CN103688047A - High-pressure injection system - Google Patents
High-pressure injection system Download PDFInfo
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- CN103688047A CN103688047A CN201280036165.3A CN201280036165A CN103688047A CN 103688047 A CN103688047 A CN 103688047A CN 201280036165 A CN201280036165 A CN 201280036165A CN 103688047 A CN103688047 A CN 103688047A
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- pressure
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- transfer pump
- transfer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
- F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
- F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel pressure
- F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
- F02D41/3854—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped with elements in the low pressure part, e.g. low pressure pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/38—Pumps characterised by adaptations to special uses or conditions
- F02M59/42—Pumps characterised by adaptations to special uses or conditions for starting of engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
- F02M63/0265—Pumps feeding common rails
- F02M63/027—More than one high pressure pump feeding a single common rail
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel pressure
- F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Method for operating a high-pressure injection system (1) for a combustion engine (8), comprising the steps of: conveying the fuel by means of a conveyance pump (3) to a high-pressure pump (2), conveying the fuel by means of the high-pressure pump (2) to a high-pressure rail (10) under high pressure, and conveying the fuel by means of the conveyance pump (3), before starting the combustion engine (8), to the high-pressure rail (10), wherein the conveyance pump (3) is operated in two different conveyance directions, and in a first conveyance direction the fuel is conveyed to the high-pressure pump (2), and in a second direction opposite the first conveyance direction the fuel is conveyed into the high-pressure rail (10) before starting the combustion engine (8).
Description
Technical field
The present invention relates to according to claim 1 preamble for moving the method for high-pressure injection system and the high-pressure injection system of preamble according to Claim 8.
Background technique
At the high-pressure injection system for internal-combustion engine, especially, in diesel engine or petrolic common-rail injection system, for maintaining the high-pressure service pump of pressure, supply fuel to the high pressure rail of described high pressure accumulator or common-rail injection system.Described high-pressure service pump can be for example camshaft by internal-combustion engine utilize live axle to drive.The pre-transfer pump of general use is transported to high-pressure service pump by fuel, and described pre-transfer pump is gear pump or revolving valve vacuum pump, and described pre-transfer pump is arranged in described high-pressure service pump upstream.Described pre-transfer pump passes through fuel channel transfer the fuel to described high-pressure service pump from fuel tank.
Especially use reciprocating pump as high-pressure service pump.Live axle is placed in housing.In the radial direction, piston is arranged in cylinder body.Guide wheel abuts on the live axle with at least one cam, and described guide wheel has roller-rolling surface, and roller-rolling surface is placed in roller boots.Described roller boots are connected with described piston, thereby described piston is coerced into doing the translational motion of vibration.Spring is applied to the power radial oriented with respect to live axle on described roller boots, so that described guide wheel and described live axle continuous contact.Described guide wheel forms and contacts with described live axle on the axle-rolling surface as drive shaft surface with roller-rolling surface, and wherein said live axle has at least one cam.Described guide wheel utilizes sliding supported condition in roller boots.
As mentioned above, described high-pressure shaft for example, is driven by an axle (camshaft of internal-combustion engine).So described high-pressure service pump can under high pressure be transported to high pressure rail by fuel, thereby internal-combustion engine need to be driven or be started by actuating motor.Only, when the bent axle of internal-combustion engine or camshaft rotatablely move, the live axle of described high-pressure service pump also rotates, thereby only when internal-combustion engine starts to start, fuel can be transported to described high pressure rail by high-pressure service pump.Thus, for starting start-up course, in high pressure rail and then on valve or injection valve or sparger, do not reach enough breakout pressures.Because actuating motor must drive described internal-combustion engine always, until fuel is transported to high pressure rail with described high-pressure service pump so that high pressure rail reaches enough breakout pressures, so the start-up course that this disadvantageous mode need to be longer, and then cause the starting time that internal-combustion engine need to be longer.Especially, at internal-combustion engine, utilize motor in Motor Vehicle-drive-stop in the frequent starting process of (MSS), be disadvantageous this longer starting time of internal-combustion engine.Knownly before internal combustion engine start, by high-pressure service pump, carry the fuel of being carried by pre-transfer pump to high pressure rail.
DE10 2,006 045 933A1 have described a kind of high-pressure service pump for high-pressure delivery fuel.Described high-pressure service pump has live axle, and described live axle has cam.Columniform roller is supported and is abutted on described cam by described roller boots.Described roller boots utilize tappet assembly to be bearing in the hole of described housing parts.Described pump parts are fixed on described tappet assembly.Helical spring pushes described tappet assembly to described cam.
From the known a kind of radial piston pump of DE103 56 262A1, for making the fuel injection system of internal-combustion engine produce fuel under high pressure.Live axle is supported in pump case.Piston support is on live axle, to make reciprocating motion of the pistons by rotating driveshaft.Tappet is arranged between described piston and live axle.
Summary of the invention
Method for operation of combustion engine high-pressure injection system according to the present invention has following steps: with pre-transfer pump, fuel is transported to high-pressure service pump, with described high-pressure service pump, described fuel is under high pressure transported to high pressure rail, before starting apparatus combustion engine, with described pre-transfer pump, described fuel is transported to described high pressure rail, wherein said pre-transfer pump is two different throughput direction operations, on the first throughput direction, described fuel is transported to described high-pressure service pump; On second throughput direction contrary with the first throughput direction, described fuel is transported in described high pressure rail before starting apparatus combustion engine.In order to carry described fuel to described high-pressure service pump or directly or to be immediately transported in described high pressure rail, the present invention only needs described pre-transfer pump to move on two different throughput directions.Thus, with simple especially and structure cheaply, fuel can be transported to described high-pressure service pump in the mode replacing by described pre-transfer pump or directly in described high pressure rail.
In an additional embodiment, before starting described internal-combustion engine, described pre-transfer pump does not utilize described pre-transfer pump to make fuel flow cross described high-pressure service pump and arrives described high pressure rail.Thereby described fuel can not flow through high-pressure service pump in an advantageous manner and directly supply with described high pressure rail before starting apparatus combustion engine.Therefore,, before starting apparatus combustion engine, in high pressure rail, can reach rapidly breakout pressure.
In a supplementary modification, described fuel is transported in described high pressure rail by HD fuel channel by described high-pressure service pump, and described fuel is transported in described high pressure rail by ND fuel channel by described pre-transfer pump.Therefore during internal combustion engine operation, described fuel is supplied to described high pressure rail by HD fuel channel by described high-pressure service pump, but before starting apparatus combustion engine, described fuel is directly supplied to described high pressure rail by described pre-transfer pump by described ND fuel channel.
If utilize safety check to control described fuel, be transported in described high-pressure service pump or be transported in described high pressure rail by described pre-transfer pump, this is object according to the invention.Therefore the present invention only needs safety check and the pre-transfer pump with two different throughput directions just fuel can be directed to described high-pressure service pump or directly by ND fuel channel, by described pre-transfer pump, be directed to described high pressure rail by described pre-transfer pump.
In another example, at least 1s, 5s, 10s or 20s before starting apparatus combustion engine and/or high-pressure service pump, utilize described pre-transfer pump that fuel is transported to described high pressure rail.
In an additional embodiment, pre-transfer pump is transported to described high pressure rail with breakout pressure described in described fuel utilization, and wherein said breakout pressure is for example at least 30 bar, 50 bar or 70 bar, especially between 80 bar and 120 bar.
In a supplementary example, described high-pressure service pump mechanically by described internal combustion engine drive and/or described pre-transfer pump by motoring.Described pre-transfer pump is by motoring, because described pre-transfer pump has been transported to fuel described high pressure rail before internal combustion engine operation.
In a supplementary modification, motor moves with the first sense of rotation along the first throughput direction of described pre-transfer pump, the second throughput direction along described pre-transfer pump moves with the second sense of rotation, and the first and second sense of rotation of wherein said motor are directed on the contrary.
In an additional embodiment, described pre-transfer pump is driven and is utilized described speed changer can make the throughput direction of described pre-transfer pump be switched to described the second throughput direction or be switched to described the first throughput direction by the second throughput direction by the first throughput direction by the speed changer switching in the middle of motor utilization.
If described pre-transfer pump installs and/or be incorporated into described high-pressure service pump additional, this is object according to the invention.
In a supplementary modification, described pre-transfer pump is configured to a vane pump.
Internal combustion engine high pressure ejecting system according to the present invention is particularly useful for automobile, comprises high-pressure service pump, pre-transfer pump, high pressure rail, and wherein said internal combustion engine high pressure ejecting system can be with the method operation described in present patent application.
In an additional embodiment, described pre-transfer pump has as the entrance of suction side and is used as outlet on the pressure side, described pre-transfer pump can move with two throughput directions different, opposed orientation, thus the described entrance as suction side and interchangeable as outlet on the pressure side.
In a supplementary modification, described pre-transfer pump utilizes ND fuel channel to be connected with high pressure rail with hydraulic way, and utilizes VHD fuel channel to be connected with described high-pressure service pump with hydraulic way.
In an additional example, safety check is arranged in fuel channel, thereby because the existence of described safety check, fuel can be particularly transported in described main officer of Tibet pressing plate along the first pre-transfer pump uniquely by described pre-transfer pump, and fuel is particularly transported in described high pressure rail uniquely along the second throughput direction of described high-pressure service pump.Therefore, only utilize safety check and the pre-transfer pump that can move at two different opposite directions just can alternately be supplied fuel to described high-pressure service pump or directly by ND fuel channel, be supplied to described high pressure rail before starting apparatus combustion engine by described pre-transfer pump.Thus, described high-pressure injection system is all simple especially, low-cost and reliable aspect manufacture and operation.
In a supplementary modification, described pre-transfer pump is gear pump; And/or the transfer efficiency of described pre-transfer pump can be controlled and/regulate; And/or described pre-transfer pump is to utilize the power-actuated pre-transfer pump of electric electromechanics; And/or fuel can be with for example discharge pressure between 3 and 6 bar by described pre-transfer pump, and for example the breakout pressure between 50 and 150 bar is carried.
Preferably, pre-transfer pump is with breakout pressure described in described fuel utilization, and for example at least 30 bar, 50 bar or 70 bar are especially transported to described high pressure rail between 80 bar and 120 bar.Normally in service at internal-combustion engine, fuel, with discharge pressure for example, in the scope of 3 bar and 6 bar, is especially carried by described pre-transfer pump in the scope of about 4 bar.Yet this discharge pressure is enough, so in the firing chamber that fuel can be ejected into internal-combustion engine by valve, described valve is for example injection valve or sparger.Need higher breakout pressure, for example at least 20 bar, 50 bar, 80 bar or 90 bar for this reason.Here, because of the node configuration of described pre-transfer pump, described pre-transfer pump can provide so high breakout pressure, thereby even if described high-pressure service pump does not move, utilizes described pre-transfer pump also can provide enough breakout pressures.
According to internal-combustion engine of the present invention, that have high-pressure injection system, be particularly useful for automobile, wherein said high-pressure injection system is configured to the high-pressure injection system described in present patent application and/or is implemented with the method described in present patent application by internal-combustion engine.
Especially, described pre-conveying pump motor is incorporated in described pre-transfer pump, and for example its mode is that permanent magnet is installed in gear.
In another modification, described motor is brushless motor and/or electronic commutation motor.
The pressure that described high-pressure service pump can produce in high pressure rail is positioned at for example scope of from 1000 to 3000 bar under diesel engine situation, or under petrol engine situation between 40 bar and 400 bar.
Accompanying drawing explanation
Below with reference to the accompanying drawings, describe embodiments of the invention in detail, wherein:
The obvious explanatory view of Fig. 1 high-pressure injection system; With
The view of Fig. 2 automobile.
Embodiment
The extremely schematically illustrated high-pressure injection system 1 of Fig. 1.High-pressure injection system 1 comprises high-pressure service pump 2, and fuel under high pressure pipeline 12 utilizes high-pressure service pump 2 under high pressure fuel to be flowed to high pressure rail 10.For diesel engine, the pressure in high pressure rail 10 is positioned at for example scope of from 1000 to 3000 bar, and for petrol engine in the pressure range of 40 to 400 bar.By high pressure rail 10, utilize unshowned injection equipment to supply fuel in the firing chamber of internal-combustion engine 8.High-pressure service pump 2 is driven by live axle 9 by internal-combustion engine 8.
High-pressure injection system 1 also comprises electronic pre-transfer pump 3, and it has entrance 24 and outlet 25.Electronic pre-transfer pump 3 is driven by motor 7, and is here revolving valve vacuum pump or gear pump 4, and preferably internal gear pump 5, and especially cycloid rotor pump 6.Pre-transfer pump 3 can operate along the contrary throughput direction of both direction, thereby entrance 24 and outlet 25 are interchangeable.On the first throughput direction, fuel is supplied to high-pressure service pump 2 by VHD fuel channel 14, and on second throughput direction contrary with the first throughput direction, by ND fuel channel 13, is supplied to high pressure rail 10.Thereby pre-transfer pump 3 is directly connected with high pressure rail 10 by ND conveyance conduit 13.On the first throughput direction, pre-transfer pump 3 passes through the first fuel suction pipes road 15 from fuel tank 11 draws fuel, and makes these fuel by VHD fuel channel 14, be transported to high-pressure service pump 2 with for example discharge pressure between 3 and 6 bar.On the second throughput direction, pre-transfer pump 3 by the second fuel suction pipes road 16 from fuel tank 11 draws fuel and make these fuel for example be transported to high pressure rail 10 by ND fuel channel 13 breakout pressure between 50 and 150 bar.On VHD fuel channel 14, between high-pressure service pump 2 and the aperture or arm in the second fuel suction pipes road 16, the first safety check 17 is hydraulically arranged in VHD fuel channel 14.Also, between the arm of aperture or ND fuel channel 13, the second safety check 18 is arranged in the first fuel suction pipes road 15.The first and second safety check 17,18 are here configured to for this reason, under the first throughput direction situation of pre-transfer pump 3, fuel is uniquely along the first throughput direction of pre-transfer pump 3, from fuel tank 11 by the first fuel suction pipes road 15 be directed into high-pressure service pump 2 by VHD fuel channel 14, but may not such on contrary throughput direction.In addition, the 3rd safety check 19 is arranged in ND fuel channel 13, and the 4th safety check 20 is arranged in the second fuel suction pipes road 16.The third and fourth safety check 19,20 is here configured on the first throughput direction of pre-transfer pump 3 for this reason, and pre-transfer pump 3 can be from high pressure rail 10 transfer the fuels, and do not have fuel to be directed in fuel tank 11 by the second fuel suction passage 16.
On the second throughput direction of pre-transfer pump 3, fuel is drawn and is not flow through by high-pressure service pump 2 from fuel tank 11 by pre-transfer pump 3 by the second fuel tube 16, then by ND fuel channel 13, directly supplies with high pressure rail 10.On the second throughput direction of pre-transfer pump 3, the second safety check 18 prevention fuel are supplied to again fuel tank 11, the first safety check 17 by the first fuel suction passage 15 and stop fuel from high-pressure service pump 2, to be drawn on the second throughput direction by pre-transfer pump 3.The second and the 4th safety check 18,20 stops high-pressure service pump 2 idle running when pre-transfer pump 3 stops, and fuel flows in fuel tank 11, and the same high-pressure service pump 2 that stops of the first safety check 17 is not only in high-pressure service pump 2 but also idle running when pre-transfer pump 3 stops.
In a word, high-pressure injection system 1 according to the present invention has many principal advantages.Only utilize pre-transfer pump 3 and the safety check 17,18,19 and 20 that on two throughput directions, can move, fuel can technology directly be supplied with high pressure rail simply and inexpensively before internal-combustion engine 8 starts under breakout pressure by pre-transfer pump 3.Thus, while particularly utilizing the motor-startup-stop structure (MSS) of internal-combustion engine 8 to start very rapidly in internal-combustion engine 8 automobiles 23, for example when the first top dead center of internal-combustion engine 8, can light a fire, because before internal-combustion engine 8 starts, form for example lucky enough breakout pressures of at least 50 bar by pre-transfer pump 3 in high pressure rail 10.
Claims (12)
1. for the method for the high-pressure injection system (1) of operation of combustion engine, there are following steps:
-utilize pre-transfer pump (3) transfer the fuel to high-pressure service pump (2),
-utilize high-pressure service pump (2) under high pressure transfer the fuel to high pressure rail (10),
-utilize pre-transfer pump (3) transfer the fuel before internal combustion engine start to arrive described high pressure rail (10),
It is characterized in that,
Described pre-transfer pump (3) moves on two different throughput directions, and on the first throughput direction, fuel is transported to described high-pressure service pump (2); On second throughput direction contrary with the first throughput direction, before internal-combustion engine (8) starts, fuel is transported in described high pressure rail (10).
2. method according to claim 1, is characterized in that, before internal-combustion engine (8) starts, and pre-transfer pump (3) described in described fuel utilization but be directed into described high pressure rail (10) without high-pressure service pump (2).
3. method according to claim 1 and 2, it is characterized in that, described fuel is transported in described high pressure rail (10) by HD fuel channel (12) by high-pressure service pump (2), and described fuel is transported in described high pressure rail (10) by ND fuel channel (13) by described pre-transfer pump (3).
4. according to any one in aforementioned claim or multinomial described method, it is characterized in that, utilize safety check (17,18,19,20) to control fuel and whether by described pre-transfer pump (13), be transported in described high-pressure service pump (2) or in high pressure rail (10).
5. according to any one in aforementioned claim or multinomial described method, it is characterized in that, at least 1s, 5s, 10s or 20s before internal-combustion engine (8) and/or high-pressure service pump (2) start, the pre-transfer pump of fuel utilization (3) is transported to described high pressure rail (10).
6. according to any one in aforementioned claim or multinomial described method, it is characterized in that, pre-transfer pump (3) is transported to described high pressure rail (10) with for example at least 30 bar, 50 bar or 70 the bar especially breakout pressure between 80 and 120 bar described in fuel utilization.
7. according to any one in aforementioned claim or multinomial described method, it is characterized in that, described high-pressure service pump (2) is mechanically driven by internal-combustion engine (8), and/or
Described pre-transfer pump (3) is driven by motor (7).
8. for the high-pressure injection system (1) of internal-combustion engine (8), internal-combustion engine (8) is particularly useful for automobile (23), and described high-pressure injection system (1) comprising:
-high-pressure service pump (2),
-pre-transfer pump (3),
-high pressure rail (10),
It is characterized in that,
Described high-pressure injection system (1) can move according to any one in aforementioned claim or multinomial described method.
9. high-pressure injection system according to claim 8, it is characterized in that, described pre-transfer pump (3) has as entrance (24) and the conduct outlet (25) on the pressure side of drawing side, and described pre-transfer pump (3) can move on two throughput directions different, that be orientated on the contrary, so that described interchangeable as entrance (24) and the conduct outlet (25) on the pressure side of drawing side.
10. high-pressure injection system according to claim 8 or claim 9, it is characterized in that, described pre-transfer pump (3) utilize ND fuel channel (12) and with high pressure rail (10) hydraulic connecting, and utilize VHD fuel channel (14) and with described high-pressure service pump (2) hydraulic connecting.
Any one or multinomial described high-pressure injection system in 11. according to Claim 8 to 10, it is characterized in that, safety check (17, 18, 19, 20) be arranged in fuel channel (13, 14, 15, 16) in, thereby due to described safety check (17, 18, 19, 20) effect, on the first throughput direction of described pre-transfer pump (3), fuel is by described pre-transfer pump (3), especially uniquely, can be transported in described high-pressure service pump (2), and on the second throughput direction, described high-pressure service pump (2) is by fuel, especially uniquely, can be transported in described high pressure rail (10).
In 12. according to Claim 8 to 11, any one or multinomial described high-pressure injection system, is characterized in that, described pre-transfer pump (3) is gear pump (4), and/or
The transfer efficiency of described pre-transfer pump (3) can be controlled and/or be regulated, and/or
Described pre-transfer pump (3) is the electronic pre-transfer pump (3) with motor (7), and/or
Fuel can be by described pre-transfer pump (3) with discharge pressure, for example, between 3 and 6 bar, and breakout pressure, for example between 50 and 150 bar, carry.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011079673A DE102011079673A1 (en) | 2011-07-22 | 2011-07-22 | High-pressure injection |
| DE102011079673.8 | 2011-07-22 | ||
| PCT/EP2012/061123 WO2013013878A1 (en) | 2011-07-22 | 2012-06-12 | High-pressure injection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103688047A true CN103688047A (en) | 2014-03-26 |
| CN103688047B CN103688047B (en) | 2016-09-28 |
Family
ID=46506306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280036165.3A Expired - Fee Related CN103688047B (en) | 2011-07-22 | 2012-06-12 | For running method and the high-pressure injection system of the high-pressure injection system of internal combustion engine |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2734725B1 (en) |
| JP (1) | JP5786094B2 (en) |
| KR (1) | KR101929079B1 (en) |
| CN (1) | CN103688047B (en) |
| DE (1) | DE102011079673A1 (en) |
| RU (1) | RU2603711C2 (en) |
| WO (1) | WO2013013878A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109642525A (en) * | 2016-07-18 | 2019-04-16 | 斯堪尼亚商用车有限公司 | Fuel system for internal combustion engine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE538000C2 (en) * | 2014-05-14 | 2016-02-02 | Scania Cv Ab | Combustion engine fuel system and a method for regulating a fuel system |
| DE102016200232A1 (en) * | 2016-01-12 | 2017-07-13 | Continental Automotive Gmbh | Fuel injection system |
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| DE10356262A1 (en) * | 2003-12-03 | 2005-06-30 | Robert Bosch Gmbh | Radial piston pump, in particular for fuel injection systems |
| CN1714231A (en) * | 2002-11-21 | 2005-12-28 | 洋马株式会社 | Fuel injection pump |
| CN1806118A (en) * | 2003-06-12 | 2006-07-19 | 洋马株式会社 | Fuel injection pump with cold start device |
| CN1806107A (en) * | 2003-06-12 | 2006-07-19 | 洋马株式会社 | Injection control device for fuel injection pump |
| WO2008037524A1 (en) * | 2006-09-28 | 2008-04-03 | Robert Bosch Gmbh | Tappet assembly for a high-pressure pump and high-pressure pump comprising at least one tappet assembly |
| DE102009029573A1 (en) * | 2009-09-18 | 2011-03-24 | Robert Bosch Gmbh | Fuel injection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU44415A1 (en) * | 1934-12-02 | 1935-09-30 | Е.Е. Лонткевич | Fuel pump for internal combustion engines |
| RU2062345C1 (en) * | 1992-06-30 | 1996-06-20 | Центральный научно-исследовательский автомобильный и автомоторный институт | Fuel feed set of internal combustion engine |
| US6604508B2 (en) * | 2001-09-04 | 2003-08-12 | Caterpillar Inc | Volume reducer for pressurizing engine hydraulic system |
| JP2008045536A (en) * | 2006-07-20 | 2008-02-28 | Toyota Industries Corp | Fuel supply system for dme engine |
-
2011
- 2011-07-22 DE DE102011079673A patent/DE102011079673A1/en not_active Withdrawn
-
2012
- 2012-06-12 KR KR1020147001582A patent/KR101929079B1/en active IP Right Grant
- 2012-06-12 RU RU2014106613/06A patent/RU2603711C2/en active
- 2012-06-12 JP JP2014520573A patent/JP5786094B2/en not_active Expired - Fee Related
- 2012-06-12 CN CN201280036165.3A patent/CN103688047B/en not_active Expired - Fee Related
- 2012-06-12 EP EP12733611.3A patent/EP2734725B1/en not_active Not-in-force
- 2012-06-12 WO PCT/EP2012/061123 patent/WO2013013878A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1714231A (en) * | 2002-11-21 | 2005-12-28 | 洋马株式会社 | Fuel injection pump |
| CN1806118A (en) * | 2003-06-12 | 2006-07-19 | 洋马株式会社 | Fuel injection pump with cold start device |
| CN1806107A (en) * | 2003-06-12 | 2006-07-19 | 洋马株式会社 | Injection control device for fuel injection pump |
| DE10356262A1 (en) * | 2003-12-03 | 2005-06-30 | Robert Bosch Gmbh | Radial piston pump, in particular for fuel injection systems |
| WO2008037524A1 (en) * | 2006-09-28 | 2008-04-03 | Robert Bosch Gmbh | Tappet assembly for a high-pressure pump and high-pressure pump comprising at least one tappet assembly |
| DE102009029573A1 (en) * | 2009-09-18 | 2011-03-24 | Robert Bosch Gmbh | Fuel injection system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109642525A (en) * | 2016-07-18 | 2019-04-16 | 斯堪尼亚商用车有限公司 | Fuel system for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101929079B1 (en) | 2018-12-13 |
| EP2734725B1 (en) | 2018-08-08 |
| WO2013013878A1 (en) | 2013-01-31 |
| RU2014106613A (en) | 2015-08-27 |
| EP2734725A1 (en) | 2014-05-28 |
| DE102011079673A1 (en) | 2013-01-24 |
| JP5786094B2 (en) | 2015-09-30 |
| KR20140041778A (en) | 2014-04-04 |
| CN103688047B (en) | 2016-09-28 |
| JP2014521013A (en) | 2014-08-25 |
| RU2603711C2 (en) | 2016-11-27 |
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