiffness, wear-resistant and distortion, light weight.As cast iron, materials such as high-strength wear-resistant alloy.
The feature of continously variable valve timing valve actuating mechanism piston IC engine distribution device is: main admission cam shaft and secondary admission cam shaft are controlled intake valve simultaneously by balancing stand and are opened and closed and open and close endurance and valve lift.
The slip goalpost is installed on hydraulic tappet or the rocking arm, the bearing sphere contact matching of the bearing sphere of slip goalpost and balancing stand.Balancing stand can be done oscillating motion on the slip goalpost, the cam of major-minor admission cam shaft contacts with the end face chute cooperation of balancing stand and can slide in the end face chute of balancing stand.The cam of main admission cam shaft and the cam of secondary admission cam shaft respectively are arranged on the both sides of balancing stand, the sliding ball axis of a cylinder holds the bearing sphere contact matching of the center of sphere and balancing stand, the slip goalpost is subjected to the thrust from valve, and the thrust of valve is passed to the major-minor admission cam shaft by balancing stand.Make balancing stand remain contact matching with main admission cam shaft and secondary admission cam shaft.
Change the port timing of main admission cam shaft by continuous control, the control intake valve in advance or postpone opening and closing constantly.Change the port timing of secondary admission cam shaft by continuous control, the control intake valve shifts to an earlier date or postpones opening and closing constantly, 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 opening and closing moment of exhaust cam shaft control exhaust valve.The exhaust performance of internal-combustion engine to the influence of internal-combustion engine less than the air inlet performance.
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 the major-minor admission cam shaft, also can only a continuous variable valve timing final controlling element be set on main admission cam shaft, 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.
When the open phase of main admission cam shaft and secondary admission cam shaft is identical, the lift amount maximum of intake valve, to close the lasting time the shortest but be opened into.
Main admission cam shaft is open phase the most in advance, during the late release phase place of secondary admission cam shaft, and the lift amount minimum of intake valve, to close the lasting time the longest but be opened into.
During the identical open phase in advance of main admission cam shaft and secondary admission cam shaft, the lift amount maximum of intake valve, to close the lasting time the shortest but be opened into.
During the same delay open phase of main admission cam shaft and secondary admission cam shaft, the lift amount maximum of intake valve, to close the lasting time the shortest but be opened into.
Main admission cam shaft shifts to an earlier date open phase, and during the normal open phase of secondary admission cam shaft, the lift amount of intake valve is the intake valve lift amount when identical less than the open phase of main admission cam shaft and secondary admission cam shaft.But be opened into close the lasting time greater than the open phase of main admission cam shaft and secondary admission cam shaft when identical valve opening to closing the lasting time.
Main admission cam shaft postpones open phase, and during the normal open phase of secondary admission cam shaft, the lift amount of intake valve is the intake valve lift amount when identical less than the open phase of main admission cam shaft and secondary admission cam shaft.But be opened into close the lasting time greater than the open phase of main admission cam shaft and secondary admission cam shaft when identical valve opening to closing the lasting time.
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, and air filter cover, 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, can adjust main admission cam shaft open phase the most in advance, during the late release phase place of secondary admission cam shaft, the lift amount minimum of intake valve, to close the lasting time the longest but be opened into.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 main admission cam shaft and postpone open phase, during the normal open phase of secondary admission cam shaft, the lift amount of intake valve is the intake valve lift amount when identical less than the open phase of main admission cam shaft and secondary admission cam shaft.But be opened into close the lasting time greater than the open phase of main admission cam shaft and secondary admission cam shaft when identical valve opening to closing the lasting time.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 the open phase of main admission cam shaft and secondary admission cam shaft when identical, the lift amount maximum of intake valve, to close the lasting time the shortest but be opened into.Utilize gas inertia to improve charge volume efficient, improve the fuel utilization rate, reduce fuel consumption and pollutant discharge amount.
Improve rapidly at short notice under the condition of the speed of a motor vehicle, in the time of can adjusting the identical open phase in advance of main admission cam shaft and secondary admission cam shaft, the lift amount maximum of intake valve, to close the lasting time the shortest but be opened into.And reduce inlet and exhaust valve and be opened into and close the time that is continued, the quick closedown intake valve reduces the air inlet adverse current loss that the inlet valve port end is produced, and improves the fuel utilization rate, minimizing 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, and can continuously change inlet and exhaust valve from being opened to the endurance and the valve lift of closing, 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 a balancing stand vertical section structure plan view.
Fig. 2 is the plan view of balancing stand.
Fig. 3 is the longitudinal section side view of balancing stand.
Fig. 4 is the structural front view of slip goalpost.
Fig. 5 is the structure side view of slip goalpost.
Fig. 6 is the structure plan view of slip goalpost.
Fig. 7 is a first embodiment of the invention.
Fig. 8 is a second embodiment of the invention.
Fig. 9 is a structure partial plan view of the present invention.
Figure 10 is a structure of the present invention longitudinal section plan view.
Figure 11 is a structure of the present invention longitudinal section plan view.
Figure 12 is a structure of the present invention longitudinal section side view.
Among the figure, 1 balancing stand spherical bearing, 2 balancing stand matrixes, 3 balancing stand end face chutes, 4 balancing stand guide rails, 5 slip goalpost spherical bearings, 6 sliding ball base for post bodies, 7 hydraulic tappets, 8 continuous variable valve timing final controlling element, 9 main admission cam shafts, 10 slip goalpost, 11 secondary admission cam shafts, 12 balancing stands, 13 rocking arms, 14 valve guide bushings, 15 intake valves, 16 valve spring, 17 cylinder head, 18 exhaust passages, 19 exhaust valves, 20 exhaust valve seats, 21 suction valve cones, 22 gas-entered passageways, 23 exhaust cam shaft continuous variable valve timing final controlling element, 24 spark plugs, 25 outlet pipes, 26 wrist pins, 27 coolant pumps, 28 lubricating pumps, 29 lubricating oil purifiers, 30 oil sumps, 31 bodies, 32 bent axles, 33 starter motors, 34 connecting rods, 35 suction tude, 36 fuel oils oil rail, 37 fuel injection devices, 38 valve mechanism cover, 39 exhaust cam shafts, 40 pistons, 41 flywheels, 42 flute profile bands, 43 camshaft gear wheels, 44 auxiliary cam axle continuous variable valve timing final controlling element, 45 flute profile belt wheels.
Embodiment
Among Fig. 7, by hydraulic tappet (7), continuous variable valve timing final controlling element (8), main admission cam shaft (9), slip goalpost (10), secondary admission cam shaft (11), balancing stand (12), the fundamental composition structure of the distribution device movement parts that valve guide bushing (14) and intake valve (15) are formed.
Among Fig. 8, by hydraulic tappet (7), continuous variable valve timing final controlling element (8), main admission cam shaft (9), slip goalpost (10), secondary admission cam shaft (11), balancing stand (12); rocking arm (13), the fundamental composition structure of the rocking arm distribution device movement parts that valve guide bushing (14) and intake valve (15) are formed.
Claims (2)
1 one kinds of continously variable valve timing valve actuating mechanism piston IC engines is characterized in that: main admission cam shaft and secondary admission cam shaft are controlled intake valve simultaneously by balancing stand and are opened and closed and open and close endurance and valve lift.
2 according to the continously variable valve timing valve actuating mechanism piston IC engine described in the claim 1, it is characterized in that: the balancing stand of continously variable valve timing valve actuating mechanism piston IC engine distribution device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610057265 CN1814992A (en) | 2006-03-10 | 2006-03-10 | Piston-type IC engine of continuous variable valve timing and gas-distributing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610057265 CN1814992A (en) | 2006-03-10 | 2006-03-10 | Piston-type IC engine of continuous variable valve timing and gas-distributing mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN1814992A true CN1814992A (en) | 2006-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610057265 Pending CN1814992A (en) | 2006-03-10 | 2006-03-10 | Piston-type IC engine of continuous variable valve timing and gas-distributing mechanism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852582A (en) * | 2012-09-06 | 2013-01-02 | 浙江吉利汽车研究院有限公司杭州分公司 | Variable valve timing method |
| CN101571062B (en) * | 2008-04-30 | 2013-06-05 | 现代自动车株式会社 | Continuous variable valve lift apparatus |
| CN103256117A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Gasoline engine with deviated crankshaft |
| CN103256138A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Cylinder cover assembly of gasoline engine |
| CN106545373A (en) * | 2015-09-21 | 2017-03-29 | 现代自动车株式会社 | The system and method for the valve timing of control CVVD electromotors |
-
2006
- 2006-03-10 CN CN 200610057265 patent/CN1814992A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571062B (en) * | 2008-04-30 | 2013-06-05 | 现代自动车株式会社 | Continuous variable valve lift apparatus |
| CN102852582A (en) * | 2012-09-06 | 2013-01-02 | 浙江吉利汽车研究院有限公司杭州分公司 | Variable valve timing method |
| CN102852582B (en) * | 2012-09-06 | 2016-03-02 | 浙江吉利汽车研究院有限公司杭州分公司 | Variable Valve Time method |
| CN103256117A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Gasoline engine with deviated crankshaft |
| CN103256138A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Cylinder cover assembly of gasoline engine |
| CN103256117B (en) * | 2013-04-28 | 2016-11-09 | 重庆小康工业集团股份有限公司 | Offset crankshaft petrol engine |
| CN103256138B (en) * | 2013-04-28 | 2017-09-26 | 重庆小康工业集团股份有限公司 | Gasoline engine cylinder head assembly |
| CN106545373A (en) * | 2015-09-21 | 2017-03-29 | 现代自动车株式会社 | The system and method for the valve timing of control CVVD electromotors |
| CN106545373B (en) * | 2015-09-21 | 2020-06-30 | 现代自动车株式会社 | System and method for controlling valve timing of CVVD engine |
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