CN111911324B

CN111911324B - Method for reducing fuel pressure fluctuation of high-pressure oil pipe of electronic injection diesel engine

Info

Publication number: CN111911324B
Application number: CN202010680647.9A
Authority: CN
Inventors: 石庆国; 周学升; 郭微微; 王守宝
Original assignee: Shandong Jiaotong University
Current assignee: Shandong Jiaotong University
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2022-03-22
Anticipated expiration: 2040-07-15
Also published as: CN114483400A; CN111911324A

Abstract

The invention relates to the technical field of high-pressure oil pipes of diesel engines, and discloses a method for reducing fuel pressure fluctuations of high-pressure oil pipes of electronic fuel injection diesel engines. Outside the body of the high-pressure oil pipe; S2. Check the counterweight: when the corresponding structure is installed, test the performance of the device; S3. Secondary installation: When it is detected that the weight is not suitable, change the number of individuals in the shock-absorbing mechanism. S4, Use: After the secondary installation is appropriate, the device can be used; S5, direct use: when the weight is detected, the installed shock absorbing mechanism can be directly used after it is detected that the weight is suitable. The method for reducing the fuel pressure fluctuation of the high-pressure fuel pipe of an EFI diesel engine can reduce the fluctuation generated by the high-pressure fuel pipe body itself, thereby achieving the function of protecting the high-pressure fuel pipe body. It is relatively simple to install and disassemble.

Description

Method for reducing fuel pressure fluctuation of high-pressure oil pipe of electronic injection diesel engine

Technical Field

The invention relates to the technical field of diesel engine high-pressure oil pipes, in particular to a method for reducing fuel pressure fluctuation of a high-pressure oil pipe of an electronic injection diesel engine.

Background

The most important use of diesel is in diesel engines for vehicles and ships. Compared with gasoline, diesel oil has high energy density and low fuel consumption. Diesel fuel has low energy consumption, so some small cars and even high performance cars are changed into diesel fuel.

Because diesel fuel has a relatively high density, the diesel fuel generally has a relatively small fraction of its used components, and most of the energy is lost in other forms. When the diesel engine works, the fuel injection nozzle injects fuel, the pressure is high, so that a high-pressure fuel pipe in fuel delivery generates high-frequency vibration, and meanwhile, the fuel pipe can bear large oil pressure, which is an important factor for damaging the high-pressure fuel pipe.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a method for reducing the fuel pressure fluctuation of a high-pressure oil pipe of an electronic injection diesel engine, which has the advantages of reducing the vibration generated when the high-pressure oil pipe is used, being convenient to install and disassemble, prolonging the service life of the oil pipe and the like, and solves the problems in the background art.

(II) technical scheme

In order to achieve the purposes of reducing the vibration generated when the high-pressure oil pipe is used, facilitating the installation and the disassembly and prolonging the service life of the oil pipe, the invention provides the following technical scheme: a method for reducing fuel pressure fluctuation of a high-pressure oil pipe of an electronic injection diesel engine comprises the following steps:

s1, fixing and installing the device: sleeving the damping mechanism outside the high-pressure oil pipe body in a specific installation mode;

s2, detecting a counterweight: when the corresponding structure is installed, the device is started, the performance of the device is detected, whether the added damping mechanism is not proper in weight is detected, if the added damping mechanism is too heavy, a certain pressure is generated on the high-pressure oil pipe body, the falling of the high-pressure oil pipe body is accelerated, and otherwise, the damping effect cannot meet the requirement;

s3, secondary installation: when the weight is detected to be inappropriate, the number of individuals in the damping mechanism is changed again, the damping quantity to be damped is different due to different power of different diesel engines, the damping mechanism comprises a plurality of fixing frames, and meanwhile, spacing shaft sleeves are arranged between the fixing frames;

s4, use: after the secondary installation is proper, the device can be used;

s5, use directly: when detecting the balance weight, the weight of the installed damping mechanism is detected to be suitable, and the damping mechanism can be directly used.

Preferably, the damping mechanism comprises a fixing frame, a through hole, a fixing block, a cylinder, a spring, a clamping block, a fixing seat, a mounting hole, a fixing rod and a spacing shaft sleeve.

Preferably, the fixing bases are located at two ends of the high-pressure oil pipe body and fixedly clamped with the high-pressure oil pipe body, one of the fixing bases is fixedly connected with a plurality of fixing rods, the fixing rods are far away from the center of the fixing bases, a plurality of fixing frames are clamped on the fixing rods, a spacing shaft sleeve is installed between every two adjacent fixing frames, and the spacing shaft sleeve is fixedly clamped with the fixing rods.

Preferably, the mount leads to circular type structure in being, the inside fixedly connected with a plurality of fixed block of mount, fixed block other end fixed mounting has the cylinder, cylinder outside fixed mounting has the spring, spring one end and fixed block fixed connection.

Preferably, the other end of the cylinder and the other end of the spring are fixedly connected with a fixture block, the fixture block is of a semicircular structure, and an inner groove of the fixture block is attached to the outer portion of the high-pressure oil pipe body.

Preferably, the fixing frame is provided with a plurality of through holes, the number and the positions of the through holes correspond to those of the fixing rods on the fixing base, and the through holes are movably clamped with the fixing rods.

(III) advantageous effects

Compared with the prior art, the invention has the following beneficial effects:

1. the method for reducing the fuel pressure fluctuation of the high-pressure oil pipe of the electronic injection diesel engine comprises the steps that when a machine works, the oil pipe can generate strong fluctuation when an oil injection nozzle injects diesel oil, the fluctuation generated by a high-pressure oil pipe body can be relieved under the action of a spring and an air cylinder in a damping mechanism, a reverse force can be applied to the spring and the air cylinder, the reverse force is transmitted to the high-pressure oil pipe body through a clamping block, the fluctuation generated by the high-pressure oil pipe body can be further weakened, the effect of protecting the high-pressure oil pipe body is further achieved, and after the fluctuation is weakened, the service life of the high-pressure oil pipe body can be correspondingly increased progressively when the high-pressure oil pipe body is used.

2. The method for reducing the fuel pressure fluctuation of the high-pressure oil pipe of the electronic injection diesel engine can further adjust the number of structures with main effects in the damping mechanism according to the difference of models and power of the diesel engine, and the device is suitable for different diesel engines through the targeted arrangement, is wide in application range, is relatively simple in installation and disassembly, does not need excessive manual operation, and further saves manpower.

Drawings

FIG. 1 is a schematic diagram of a frame structure for use in the apparatus of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of the fixing frame of the present invention;

FIG. 4 is a schematic view of FIG. 2 at A in accordance with the present invention;

FIG. 5 is a schematic view of the invention at B of FIG. 2.

In the figure: 1. a high pressure oil pipe body; 2. a damping mechanism; 3. a fixed mount; 4. a through hole; 5. a fixed block; 6. a cylinder; 7. a spring; 8. a clamping block; 9. a fixed seat; 10. mounting holes; 11. fixing the rod; 12. And a spacing shaft sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1-5, a method for reducing fuel pressure fluctuation in a high-pressure fuel line of an electronic fuel injection diesel engine includes the following steps: s1, fixing and installing the device: the damping mechanism 2 is sleeved outside the high-pressure oil pipe body 1 through a specific installation mode, the damping mechanism 2 comprises fixing frames 3, through holes 4, fixing blocks 5, air cylinders 6, springs 7, clamping blocks 8, fixing seats 9, installation holes 10, fixing rods 11 and spacing shaft sleeves 12, the fixing seats 9 are positioned at two ends of the high-pressure oil pipe body 1 and fixedly clamped with the high-pressure oil pipe body 1, one fixing seat 9 is fixedly connected with a plurality of fixing rods 11, the fixing rods 11 are far away from the central position of the fixing seat 9, the fixing seats 11 are clamped with a plurality of fixing frames 3, the spacing shaft sleeves 12 are arranged between two adjacent fixing frames 3, the spacing shaft sleeves 12 are fixedly clamped with the fixing rods 11, the fixing frames 3 are of a through circular structure, the fixing blocks 5 are fixedly connected inside the fixing frames 3, and the air cylinders 6 are fixedly arranged at the other ends of the fixing blocks 5, a spring 7 is fixedly installed on the outer side of the air cylinder 6, one end of the spring 7 is fixedly connected with the fixed block 5, the other ends of the air cylinder 6 and the spring 7 are fixedly connected with a fixture block 8, the fixture block 8 is of a semicircular structure, an inner groove of the fixture block is attached to the outer portion of the high-pressure oil pipe body 1, a plurality of through holes 4 are formed in the fixed frame 3, the number and the positions of the through holes 4 correspond to those of fixed rods 11 on the fixed seat 9, and the through holes 4 are movably clamped with the fixed rods 11;

s2, detecting a counterweight: when the corresponding structure is installed, the device is started, the performance of the device is detected, whether the added damping mechanism 2 is not proper in weight is detected, if the added damping mechanism 2 is too heavy, a certain pressure is generated on the high-pressure oil pipe body 1, the falling of the high-pressure oil pipe body 1 is accelerated, and otherwise, the damping effect cannot meet the requirement;

s3, secondary installation: when the weight is detected to be inappropriate, the number of individuals in the damping mechanism 2 is changed again, the damping quantity to be damped is different due to different power of different diesel engines, the damping mechanism 2 comprises a plurality of fixing frames 3, meanwhile, spacing shaft sleeves 12 are arranged between the fixing frames 3, if the weight of the added counterweight is too high, the number of the fixing frames 3 and the internal structures thereof is reduced, the number of the spacing shaft sleeves 12 is increased, the overall counterweight is reduced, otherwise, the number of the fixing frames 3 and the internal structures thereof is increased, and the number of the spacing shaft sleeves 12 is reduced;

s4, use: after the secondary installation is proper, the device can be used;

s5, use directly: when detecting the counterweight, the weight of the installed damping mechanism 2 is detected to be proper, and the counterweight can be directly used.

Example two

Based on the first embodiment, as shown in fig. 1-5, the fixing base 9 is provided with a plurality of

mounting holes

10, 10.

The working principle is as follows: when the device is used, one fixing seat 9 with a fixing rod 11 is firstly clamped on a high-pressure oil pipe body 1, the quantity of the fixing frames 3 or the spacing shaft sleeves 12 is automatically selected according to the model and the power of the diesel engine, if the power of the diesel engine is larger, a plurality of fixing frames 3 can be arranged, otherwise a plurality of spacing shaft sleeves 12 are arranged, under the condition that the quantity of the fixing frames 3 is larger, the spacing shaft sleeves 12 do not need to be ensured between the two fixing frames 3, the fixing frames 3 and the fixing frames 3 can be repeatedly arranged, when the fixing frames 3 and the spacing shaft sleeves 12 are arranged, the through holes 4 on the fixing frames 3 are sleeved on the fixing rods 11, the spacing shaft sleeves 12 can be directly sleeved on the fixing rods 11, after the fixing seats are arranged, the other fixing seat 9 is sleeved on the high-pressure oil pipe body 1, and the fixing seat 9 is fixedly clamped with the fixing rods 11, meanwhile, the fixing seat 9 is provided with a plurality of mounting holes 10 which can be mounted through bolts or screws, so that the damping mechanism 2 can be firmly fit outside the high-pressure oil pipe body 1, and meanwhile, the fixture block 8 is ensured to firmly clamp the high-pressure oil pipe body 1;

after the high-pressure oil pipe is installed, when a machine works, an oil pipe can generate strong fluctuation when an oil nozzle sprays diesel oil, the fluctuation generated by the high-pressure oil pipe body 1 can be relieved under the action of the spring 7 and the cylinder 6 in the damping mechanism 2, a reverse force can be applied to the spring 7 and the cylinder 6, the reverse force is transmitted to the high-pressure oil pipe body 1 through the fixture block 8, the fluctuation generated by the high-pressure oil pipe body 1 can be weakened, the effect of protecting the high-pressure oil pipe body 1 is achieved, and after the fluctuation is weakened, the service life of the high-pressure oil pipe body 1 can be correspondingly increased progressively when the high-pressure oil pipe body 1 is used;

the device can be according to the difference of diesel engine model and power, and then adjusts the quantity of its main effect's structure among damper 2, and through this kind of corresponding setting for the device is applicable to different diesel engines moreover, and application scope is wide, and when installing and dismantling, all relatively simple does not need too much manual operation, and then has saved the manpower.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A method for reducing fuel pressure fluctuation of a high-pressure oil pipe of an electronic injection diesel engine is characterized by comprising the following steps: the method comprises the following steps:

s1, fixing and installing the device: sleeving the damping mechanism (2) outside the high-pressure oil pipe body (1) in a specific installation mode;

s2, detecting a counterweight: when a corresponding structure is installed, the device is started, the performance of the device is detected, whether the added damping mechanism (2) is not proper in weight is detected, if the added damping mechanism is too heavy, certain pressure is generated on the high-pressure oil pipe body (1), the falling of the high-pressure oil pipe body (1) is accelerated, and otherwise, the damping effect cannot meet the requirement;

s3, secondary installation: when the weight is detected to be improper, the number of individuals in the damping mechanism (2) is changed again, the amount of damping to be carried out is different due to different power of different diesel engines, the damping mechanism (2) comprises a plurality of fixing frames (3), meanwhile, spacing shaft sleeves (12) are arranged between the fixing frames (3), if the weight of the added counterweight is too high, the number of the fixing frames (3) and the internal structures is reduced, the number of the spacing shaft sleeves (12) is increased, the overall counterweight is reduced, otherwise, the number of the fixing frames (3) and the internal structures is increased, and the number of the spacing shaft sleeves (12) is reduced;

s4, use: after the secondary installation is proper, the device can be used;

s5, use directly: when detecting the balance weight, the weight of the installed damping mechanism (2) is detected to be proper, and the damping mechanism can be directly used.

2. The method for attenuating pressure fluctuations in fuel in a high pressure fuel line of an electronic fuel injection diesel engine as claimed in claim 1, wherein: damping mechanism (2) include mount (3), through-hole (4), fixed block (5), cylinder (6), spring (7), fixture block (8), fixing base (9), mounting hole (10), dead lever (11) and interval axle sleeve (12) are constituteed.

3. The method for attenuating pressure fluctuations in fuel in a high pressure fuel line of an electronic fuel injection diesel engine as claimed in claim 2, wherein: fixing base (9) are located the both ends of high pressure fuel pipe body (1) to with high pressure fuel pipe body (1) fixed joint, one of them fixedly connected with a plurality of dead lever (11) on fixing base (9), the central point that fixing base (9) were kept away from in dead lever (11) puts, the joint has a plurality of mount (3) on dead lever (11), installs interval axle sleeve (12) between two adjacent mounts (3), interval axle sleeve (12) and dead lever (11) fixed joint.

4. The method for attenuating pressure fluctuations in fuel in a high pressure fuel line of an electronic fuel injection diesel engine as claimed in claim 2, wherein: mount (3) are well logical circular type structure, mount (3) inside fixedly connected with a plurality of fixed block (5), fixed block (5) other end fixed mounting has cylinder (6), cylinder (6) outside fixed mounting has spring (7), spring (7) one end and fixed block (5) fixed connection.

5. The method for attenuating pressure fluctuations in fuel in a high pressure fuel line of an electronic fuel injection diesel engine as claimed in claim 2, wherein: the other end of the cylinder (6) and the other end of the spring (7) are fixedly connected with a fixture block (8), the fixture block (8) is of a semicircular structure, and an inner groove of the fixture block is attached to the outer portion of the high-pressure oil pipe body (1).

6. The method for attenuating pressure fluctuations in fuel in a high pressure fuel line of an electronic fuel injection diesel engine as claimed in claim 2, wherein: a plurality of through holes (4) are formed in the fixing frame (3), the number and the positions of the through holes (4) correspond to those of the fixing rods (11) on the fixing seat (9), and the through holes (4) are movably connected with the fixing rods (11) in a clamping mode.