CN113217167A

CN113217167A - Intelligent piston cooling nozzle assembly

Info

Publication number: CN113217167A
Application number: CN202110709105.4A
Authority: CN
Inventors: 增宪任; 左家想
Original assignee: Jiujiang Huirui Machinery Co ltd
Current assignee: Jiujiang Huirui Machinery Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-08-06

Abstract

The invention is suitable for the technical field of engine pistons, and provides an intelligent piston cooling nozzle assembly which comprises a communication pipeline arranged between an oil filter and an oil pump, wherein the communication pipeline is provided with an oil inlet and a plurality of oil outlets; through inside temperature sensor that sets up in the intercommunication pipeline, pressure sensor and combine to set up the detonation sensor on the outer wall when burning, ECU is big more according to machine oil pressure, the valve plug is opened big more, the temperature is high more, the valve plug is opened also big more and the detonation signal is stronger, increase the valve plug more and open the size, strengthen piston cooling's logic, carry out the control of electric current size to solenoid, thereby to the telescopic link, the distance that the rack removed is controlled, the removal distance control of pinion rack is being rotated the ring gear, the ring gear drives the valve plug in the oil-out and goes up and down, the realization is opened the control of size to the oil outlet, realize the control of piston cooling effect, intelligent control, thereby save machine oil pump flow, and oil consumption is reduced.

Description

Intelligent piston cooling nozzle assembly

Technical Field

The invention belongs to the technical field of engine pistons, and particularly relates to an intelligent piston cooling nozzle assembly.

Background

With the stricter and stricter regulations on fuel consumption and emission of the whole automobile in various countries, various automobile companies in the world invest heavy money for improving the performance of engines. Most main engine plants for reducing the oil consumption of the whole automobile adopt the technologies of direct injection in cylinders, turbocharging and the like, on the other hand, the weight and the size of the engine are reduced, the effective mass of the whole automobile is reduced, the two aspects cause the continuous increase of the power per liter of the engine, and the power per liter of the gasoline engine is increased to 55-80kW from the past 35-50 kW/L. The heat load of the engine is directly influenced by the power-rise of the engine, the power-rise also means the increase of the heat load, the working temperature of a combustion chamber and a piston is increased, the gasoline engine can generate knocking due to the excessively high piston temperature, and in order to reduce the working temperature of the piston, most of the supercharged engines adopt a piston cooling nozzle method to reduce the piston temperature so as to meet the requirement of the excessively high heat load increase of the engine.

The existing piston cooling nozzle is mechanically controlled by using engine oil pressure, namely, a steel ball is sealed at an oil inlet port through the pretightening force of a built-in spring, when the engine oil pressure is greater than the pretightening force of the spring, the steel ball compresses the spring, lubricating oil is sprayed to a piston through the cooling nozzle, and the temperature of the lubricating oil is lower than that of the piston, so that the effect of cooling the piston is achieved.

Because the piston cooling and the engine oil pressure of the engine are not in strict corresponding relation, when the engine is started at a low temperature or has a high rotating speed and a small load, the temperature of the piston is not high, and the cooling is not needed.

Disclosure of Invention

The invention provides an intelligent piston cooling nozzle assembly, which aims to solve the problems that because piston cooling and engine oil pressure are not in a strict corresponding relation, when an engine is started at a low temperature or has a high rotating speed and a low load, the temperature of a piston is not high, and cooling is not needed, but because the engine oil pressure is greater than the working pressure for opening a piston cooling nozzle, the piston is overcooled, the mechanical loss power of a piston assembly is increased, and the oil consumption is increased.

The invention is realized in such a way that an intelligent piston cooling nozzle assembly comprises a communication pipeline arranged between an oil filter and an oil pump, an oil inlet and a plurality of oil outlets are arranged on the communicating pipeline, each oil outlet is provided with a nozzle arranged in the corresponding combustion chamber, used for cooling the piston in the combustion chamber, a valve plug used for controlling the opening and the closing of the oil outlet is arranged at each oil outlet in a threaded manner, the outer wall of the valve plug is provided with a thread groove with an increasingly larger notch from top to bottom, a plurality of valve plugs are controlled by the connecting part in a unified way, the connecting part is controlled by an electromagnetic coil arranged at one end of the communicating pipeline to move for a distance, the electromagnetic coil is connected with an ECU controlling the on-off of the electromagnetic coil, and the ECU is electrically connected with a temperature sensor and a pressure sensor which are arranged in the communication pipeline and a knock sensor arranged on the outer wall of the combustion chamber.

Preferably, the connecting part comprises a rack fixed with the telescopic rod in the electromagnetic coil, the side surfaces of the rack are respectively provided with a toothed ring which is in one-to-one correspondence with the valve plugs, and the toothed rings are fixed in the communicating pipeline through bearings and fixing rods.

Preferably, the valve plug divide into screw thread section and lower screw thread section, go up the screw thread section with connect through bearing rotation between the lower screw thread section, go up the screw thread section with the inside looks spiro union of ring gear, be used for the valve plug goes up and down, lower screw thread section with the part thread looks spiro union of oil-out is used for right the oil output of oil-out is controlled.

Preferably, the diameter of the upper thread section is smaller than that of the lower thread section, a limiting hole is formed in the upper thread section, and the upper thread section is in sleeve joint with a limiting rod arranged in the communicating pipeline through the limiting hole to slide.

Preferably, the lower threaded section is matched with the oil outlet, the diameter of the lower threaded section is the same as the inner diameter of the oil outlet, and the oil outlet is provided with partial screw threads which are matched with the upper notch of the thread groove of the lower threaded section.

Preferably, the communication pipeline is installed on the side surface of the engine cylinder body through bolts, and the number of the nozzles on the communication pipeline is set to be the same as the number of the cylinder combustion chambers of the engine cylinder body.

Preferably, the ECU controls whether the valve plug opens the oil outlet and how much the oil outlet is opened according to the oil pressure sent by the pressure sensor and the temperature sent by the temperature sensor.

Preferably, the ECU further controls how much the valve plug opens the oil outlet according to a knock signal sent by the knock sensor.

Preferably, a spring used for pulling the telescopic rod to return is further arranged between the telescopic rod and the electromagnetic coil.

Compared with the prior art, the invention has the beneficial effects that: according to the intelligent piston cooling nozzle assembly, the temperature sensor and the pressure sensor are arranged in the communication pipeline, and the detonation sensor is combined with the detonation sensor arranged on the outer wall during combustion, the ECU controls the current magnitude of the electromagnetic coil according to the fact that the larger the engine oil pressure is, the larger the valve plug is opened, the higher the temperature is, the larger the valve plug is opened, the stronger the detonation signal is, the larger the valve plug is opened, the logic of piston cooling is enhanced, and the control of the current magnitude is performed on the electromagnetic coil, so that the moving distance of the telescopic rod and the rack is controlled, the moving distance of the toothed plate controls the rotation of the toothed ring, and the toothed ring drives the valve plug in the oil outlet to lift, so that the control of the opening magnitude of the oil outlet is realized, the control of the piston.

Drawings

FIG. 1 is a schematic flow chart of the operation of the present invention;

FIG. 2 is a schematic view of a cross-sectional front view of a communicating pipe according to the present invention;

FIG. 3 is a schematic top sectional view of the communication pipe according to the present invention;

in the figure: 1. a communicating pipeline; 11. an oil inlet; 12. an oil outlet; 121. screw teeth; 13. a nozzle; 14. a limiting rod; 2. a valve plug; 21. an upper thread section; 211. a limiting hole; 22. a lower thread section; 221. a thread groove; 3. a connecting portion; 31. a rack; 32. a toothed ring; 33. fixing the rod; 4. an electromagnetic coil; 41. a telescopic rod; 42. a spring; 5. an ECU; 6. a temperature sensor; 7. a pressure sensor; 8. a knock sensor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, the present invention provides a technical solution:

an intelligent piston cooling nozzle 13 assembly comprises a communication pipeline 1 arranged between an oil filter and an oil pump, wherein the communication pipeline 1 is provided with an oil inlet 11 and a plurality of oil outlets 12, each oil outlet 12 is provided with a nozzle 13 arranged in a corresponding combustion chamber, the piston is used for cooling the piston in the combustion chamber, each oil outlet 12 is provided with a valve plug 2 for opening and closing the valve plug, the outer wall of the valve plug 2 is provided with a thread groove 221 with an increasingly large notch from top to bottom, the valve plugs 2 are uniformly controlled by a connecting part 3, the connecting part 3 controls the moving distance of the connecting part by an electromagnetic coil 4 arranged at one end of the communication pipeline 1, the electromagnetic coil 4 is connected with an ECU5 for controlling the on-off of the electromagnetic coil 4, and the ECU5 is electrically connected with a temperature sensor 6 and a pressure sensor 7 which are arranged in the communication pipeline 1 and a knock sensor 8 arranged on the outer wall of the combustion chamber.

Through set up temperature sensor 6 inside communicating pipe 1, pressure sensor 7 and combine to set up knock sensor 8 on the outer wall when burning, ECU5 is big more according to machine oil pressure, valve plug 2 opens big more, the temperature is high more, valve plug 2 opens also big more and the knock signal is stronger, increase valve plug 2 more and open the size, strengthen piston cooling's logic, carry out the control of electric current size to solenoid 4, thereby to telescopic link 41, the distance that rack 31 removed is controlled, rack 31's displacement is controlling toothed ring 32 and is rotating, toothed ring 32 drives the valve plug 2 lift in the oil-out 12, realize that oil-out 12 opens the control of size, realize the control of piston cooling effect.

The connecting portion 3 includes a rack 31 fixed to the telescopic rod 41 in the electromagnetic coil 4, a ring gear 32 corresponding to each valve plug 2 is provided on a side surface of the rack 31, and the ring gear 32 is fixed inside the communication pipe 1 by a bearing and a fixing rod 33.

The rack 31 moves under the action of the outward movement of the telescopic rod 41, the movement of the rack 31 drives each gear ring 32 to rotate, and the rotation of the gear rings 32 drives the upper thread section 21 of the valve plug 2 to move upwards, so that the whole valve plug 2 moves upwards to be separated from the oil outlet 12. Instead of providing one oil inlet 11 for each oil outlet 12, a basis is laid for further individual control of each oil outlet 12.

The valve plug 2 is divided into an upper thread section 21 and a lower thread section 22, the upper thread section 21 and the lower thread section 22 are rotatably connected through a bearing, the upper thread section 21 is in threaded connection with the inside of the gear ring 32 and used for lifting the valve plug 2, and the lower thread section 22 is in threaded connection with a part of threads 121 of the oil outlet 12 and used for controlling the oil outlet amount of the oil outlet 12.

The upper thread section 21 of the valve plug 2 is used for driving the whole valve plug 2 to lift under the action of the gear ring 32, so that the oil outlet 12 is opened and closed, the thread groove 221 is formed in the outer wall of the lower thread section 22, the oil outlet 12 is opened in size under the matching of part of the thread 121 of the oil outlet 12, the thread 121 of the oil outlet 12 is not arranged in a whole circle, and the interference to the operation of the thread groove 221 in the lower thread section 22 is avoided.

The diameter of the upper thread section 21 is smaller than that of the lower thread section 22, a limiting hole 211 is formed in the upper thread section 21, and the upper thread section 21 is in sleeve joint with a limiting rod 14 arranged in the communicating pipeline 1 through the limiting hole 211 to slide.

Go up screw thread section 21 and be carried on spacingly by gag lever post 14 for only can carry out the operation of going up and down, and the ring gear 32 of establishing through the outer wall cover drives screw thread section 21 and goes up and down, and then drives whole valve plug 2 and goes up and down, realizes controlling valve plug 2 oil-out 12 and opens the control of having laid.

The lower threaded section 22 is matched with the oil outlet 12, the diameter of the lower threaded section 22 is the same as the inner diameter of the oil outlet 12, a part of screw threads 121 are arranged on the oil outlet 12, and the screw threads 121 are matched with the upper notch of the thread groove 221 of the lower threaded section 22.

Lower screw thread section 22 and oil-out 12 looks adaptation to lower screw thread section 22's whole whereabouts can block up to oil-out 12 and close, and oil-out 12 and valve plug 2 screwed connected mode have guaranteed that valve plug 2 is sealed to oil-out 12. The thread groove 221 of the lower thread section 22 of the valve plug 2 is larger and larger from top to bottom in the diameter of the notch, so that the opening of the oil outlet 12 is larger and larger along with the rising of the valve plug 2, more engine oil is discharged, and the accurate control of the engine oil flowing out of the oil outlet 12 is realized. The thread 121 of the oil outlet 12 is arranged to rotate the lower threaded section 22 due to rising, so as to assist in rotation, and then is adapted to the thread groove 221 of the lower threaded section 22 in the retracted state, so as to seal the oil outlet 12.

The communication pipeline 1 is installed on the side surface of the engine cylinder body through bolts, and the number of the nozzles 13 on the communication pipeline 1 is set to be the same as the number of the cylinder combustion chambers of the engine cylinder body.

The main characteristic of the communicating pipeline 1 of the invention is that it is provided with an independent oil circuit system, the independent oil circuit ensures that each valve plug 2 controls the flow rate of the corresponding nozzle 13, the communicating pipeline 1 can be installed on the engine cylinder, the communicating pipeline 1 is arranged between the oil filter and the oil pump, because the oil sprayed by the nozzle 13 does not need to be filtered by the oil filter, the oil circuit arrangement mode can reduce the pressure drop of the oil pump. The nozzle 13 is also different from the existing piston cooling nozzle 13, and has a simple structure, the existing piston cooling nozzle 13 is not needed, a complex structure is also needed to be arranged in the nozzle, the pressure of the engine oil is also not needed to be adjusted, and only a certain spraying direction is needed (namely, the opening of the nozzle 13 is aligned with the position of the piston).

The ECU5 controls whether the valve plug 2 opens the outlet port 12 and how much the outlet port 12 is opened, based on the oil pressure sent by the pressure sensor 7 and the temperature sent by the temperature sensor 6. The ECU5 further controls how much the valve plug 2 is open to the oil outlet 12 based on the knock signal sent by the knock sensor 8.

Specifically, the method comprises the following steps: when the engine runs, the ECU5 carries out logical operation according to the temperature information sent by the temperature sensor 6 and the oil pressure sent by the pressure sensor 7, wherein when two conditions of temperature and pressure are met, as long as one condition is met, the valve plug 2 is sent out to open; if the conditions are met, the opening size of the valve plug 2 is adjusted according to the feedback signal of the knock sensor 8, if the knock signal is strong, the opening size of the valve plug 2 is increased, piston cooling is enhanced until the ignition advance angle of the engine reaches the optimal torque ignition angle, and knocking is not generated. Wherein: the greater the oil pressure, the greater the valve plug 2 opening, and the higher the temperature, the greater the valve plug 2 opening.

A spring 42 for pulling the telescopic rod 41 to return is also arranged between the telescopic rod 41 and the electromagnetic coil 4.

Solenoid 4 winds on soft iron, when having electric current to pass through, can produce the repulsion to telescopic link 41, promotes telescopic link 41 and outwards removes, but under the spring 42 effect of reverse pullback, reaches the balance of spring 42 power and electromagnetic force, realizes the accurate control to telescopic link 41 removal length, and then controls the height that goes up and down of valve plug 2 and the size that oil-out 12 opened.

The working principle and the using process of the invention are as follows: the electromagnetic coil 4 is wound on soft iron, when current passes through the electromagnetic coil, repulsive force can be generated on the telescopic rod 41 to push the telescopic rod 41 to move outwards, the telescopic rod 41 moves outwards to drive the rack 31 to move, the rack 31 moves to drive each gear ring 32 to rotate, the gear ring 32 rotates to drive the upper threaded section 21 of the valve plug 2 to move upwards, so that the whole valve plug 2 moves upwards to be separated from the oil outlet 12, in the rising process of the valve plug 2, the thread groove 221 of the lower threaded section 22 rotates under the action of the thread 121 of the oil outlet 12, so that the valve plug slowly rotates upwards, the oil outlet 12 is slowly opened, the communication pipeline 1 is communicated with the nozzle 13, because the oil inlet 11 is communicated with the engine oil duct, engine oil flows through the oil inlet 11 and enters the communication pipeline 1, and is discharged outwards along each opened oil outlet 12 channel in the communication pipeline 1, high-pressure engine oil enters the nozzle 13 from the oil outlet 12 to be sprayed out, the piston in each combustion chamber is cooled. Wherein ECU5 sends different electric current size according to the signal that obtains from pressure sensor 7 and temperature sensor 6 and knock sensor 8, and control solenoid 4 suction size controls telescopic link 41 and moves the distance to control rack 31 displacement, the height that the ring gear 32 number of turns and valve plug 2 go up and down, thereby valve plug 2 is to the opening of oil-out 12 how much, thereby the flow of control machine oil, just so can reach the machine oil flow control who spouts to the piston.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an intelligent piston cooling nozzle assembly which characterized in that: the oil cooling device comprises a communication pipeline (1) arranged between an oil filter and an oil pump, wherein the communication pipeline (1) is provided with an oil inlet (11) and a plurality of oil outlets (12), each oil outlet (12) is provided with a nozzle (13) arranged in a corresponding combustion chamber and used for cooling a piston in the combustion chamber, the oil outlet (12) is provided with a valve plug (2) used for controlling the opening and closing of the valve plug (2) in a threaded manner, a threaded groove (221) with an increasingly large notch from top to bottom is formed in the outer wall of the valve plug (2), the valve plugs (2) are uniformly controlled by a connecting part (3), the connecting part (3) is controlled by an electromagnetic coil (4) arranged at one end of the communication pipeline (1) to control the moving distance of the electromagnetic coil (4), the electromagnetic coil (4) is connected with an ECU (5) used for controlling the opening and closing of the electromagnetic coil, and the ECU (5) is connected with a temperature sensor (6) and a temperature sensor (12) arranged in the communication pipeline (1), The pressure sensor (7) and a knock sensor (8) arranged on the outer wall of the combustion chamber are electrically connected.

2. An intelligent piston cooling nozzle assembly as in claim 1, wherein: connecting portion (3) include with telescopic link (41) fixed rack (31) mutually in solenoid (4), the side of rack (31) is provided with respectively with each the valve plug (2) carries out the ring gear (32) of one-to-one, ring gear (32) are fixed through bearing and dead lever (33) inside communicating pipe way (1).

3. An intelligent piston cooling nozzle assembly as in claim 2, wherein: valve plug (2) divide into upper thread section (21) and lower screw thread section (22), upper thread section (21) with rotate through the bearing between lower screw thread section (22) and connect, upper thread section (21) with the inside looks spiro union of ring gear (32) is used for valve plug (2) goes up and down, lower screw thread section (22) with partial spiral shell tooth (121) looks spiro union of oil-out (12) is used for right the oil output of oil-out (12) is controlled.

4. An intelligent piston cooling nozzle assembly as in claim 3, wherein: the diameter of the upper threaded section (21) is smaller than that of the lower threaded section (22), a limiting hole (211) is formed in the upper threaded section (21), and the upper threaded section (21) is in sleeve joint sliding with a limiting rod (14) arranged in the communicating pipeline (1) through the limiting hole (211).

5. An intelligent piston cooling nozzle assembly as in claim 3, wherein: the lower threaded section (22) is matched with the oil outlet (12), the diameter of the lower threaded section (22) is the same as the inner diameter of the oil outlet (12), a part of screw threads (121) are arranged on the oil outlet (12), and the screw threads (121) are matched with the upper notch of a screw groove (221) of the lower threaded section (22).

6. An intelligent piston cooling nozzle assembly as in claim 1, wherein: the connecting pipeline (1) is installed on the side face of the engine cylinder body through bolts, and the number of the nozzles (13) on the connecting pipeline (1) is equal to the number of the cylinder body combustion chambers of the engine cylinder body.

7. An intelligent piston cooling nozzle assembly as in claim 1, wherein: and the ECU (5) controls whether the valve plug (2) is opened or not and how much the oil outlet (12) is opened according to the engine oil pressure sent by the pressure sensor (7) and the temperature sent by the temperature sensor (6).

8. An intelligent piston cooling nozzle assembly as in claim 7, wherein: the ECU (5) further controls the opening of the valve plug (2) to the oil outlet (12) according to a knock signal sent by the knock sensor (8).

9. An intelligent piston cooling nozzle assembly as in claim 2, wherein: and a spring (42) for pulling the telescopic rod (41) to return is also arranged between the telescopic rod (41) and the electromagnetic coil (4).