CN104061097A - Electric control uniset fuel injection pump for diesel engine - Google Patents
Electric control uniset fuel injection pump for diesel engine Download PDFInfo
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- CN104061097A CN104061097A CN201410343371.XA CN201410343371A CN104061097A CN 104061097 A CN104061097 A CN 104061097A CN 201410343371 A CN201410343371 A CN 201410343371A CN 104061097 A CN104061097 A CN 104061097A
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Abstract
Disclosed is an electric control uniset fuel injection pump for a diesel engine. According to the electric control uniset fuel injection pump for the diesel engine, a pump body plunger cavity is communicated with a high-pressure oil hole, an electromagnetic installation hole and a low-pressure oil supply cavity are formed in the two lateral sides, are communicated through a middle connection hole and are perpendicularly communicated with the high-pressure oil hole, the front section of a plunger is assembled in a plunger cavity, the rear section of the plunger is sleeved with a plunger spring and connected with a lower spring base which is embedded in a push rod body, an armature is movably installed in an armature hole of an electromagnet in a sleeved mode, the electromagnet is installed in an electromagnet installation hole, one end of a valve element fixedly installed in the armature hole penetrates through the middle connection hole to extend into the low-pressure oil supply cavity and abut against a lift check block, and the lift check block is connected with an oil inlet pipe. An electric control system is communicated with the electromagnet to control the action of the armature and the valve element, an oil supply system of a traditional fuel injection pump is converted into a fuel injection system featured in time, oil supply timing and quantity are controlled and adjusted precisely, the pressure of the end of the pump is high, oil consumption is low, and noise is low.
Description
Technical field
The present invention relates to matched with diesel engine parts, relate in particular to single cylinder fuel injection pump.
Background technique
Single cylinder diesel is the small power generating machine on China basis, in the development of over half a century, Chinese industrial production and rural economy has been brought into play to huge effect, particularly aspect transportation, irrigation, processing, is taking on main power source.Along with the raising of scientific and technological level and the development of economic construction, the energy-conserving and environment-protective of dynamic power machine are required to increasingly stringent, injection pump assembly is as the heart of single diesel engine, and the raising of gear sub-level stands in the breach.Traditional mechanical type Injection Pump is by plunger coupled parts, delivery valve matching parts, adjustment shift fork parts, the composition such as delivery valve holder, piston spring, by changing the Dimensions of the relevant component such as diameter of plunger, supporting with the single cylinder diesel of different model specification, utilize the cam on diesel engine to rotate, push the to-and-fro motion of tappet body drive plunger, produce high pressure, fuel oil pressurization by input Injection Pump, sprays into the work done of cylinder of diesel engine compression ignite by oil sprayer.The size of fuel injection quantity is regulated by the mechanical centrifugal formula speed regulator on diesel engine, makes diesel engine export different power.Domestic air-cooled single cylinder diesel for example, due to the congenital reason (skewed slot plunger) of structural design at present, pump end pressure is only 30MPa left and right, the low atomization quality that causes of pump end pressure is poor, fuel oil and air mixed combustion are abundant not, produce a large amount of particle and smog, befouling environment, adopt mechanical type Injection Pump and speed regulator, diesel engine noise is large, the adjusting speed accuracy of speed regulator is not high, recover low precision, cannot meet the requirement of governor control characteristics, the fuel supply advance angle under different rotating speeds can not be realized continuously adjustable.Very easily wear and tear in the helical groove structure gauge size place of plunger, working life is short.Develop in the world at present advanced automatically controlled single cylinder engine, but the automatically controlled simplex pump structure of preparation is more complicated, manufacture cost is high, universal comparatively difficulty.
Summary of the invention
Object of the present invention, be just to provide a kind of simple in structure, reliable performance, easy to use, with the matched electrical control oil spray pump of single cylinder diesel, effectively improve pump end pressure, accurate adjustment fuel supply advance angle and fuel delivery, capable of saving fuel oil, reduces noise, guarantees to meet the supporting requirement of one-cylinder diesel machine host, quality is good, efficiency is high, and the life-span is long, improves economic and social benefits.
Task of the present invention completes like this: design and produce a kind of use for diesel engine electric control monoblock fuel-injection pump, by plunger assembly, electromagnetic valve component, fuel feeding assembly, be installed on the pump housing and form, by electric control system controls fuel feeding, on the pump housing, axially have plunger lumen pore and connect perforation high pressure oilhole, bi-side have electromagnet mounting hole and low pressure oil supply chamber, by connecting mesopore, be communicated with, and with high pressure oilhole vertical connection; Plunger assembly comprises plunger, piston spring, spring lower seat, pusher body, and the leading portion of plunger is fitted in the plunger lumen pore of the pump housing, and lower of back segment suit piston spring linking springs, is inlaid in pusher body; Electromagnetic valve component comprises electromagnet, armature, spool, return spring, in the armature hole of electromagnet the inner, movable set armature is installed in the electromagnet mounting hole of the pump housing, armature mesopore is fixedly mounted with spool, spool one end is sleeved in the valve core spring hole at electromagnet center, the other end is through the connection mesopore in the middle of the pump housing, and end card stretches into low pressure oil supply chamber, inconsistent with the lift block of fuel feeding assembly; Fuel feeding assembly comprises lift block, oil inlet pipe, lift block is installed in the low pressure oil supply chamber of the pump housing, interior edge face be connected in the spool end card of nose end inconsistent, the pipe joint of oil inlet pipe is sleeved in the endoporus of lift block, oil inlet pipe outer end can connect fuel supply line and connect fuel tank, with screw, bonnet is fastened on the pump housing to the aperture in shutoff low pressure oil supply chamber.The pump housing is the integrated member that rectangular body and cylinder axis body connect and compose, cylinder axis body end face has axial plunger lumen pore, with rectangular body central shaft to high pressure oilhole be connected and connect the pump housing, rectangular body both sides are provided with the fitting seat with screw hole, for equipped with diesel-engine body, front and back pump face is offered respectively electromagnet mounting hole and low pressure oil supply chamber radially, centre is communicated with by connecting mesopore, middle connection mesopore and high pressure oilhole vertical connection, electromagnet mounting hole and low pressure oil supply chamber are step hole, the outside opening of macropore, in hole, be equipped with respectively electromagnet and lift block, equipped plunger in axial plunger lumen pore.The plunger of plunger assembly is step type major axis body, large end axis body movable set is in the plunger lumen pore of the pump housing, the end of small end axis body is inlaid in spring lower seat, is sleeved in pusher body inner chamber, and piston spring is sleeved on plunger outside, one end holds out against on spring lower seat, the other end is stuck on the step surface of cylinder axis body of the pump housing, and cylinder axis body end has eccentric circlip groove, suit plunger back-up ring, plunger back-up ring one side embed plunger lumen pore, the large end axis body of block plunger.The electromagnet of electromagnetic valve component is short cylinder with the level, periphery gang socket, can be communicated with automatical control system, electromagnet the inner is inlaid in the electromagnet mounting hole of the pump housing, outside is fastened on the pump housing with electromagnet nut, the inner of electromagnet has the valve core spring hole of connection outer end, armature hole, valve core spring hole is thinner step hole, connect electromagnet exterior edge face, can connect return tube, the armature movable set of dish axle shape is in electromagnet armature hole, in the mesopore of armature, be fixedly mounted with spool, spool is elongated step axis body, inner through the connection mesopore on the pump housing, end card stretches into low pressure oil supply chamber, contact with lift block, spool outer end is stretched in the valve core spring hole of electromagnet, suit return spring, spool neck annular groove cover cartridge spool back-up ring contacts armature outer end card, spool back-up ring outside suit sheath, in valve core spring hole, step seam is equipped with check ring, the two ends of return spring contact respectively on check ring and sheath end, the axis body overcoat balance spring of armature, balance spring one end contacts the interior card of armature, the other end conflict electromagnet mounting hole be connected on the step surface that mesopore joins.The pump housing plays the effect of valve body in fact simultaneously.The lift block of fuel feeding assembly is step type axle sleeve structure, small end movable set is in the endoporus of the low pressure oil supply chamber of the pump housing, the end card of interior edge face and spool contacts, lift block inner chamber by radially and the oil through offered of end be connected with outside low pressure oil supply chamber; Suit seal ring in seal groove outside large end, equipped with hole wall sealing in hole outside low pressure oil supply chamber, hold greatly the interface tube that is equipped with oil inlet pipe in endoporus.Large end exterior edge face is concordant with pump housing exterior edge face, by screw, bonnet is fixed on the pump housing, by the shutoff of lift block in low pressure oil supply chamber.Automatical control system comprises integrated circuit controller, speed probe, accelerator pedal sensor, feedback conductor, instruction wire, integrated circuit controller and accelerator pedal sensor are installed in control room, integrated circuit controller provides power supply by storage battery, speed probe is installed on diesel-engine body, speed probe is connected integrated circuit controller with accelerator pedal sensor by feedback conductor, and integrated circuit controller connects the socket of electromagnet by instruction wire.Speed probe transfers to integrated circuit controller by momentary value and the mean value of the diesel engine speed obtaining, fuel feeding timing, angular acceleration by feedback conductor, the position corner angular transition that accelerator pedal sensor will speed up pedal becomes electrical signal, feed back to integrated circuit controller, integrated circuit controller carries out integrated treatment according to the feedback signal of receiving, determine fuel delivery and fuel feeding opportunity, by instruction wire, instruction is sent to electromagnet, the action of control solenoid valve, completes to the task of oil sprayer supply high pressure oil.
Operating principle is: when electromagnet no electric circuit, under the effect of return spring, the right-hand member of the related spool of armature in electromagnet mounting hole, now low pressure oil supply chamber be connected mesopore, high pressure oilhole, plunger lumen pore and be interconnected.If now plunger is descending, in plunger lumen pore, form negative pressure, be oil-feed state, the fuel oil in fuel supply line input low pressure oil supply chamber is under atmospheric pressure and Gravitative Loads, by connecting mesopore input high pressure oilhole and plunger lumen pore; When pushing pusher body, diesel engine cam promotes plunger when up, if electromagnet powers up, the active force that armature band movable valve plug overcomes return spring is moved to the left, the card blocking-up of spool end connects the communication gap in mesopore and low pressure oil supply chamber, in the promotion lower plunger lumen pore of plunger, form high pressure, by high pressure oilhole and high-pressure oil pipe, be communicated with oil sprayer, high pressure fuel is sprayed into cylinder of diesel engine.The frequency that powers up of electromagnet is synchronizeed with the upstream frequency of plunger, realizes high frequency fuel feeding.By magnet control armature and spool, move, traditional mechanical type Injection Pump be take to the oil supply system that plunger skewed slot positioning control fuel delivery and fuel injection timing be feature, be converted to and take the fuel injection system that time control is feature, intergrated circuit in prespecified range to fuel feeding opportunity and fuel delivery doing accurately select and regulate.
According to technique scheme, manufacture experimently, test, prove that the present invention is reasonable in design, compact structure, volume is little, lightweight, easy to install, accurately regulating and controlling fuel supply advance angle and fuel delivery, effectively improved pump end pressure, oil spout quality is good, efficiency is high, and oil consumption is low, noise is little, matching performance is good, the supporting needs of guaranteeing to meet single cylinder diesel, reach national emission regulation demands, are conducive to energy-conserving and environment-protective, economic benefit and social benefit are good, have reached preferably predetermined object.
Accompanying drawing explanation
Fig. 1 is that master of the present invention looks cross-sectional view;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is that the B of Fig. 1 is to plan view;
Fig. 4 is that the C of Fig. 1 is to view;
Fig. 5 is the cross-sectional view of the pump housing 4 in Fig. 1;
Fig. 6 is the electromagnetic valve component structural representation in Fig. 1;
Fig. 7 is the D partial structurtes enlarged view in Fig. 1;
Fig. 8 is the sectional view of the lift block 5 in Fig. 7;
Fig. 9 is the mounting point schematic diagram of the present invention on diesel-engine body 19;
Figure 10 is automatical control system schematic diagram of the present invention.
In figure, 1-electromagnet, 2-spool, 3-electromagnet nut, 4-pump housing, 5-lift block, 6-screw, 7-oil inlet pipe, 8-bonnet, 9-plunger, 10-piston spring, 11-plunger back-up ring, 12-pusher body, 13-spring lower seat, 14-packing ring, 15-armature, 16-check ring, 17-sheath, 18-spool back-up ring, 19-diesel-engine body, 20-oil sprayer, 21-fuel tank, 22-high-pressure oil pipe, 23-fuel supply line, 24-return tube, 25-instruction wire, 26-speed probe, 27-accelerator pedal sensor, 28-feedback conductor, 29-integrated circuit controller, 30-storage battery, A-line of vision symbol, B-line of vision symbol, C-line of vision symbol, D-local symbol, E-socket, F-valve core spring hole, H-connection mesopore, K-plunger lumen pore, L-high pressure oilhole, M-electromagnet mounting hole, N-low pressure oil supply chamber, P-balance spring, Q-seal ring, R-return spring, S-circlip groove, T-fitting seat, U-armature hole, X-oil through.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is illustrated.
Consult Fig. 1, Fig. 2, Fig. 3, Fig. 4, the present invention is installed on the pump housing 4 and is formed by plunger assembly, electromagnetic valve component, fuel feeding assembly, by electric control system controls fuel feeding, on the pump housing 4, axially have plunger lumen pore K and connect perforation high pressure oilhole L, bi-side have electromagnet mounting hole M and low pressure oil supply chamber N, by connecting mesopore H, be communicated with, and with high pressure oilhole L vertical connection; Plunger assembly comprises plunger 9, piston spring 10, spring lower seat 13, pusher body 12, and the leading portion of plunger 9 is fitted in the plunger lumen pore K of the pump housing 4, and lower 13 of back segment suit piston spring 10 linking springs, are inlaid in pusher body 12; Electromagnetic valve component comprises electromagnet 1, armature 15, spool 2, return spring R, in the armature hole U of electromagnet 1 the inner, movable set armature 15, be installed in the electromagnet mounting hole M of the pump housing 4, in armature 15 mesopores, be fixedly mounted with spool 2, spool 2 one end are sleeved in the valve core spring hole F at electromagnet 1 center, the other end is through the connection mesopore H in the middle of the pump housing 4, end card stretches into low pressure oil supply chamber N, and inconsistent with the lift block 5 of fuel feeding assembly, in fact the pump housing 4 plays the effect of electromagnetic valve body.Fuel feeding assembly comprises lift block 5, oil inlet pipe 7, and lift block 5 is installed in the low pressure oil supply chamber N of the pump housing 4, and interior edge face is inconsistent with the end card of spool 2 that is connected mesopore H end.The pipe joint of oil inlet pipe 7 is sleeved in the endoporus of lift block 5, and oil inlet pipe 7 outer ends can connect fuel supply line 23 and connect fuel tank 21, with screw 6, bonnet 8 are fastened on the pump housing 4, by the port closing of low pressure oil supply chamber N.Electromagnet mounting hole M and low pressure oil supply chamber N are step hole, and the outside opening of macropore is equipped with respectively electromagnet 1 and lift block 5 in hole, equipped plunger 9 in axial plunger lumen pore K.The plunger 9 of plunger assembly is step type major axis body, large end axis body movable set is in the plunger lumen pore K of the pump housing 4, the end of small end axis body is inlaid in spring lower seat 13, be sleeved in pusher body 12 inner chambers, piston spring 10 is sleeved on plunger 9 outsides, one end holds out against on spring lower seat 13, the other end is stuck on the step surface of cylinder axis body of the pump housing 4, cylinder axis body end has eccentric circlip groove S, suit plunger back-up ring 11, plunger back-up ring 11 1 sides embed plunger lumen pore K, the large end axis body of block plunger 9.
Consult Fig. 5, the pump housing 4 is the integrated member that rectangular body and cylinder axis body connect and compose, cylinder axis body end face has axial plunger lumen pore K, with rectangular body central shaft to high pressure oilhole L be connected and connect the pump housing 4, rectangular body both sides are provided with the fitting seat T with screw hole, and for equipped with diesel-engine body 19, both sides pump face is offered respectively electromagnet mounting hole M and low pressure oil supply chamber N radially, centre is communicated with by connecting mesopore H, middle connection mesopore H and high pressure oilhole L vertical connection.
Consult Fig. 6, electromagnet 1 is short cylinder with the level, periphery gang socket E, can be communicated with automatical control system, electromagnet 1 is inlaid in the electromagnet mounting hole M of the pump housing 4, outside is fastened on the pump housing 4 with electromagnet nut 3, the inner of electromagnet 1 has armature hole U and is communicated with spool spring eye F, valve core spring hole F is thinner step hole, connect electromagnet 1 exterior edge face, can connect return tube 24, armature 15 movable sets of dish axle shape are in the U of the armature hole of electromagnet 1, in the mesopore of armature 15, be fixedly mounted with spool 2, spool 2 is elongated step axis body, the inner connection mesopore H passing on the pump housing 4 stretches into low pressure oil supply chamber N, end card and the lift block 5 of spool 2 contact, spool 2 outer ends are stretched in the valve core spring hole F of electromagnet 1, suit return spring R, spool 2 neck annular groove cover cartridge spool back-up rings 18 contact armature 15 outer end cards, spool back-up ring 18 outside suit sheaths 17, in the F of valve core spring hole, step seam is equipped with check ring 16, the two ends of return spring R contact respectively on check ring 16 and sheath 17 ends, the axle extracorporeal set balance spring P of armature 15, balance spring P one end contacts the interior card of armature 15, the other end conflict electromagnet mounting hole M be connected on the step surface that mesopore H joins.
Consult Fig. 7, Fig. 8, lift block 5 is step type axle sleeve structure, small end movable set is in the N endoporus of the low pressure oil supply chamber of the pump housing 4, interior edge face and spool 2 stretch out that to be connected the end card of mesopore H end inconsistent, the inner chamber of lift block 5 by around radially and the oil through X that offers of end be connected with outside low pressure oil supply chamber N, in the seal groove of large end outside, be set with seal ring Q, equipped with the sealing of low pressure oil supply chamber N macropore hole wall, the interface tube of equipped oil inlet pipe 7 in large end endoporus, large end exterior edge face is concordant with the pump housing 4 exterior edge faces, by screw 6, bonnet 8 is fixed on the pump housing 4, by 5 shutoff of lift block in the N of low pressure oil supply chamber.
Consult Fig. 9, Figure 10, automatical control system comprises integrated circuit controller 29, speed probe 26, accelerator pedal sensor 27, feedback conductor 28, instruction wire 25, integrated circuit controller 29 and accelerator pedal sensor 27 are installed in control room, integrated circuit controller 29 provides power supply by storage battery 30, speed probe 26 is installed on diesel-engine body 19, speed probe 26 is connected integrated circuit controller 29 with accelerator pedal sensor 27 by feedback conductor 28, and integrated circuit controller 29 connects the socket E of electromagnet 1 by instruction wire 25.Speed probe 26 is by the diesel engine speed obtaining, fuel feeding regularly, the momentary value of angular acceleration and mean value transfer to integrated circuit controller 29 by feedback conductor 28, the position corner angular transition that accelerator pedal sensor 27 will speed up pedal becomes electrical signal, feed back to integrated circuit controller 29, integrated circuit controller 29 carries out integrated treatment according to the feedback signal of receiving, determine fuel delivery and fuel feeding opportunity, by instruction wire 25 gang socket E, instruction is sent to the electromagnet 1 on the pump housing 4, control armature 15 and spool 2 actions of solenoid valve, complete to the task of oil sprayer 20 supply high pressure oils.
Operating principle is: when electromagnet 1 no electric circuit, under the effect of return spring R, the right-hand member of the related spool 2 of armature 15 in electromagnet mounting hole, now the end card of spool 2 leaves gap with being connected between mesopore H, low pressure oil supply chamber N be connected mesopore H, high pressure oilhole L, plunger lumen pore K is interconnected.If now plunger 9 is descending, in plunger lumen pore K, form negative pressure, in oil-feed state, the fuel oil of fuel supply line 23 input low pressure oil supply chamber N is under atmospheric pressure and Gravitative Loads, by connecting mesopore H input high pressure oilhole L and plunger lumen pore K; When pushing pusher body 12, diesel engine cam promotes plunger 9 when up, if electromagnet 1 powers up, the active force that armature 15 overcomes return spring R with movable valve plug 2 is moved to the left, spool 2 end card blocking-up connect the communication gap of mesopore H and low pressure oil supply chamber N, under the promotion of plunger 9, in plunger lumen pore K, form high pressure, by high pressure oilhole L and high-pressure oil pipe 22, be communicated with oil sprayer 20, high pressure fuel is sprayed into cylinder of diesel engine.The frequency that powers up of electromagnet 1 is synchronizeed with the operating frequency of plunger 9, realizes high frequency fuel feeding.
The oil supply system that plunger skewed slot positioning control fuel delivery and fuel injection timing are feature is successfully take traditional Injection Pump in the present invention, be converted to and take the fuel injection system that time control is feature, accurately regulating and controlling fuel supply advance angle and fuel delivery, pump end pressure can be brought up to 160MPa, reaches 5 times of traditional Injection Pump, and fuel oil consumption can reduce by 5 ~ 10%, reducing noise 15%, effects of energy conservation and environmental protection is remarkable, guarantees to meet the supporting needs of main frame, and economic benefit and social benefit are good.
Claims (6)
1. a use for diesel engine electric control monoblock fuel-injection pump, it is characterized in that being installed on the pump housing (4) and forming by plunger assembly, electromagnetic valve component, fuel feeding assembly, by electric control system controls fuel feeding, on the pump housing (4), axially have plunger lumen pore (K) and connect perforation high pressure oilhole (L), bi-side have electromagnet mounting hole (M) and low pressure oil supply chamber (N), by connecting mesopore (H), be communicated with, and with high pressure oilhole (L) vertical connection; Plunger assembly comprises plunger (9), piston spring (10), spring lower seat (13), pusher body (12), the leading portion of plunger (9) is fitted in the plunger lumen pore (K) of the pump housing (4), back segment suit lower of linking springs of piston spring (10) (13), is inlaid in pusher body (12); Electromagnetic valve component comprises electromagnet (1), armature (15), spool (2), return spring (R), the inner middle movable set armature (15) in armature hole (U) of electromagnet (1) is installed in the electromagnet mounting hole (M) of the pump housing (4), armature (15) mesopore is fixedly mounted with spool (2), spool (2) one end movable set is in the valve core spring hole (F) at electromagnet (1) center, the other end is through the connection mesopore (H) in the middle of the pump housing (4), end card stretches into low pressure oil supply chamber (N), inconsistent with the lift block (5) of fuel feeding assembly; Fuel feeding assembly comprises lift block (5), oil inlet pipe (7), lift block (5) is installed in the low pressure oil supply chamber (N) of the pump housing (4), interior edge face is inconsistent with the spool (2) that is connected mesopore (H) end, the pipe joint of oil inlet pipe (7) is sleeved in the mesopore of lift block (5), oil inlet pipe (7) outer end can connect fuel supply line (23) and connect fuel tank (21), with screw (6), bonnet (8) is fastened on to the aperture in the upper shutoff low pressure oil supply chamber (N) of the pump housing (4).
2. according to use for diesel engine electric control monoblock fuel-injection pump claimed in claim 1, it is characterized in that the described pump housing (4) is the integrated member that rectangular body and cylinder axis body connect and compose, cylinder axis body end face has axial plunger lumen pore (K), with rectangular body central shaft to high pressure oilhole (L) be connected and connect the pump housing (4), rectangular body both sides are provided with the fitting seat (T) with screw hole, for equipped with diesel-engine body (19), both sides pump face is offered respectively electromagnet mounting hole (M) and low pressure oil supply chamber (N) radially, middle by connecting mesopore (H) connection, middle connection mesopore (H) and high pressure oilhole (L) vertical connection, electromagnet mounting hole (M) is step hole with low pressure oil supply chamber (N), the outside opening of macropore, in hole, be equipped with respectively electromagnet (1) and lift block (5), equipped plunger (9) in axial plunger lumen pore (K).
3. according to use for diesel engine electric control monoblock fuel-injection pump claimed in claim 1, the plunger (9) that it is characterized in that described plunger assembly is step type major axis body, large end axis body movable set is in the plunger lumen pore (K) of the pump housing (4), the end of small end axis body is inlaid in spring lower seat (13), be sleeved in pusher body (12) inner chamber, piston spring (10) is sleeved on plunger (9) outside, one end holds out against on spring lower seat (13), the other end is stuck on the step surface of cylinder axis body of the pump housing (4), cylinder axis body end has eccentric circlip groove (S), suit plunger back-up ring (11), plunger back-up ring (11) one sides embed plunger lumen pore (K), the large end axis body of block plunger (9).
4. according to use for diesel engine electric control monoblock fuel-injection pump claimed in claim 1, the electromagnet (1) that it is characterized in that described electromagnetic valve component is short cylinder with the level, periphery is provided with socket (E), can be communicated with automatical control system, electromagnet (1) the inner is inlaid in the electromagnet mounting hole (M) of the pump housing (4), outside is fastened on the pump housing (4) with electromagnet nut (3), the inner of electromagnet (1) has the valve core spring hole (F) that armature hole (U) is communicated with outer end, valve core spring hole (F) is thinner step hole, connect electromagnet (1) exterior edge face, can connect return tube (24), dish axle shape armature (15) movable set is in the armature hole of electromagnet (1) (U), in the mesopore of armature (15), be fixedly mounted with spool (2), spool (2) is elongated step axis body, inner through the connection mesopore (H) on the pump housing (4), end card stretches into low pressure oil supply chamber (N), contact with lift block (5), spool (2) outer end is stretched in the valve core spring hole (F) of electromagnet (1), suit return spring (R), spool (2) neck annular groove cover cartridge spool back-up ring (18) contacts armature (15) card, spool back-up ring (18) outside suit sheath (17), the interior step seam in valve core spring hole (F) is equipped with check ring (16), the two ends of return spring (R) contact respectively on check ring (16) and sheath (17) end, the axle extracorporeal set balance spring (P) of armature (15), balance spring (P) one end contacts the interior card of armature (15), the other end conflict electromagnet mounting hole (M) be connected on the step surface that mesopore (H) joins.
5. according to use for diesel engine electric control monoblock fuel-injection pump claimed in claim 1, the lift block (5) that it is characterized in that described fuel feeding assembly is step type axle sleeve structure, small end movable set is in the endoporus of the low pressure oil supply chamber of the pump housing (4) (N), conflict with the end card of spool (2), lift block (5) inner chamber by radially and the oil through (X) offered of end be connected with outside low pressure oil supply chamber (N), in the seal groove of large end outside, be set with seal ring (Q), equipped with the sealing of outer hole, low pressure oil supply chamber (N) hole wall, the interface tube of equipped oil inlet pipe (7) in large end endoporus, large end exterior edge face is concordant with the pump housing (4) exterior edge face, by screw (6), bonnet (8) is fixed on the pump housing (4), by lift block (5) shutoff in low pressure oil supply chamber (N).
6. according to use for diesel engine electric control monoblock fuel-injection pump claimed in claim 1, it is characterized in that described automatical control system comprises integrated circuit controller (29), speed probe (26), accelerator pedal sensor (27), feedback conductor (28), instruction wire (25), integrated circuit controller (29) and accelerator pedal sensor (27) are installed in control room, integrated circuit controller (29) provides power supply by storage battery (30), speed probe (26) is installed on diesel-engine body (19), speed probe (26) is connected integrated circuit controller (29) with accelerator pedal sensor (27) by feedback conductor (28), integrated circuit controller (29) connects the socket (E) of electromagnet (1) by instruction wire (25).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410343371.XA CN104061097A (en) | 2014-07-18 | 2014-07-18 | Electric control uniset fuel injection pump for diesel engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410343371.XA CN104061097A (en) | 2014-07-18 | 2014-07-18 | Electric control uniset fuel injection pump for diesel engine |
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| CN201410343371.XA Pending CN104061097A (en) | 2014-07-18 | 2014-07-18 | Electric control uniset fuel injection pump for diesel engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847554A (en) * | 2015-04-09 | 2015-08-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Electric control unit pump for diesel machine |
| CN109404193A (en) * | 2017-08-16 | 2019-03-01 | 罗伯特·博世有限公司 | Method and apparatus for detecting pilot injection oil mass deviation |
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| CN109404193A (en) * | 2017-08-16 | 2019-03-01 | 罗伯特·博世有限公司 | Method and apparatus for detecting pilot injection oil mass deviation |
| CN109404193B (en) * | 2017-08-16 | 2021-11-12 | 罗伯特·博世有限公司 | Method and device for detecting a deviation in the amount of pre-injected oil |
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