CN202900501U - Gasoline direct injection fuel injection pump - Google Patents
Gasoline direct injection fuel injection pump Download PDFInfo
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- CN202900501U CN202900501U CN 201220458974 CN201220458974U CN202900501U CN 202900501 U CN202900501 U CN 202900501U CN 201220458974 CN201220458974 CN 201220458974 CN 201220458974 U CN201220458974 U CN 201220458974U CN 202900501 U CN202900501 U CN 202900501U
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Abstract
The utility model discloses a gasoline direct injection fuel injection pump. The gasoline direct injection fuel injection pump is directly installed on an engine cylinder head and comprises a pump body, a pressure stabilizing component, a fuel inlet valve component, an electromagnetic driving component, a plunger valve component, a fuel outlet valve component, a fuel drain valve component and a fuel outlet connecting sleeve, wherein the pressure stabilizing component is installed on the pump body, and the fuel outlet connecting sleeve is hollow inside and is connected with a high-pressure fuel supply rail. According to the gasoline direct injection fuel injection pump, an air inlet camshaft is used for driving a plunger in the plunger valve component, thus, compared with outside jet engines, the pump has the advantages that the friction force and the chain force are reduced, an engine can operate quietly, and fuel is saved. The fuel injection pump provides the fuel which is stored in the high-pressure rail, the fuel is transferred to a fuel injector through the high-pressure rail, and fuel injection quantity parameters of the fuel injector are used for accurately controlling the injection quantity of the fuel of the fuel injection pump through sending of electric signals by an electronic control unit (ECU). The fuel injector controls the injection quantity of the fuel accurately through electrons according to the air intake volume, the fuel and the air are fully atomized and mixed, a combustion chamber is uniformly filled with gas mixtures which conform to a theoretical air-fuel ratio, and every drop of fuel is used fully.
Description
Technical field
The utility model relates to a kind of petrol engine fuel injection system technical field, is specially adapted to the gasoline direct Injection Pump of gasoline direct injection engine (GDI) fuel oil supply in the cylinder.
Background technique
At present, many offshore companies such as Audi, benz, Ford, masses, daily output, Mazda, Mitsubishi, Toyota, Honda, Reynolds and research institution have all developed gasoline direct machine (GDI) product and model machine in the cylinder, there is data to show, part GDI motor, compare with traditional intake port injection (PFI), mixed gas does not need through air throttle, therefore can reduce the vapour lock that air throttle produces mixed gas, fuel economy can improve about 15%, and power output also increases about 10%.
The gasoline direct machine is in the European and Japanese use that obtains certain scale, and the U.S. also actively promotes.In China, research and development and the popularization of gasoline direct machine are in the starting stage, do not have at present the product of independent research and model machine to release, in the energy continuous rare today, possess the automobile market that the gasoline direct machine of bringing into play again stronger power when reducing power consumption will be dominated China.
The outer jet engine of traditional cylinder, its fuel oil is injected in the middle of the suction tude, oil sprayer will with valve across a segment distance, so that being injected into suction tude, gasoline have later on time enough to follow air to mix, treat that gasoline and air are after fully mix in this section space, burn in the middle of being introduced in again cylinder, for this traditional design, will certainly cause air and gasoline not to have time enough to mix, after mixing, enter simultaneously fuel consumption in the process of firing chamber, and then affect Economy, the power character of motor.
Summary of the invention
Technical problem to be solved in the utility model is for the employed injection system of the outer jet engine of existing cylinder not enough and gasoline direct Injection Pump in a kind of gasoline direct system that is applicable to the supply of gasoline direct injection engine in the cylinder (GDI) fuel oil is provided.This gasoline direct Injection Pump is directly installed on engine cylinder and covers, the driving of the post pump plug in the gasoline direct Injection Pump contacts with admission cam shaft by a rolling tappet and finishes, compare with the outer jet engine of cylinder like this and reduced frictional force and chain force, thereby make the quiet running of motor, save fuel oil.This gasoline direct Injection Pump provides fuel oil to be stored in the high pressure rail in addition, and fuel oil flows to oil sprayer by high pressure rail, and oil sprayer fuel injection quantity parameter is sent the spray amount that electrical signal is accurately controlled the Injection Pump fuel oil by ECU (Electrical Control Unit) ECU.Oil sprayer is accurately controlled the spray amount of fuel oil according to the air amount amount by electronics, and fuel oil fully atomizes with air and mixes, and makes the mixed gas that meets chemically correct fuel be full of equably the firing chamber, aims at bringing into play all potential of each fuel oil.Meanwhile, because sufficient combustion can significantly reduce unburned gas and discharge, thereby obtain lower discharging in motor, other motor can guarantee that in same time perfect combustion is more thorough on year-on-year basis, provides swift and violent power when reducing oil consumption.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of gasoline direct Injection Pump, it is directly installed on engine cylinder and covers, and comprising:
One pump housing, has an oil-feed aperture in the described pump housing, one in order to be installed into the first step hole of fuel tap parts and electromagnetic drive, one in order to install the first oil outlet of outlet valve parts, one in order to install the second oil outlet of fuel-displaced connecting sleeve, one in order to install the draining hole of oil drain valve parts, the one plunger valve opening in order to erection column plug valve parts, described the first oil outlet and first step hole are positioned at the both sides of described plunger valve opening and connect with this plunger valve opening respectively, described oil-feed aperture and described first step hole connect, described draining hole connects with described plunger valve opening on the one hand, connect with described the second oil outlet on the other hand, described the second oil outlet also connects with described the first oil outlet;
One is installed in the voltage regulation part on the described pump housing, and the oil inlet hole of this voltage regulation part is connected with engine oil tank, has a voltage stabilizing oil pocket in the described voltage regulation part, and this voltage stabilizing oil pocket is communicated with described oil-feed aperture;
One is installed in the oiling valve parts in the described first step hole, and these oiling valve parts are in order to open and close the passage between described oil-feed aperture and the described first step hole;
One is installed in the electromagnetic drive in the described first step hole, and this electromagnetic drive acts on the described oiling valve parts, drives into the fuel tap parts and opens and close, and this electromagnetic drive is subjected to the ECU unit controls;
One is installed in the plunger valve parts in the described plunger valve opening;
One is installed in the outlet valve parts in described the first oil outlet, and these outlet valve parts can open and close the passage between the first oil outlet and the second oil outlet under described plunger valve opening inner high voltage oil and self spring action;
One is installed in the oil drain valve parts in the described draining hole, opens and closes the passage between the second oil outlet and the spill port under the high pressure oil that these oil drain valve parts can be in the high-pressure oil feed track and self spring action;
One is installed in the fuel-displaced connecting sleeve in described the second oil outlet, is hollow in this fuel-displaced connecting sleeve and is connected with the high-pressure oil feed track.
In a preferred embodiment of the present utility model, described voltage regulation part comprises that one is fixed on pump body top cover and the voltage stabilizing dish on the described pump housing, form a described voltage stabilizing oil pocket between described pump body top cover and the pump housing, described voltage stabilizing dish is installed in the described voltage stabilizing oil pocket by voltage stabilizing dish trim ring and voltage stabilizing dish seat ring; Be provided with a fuel inlet fitting that is connected with described engine oil tank in described pump body top cover, be provided with described oil inlet hole in the described fuel inlet fitting, in the described oil inlet hole filter cleaner is installed.
In a preferred embodiment of the present utility model, two corrugated voltage stabilizing sheets were welded about described voltage stabilizing dish adopted, and were filled with gas medium between two corrugated voltage stabilizing sheets.
In a preferred embodiment of the present utility model, described oiling valve parts comprise the oil-feed valve seat, the oiling valve spring, oil-feed valve block and oiling valve spring seat, be provided with a valve rod hole that supplies the valve rod in the described electromagnetic drive to pass on the described oil-feed valve seat, oil-through hole radially, axial oil-through hole and oiling valve spring seat receiving cavity, described valve rod hole, axially oil-through hole and the coaxial setting of oiling valve spring seat receiving cavity, the internal diameter of wherein said axial oil-through hole is greater than the internal diameter of valve rod hole but less than the external diameter of oil-feed valve block, described radially oil-through hole is communicated with oil-feed aperture on the pump housing, and described axial oil-through hole and described radially oil-through hole and oiling valve spring seat receiving cavity connect; Described oiling valve spring seat, oiling valve spring and oil-feed valve block are installed in the described oiling valve spring seat receiving cavity, wherein the outer rim of oiling valve spring seat is connected with the inner wall sealing of described oiling valve spring seat receiving cavity, it is inboard that described oil-feed valve block is attached to described axial oil-through hole, described oiling valve spring is arranged between described oil-feed valve block and the oiling valve spring seat, the oiling valve spring is pressed in the oil-feed valve block on the described oil-feed valve seat, to seal up axial oil-through hole, offer one in the bottom surface of described oiling valve spring seat and cross oily breach, described oil-feed breach is communicated with described oiling valve spring seat receiving cavity with described plunger valve opening.
Described electromagnetic drive comprises valve body, valve rod, valve rod back-up ring, valve rod spring, valve rod spring seat, magnetic partiting ring, armature, connecting sleeve, cylinder iron core, electromagnet, electromagnet block, electromagnet snap ring, electromagnet casing, the first end of described valve body is installed in the described first step hole, the second end extends the described pump housing, is provided with a boss of accepting the valve rod spring in the neutral position of described valve rod; Described electromagnet casing is fixed on the described valve body, has an inner bore of step in the described valve body, described valve rod is slidably supported in the inner bore of step of described valve body by valve rod back-up ring, valve rod spring seat and magnetic partiting ring, described valve rod spring housing is on the described valve rod and between the boss on the described valve rod and valve rod spring seat, wherein said valve rod back-up ring is positioned at the large diameter hole of described inner bore of step, and described valve rod spring seat and magnetic partiting ring are positioned at the small diameter bore of described inner bore of step and the outside that magnetic partiting ring is positioned at described valve rod spring seat; The first end of described valve rod extends in the described first step hole and passes valve rod hole and axial oil-through hole and acting on the described oil-feed valve block in the described oil-feed valve seat, and the second end of valve rod is inserted in the described magnetic partiting ring; The second end at described valve body is connected with connecting sleeve, in described connecting sleeve, be provided with armature and be connected with the first end of described cylinder iron core, described armature is fixedly connected with the second end of described valve rod and between the end face of described magnetic partiting ring and described cylinder iron core first end, the internal diameter Spielpassung of armature outer rim and connecting sleeve leaves one between the end face of armature exterior edge face and described cylinder iron core first end simultaneously and opens valve clearance; Described electromagnet is provided with in the electromagnet casing and is centered around the periphery of described cylinder iron core; Described electromagnet block is arranged in the described electromagnet casing and the axial position of electromagnet is limited, and the second end of described cylinder iron core passes described electromagnet block and blocked by the electromagnet snap ring.
For the ease of cooling, be provided with some logical oily breach in the outer rim of described valve rod spring seat.
In a preferred embodiment of the present utility model, described outlet valve parts are an oil outlet one-way valve.
Described oil outlet one-way valve comprises delivery valve seat, fuel-displaced valve plate, oil outlet valve spring cover, oil outlet valve spring, in the described delivery valve seat oil through is arranged, the first end of this delivery valve seat is installed in described the first oil outlet, described oil outlet valve spring cover is installed on the second end of described delivery valve seat and is arranged in described the second oil outlet, cover wall at described oil outlet valve spring cover offers oil outlet, described fuel-displaced valve plate and oil outlet valve spring are arranged in the described oil outlet valve spring cover, and described oil outlet valve spring is pressed in described fuel-displaced valve plate on the aperture of oil through of described delivery valve seat.
In a preferred embodiment of the present utility model, described oil drain valve parts are a draining one-way valve.
Described draining one-way valve comprises oil drain valve spring, oil drain valve spring seat, steel ball, the draining valve seat that is installed in the described draining hole, be provided with the draining through hole in the wherein said draining valve seat, described draining through hole one end is communicated with described the second oil outlet, and the other end is communicated with described plunger valve opening by the draining hole; Described oil drain valve spring is pressed in described steel ball on the draining through hole entrance of described draining valve seat by the oil drain valve spring seat.
In a preferred embodiment of the present utility model, described plunger valve parts comprise plunger bushing, plunger, the piston spring seat of honour, lower of piston spring, plunger snap ring, outside framework oil seal, piston spring; Be installed in to described plunger bushing interference fit the bottom of described plunger valve opening, the top of described plunger is inserted in the described plunger bushing, the described piston spring seat of honour is fixed on the described pump housing, described plunger is supported on the described piston spring seat of honour by described outside framework oil seal and plunger snap ring, and the below at the described piston spring seat of honour is extended in the lower end of this plunger; Be fixed with lower of described piston spring in the lower end of described plunger, described piston spring is enclosed within on the described plunger, and the upper end of piston spring is connected with the piston spring seat of honour, and the lower end is connected with lower of piston spring.
The utility model gasoline direct Injection Pump.Drive by admission cam shaft, the driving of the plunger in the plunger valve parts contacts with camshaft by a rolling tappet and finishes, and compares with the outer jet engine of cylinder like this and has reduced frictional force and chain force, thereby make the quiet running of motor, saves fuel oil.Injection Pump provides fuel oil to be stored in the high pressure rail, and fuel oil flows to oil sprayer by high pressure rail, and oil sprayer fuel injection quantity parameter is sent the spray amount that electrical signal is accurately controlled the Injection Pump fuel oil by ECU (Electrical Control Unit) ECU.Oil sprayer is accurately controlled the spray amount of fuel oil according to the air amount amount by electronics, and fuel oil fully atomizes with air and mixes, and makes the mixed gas that meets chemically correct fuel be full of equably the firing chamber, aims at bringing into play all potential of each fuel oil.
Description of drawings
Fig. 1 is the structural representation of the utility model gasoline direct Injection Pump.
Fig. 2 is the structural representation that the utility model gasoline direct Injection Pump removes the plunger valve parts.
Fig. 3 is the structure of oiling valve parts, outlet valve parts and oil drain valve parts in the utility model gasoline direct Injection Pump and is installed in the interior schematic representation of the pump housing.
Fig. 4 is the structural representation of the plunger valve parts of the utility model gasoline direct Injection Pump.
Fig. 5 is the electromagnetic drive part-structure schematic representation of the utility model gasoline direct Injection Pump.
Fig. 6 is the structural representation of pump body top cover of the voltage regulation part of the utility model gasoline direct Injection Pump.
Fig. 7 is the structural representation of voltage stabilizing dish of the voltage regulation part of the utility model gasoline direct Injection Pump.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified, but therefore the utility model is not limited in the described scope of embodiments.
Referring to Fig. 1, the gasoline direct Injection Pump shown in the figure, it comprises a pump housing 100, the bottom of this pump housing 100 is directly installed on the engine cylinder cover (not shown) by flange 110 and O RunddichtringO 120.
Offer an axial oil-feed aperture 130 on the top of the pump housing 100, lower central offers an axial plunger valve opening 140, and the middle part offers step hole 150, oil outlet radially 160 and 170, draining hole 180 radially radially. Oil outlet 160 and 170 and step hole 150 be positioned at the both sides of plunger valve opening 140 and connect with this plunger valve opening 140 respectively, oil-feed aperture 130 connects with step hole 150, draining hole 180 connects by aperture 190 and plunger valve opening 140 tops on the one hand, connect with oil outlet 170 on the other hand, oil outlet 160 and 170 connects mutually.
One voltage regulation part 200 is installed at the top of the pump housing 100, and this voltage regulation part 200 comprises that one is fixed on the pump body top cover 210 on the pump housing 100.In conjunction with referring to Fig. 2 and Fig. 6, the center of this pump body top cover 210 is fixed with a fuel inlet fitting that is connected with engine oil tank 220, has an oil inlet hole 221 in the fuel inlet fitting 220, and filter cleaner 230 is installed in the oil inlet hole 221.
Form a voltage stabilizing oil pocket 211 between pump body top cover 210 and the pump housing 100 tops, this voltage stabilizing oil pocket 211 connects with oil inlet hole 221 and oil-feed aperture 130, by voltage stabilizing dish trim ring 240 and voltage stabilizing dish seat ring 250 a voltage stabilizing dish 260 is installed in voltage stabilizing oil pocket 211.Referring to Fig. 7, two corrugated voltage stabilizing sheets 261,262 were welded about this voltage stabilizing dish 260 adopted, and were filled with gas medium between two corrugated voltage stabilizing sheets 261,262.
Referring to Fig. 1, in the installed inside of step hole 150 oiling valve parts 300 are arranged.
Referring to Fig. 2 and Fig. 3, oiling valve parts 300 comprise oil-feed valve seat 310, oiling valve spring 320, oil-feed valve block 330 and the oiling valve spring seat 340 that is installed in the step hole 150.
Be provided with a valve rod hole 311 that supplies valve rod 420 to pass on the oil-feed valve seat 310, radially oil-through hole 312, axial oil-through hole 313 and oiling valve spring seat receiving cavity 314, valve rod hole 311, axially oil-through hole 313 and the 314 coaxial settings of oiling valve spring seat receiving cavity, axially the internal diameter of oil-through hole 313 is greater than the internal diameter of valve rod hole 311 but less than the external diameter of oil-feed valve block 330, radially oil-through hole 312 is communicated with oil-feed aperture 130 on the pump housing 100, also connect with axial oil-through hole 313 and valve rod hole 311 simultaneously, axially oil-through hole 313 is with radially oil-through hole 312 and oiling valve spring seat receiving cavity 314 connect.
Oiling valve spring seat 340, oiling valve spring 320 and oil-feed valve block 330 are installed in the oiling valve spring seat receiving cavity 314, wherein the outer rim of oiling valve spring seat 340 is connected with the inner wall sealing of oiling valve spring seat receiving cavity 314, oil-feed valve block 330 is attached to axial oil-through hole 313 inboards, oiling valve spring 320 is arranged between oil-feed valve block 330 and the oiling valve spring seat 340, oiling valve spring 320 is pressed in oil-feed valve block 330 on oil-feed valve seat 340 interior edge faces, to seal up axial oil-through hole 313.
Offer one in the bottom surface of oiling valve spring seat 340 and cross oily breach 341, oil-feed breach 341 is communicated with oiling valve spring seat receiving cavity 314 with plunger valve opening 140.
In conjunction with referring to Fig. 1, Fig. 2 and Fig. 5, an electromagnetic drive 400 is installed in step hole 150, this electromagnetic drive 400 acts on the oiling valve parts 300, drives into fuel tap parts 300 and opens and close, and this electromagnetic drive 400 is subjected to the ECU unit controls.
The inner of valve body 410 is installed in the step hole 150, and the second end extends the pump housing 100, is provided with a boss 421 of accepting the valve rod spring in the neutral position of valve rod 420.
Has an inner bore of step 411 in the valve body 410, valve rod 420 is slidably supported in the inner bore of step 411 of valve body 410 by valve rod back-up ring 430, valve rod spring seat 450 and magnetic partiting ring 460, valve rod spring 440 is enclosed within on the valve rod 420 and between the boss 421 and valve rod spring seat 450 on the valve rod 420, wherein valve rod back-up ring 430 is positioned at the large diameter hole 411a of inner bore of step 411, and valve rod spring seat 450 and magnetic partiting ring 460 are positioned at the small diameter bore 411b of inner bore of step 411 and the outside that magnetic partiting ring 460 is positioned at valve rod spring seat 450.
The inner of valve rod 420 extends into step hole 150 valve rod holes 311 interior and that pass in the oil-feed valve seat 310 and acts on the oil-feed valve block 330 with axial oil-through hole 313, and the outer end of valve rod 420 is inserted in the magnetic partiting ring 460.
Be connected with connecting sleeve 480 in the outer end of valve body 410, in connecting sleeve 480, be provided with armature 470, connecting sleeve 480 also is connected with the inner of cylinder iron core 490, armature 470 is fixedly connected with the outer end of valve rod 420 and between the end face of magnetic partiting ring 460 and cylinder iron core 490 the inners, the internal diameter Spielpassung of the outer rim of armature 470 and connecting sleeve 480 leaves one between the end face of armature 470 exterior edge faces and cylinder iron core 490 the inners simultaneously and opens valve clearance.
Referring to Fig. 1 and Fig. 2, outlet valve parts are installed in oil outlet 160, the outlet valve parts are a unidirectional outlet valve 500.
Referring to Fig. 3, oil outlet one-way valve 500 comprises delivery valve seat 510, fuel-displaced valve plate 520, oil outlet valve spring 530, oil outlet valve spring cover 540, oil through 511 is arranged in the delivery valve seat 510, the inner of this delivery valve seat 510 is installed in the oil outlet 160, and oil outlet valve spring cover 540 is installed on the outer end of delivery valve seat 510 and is arranged in oil outlet 170.Cover wall at oil outlet valve spring cover 540 offers oil outlet 541, and fuel-displaced valve plate 520 and oil outlet valve spring 530 are arranged in the oil outlet valve spring cover 540, and oil outlet valve spring 530 is pressed in fuel-displaced valve plate 520 on the aperture of oil through 511 of delivery valve seat 510.
Referring to Fig. 1, Fig. 2 and Fig. 3, oil drain valve parts are installed in draining hole 180, the oil drain valve parts are a draining one-way valve 600.
Draining one-way valve 600 comprises oil drain valve spring 610, oil drain valve spring seat 620, steel ball 630, the draining valve seat 640 that is installed in the draining hole 180.Be provided with draining through hole 641 in the draining valve seat 640, draining through hole 641 1 ends are communicated with oil outlet 170, and the other end is communicated with plunger valve opening 140 by draining hole 180, aperture 190; Oil drain valve spring 610 is pressed in steel ball 630 on draining through hole 641 entrances of draining valve seat 640 by oil drain valve spring seat 620.
Referring to Fig. 1 and Fig. 2, a fuel-displaced connecting sleeve 700 is installed in oil outlet 170, be hollow in this fuel-displaced connecting sleeve 700 and be connected with the high-pressure oil feed track.
Referring to Fig. 1 and Fig. 4, plunger valve parts 800 are installed in plunger valve opening 140.In conjunction with referring to Fig. 4, plunger valve parts 800 comprise plunger bushing 810, plunger 820, the piston spring seat of honour 830, lower 840 of piston spring, plunger snap ring 850, outside framework oil seal 860, piston spring 870; Be installed in to plunger bushing 810 interference fit the bottom of plunger valve opening 140, the top of plunger 820 is inserted in the plunger bushing 810, the piston spring seat of honour 830 is fixed on the pump housing 100, the piston spring seat of honour 830 is provided with the bottom surface through hole 832 that inner bore of step 831 and plunger 820 pass, plunger snap ring 850, outside framework oil seal 860 are installed in the inner bore of step 831 at the piston spring seat of honour 830, and plunger 820 is provided with step 821.Inner bore of step 831 interference fit at plunger snap ring 850 and the piston spring seat of honour 830, its terrace 851 of appearing on the stage contacts with 830 upper-end surfaces, the piston spring seat of honour.
Plunger 820 is supported on the piston spring seat of honour 830 by outside framework oil seal 860 and plunger snap ring 850, and the below at the piston spring seat of honour 830 is extended in the lower end of this plunger 820; Step 821 end faces that the bottom surface boss 852 of plunger snap ring 850 hooks plunger 820 overcome the precompression of piston spring 870, and the bottom surface of outside framework oil seal 860 contacts with inner bore of step 831 bottom surfaces at the piston spring seat of honour 830, seals.Outside framework oil seal 860 endoporus cooperate with plunger 820 cylindricals, seal.Be fixed with lower 840 of piston spring in the lower end of plunger 820, piston spring 870 is enclosed within on the plunger 820, and the upper end of piston spring 870 is connected with the piston spring seat of honour 830, and the lower end is connected with lower 840 of piston spring.
The working principle of the utility model gasoline direct Injection Pump is as follows:
Gasoline in the engine oil tank enters in the voltage stabilizing oil pocket 211 by the oil inlet hole 221 in the fuel inlet fitting 220 on the voltage regulation part 200, and the filter cleaner 230 in the fuel inlet fitting 220 interior oil inlet holes 221 works the impurity particle effect in the gasoline of filtering.Gasoline enters into voltage stabilizing oil pocket 211 through filter cleaner 230, gasoline is incorporated in the step hole 150 by the oil-feed aperture 130 of the pump housing 100 upper-end surfaces, because the electromagnet 401 in the electromagnetic drive 400 does not have turn-on current, the spring force that the spring force that valve rod spring 440 produces produces greater than oiling valve spring 320, valve rod 420 backs down oil-feed valve block 330 under valve rod spring 440 spring-force driven duals.Gasoline is from step hole 150 by the radially oil-through hole 312 on the oil-feed valve seat 310, axially the oily breach 341 of mistake on oil-through hole 313, oiling valve spring seat receiving cavity 314 and the oiling valve spring seat 340 enters into the plunger valve opening 140 in the pump housing 100.
When plunger 820 when piston spring 870 spring-force driven duals move downward, gasoline is inhaled in plunger valve opening 140 and plunger bushing 810 endoporus, when plunger 820 moves upward under the driving of engine cam power, gasoline is compressed in plunger valve opening 140 and plunger bushing 810 endoporus, in plunger valve opening 140 interior generation high pressure gasoline, this moment, ECU provided electrical signal at reasonable time, made electromagnet 401 energisings.Electromagnet 401 produces magnetic field magnetisation cylinder iron core 490, cylinder iron core 490 is by magnetic attraction armature 470, armature 470 is fixed together with valve rod 420, armature 470 band ovable valve stems 420 move together, valve rod 420 is separated with oil-feed valve block 330 end faces, under high pressure gasoline and oiling valve spring 320 force actions, so that oiling valve spring seat receiving cavity 314 bottom surfaces of oil-feed valve block 330 and oil-feed valve seat 310 stick together, seal axial oil-through hole 313 on the oil-feed valve seat 310 to seal high pressure gasoline, make high pressure gasoline can not enter into the step hole 150 of the pump housing 100.
At this moment, the oil through 511 of high pressure gasoline in the plunger valve opening 140 by oil outlet 160 and delivery valve seat 510 is after overcoming oil outlet valve spring 540 resistances, open fuel-displaced valve plate 520, high pressure gasoline flows in the oil outlet 170 by the oil through 511 of oil outlet 160, delivery valve seat 510 and the oil outlet 541 on the oil outlet valve spring cover 540 cover walls, then enter in the high pressure rail of storage high pressure oil by fuel-displaced connecting sleeve 700, thereby provide high pressure gasoline for the gasoline direct system.
When plunger 820 is again descending, gasoline pressure is lower than gasoline pressure in the oil outlet 170 in the plunger valve opening 140, this moment, high pressure gasoline and oil outlet valve spring 540 acted on fuel-displaced valve plate 520 end faces, so that fuel-displaced valve plate 520 fits together with delivery valve seat 510 end faces, sealed high pressure oil.
When the high pressure rail intermediate fuel oil is higher than restriction pressure, gasoline can act on by the draining through hole 641 of draining valve seat 640 on steel ball 630 surfaces, behind the spring force that overcomes oil drain valve spring 610, so that steel ball 630 leaves draining through hole 641 entrances of draining valve seat 640, high pressure gasoline reenters in the plunger valve opening 140 by draining through hole 641, draining hole 180, the aperture 190 of draining valve seat 640.
When motor does not need the Injection Pump fuel feeding, electromagnet 401 no electric circuits, the spring force that the spring force that valve rod spring 440 produces produces greater than oiling valve spring 320, valve rod 420 backs down oil-feed valve block 330 under valve rod spring 440 spring-force driven duals.The high pressure gasoline that makes plunger valve opening 140 when plunger 820 is up by the oily breach 341 of the mistake on the oiling valve spring seat 340, oiling valve spring seat receiving cavity 314, axially oil-through hole 313, radially oil-through hole 312 is got back in the step hole 150, then flow in the voltage stabilizing oil pocket 211 by oil-feed aperture 130.
Flowing back into voltage stabilizing oil pocket 211 when interior, voltage stabilizing this moment dish 260 is compressed under the impact of high pressure gasoline, thereby Free up Memory reduces high pressure gasoline to the impact of whole Injection Pump, makes the Injection Pump operation more steady, reduces vibration.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (11)
1. gasoline direct Injection Pump, it is directly installed on engine cylinder and covers, and it is characterized in that, comprising:
One pump housing, has an oil-feed aperture in the described pump housing, one in order to be installed into the first step hole of fuel tap parts and electromagnetic drive, one in order to install the first oil outlet of outlet valve parts, one in order to install the second oil outlet of fuel-displaced connecting sleeve, one in order to install the draining hole of oil drain valve parts, the one plunger valve opening in order to erection column plug valve parts, described the first oil outlet and first step hole are positioned at the both sides of described plunger valve opening and connect with this plunger valve opening respectively, described oil-feed aperture and described first step hole connect, described draining hole connects with described plunger valve opening on the one hand, connect with described the second oil outlet on the other hand, described the second oil outlet also connects with described the first oil outlet;
One is installed in the voltage regulation part on the described pump housing, and the oil inlet hole of this voltage regulation part is connected with engine oil tank, has a voltage stabilizing oil pocket in the described voltage regulation part, and this voltage stabilizing oil pocket is communicated with described oil-feed aperture;
One is installed in the oiling valve parts in the described first step hole, and these oiling valve parts are in order to open and close the passage between described oil-feed aperture and the described first step hole;
One is installed in the electromagnetic drive in the described first step hole, and this electromagnetic drive acts on the described oiling valve parts, drives into the fuel tap parts and opens and close, and this electromagnetic drive is subjected to the ECU unit controls;
One is installed in the plunger valve parts in the described plunger valve opening;
One is installed in the outlet valve parts in described the first oil outlet, and these outlet valve parts can open and close the passage between the first oil outlet and the second oil outlet under described plunger valve opening inner high voltage oil and self spring action;
One is installed in the oil drain valve parts in the described draining hole, opens and closes the passage between the second oil outlet and the spill port under the high pressure oil that these oil drain valve parts can be in the high-pressure oil feed track and self spring action;
One is installed in the fuel-displaced connecting sleeve in described the second oil outlet, is hollow in this fuel-displaced connecting sleeve and is connected with the high-pressure oil feed track.
2. gasoline direct Injection Pump as claimed in claim 1, it is characterized in that, described voltage regulation part comprises that one is fixed on pump body top cover and the voltage stabilizing dish on the described pump housing, form a described voltage stabilizing oil pocket between described pump body top cover and the pump housing, described voltage stabilizing dish is installed in the described voltage stabilizing oil pocket by voltage stabilizing dish trim ring and voltage stabilizing dish seat ring; Be provided with a fuel inlet fitting that is connected with described engine oil tank in described pump body top cover, be provided with described oil inlet hole in the described fuel inlet fitting, in the described oil inlet hole filter cleaner is installed.
3. gasoline direct Injection Pump as claimed in claim 2 is characterized in that, two corrugated voltage stabilizing sheets were welded about described voltage stabilizing dish adopted, and were filled with gas medium between two corrugated voltage stabilizing sheets.
4. gasoline direct Injection Pump as claimed in claim 1, it is characterized in that, described oiling valve parts comprise the oil-feed valve seat, the oiling valve spring, oil-feed valve block and oiling valve spring seat, be provided with a valve rod hole that supplies the valve rod in the described electromagnetic drive to pass on the described oil-feed valve seat, oil-through hole radially, axial oil-through hole and oiling valve spring seat receiving cavity, described valve rod hole, axially oil-through hole and the coaxial setting of oiling valve spring seat receiving cavity, the internal diameter of wherein said axial oil-through hole is greater than the internal diameter of valve rod hole but less than the external diameter of oil-feed valve block, described radially oil-through hole is communicated with oil-feed aperture on the pump housing, and described axial oil-through hole and described radially oil-through hole and oiling valve spring seat receiving cavity connect; Described oiling valve spring seat, oiling valve spring and oil-feed valve block are installed in the described oiling valve spring seat receiving cavity, wherein the outer rim of oiling valve spring seat is connected with the inner wall sealing of described oiling valve spring seat receiving cavity, it is inboard that described oil-feed valve block is attached to described axial oil-through hole, described oiling valve spring is arranged between described oil-feed valve block and the oiling valve spring seat, the oiling valve spring is pressed in the oil-feed valve block on the described oil-feed valve seat, to seal up axial oil-through hole, offer one in the bottom surface of described oiling valve spring seat and cross oily breach, described oil-feed breach is communicated with described oiling valve spring seat receiving cavity with described plunger valve opening.
5. gasoline direct Injection Pump as claimed in claim 1, it is characterized in that, described electromagnetic drive comprises valve body, valve rod, valve rod back-up ring, valve rod spring, valve rod spring seat, magnetic partiting ring, armature, connecting sleeve, cylinder iron core, electromagnet, electromagnet block, electromagnet snap ring, electromagnet casing, the first end of described valve body is installed in the described first step hole, the second end extends the described pump housing, is provided with a boss of accepting the valve rod spring in the neutral position of described valve rod; Described electromagnet casing is fixed on the described valve body, has an inner bore of step in the described valve body, described valve rod is slidably supported in the inner bore of step of described valve body by valve rod back-up ring, valve rod spring seat and magnetic partiting ring, described valve rod spring housing is on the described valve rod and between the boss on the described valve rod and valve rod spring seat, wherein said valve rod back-up ring is positioned at the large diameter hole of described inner bore of step, and described valve rod spring seat and magnetic partiting ring are positioned at the small diameter bore of described inner bore of step and the outside that magnetic partiting ring is positioned at described valve rod spring seat; The first end of described valve rod extends in the described first step hole and passes valve rod hole and axial oil-through hole and acting on the described oil-feed valve block in the described oil-feed valve seat, and the second end of valve rod is inserted in the described magnetic partiting ring; The second end at described valve body is connected with connecting sleeve, in described connecting sleeve, be provided with armature and be connected with the first end of described cylinder iron core, described armature is fixedly connected with the second end of described valve rod and between the end face of described magnetic partiting ring and described cylinder iron core first end, the internal diameter Spielpassung of armature outer rim and connecting sleeve leaves one between the end face of armature exterior edge face and described cylinder iron core first end simultaneously and opens valve clearance; Described electromagnet is provided with in the electromagnet casing and is centered around the periphery of described cylinder iron core; Described electromagnet block is arranged in the described electromagnet casing and the axial position of electromagnet is limited, and the second end of described cylinder iron core passes described electromagnet block and blocked by the electromagnet snap ring.
6. gasoline direct Injection Pump as claimed in claim 5 is characterized in that, is provided with some logical oily breach in the outer rim of described valve rod spring seat.
7. gasoline direct Injection Pump as claimed in claim 1 is characterized in that, described outlet valve parts are an oil outlet one-way valve.
8. gasoline direct Injection Pump as claimed in claim 7, it is characterized in that, described oil outlet one-way valve comprises delivery valve seat, fuel-displaced valve plate, the oil outlet valve spring cover, oil outlet valve spring, in the described delivery valve seat oil through is arranged, the first end of this delivery valve seat is installed in described the first oil outlet, described oil outlet valve spring cover is installed on the second end of described delivery valve seat and is arranged in described the second oil outlet, cover wall at described oil outlet valve spring cover offers oil outlet, described fuel-displaced valve plate and oil outlet valve spring are arranged in the described oil outlet valve spring cover, and described oil outlet valve spring is pressed in described fuel-displaced valve plate on the aperture of oil through of described delivery valve seat.
9. gasoline direct Injection Pump as claimed in claim 1 is characterized in that, described oil drain valve parts are a draining one-way valve.
10. gasoline direct Injection Pump as claimed in claim 9, it is characterized in that, described draining one-way valve comprises oil drain valve spring, oil drain valve spring seat, steel ball, the draining valve seat that is installed in the described draining hole, be provided with the draining through hole in the wherein said draining valve seat, described draining through hole one end is communicated with described the second oil outlet, and the other end is communicated with described plunger valve opening by the draining hole; Described oil drain valve spring is pressed in described steel ball on the draining through hole entrance of described draining valve seat by the oil drain valve spring seat.
11. gasoline direct Injection Pump as claimed in claim 1 is characterized in that, described plunger valve parts comprise plunger bushing, plunger, the piston spring seat of honour, lower of piston spring, plunger snap ring, outside framework oil seal, piston spring; Be installed in to described plunger bushing interference fit the bottom of described plunger valve opening, the top of described plunger is inserted in the described plunger bushing, the described piston spring seat of honour is fixed on the described pump housing, described plunger is supported on the described piston spring seat of honour by described outside framework oil seal and plunger snap ring, and the below at the described piston spring seat of honour is extended in the lower end of this plunger; Be fixed with lower of described piston spring in the lower end of described plunger, described piston spring is enclosed within on the described plunger, and the upper end of piston spring is connected with the piston spring seat of honour, and the lower end is connected with lower of piston spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220458974 CN202900501U (en) | 2012-09-10 | 2012-09-10 | Gasoline direct injection fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220458974 CN202900501U (en) | 2012-09-10 | 2012-09-10 | Gasoline direct injection fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900501U true CN202900501U (en) | 2013-04-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220458974 Expired - Fee Related CN202900501U (en) | 2012-09-10 | 2012-09-10 | Gasoline direct injection fuel injection pump |
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| Country | Link |
|---|---|
| CN (1) | CN202900501U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817756A (en) * | 2012-09-10 | 2012-12-12 | 南岳电控(衡阳)工业技术有限公司 | Gasoline direct injection fuel injection pump |
| WO2020080005A1 (en) * | 2018-10-19 | 2020-04-23 | 日立オートモティブシステムズ株式会社 | High-pressure fuel pump |
-
2012
- 2012-09-10 CN CN 201220458974 patent/CN202900501U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817756A (en) * | 2012-09-10 | 2012-12-12 | 南岳电控(衡阳)工业技术有限公司 | Gasoline direct injection fuel injection pump |
| CN102817756B (en) * | 2012-09-10 | 2015-02-11 | 南岳电控(衡阳)工业技术有限公司 | Gasoline direct injection fuel injection pump |
| WO2020080005A1 (en) * | 2018-10-19 | 2020-04-23 | 日立オートモティブシステムズ株式会社 | High-pressure fuel pump |
| CN112840119A (en) * | 2018-10-19 | 2021-05-25 | 日立安斯泰莫株式会社 | High-pressure fuel pump |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 421007 Hunan province Hengyang City Baishazhou steep ridge village Yanfeng District No. 10 Patentee after: The electronic (Hengyang) industrial technology Limited by Share Ltd Address before: 421007 Hunan province Hengyang City Baishazhou steep ridge village Yanfeng District No. 10 Patentee before: Nanyue Electronic Control (Hengyang) Industry Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20200910 |