CN206234033U - A kind of Design of High Pressure Common Rail Diesel Engine - Google Patents

A kind of Design of High Pressure Common Rail Diesel Engine Download PDF

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Publication number
CN206234033U
CN206234033U CN201621348352.7U CN201621348352U CN206234033U CN 206234033 U CN206234033 U CN 206234033U CN 201621348352 U CN201621348352 U CN 201621348352U CN 206234033 U CN206234033 U CN 206234033U
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China
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pressure
oil
pump
diesel engine
common rail
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练兵
段夫存
陆迪波
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Shanghai Yang Fa Power Co Ltd
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Shanghai Yang Fa Power Co Ltd
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Abstract

The utility model is related to a kind of Design of High Pressure Common Rail Diesel Engine, it is doubled and redoubled compared to double plunger shared-rail oil jetting pump with output oil amount, oil transfer pump output oil mass, fuel metering valve flow and high-pressure pump output oil mass are significantly increased, common rail pressure maximum can reach 2000bar, continuous firing pressure energy is maintained at the technological merit of 1600bar, its structure includes diesel engine cylinder block, is provided with diesel engine cylinder block:Cylinder cap, booster, respirator, air inlet pipe assembly, fan and high pressure co-rail system, high pressure co-rail system include:Mechanical system and electric-control system;Mechanical system includes:High pressure shared-rail oil jetting pump, high-pressure common-rail pipe and fuel injector including the first common rail pipe and the second common rail pipe;When injection pump is assembled on a diesel engine, the mounting plane angulation 45 of injection pump plunger and diesel engine0;Electric-control system includes:ECU and the sensor and actuator that are connected with ECU respectively.The utility model exhaust emissions further meets the standard of state III, is that II liter of state III of diesel engine state provides strong structural support.

Description

A kind of Design of High Pressure Common Rail Diesel Engine
Technical field
The utility model is related to a kind of diesel engine, and in particular to a kind of Design of High Pressure Common Rail Diesel Engine.
Background technology
Common-rail technology refers to high-pressure oil pump, pressure sensor and ECU (Electroni c Control Unit, electronics control Unit processed) composition closed-loop system in, will spray pressure generation and a kind of course of injection fuel system completely separate from each other, High pressure fuel is transported to common feeder line by high-pressure oil pump, precise control is realized by the oil pressure in common feeder line, made High pressure pipe pressure size is unrelated with the rotating speed of engine, can significantly reduce Fuel Injection Mechanism of Diesel Engine pressure with engine speed Change, therefore also just reduce the defect of conventional diesel engine.ECU controls the distributive value of fuel injector, and distributive value size depends on combustion The length of oily rail (common feeder line) pressure and electromagnetism valve opening time.High-pressure common rail electric jet technology refers in high-pressure oil pump, pressure It is in the closed-loop system of force snesor and electronic control unit (ECU) composition, the generation and course of injection of spraying pressure is complete each other A kind of complete separate fuel system.It is that high pressure fuel is transported into common feeder line by high-pressure oil pump, by common feeder line Interior oil pressure realizes precise control, makes high pressure pipe pressure size unrelated with the rotating speed of engine, can significantly reduce diesel oil The degree that machine charge oil pressure changes with engine speed.Wherein, " automatically controlled " refer to injection system by computer control, ECU (is commonly called as electricity Brain) precise control is carried out to the distributive value of each atomizer, oil injection time, can reach the fuel economy and dynamic property of diesel engine To optimal balance, and traditional diesel engine is then that, by Mechanical course, control accuracy cannot be ensured." high pressure " refers to oil spout System pressure is more confidential than conventional diesel to be higher by 3 times, can reach 200MPa (and conventional diesel engine injection pressure 60- 70MPa), the good burning of the big atomization of pressure is abundant, so as to improve dynamic property, is finally reached fuel-efficient purpose." common rail " is to pass through Common feeder line supplies each atomizer simultaneously, and distributive value is accurately calculated by ECU, while providing same to each atomizer The fuel oil of quality, same pressure, operates engine and more smoothes out, so that Optimization of Diesel Engine combination property.And conventional diesel is sent out Motivation is by each oil spout of each cylinder, and distributive value and pressure are inconsistent, and operating is uneven, causes burning unstable, and noise is big, oil consumption It is high.Design of High Pressure Common Rail Diesel Engine generally uses mechanical injection pump in the prior art, and the structure of injection pump is generally by high-pressure pump 1 and tooth Formed after wheel pump 2 is integrated, shown in Fig. 1, the fuel oil in diesel oil tank enters gear pump 2 after being filtered through diesel oil pre-flock device 3, from After the fuel oil that gear pump 2 is pumped out is filtered through fine filter 4, high-pressure pump 1 is further transported to, from the fuel oil that high-pressure pump is pumped out Enter after being sprayed through plunger after high-pressure common-rail pipe 5 is shunted and spray into burning chamber of diesel engine through fuel injector 6;Wherein, ECU is high by obtaining The distributive value of the data message precise control fuel injector of press pump feedback.
Due to the hydraulic oil that pump plunger is periodically exported, diesel engine of the prior art generally only sets a high pressure Common rail pipe, plays a part of buffering pulse, permanent rail pressure and storage hydraulic oil, is that rail pressure is unlikely to drop suddenly after fuel injector sprays oil Low offer structural support.Because diesel engine of the prior art generally sets multiple cylinders, therefore the length of high-pressure common-rail pipe is usual Needs are made thin long, the engine more for cylinder number, and the physical dimension of high-pressure common-rail pipe can be to the structure cloth of Diesel engine Office causes image, and further, domestic high-pressure common-rail pipe of the prior art is long due to physical dimension, is limited by machining accuracy System, it is difficult to bear sufficiently high oil pressure, is also also easy to produce pressure oscillation in use, and then service behaviour to diesel engine is caused not Good image, while also constraining the development of large-scale diesel engine production domesticization;Additionally, the structure of high pressure co-rail system of the prior art Set by injection pump, fuel injector and high-pressure common-rail pipe structure problem image for diesel engine in the prior art by II liter of state III of state Certain image is will also result in, improvement cost required when engine block optimizes is increased.
Therefore it is required to overcome at least one in above-mentioned technological deficiency to turn into one kind to research and develop a Design of High Pressure Common Rail Diesel Engine.
Utility model content
The purpose of this utility model is to provide a kind of Design of High Pressure Common Rail Diesel Engine, and double plunger co-rail oil injection is compared with output oil amount Pump is doubled and redoubled, and oil transfer pump output oil mass, fuel metering valve flow and high-pressure pump output oil mass are significantly increased, and common rail pressure is maximum 2000bar is can reach, continuous firing pressure energy is maintained at the technological merit of 1600bar, and exhaust emissions further meets state III The advantage of standard, is that II liter of state III of diesel engine state provides strong structural support.
The purpose of this utility model is to be achieved through the following technical solutions:The utility model provides a kind of high-pressure common rail bavin Oil machine, including diesel engine cylinder block, are provided with the diesel engine cylinder block:Cylinder cap, booster, respirator, air inlet pipe assembly and wind Fan, is additionally provided with high pressure co-rail system on the diesel engine cylinder block, the high pressure co-rail system includes:Mechanical system and automatically controlled system System;The mechanical system includes:High pressure shared-rail oil jetting pump, high-pressure common-rail pipe and fuel injector;The high-pressure common-rail pipe includes first The working connection of common rail pipe and the second common rail pipe, first common rail pipe and the second common rail pipe is connected in series by common rail oil pipe;Institute State and be provided with high pressure shared-rail oil jetting pump multiple injection pump plungers, the injection pump plunger is common with described first by oil feed line The working connection connection of rail pipe or the second common rail pipe;The setting quantity of the fuel injector is multiple, and the fuel injector passes through hydraulic oil Pipe is connected with the working connection of first common rail pipe or the second common rail pipe;When the injection pump be assemblied in by mounted base it is described When on diesel engine cylinder block, the axis of the injection pump plunger is 45 ° with the angulation of the mounting plane of the diesel engine;It is described automatically controlled System includes:ECU, sensor and actuator;The sensor and actuator are connected with the ECU respectively.
In preferred embodiments, the ECU includes 2 pieces of ECU;The sensor includes:Coolant temperature is passed Sensor, crankshaft rotational speed sensor, admission pressure temperature sensor and engine oil pressure temperature sensor, be arranged on high-pressure common rail spray Cam axle position detecting device and the rail pressure sensor being arranged on the high-pressure common-rail pipe on oil pump;The actuator Including:The fuel metering valve being arranged on the high pressure shared-rail oil jetting pump and the magnetic valve being arranged on the fuel injector.
In preferred embodiments, the high pressure shared-rail oil jetting pump includes:High-pressure pump and oil transfer pump;The oil transfer pump sets Put in one end of the high-pressure pump, the other end of the high-pressure pump is passed with the cam shaft for diesel engine in the gear-box of the diesel engine Dynamic connection;The connectivity port of the oil transfer pump includes:Oil transfer pump fuel low-pressure inlet valve and oil transfer pump fuel low-pressure delivery valve;Institute The connectivity port for stating high-pressure pump includes:High-pressure pump fuel low-pressure inlet valve, high-pressure pump fuel low-pressure delivery valve and high-pressure pump high pressure Delivery valve;The oil transfer pump fuel low-pressure inlet valve is connected by oil transportation oil pipe with the diesel oil tank;On the high-pressure pump Multiple high-pressure pump high pressure delivery valves are provided with, injection pump plunger, the high-pressure pump are provided with each high-pressure pump high pressure delivery valve High pressure delivery valve is connected by the first high-pressure oil pipe with the working connection of first common rail pipe or the second common rail pipe;The high pressure is total to Rail pipe is provided with common rail spill valve, the high-pressure pump fuel low-pressure delivery valve and common rail spill valve by oil spilling pipeline with it is described Diesel oil tank is connected;Oil spilling interface is provided with the fuel injector, the oil spilling interface passes through oil injector oil return pipeline and institute State diesel oil tank connection;The setting quantity of the fuel injector for multiple, the fuel injector by the second high-pressure oil pipe with it is described The working connection connection of the first common rail pipe or the second common rail pipe.
In preferred embodiments, the high pressure co-rail system also includes:Oil water separator and diesel fuel filter;Diesel oil Machine diesel oil tank is entered with the oil water separator, oil transfer pump, diesel fuel filter and high-pressure pump fuel low-pressure successively by oil pipe Fuel tap is connected in series.
In preferred embodiments, the high pressure shared-rail oil jetting pump is provided with the semicircle arcuation that radius is 50-60mm Mounted base;The setting quantity of injection pump plunger is no less than three on the high-pressure pump.
In preferred embodiments, the cam axle position detecting device includes:Fuel injection camshaft phase is passed Sensor and camshaft phase gear;The camshaft phase gear is fixedly installed on high-pressure pump camshaft, and the injection pump is convex The setting position of wheel shaft phase detector matches with the set location of the camshaft phase gear;The camshaft phase tooth Multiple camshaft phase teeth have been uniformly arranged on wheel;When multiple camshaft phase teeth are respectively through the fuel injection camshaft During the search coverage of phase detector, the fuel injection camshaft phase detector feeds back detection signal.
In preferred embodiments, the profile area of the one of camshaft phase tooth on the camshaft phase gear Not in remaining camshaft phase tooth, cylinder positioning tooth is sentenced as on camshaft phase gear;Sentence cylinder positioning tooth triggering institute when described When stating fuel injection camshaft phase detector, the piston of the cylinder of the diesel engine first is located at a cylinder top dead center position;The oil spout Pump camshaft phase sensor feeds back the rotary speed information of the camshaft simultaneously.
In preferred embodiments, the ECU is additionally provided with OBD diagnostics interfaces.
In preferred embodiments, the fuel injector press-fits fuel injector for screw thread;The screw thread press-fits fuel injector to be included: Fuel injector shell, alignment pin is provided with the screw thread pressing type fuel injector;Outer spiral shell is socketed with the middle part of the fuel injector shell Set;The external thread sleeve coordinates with the fuel injector housing slot, and the two ends of the external thread sleeve are respectively by being arranged on the oil spout The shaft shoulder in the middle part of device shell, and spacing with the fixing nut that the fuel injector outer casing screw is connected, the external thread sleeve possess around The free degree of the fuel injector housing axis revolution;The bottom of the external thread sleeve is provided with external screw thread, is set on the fuel injector shell The screw thread put is reverse with the external screw thread;The outer wall of the external thread sleeve is provided with the dogging shoulder or card being adapted with spanner bayonet socket profile Groove.
The beneficial effects of the utility model are:The utility model is effective to solve by providing a kind of Design of High Pressure Common Rail Diesel Engine Is determined and the discharge standard of high-power diesel engine in the prior art is upgraded to the required technical problem for overcoming of state III from state II;Improve Diesel engine afterwards possesses the maximum reachable 2000bar of common rail pressure in terms of high-pressure common rail fuel oil injection, and continuous firing pressure energy is steady It is scheduled on the technical characterstic of 1600bar;After said structure, high pressure shared-rail oil jetting pump is in whole life span and any work Can ensure that fuel delivery meets the technical requirements of diesel engine oil spout under predetermined rail pressure under condition, can fully meet oil mass balance; The utility model is set to double common rail structures by by high-pressure common-rail pipe, can preferably reach the technology of pressure accumulation and distribution fuel oil Effect, can effectively damp fuel pressure fluctuation and limitation fuel oil maximum pressure;Further, double common rail structures can also enter one Step reaches the technique effect that the structure that makes high-pressure common-rail pipe and V-type diesel structure further match, and two are connected in series High-pressure common-rail pipe can divide the both sides for being listed in V-type diesel, save assembly space, be the more rational structure arrangement of diesel engine Structural support is provided;Additionally, after using above-mentioned high pressure co-rail system, the economic performance of fuel oil has obtained further improving, The diesel engine of state II of the mechanical injection pump of use in compared to existing technology, engine fuel consumption rate reduces at least 10g/ Kw.h, power-performance improve 10%, pollutant discharge amount and are greatly reduced;Wherein, the HC and NO in discharging pollutantsX And value by existing 7g/kwh, be reduced to not more than 6.4g/kwh, meet《National phase III non-rice habitats mechanically moving Use exhausted pollutant of diesel engine discharge standard》.Additionally, the utility model is further set to series connection by by high-pressure common-rail pipe Double common rail structures, are ensureing two common rail pipe fuel pressures unanimously and are possessing to bear using two common rail pipes being set up in parallel While more than 1600bar oil pressure high, for the space arrangement of Optimization of Diesel Engine partial structurtes provides strong structural support, position In the oil pressure in two common rail pipes can be distributed uniformly to each fuel injector, cause the burning of diesel oil more complete, diesel oil Organic pollutants discharge capacity is greatly decreased, and then reaches the discharge standard of state III.
Further, the utility model provides strong knot by using above-mentioned electric-control system for diesel engine steady operation Structure supports that ECU can collect the real-time working condition information of coupled each sensor feedback, through data analysis and logic Judge the optimization control parameter for determining to be adapted to engine current working, and these parameters are changed into electric signal output to corresponding Actuator;Additionally, electric-control system can also be according to fuel injection advanced angle, camshaft location corner and crank position corner, in advance Fuel feeding time difference is first set in 2 pieces of ECU;The utility model is used as ECU by using two pieces of ECU, can at most simultaneously 16 fuel injector work of control, to apply the utility model the diesel engine more than 8 cylinders to provide strong structural support;Adopt After the above-mentioned electric-control system of the utility model, the combustion process of cylinder of diesel engine can be with the various working conditions changes residing for diesel engine Realization further agrees with matching, can further improve diesel engine power output, reduces the oil consumption and reduction of diesel engine The discharge of pollutant;When electric-control system detects fault message, fault message and signal an alert can be stored, moreover it is possible to according to event The barrier order of severity makes accurate judgement and automatically cuts off flow paths, reduces the power output of diesel engine, until stopping diesel engine fortune Turn, it is heavily damaged to protect diesel engine to avoid.
Further, the utility model passes through further to improve the oil circuit connection of existing high pressure co-rail system, using double The oil circuit connection of joint-track type, possesses the maximum reachable 2000bar of common rail pressure to reach above-mentioned common rail fuel injection aspect, continues work The technical characterstic for making pressure energy stabilization in 1600bar provides further structural support.Wherein, high pressure shared-rail oil jetting pump by In using being directly driven by cam shaft for diesel engine, the other end of high-pressure pump passes through gear drive with cam shaft for diesel engine in gear-box It is interior to complete engagement, therefore lubricating system can further be improved to oil lubricating, by the lubricant passage way and bavin of high pressure shared-rail oil jetting pump The lubricant passage way of oil machine gear-box is integrated, and the lubricating oil of backflow can be back to gear-box in the form of overflowing, and reach Save the technique effect of lubricating oil return pipeline setting;The setting of fuel metering valve being capable of the coupled Ge Fa roads of comprehensive adjustment Fuel flow, and then reach control high-pressure common-rail pipe fuel pressure technique effect.
Further, the utility model is by further setting oil water separator and diesel fuel filter for diesel engine, to filter The fuel delivery that the mode removed more is cleaned for diesel engine high-pressure co-rail system is provided, for the steady operation of diesel engine is provided effectively Structural support.
Further, the utility model is the semicircle arcuation of 50-60mm by setting radius on high pressure shared-rail oil jetting pump Mounted base, help to reach can convenient adjustment injection pump relative to the setting angle of diesel engine technique effect, And can further obtain and high pressure shared-rail oil jetting pump can be arranged on V-type Design of High Pressure Common Rail Diesel Engine using the assembling form for inclining 45 ° On technique effect, help to make full use of the idle space that caves in of V-type Design of High Pressure Common Rail Diesel Engine, further reduce V-type it is high Pressure common rail diesel engine physical dimension, makes V-type Design of High Pressure Common Rail Diesel Engine its space structure will be more compact;Additionally, the utility model Also set no less than three injection pump plungers by high-pressure pump, be that high pressure shared-rail oil jetting pump realizes output oil mass into multiplication Long, common rail pressure is maximum up to 2000bar, and continuous firing pressure energy stabilization provides further strong structure in 1600bar Support, strong structural support is provided to meet the fuel feeding needs of large-diameter high-power engine of more than cylinder diameter 128mm, it is more suitable Conjunction is used on the diesel engine of high-power large-diameter.
Further, the utility model by high-pressure pump set cam axle position detecting device, by detection The rotation of fuel injection camshaft reaches the technique effect of same detection rotary speed of diesel engine, and engine cam is convex with injection pump There is directly rotation transitive relation in wheel shaft, the test position of cam axle position detecting device is turned from engine cam Moving to fuel injection camshaft helps to obtain the convenient technique effect for improving engine block performance, turns when improvement camshaft is needed During the detection function of dynamic position detecting device, without related improvement diesel engine cylinder block structure, the inside machine of injection pump need to be only adjusted Tool structure can reach same technique effect, help to reduce the improvement R&D costs of diesel engine.
Further, the internal structure that the utility model passes through further improvement cam axle position detecting device, The profile of the one of camshaft phase tooth on camshaft phase gear is set to be different from remaining camshaft phase tooth, is led to Cross fuel injection camshaft phase detector and feed back different position sensing signals, the position of crankshaft of diesel engine can be further provided Confidence ceases, for the working condition and engine maintenance of further convenient monitoring diesel engine provide strong structural support.
Further, the utility model is by further setting OBD diagnostics interfaces for diesel engine, be electric-control system more For accurately Diagnosis of Diesel working condition provides strong structural support;Wherein, can have by OBD diagnostics interfaces The working condition on the detection of effect Ge Fa roads that two pieces of ECU are connected respectively, can be timely by abnormality with the shape of electric signal Formula feeds back to ECU, and the instruction of diesel engine running status is adjusted under the analysis of ECU, and then reaches i.e. When protection diesel engine technique effect.
Further, the utility model is covered by using screw thread pressing type fuel injector by the middle part of fuel injector shell External thread sleeve, and the shaft shoulder by being arranged in the middle part of the fuel injector shell are connect, and the fixed spiral shell being connected with fuel injector outer casing screw It is female spacing to external thread sleeve, the technique effect that external thread sleeve can freely be rotated on fuel injector shell has been reached, it is arranged on external thread sleeve On screw thread can with the oil injector hole in cylinder head formed screw thread coordinate, on fuel injector fixed alignment pin also be arranged on gas Dowel hole on cylinder cap forms gap and coordinates, and can be that the rigging position positioning of fuel injector plays good fixed effect, fills Timing just can reach the technique effect for press-fiting that fuel injector and fuel injector will not rotate with thread bush by rotating external thread sleeve.
Brief description of the drawings
The utility model is described in further detail below according to accompanying drawing.
Fig. 1 is the structure top view of the mesohigh common rail diesel engine of the utility model embodiment 1;
Fig. 2 is the structural representation of the mesohigh common rail system mechanical system part of the utility model embodiment 1;
Fig. 3 is that high pressure co-rail system mechanical system part changes on the mesohigh common rail diesel engine of the utility model embodiment 2 Enter structural representation;
Fig. 4 is that high pressure co-rail system mechanical system part is more on the mesohigh common rail diesel engine of the utility model embodiment 2 Further improved structure schematic diagram;
Fig. 5 is that screw thread press-fits fuel injector structure schematic diagram in the utility model embodiment 2;
Fig. 6 is zoomed-in view at A in Fig. 5;
Fig. 7 is the complete structure schematic diagram of the mesohigh common rail system of the utility model embodiment 3;
Fig. 8 is the convexity wheel shaft rotational position detection device structural representation of the utility model embodiment 4;
Fig. 9 is the convexity wheel shaft rotational position detection device improved structure schematic diagram of the utility model embodiment 4;
Figure 10 is the structure axonometric drawing of V-type diesel high pressure shared-rail oil jetting pump in the utility model embodiment 5.
In figure:
1st, diesel engine cylinder block;2nd, cylinder cap;3rd, booster;4th, respirator;5th, air inlet assembly;6th, fan;7th, common rail oil pipe; 10th, high pressure shared-rail oil jetting pump;11st, injection pump plunger;20th, high-pressure common-rail pipe;21st, the first common rail pipe;22nd, the second common rail pipe;30、 Fuel injector;100th, diesel oil tank;200th, V-type diesel high pressure shared-rail oil jetting pump;210th, V-type diesel high-pressure pump;211st, it is high Press pump fuel low-pressure inlet valve;212nd, high-pressure pump fuel low-pressure delivery valve;213rd, high-pressure pump high pressure delivery valve;214th, V-type diesel oil Machine injection pump plunger;215th, the first high-pressure oil pipe;220th, V-type diesel oil transfer pump;230th, mounted base;221st, oil transfer pump fuel oil Low pressure inlet valve;222nd, oil transfer pump fuel low-pressure delivery valve;300th, V-type diesel high-pressure common-rail pipe;301st, oil spilling pipeline;310、 The common rail pipe of V-type diesel first;320th, the common rail pipe of V-type diesel second;330th, common rail oil pipe;340th, common rail spill valve;400、 Screw thread press-fits fuel injector;410th, oil spilling interface;411st, oil injector oil return pipeline;420th, the second high-pressure oil pipe;430th, outside fuel injector Shell;431st, the shaft shoulder;432nd, fixing nut;440th, alignment pin;450th, external thread sleeve;451st, dogging shoulder;500th, power supply;600th, automatically controlled list Unit;710th, fuel metering valve;720th, cam axle position detecting device;721st, fuel injection camshaft phase detector;722、 Camshaft phase gear;723rd, camshaft phase tooth;724th, cylinder positioning tooth is sentenced;730th, rail pressure sensor;740th, coolant temperature Sensor;750th, engine oil pressure temperature sensor;760th, admission pressure temperature sensor;770th, crankshaft rotational speed sensor;780、 OBD diagnostics interfaces;800th, oil water separator;900th, diesel fuel filter.
Specific embodiment
Embodiment 1:
Shown in Fig. 1 and Fig. 2, the utility model provides a kind of Design of High Pressure Common Rail Diesel Engine, including diesel engine cylinder block 1, the bavin It is provided with oil machine cylinder body 1:Cylinder cap 2, booster 3, respirator 4, air inlet pipe assembly 5 and fan 6;On the diesel engine cylinder block 1 High pressure co-rail system is additionally provided with, the high pressure co-rail system includes:Mechanical system and electric-control system.Shown in Fig. 2, the machinery System includes:High pressure shared-rail oil jetting pump 10, high-pressure common-rail pipe 20 and fuel injector 30;The high-pressure common-rail pipe 20 includes the first common rail The common rail pipe 22 of pipe 21 and second, the working connection of the common rail pipe 22 of first common rail pipe 21 and second is connected by common rail oil pipe 7 and connected Connect;Multiple injection pump plungers 11 are provided with the high pressure shared-rail oil jetting pump 10, the high-pressure pump high pressure delivery valve passes through fuel feeding Pipeline is connected with the working connection of the common rail pipe 22 of first common rail pipe 21 or second;The setting quantity of the fuel injector 30 is many Individual, the fuel injector 30 is connected by high-pressure oil pipe with the working connection of the common rail pipe 22 of first common rail pipe 21 or second;Work as institute State injection pump to be assemblied in when on the diesel engine cylinder block 1 by mounted base, the axis of the injection pump plunger and the diesel oil The angulation of the mounting plane of machine is 45 °;The electric-control system includes:ECU, sensor and actuator;The sensor and Actuator is connected with the ECU respectively.
It should be noted that because the structure of electric-control system involved in the present embodiment is prior art, its concrete structure Details major technique improvement also in non-the present embodiment, therefore related to electric-control system in the present embodiment CONSTRUCTED SPECIFICATION is no longer Further illustrate and repeat.
When above-mentioned Design of High Pressure Common Rail Diesel Engine works, sprayed by the multiple injection pump plungers 11 set on high pressure shared-rail oil jetting pump 10 The high pressure fuel of injection flows into the working connection of the first common rail pipe 21 and the second common rail pipe 22 through oil pipe, in the first common rail pipe 21 and the The oil pressure high of stable equilibrium is formed in the working connection of two common rail pipes 22, high pressure fuel is through the first common rail pipe 21 and the second common rail pipe 22 Fuel injector 30 is flowed into by single oil pipe respectively after shunting, and then is reached for the technology of the uniform voltage stabilizing fuel feeding of each cylinder of diesel engine Effect.The above-mentioned Design of High Pressure Common Rail Diesel Engine of the utility model is particularly suitable for V-type diesel, and the first common rail pipe 21 and second is common Rail pipe 22 can be respectively used to the cylinder fuel feeding for being arranged on V-type diesel both sides, help to reach shortening existing diesel high pressure The technique effect of common rail length of tube, and then can more reasonably using the external structure space of V-type diesel, Optimization of Diesel Engine Physical dimension.
It should be further stated that in the present embodiment, the structure of high pressure shared-rail oil jetting pump 10 and fuel injector 30 is existing Technology, therefore its detailed structural information is not illustrated further and repeated in detail herein.Further, since diesel engine removes high-pressure common rail system The structure and annexation of remaining associated components beyond system are prior art, by high pressure co-rail system on diesel engine cylinder block Set location be also prior art, also non-primary object of the present utility model, therefore also do not illustrate further herein and go to live in the household of one's in-laws on getting married State.
The utility model is solved high-power bavin in the prior art by providing a kind of Design of High Pressure Common Rail Diesel Engine, effectively The technical problem that the discharge standard of oil machine overcomes needed for upgrading to state III from state II;Diesel engine after improvement is in high-pressure common rail fuel oil It is maximum up to 2000bar, technical characterstic of the continuous firing pressure energy stabilization in 1600bar that injection aspect possesses common rail pressure;Adopt After said structure, high pressure shared-rail oil jetting pump can ensure that fuel delivery meets bavin in whole life span and under any operating mode The technical requirements of oil machine oil spout under predetermined rail pressure, can fully meet oil mass balance;The utility model is by by high-pressure common rail Pipe is set to double common rail structures, can preferably reach the technique effect of pressure accumulation and distribution fuel oil, can effectively damp fuel oil Pressure oscillation and limitation fuel oil maximum pressure;Further, double common rail structures can also be further up to making the knot of high-pressure common-rail pipe The technique effect that structure and V-type diesel structure further match, two high-pressure common-rail pipes being connected in series can divide and be listed in V The both sides of diesel engine, save assembly space, for the more rational structure arrangement of diesel engine provides structural support;Additionally, using After above-mentioned high pressure co-rail system, the economic performance of fuel oil has obtained further improving, compared to existing technology in use machine The diesel engine of state II of tool formula injection pump, engine fuel consumption rate reduces at least 10g/kw.h, power-performance and improves 10%, pollution Thing discharge capacity is greatly reduced;Wherein, the HC and NO in discharging pollutantsXAnd value by existing 7g/kwh, reduce To not more than 6.4g/kwh, meet《National phase III non-rice habitats mechanically moving is discharged with exhausted pollutant of diesel engine and marked It is accurate》.Additionally, the utility model is further by the way that high-pressure common-rail pipe to be set to double common rail structures of series connection, using two side by side The common rail pipe of setting ensure that two common rail pipe fuel pressures are consistent and possess bear more than 1600bar oil pressure high while, For the space arrangement of Optimization of Diesel Engine partial structurtes provides strong structural support, the oil pressure in two common rail pipes can In uniform distribution to each fuel injector, cause the burning of diesel oil more complete, diesel engine pollutant discharge amount is greatly decreased, and enters And reach the discharge standard of state III.
Embodiment 2:
Be further applied to high pressure co-rail system on V-type diesel on the basis of above-described embodiment by the present embodiment, figure Shown in 3, the mechanical system part of the high pressure co-rail system employed in the present embodiment includes:V-type diesel high-pressure common rail oil injection Pump 200, V-type diesel high-pressure common-rail pipe 300 and screw thread press-fit fuel injector 400;The V-type diesel high pressure shared-rail oil jetting pump 200 include:V-type diesel high-pressure pump 210 and V-type diesel oil transfer pump 220;The V-type diesel oil transfer pump 220 is arranged on institute State one end of V-type diesel high-pressure pump 210, the other end of the V-type diesel high-pressure pump 210 and the tooth of the V-type diesel Cam shaft for diesel engine drive connection in roller box;The connectivity port of the V-type diesel oil transfer pump 220 includes:Oil transfer pump fuel oil Low pressure inlet valve 221 and oil transfer pump fuel low-pressure delivery valve 222;The connectivity port of the V-type diesel high-pressure pump 210 includes: High-pressure pump fuel low-pressure inlet valve 211, high-pressure pump fuel low-pressure delivery valve 212 and high-pressure pump high pressure delivery valve 213;The oil transportation Pump fuel low-pressure inlet valve 221 is connected by oil transportation oil pipe with diesel oil tank 100;The high-pressure common-rail pipe 300 includes:V-type The first common rail pipe of diesel engine 310 and the second common rail pipe of V-type diesel 320, the first common rail pipe of the V-type diesel 310 and V-type bavin The working connection of the second common rail pipe of oil machine 320 is connected in series by common rail oil pipe 330;Set on the V-type diesel high-pressure pump 210 There are multiple high-pressure pump high pressure delivery valves 213, V-type diesel injection pump plunger is provided with each high-pressure pump high pressure delivery valve 213 214, the V-type diesel injection pump plunger 214 passes through the first high-pressure oil pipe 215 and the first common rail pipe of the V-type diesel 310 Or the working connection connection of the second common rail pipe of V-type diesel 320;The V-type diesel high-pressure common-rail pipe 300 is provided with common rail oil spilling Valve 340, the high-pressure pump fuel low-pressure delivery valve 212 and common rail spill valve 340 pass through oil spilling pipeline 301 and the diesel engine Fuel tank 100 is connected;The screw thread press-fits oil spilling interface 410 is provided with fuel injector 400, and the oil spilling interface 410 passes through oil spout Device return line 411 is connected with the diesel oil tank 100;The setting quantity that the screw thread press-fits fuel injector 400 is multiple, institute State screw thread and press-fit fuel injector 400 by the second high-pressure oil pipe 420 and first common rail pipe of V diesel engines 310 or V-type diesel oil The working connection connection of the second common rail pipe of machine 320.
The oil circuit that the utility model passes through further to improve existing high pressure co-rail system is connected, using the oil of double joint-track types Road connects, and possesses the maximum reachable 2000bar of common rail pressure to reach above-mentioned common rail fuel injection aspect, and continuous firing pressure energy is steady The technical characterstic for being scheduled on 1600bar provides further structural support.
Preferably, shown in Fig. 4, in an optimal technical scheme of the present embodiment, the high pressure co-rail system also includes: Oil water separator 800 and diesel fuel filter 900;Diesel oil tank 100 by oil pipe successively with the oil water separator 800, defeated Oil pump 220, diesel fuel filter 900 and high-pressure pump fuel low-pressure inlet valve 211 are connected in series.The utility model is by being diesel engine Oil water separator and diesel fuel filter are further set, are provided as diesel engine high-pressure co-rail system in the way of filtering and more cleaned Fuel delivery, for the steady operation of diesel engine provides strong structural support.
Preferably, as shown in Figure 5 and Figure 6, in an optimal technical scheme of the present embodiment, the screw thread press-fits oil spout Device 400 includes:Fuel injector shell 430, alignment pin 440 is provided with the screw thread pressing type fuel injector;The fuel injector shell Middle part be socketed with external thread sleeve 450;The external thread sleeve 450 coordinates with the gap of fuel injector shell 430, and the two of the external thread sleeve End is respectively by the shaft shoulder 431 being arranged in the middle part of the fuel injector shell, and the fixation being connected with the fuel injector outer casing screw Nut 432 is spacing, and the external thread sleeve 450 possesses the free degree around the axis of fuel injector shell 430 revolution;The external thread sleeve Bottom be provided with external screw thread, on the fuel injector shell set screw thread it is reverse with the external screw thread;The outer wall of the external thread sleeve It is provided with the dogging shoulder or draw-in groove 451 being adapted with spanner bayonet socket profile.
Preferably, in an optimal technical scheme of the present embodiment, perpendicular to the fuel injector housing axis, the card The sectional view of shoulder or draw-in groove is the one kind in regular polygon.
Preferably, in an optimal technical scheme of the present embodiment, the screw thread pressing type fuel injector is provided with oil-feed Mouth and oil return opening.
The utility model is socketed external thread sleeve by using screw thread pressing type fuel injector by the middle part of fuel injector shell, And the shaft shoulder by being arranged in the middle part of the fuel injector shell, and the fixing nut being connected with fuel injector outer casing screw is to external thread sleeve It is spacing, the technique effect that external thread sleeve can freely be rotated on fuel injector shell has been reached, it is arranged on the screw thread energy on external thread sleeve Enough oil injector holes with cylinder head form screw thread cooperation, on fuel injector fixed alignment pin also be arranged on determining in cylinder head Position pin-and-hole forms gap and coordinates, and can be that the rigging position positioning of fuel injector plays good fixed effect, by rotation during assembling Turning external thread sleeve just can reach the technique effect for press-fiting that fuel injector and fuel injector will not rotate with thread bush.
Embodiment 3:
As shown in fig. 7, the present embodiment is on the basis of above-described embodiment, the ECU 600 includes 2 pieces of ECU;It is described Sensor includes:Cooling-water temperature transmitter 740, crankshaft rotational speed sensor 770, admission pressure temperature sensor 760 and machine oil Pressure-temperature sensor 750, the cam axle position detecting device 720 being arranged on high pressure shared-rail oil jetting pump and it is arranged on institute State the rail pressure sensor 730 on high-pressure common-rail pipe;The actuator includes:It is arranged on the fuel oil on the high pressure shared-rail oil jetting pump Metering valve 710 and the fuel injector magnetic system 31 being arranged on the fuel injector 30.Wherein, the sensor and actuator respectively with The ECU 600 is connected;Power supply 500 is connected with the ECU 600.
It should be noted that because diesel engine electric control unit of the prior art includes power interface, it is inevitable in use Corresponding power module can be connected, therefore the major technique improvement set in not the present embodiment on power supply 500, also non-solution The certainly necessary architectural feature needed for the present embodiment technical problem to be solved, therefore the technical information related to power supply 500 is herein Do not illustrate further and repeat.
The utility model provides strong structural support for diesel engine steady operation by using above-mentioned electric-control system, electricity Control unit can collect the real-time working condition information of coupled each sensor feedback, determine through data analysis and logic judgment suitable The optimization control parameter of engine current working is closed, and these parameters are changed into electric signal output to corresponding actuator;This Outward, electric-control system can also be according to fuel injection advanced angle, camshaft location corner and crank position corner, in advance in 2 pieces of ECU Middle setting fuel feeding time difference;The utility model is used as ECU by using two pieces of ECU, being capable of at most 16 sprays of control simultaneously Oily device work, to apply the utility model the diesel engine more than 8 cylinders to provide strong structural support;It is new using this practicality After the above-mentioned electric-control system of type, the combustion process of cylinder of diesel engine can be realized more entering one with the various working conditions changes residing for diesel engine What is walked agrees with matching, can further improve diesel engine power output, reduces the oil consumption of diesel engine and the row of reduction pollutant Put;When electric-control system detects fault message, fault message and signal an alert can be stored, moreover it is possible to according to fault severity level Make accurate judgement and automatically cut off flow paths, reduce the power output of diesel engine, until stop diesel engine operating, to protect bavin Oil machine avoids heavily damaged.
Preferably, as shown in fig. 7, in an optimal technical scheme of the present embodiment, the ECU is also further It is provided with OBD diagnostics interfaces 780.
The utility model by further setting OBD diagnostics interfaces for diesel engine, be electric-control system more accurately Diagnosis of Diesel working condition provides strong structural support;Wherein, OBD diagnostics interfaces can effectively detect difference The working condition on the Ge Fa roads that two pieces of ECU are connected, timely can as electronic signals feed back to abnormality automatically controlled Unit, and the instruction of diesel engine running status is adjusted under the analysis of ECU, and then reach protection diesel engine immediately Technique effect.
Embodiment 4:
Shown in Fig. 8, on the basis of above-described embodiment, the cam axle position detecting device 720 is wrapped the present embodiment Include:Fuel injection camshaft phase detector 721 and camshaft phase gear 722;The camshaft phase gear 722 is fixedly installed On high-pressure pump camshaft, the setting position of the fuel injection camshaft phase detector and the camshaft phase gear Set location matches;Multiple camshaft phase teeth have been uniformly arranged on the camshaft phase gear;When multiple cams Axle phase tooth respectively through the fuel injection camshaft phase detector search coverage when, the fuel injection camshaft phase is passed Sensor feeds back detection signal.
The utility model by high-pressure pump set cam axle position detecting device, by detecting injection pump cam The rotation of axle reaches the technique effect of same detection rotary speed of diesel engine, and engine cam exists straight with fuel injection camshaft The rotation transitive relation for connecing, injection pump is transferred to by the test position of cam axle position detecting device from engine cam Camshaft helps to obtain the convenient technique effect for improving engine block performance, is detected when improvement cam axle position is needed During the detection function of device, without related improvement diesel engine cylinder block structure, the internal mechanical structure that need to only adjust injection pump can Same technique effect is reached, helps to reduce the improvement R&D costs of diesel engine.
Preferably, as shown in figure 9, in an optimal technical scheme of the present embodiment, on the camshaft phase gear One of camshaft phase tooth shape differentiation in remaining camshaft phase tooth 723, as on camshaft phase gear Sentence cylinder positioning tooth 724;When it is described sentence cylinder positioning tooth 724 and trigger the fuel injection camshaft phase detector 721 when, the diesel oil The piston of the cylinder of machine first is located at a cylinder top dead center position;The fuel injection camshaft phase detector feeds back the camshaft simultaneously Rotary speed information.
Further, the internal structure that the utility model passes through further improvement cam axle position detecting device, The profile of the one of camshaft phase tooth on camshaft phase gear is set to be different from remaining camshaft phase tooth, is led to Cross fuel injection camshaft phase detector and feed back different position sensing signals, the position of crankshaft of diesel engine can be further provided Confidence ceases, for the working condition and engine maintenance of further convenient monitoring diesel engine provide strong structural support.
Embodiment 5:
The present embodiment on the basis of above-described embodiment, the axis of no-feathering of selected V-type diesel high pressure shared-rail oil jetting pump As shown in Figure 10, the high pressure shared-rail oil jetting pump is provided with the mounted base 230 of the semicircle arcuation that radius is 50-60mm to mapping; The setting quantity of injection pump plunger is no less than three on the high-pressure pump.
The utility model is the assembling base of the semicircle arcuation of 50-60mm by setting radius on high pressure shared-rail oil jetting pump Seat, helping to reach can adjust technique effect of the injection pump relative to the setting angle of diesel engine by convenient, and can enter one Step obtains the technology that high pressure shared-rail oil jetting pump can be arranged on using the assembling form for inclining 45 ° on V-type Design of High Pressure Common Rail Diesel Engine Effect, helps to make full use of the idle space that caves in of V-type Design of High Pressure Common Rail Diesel Engine, further reduces V-type high-pressure common rail bavin Oil machine physical dimension, makes V-type Design of High Pressure Common Rail Diesel Engine its space structure will be more compact;Additionally, the utility model also by Set on high-pressure pump and be no less than three injection pump plungers, be that high pressure shared-rail oil jetting pump realizes that output oil mass is doubled and redoubled, common rail pressure Power is maximum up to 2000bar, and continuous firing pressure energy stabilization provides further strong structural support in 1600bar, is full The fuel feeding of the large-diameter high-power engine of sufficient more than cylinder diameter 128mm needs to provide strong structural support, is more suitable in big work( Used on the diesel engine of rate large-diameter.
The utility model is not limited to above-mentioned preferred forms, and anyone can draw under enlightenment of the present utility model Other various forms of products, however, make any change in its shape or structure, it is every with same as the present application or phase Approximate technical scheme, all falls within protection domain of the present utility model.

Claims (9)

1. a kind of Design of High Pressure Common Rail Diesel Engine, including diesel engine cylinder block, is provided with the diesel engine cylinder block:Cylinder cap, booster, exhale Haustorium, air inlet pipe assembly and fan, it is characterised in that high pressure co-rail system, the height are additionally provided with the diesel engine cylinder block Pressure common rail system includes:Mechanical system and electric-control system;
The mechanical system includes:High pressure shared-rail oil jetting pump, high-pressure common-rail pipe and fuel injector;The high-pressure common-rail pipe includes first The working connection of common rail pipe and the second common rail pipe, first common rail pipe and the second common rail pipe is connected in series by common rail oil pipe;Institute State and be provided with high pressure shared-rail oil jetting pump multiple injection pump plungers, the injection pump plunger is common with described first by oil feed line The working connection connection of rail pipe or the second common rail pipe;The setting quantity of the fuel injector is multiple, and the fuel injector passes through hydraulic oil Pipe is connected with the working connection of first common rail pipe or the second common rail pipe;When the injection pump be assemblied in by mounted base it is described When on diesel engine cylinder block, the axis of the injection pump plunger is 45 ° with the angulation of the mounting plane of the diesel engine;
The electric-control system includes:ECU, sensor and actuator;The sensor and actuator are automatically controlled with described respectively Unit is connected.
2. Design of High Pressure Common Rail Diesel Engine according to claim 1, it is characterised in that:The ECU includes 2 pieces of ECU;Institute Stating sensor includes:Cooling-water temperature transmitter, crankshaft rotational speed sensor, admission pressure temperature sensor and engine oil pressure temperature Sensor, the cam axle position detecting device being arranged on high pressure shared-rail oil jetting pump and it is arranged on the high-pressure common-rail pipe Rail pressure sensor;The actuator includes:The fuel metering valve that is arranged on the high pressure shared-rail oil jetting pump and it is arranged on institute State the magnetic valve on fuel injector.
3. Design of High Pressure Common Rail Diesel Engine according to claim 1, it is characterised in that:The high pressure shared-rail oil jetting pump includes:It is high Press pump and oil transfer pump;The oil transfer pump is arranged on one end of the high-pressure pump, the other end of the high-pressure pump and the diesel engine Gear-box in cam shaft for diesel engine drive connection;The connectivity port of the oil transfer pump includes:Oil transfer pump fuel low-pressure oil-feed Valve and oil transfer pump fuel low-pressure delivery valve;The connectivity port of the high-pressure pump includes:High-pressure pump fuel low-pressure inlet valve, high-pressure pump Fuel low-pressure delivery valve and high-pressure pump high pressure delivery valve;The oil transfer pump fuel low-pressure inlet valve passes through oil transportation oil pipe and the bavin Oil machine fuel tank is connected;Multiple high-pressure pump high pressure delivery valves are provided with the high-pressure pump, are set on each high-pressure pump high pressure delivery valve Injection pump plunger is equipped with, the high-pressure pump high pressure delivery valve passes through the first high-pressure oil pipe and first common rail pipe or the second common rail The working connection connection of pipe;The high-pressure common-rail pipe is provided with common rail spill valve, the high-pressure pump fuel low-pressure delivery valve and common rail Spill valve is connected by oil spilling pipeline with the diesel oil tank;Oil spilling interface, the oil spilling are provided with the fuel injector Interface is connected by oil injector oil return pipeline with the diesel oil tank;The setting quantity of the fuel injector is multiple, the spray Oily device is connected by the second high-pressure oil pipe with the working connection of first common rail pipe or the second common rail pipe.
4. Design of High Pressure Common Rail Diesel Engine according to claim 3, it is characterised in that:The high pressure co-rail system also includes:Oil Separator and diesel fuel filter;Diesel oil of diesel engine sump by oil pipe successively with the oil water separator, oil transfer pump, diesel oil Cleaner and high-pressure pump fuel low-pressure inlet valve are connected in series.
5. Design of High Pressure Common Rail Diesel Engine according to claim 4, it is characterised in that:The high pressure shared-rail oil jetting pump is provided with half Footpath is the mounted base of the semicircle arcuation of 50-60mm;The setting quantity of injection pump plunger is no less than three on the high-pressure pump.
6. Design of High Pressure Common Rail Diesel Engine according to claim 5, it is characterised in that:The cam axle position detecting device Including:Fuel injection camshaft phase detector and camshaft phase gear;The camshaft phase gear is fixedly installed on high pressure On pump camshaft, the set location of the setting position of the fuel injection camshaft phase detector and the camshaft phase gear Match;Multiple camshaft phase teeth have been uniformly arranged on the camshaft phase gear;When multiple camshaft phase teeth Respectively through the fuel injection camshaft phase detector search coverage when, fuel injection camshaft phase detector feedback Detection signal.
7. Design of High Pressure Common Rail Diesel Engine according to claim 6, it is characterised in that:On the camshaft phase gear wherein One shape differentiation of camshaft phase tooth is positioned in remaining camshaft phase tooth as the cylinder of sentencing on camshaft phase gear Tooth;When it is described sentence cylinder positioning tooth trigger the fuel injection camshaft phase detector when, the cylinder of the diesel engine first piston position In a cylinder top dead center position;The fuel injection camshaft phase detector feeds back the rotary speed information of the camshaft simultaneously.
8. Design of High Pressure Common Rail Diesel Engine according to claim 2, it is characterised in that:The ECU is additionally provided with OBD events Barrier diagnosis interface.
9. Design of High Pressure Common Rail Diesel Engine according to claim 1, it is characterised in that:The fuel injector press-fits oil spout for screw thread Device;The screw thread press-fits fuel injector to be included:Fuel injector shell, alignment pin is provided with the screw thread pressing type fuel injector;It is described External thread sleeve is socketed with the middle part of fuel injector shell;The external thread sleeve coordinates with the fuel injector housing slot, the external thread sleeve Two ends are respectively by the shaft shoulder being arranged in the middle part of the fuel injector shell, and the fixed spiral shell being connected with the fuel injector outer casing screw Female spacing, the external thread sleeve possesses the free degree around fuel injector housing axis revolution;The bottom of the external thread sleeve is provided with External screw thread, the screw thread set on the fuel injector shell is reverse with the external screw thread;The outer wall of the external thread sleeve is provided with and pulls Dogging shoulder or draw-in groove that hand bayonet socket profile is adapted.
CN201621348352.7U 2016-12-09 2016-12-09 A kind of Design of High Pressure Common Rail Diesel Engine Active CN206234033U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107387285A (en) * 2017-09-04 2017-11-24 河南柴油机重工有限责任公司 A kind of electronic control system device for detecting sealability
CN109184998A (en) * 2018-11-09 2019-01-11 广西玉柴机器股份有限公司 The high pressure co-rail system of V-type multi-cylinder diesel engine
CN109184997A (en) * 2018-11-07 2019-01-11 河南柴油机重工有限责任公司 A kind of safety guard of electronic control system peculiar to vessel
CN109372670A (en) * 2018-12-21 2019-02-22 潍柴动力股份有限公司 A kind of integrated form pipeline and a kind of engine
CN110427713A (en) * 2019-08-07 2019-11-08 中国北方发动机研究所(天津) A kind of matching process of engine high-pressure pump
CN113123890A (en) * 2021-05-07 2021-07-16 华中科技大学 double-ECU high-pressure common rail fuel control system and method for highly-intensified diesel engine

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107387285A (en) * 2017-09-04 2017-11-24 河南柴油机重工有限责任公司 A kind of electronic control system device for detecting sealability
CN109184997A (en) * 2018-11-07 2019-01-11 河南柴油机重工有限责任公司 A kind of safety guard of electronic control system peculiar to vessel
CN109184997B (en) * 2018-11-07 2024-01-30 河南柴油机重工有限责任公司 Safety protection device of marine electronic control high-pressure common rail system
CN109184998A (en) * 2018-11-09 2019-01-11 广西玉柴机器股份有限公司 The high pressure co-rail system of V-type multi-cylinder diesel engine
CN109184998B (en) * 2018-11-09 2024-02-20 广西玉柴机器股份有限公司 High-pressure common rail system of V-type multi-cylinder diesel engine
CN109372670A (en) * 2018-12-21 2019-02-22 潍柴动力股份有限公司 A kind of integrated form pipeline and a kind of engine
CN109372670B (en) * 2018-12-21 2023-09-19 潍柴动力股份有限公司 Integrated pipeline and engine
CN110427713A (en) * 2019-08-07 2019-11-08 中国北方发动机研究所(天津) A kind of matching process of engine high-pressure pump
CN110427713B (en) * 2019-08-07 2023-04-07 中国北方发动机研究所(天津) Matching method of high-pressure pump for engine
CN113123890A (en) * 2021-05-07 2021-07-16 华中科技大学 double-ECU high-pressure common rail fuel control system and method for highly-intensified diesel engine

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