CN206309461U - Piston cooling nozzle component - Google Patents

Abstract

The utility model discloses a kind of piston cooling nozzle component, including valve body and atomizer, axial oil valve pocket is provided with the valve body, the fuel tap chamber of the valve body axially connects setting with atomizer；The atomizer of piston cooling nozzle is set with valve body, extra installing component need not be set, and overall structure is simple, low cost of manufacture, small volume, light weight, the installing space not only taken up is small, and piston cooling nozzle part will not be interfered with crankshaft-link rod in engine, security is higher, compactedness is good after installation, and stability is high, and intensity is high.

Description

Piston Cooling Jet Assembly

technical field

The utility model relates to a piston cooling nozzle, in particular to an integrated piston cooling nozzle assembly.

Background technique

In order to prevent the gasoline engine from knocking due to the high temperature of the combustion chamber and piston when the engine is working, the designer designed a piston cooling nozzle to reduce the temperature of the piston. The piston cooling nozzle is mainly controlled by the oil pressure, that is, the steel ball is sealed at the oil inlet port through the built-in spring preload. When the oil pressure is greater than the spring preload, the steel ball compresses the spring, and the lubricating oil sprays the piston through the cooling nozzle. , Since the temperature of the lubricating oil is lower than that of the piston, it has the effect of cooling the piston. The piston cooling nozzle is connected to the oil passage in the valve body through the oil inlet end of the oil injection pipe radially penetrating through the installation hole of the oil injection pipe arranged on the collar, that is to say, the oil injection pipe is arranged radially along the circumference of the valve body. Moreover, installation parts need to be installed on the valve body, resulting in a complex overall structure of the piston cooling nozzle, high manufacturing cost, large volume, and heavy weight, which not only occupies a large installation space, but also interferes with the crankshaft and connecting rod in the engine. Potential safety hazard, and poor compactness after installation. Poor stability.

Utility model content

In view of this, the purpose of this utility model is to provide a press-fit piston cooling nozzle assembly, the overall structure of the piston cooling nozzle is simple, the manufacturing cost is low, the volume is small, the weight is light, not only the installation space occupied is small, the piston cooling The nozzle part will not interfere with the crankshaft and connecting rod in the engine, which has higher safety, good compactness after installation, high stability and high strength.

The press-fit piston cooling nozzle assembly of the utility model includes a valve body and an oil spray nozzle, an oil valve cavity is arranged axially in the valve body, and the oil valve cavity of the valve body is arranged in axial communication with the oil spray nozzle;

Further, the opening at the lower end of the valve body forms an oil inlet connected to the oil valve chamber, a ball is arranged in the oil valve chamber, a pressure regulating spring is arranged in the oil passage of the fuel injection nozzle, and the pressure regulating spring ball Compressed at the oil inlet of the valve body in a way to generate axial preload;

Further, the fuel injector is socketed and fastened to the valve body, and the cross-sectional diameter of the oil channel inlet of the fuel injector is set smaller than the cross-sectional diameter of the oil valve cavity;

Further, the diameter of the outlet section of the oil passage of the fuel injector is smaller than the diameter of the inlet section of the oil passage;

Further, the press-fit piston cooling nozzle assembly is arranged under the main bearing seat of the cylinder block and is transitionally fitted with the cylinder block;

Further, the fuel injection angle of the fuel injector is 21.4-21.5°;

Further, the fuel injection angle of the fuel injector is 21.4362°;

Further, the opening pressure of the piston cooling nozzle assembly is 150-250kpa;

Further, the rated flow rate of the piston cooling nozzle assembly is 0.8-1.6L/min;

Further, the oil inlet of the valve body forms a trumpet-shaped outer edge radially outward along the circumference of the valve body.

Beneficial effects of the utility model: In the press-fit piston cooling nozzle assembly of the utility model, the fuel injection nozzle of the piston cooling nozzle is integrated with the valve body, no additional installation parts are required, the overall structure is simple, the manufacturing cost is low, and the volume is small , light weight, not only occupies a small installation space, the piston cooling nozzle parts will not interfere with the crankshaft connecting rod in the engine, the safety is higher, the compactness after installation is good, the stability is high, and the strength is high.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is a structural representation of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1 .

detailed description

Figure 1 is a schematic structural view of the utility model, and Figure 2 is a cross-sectional view of Figure 1, as shown in the figure: the press-fit piston cooling nozzle assembly of this embodiment includes a valve body 1 and an oil nozzle 2, and the valve body 1 is provided with an oil valve chamber 3 in the axial direction, the lower end of the valve body 1 is open to form an oil inlet 4 communicating with the oil valve chamber 3, and the oil valve chamber 3 of the valve body 1 is arranged in axial communication with the fuel injection nozzle 2 ;The valve body 1 and the fuel injector 2 are designed in one piece, the oil enters the oil valve chamber 3 through the oil inlet 4, and then sprays through the piston of the fuel injector 2, the oil channel of the fuel injector 2 and the oil of the valve body 1 The valve cavity 3 communicates with the nozzle 2 in the axial direction, the overall structure is simple, the manufacturing cost is low, the volume is small, the weight is light, not only the installation space occupied is small, the piston cooling nozzle parts will not interfere with the crankshaft connecting rod in the engine, and the safety Higher, good compactness after installation, high stability and high strength.

In this embodiment, the oil valve cavity 3 is provided with a ball 5, and the oil passage 8 of the fuel injection nozzle 2 is provided with a pressure regulating spring 6, and the pressure regulating spring 6 produces an axial preload on the ball 5. The oil valve cavity 3 is pressed tightly on the oil inlet 4 of the valve body 1 by means of force; the initial state of the oil valve chamber 3 is that the ball 5 is sealed on the oil inlet 4, and the oil inlet 4 is closed. During tension, the spheroid 5 (steel ball) compresses the pressure regulating spring 6, the oil inlet 4 is opened, and the machine oil enters the oil valve chamber 3 through the oil inlet 4, and then sprays the piston through the oil nozzle 2. A bushing can be set on the pressure regulating spring 6 to connect with the pressure regulating spring 6, and the bushing can be set in the middle of the spring, or at the junction of the oil channel 8 of the injector 2 and the oil valve cavity 3 of the valve body 1 , The length of the casing should not be too long, based on not affecting the normal elastic contraction of the spring, so that the spring is evenly stressed when it is compressed, and does not tilt, so as to ensure smooth oil inlet.

In this embodiment, the fuel injector 2 is socketed and fastened to the valve body 1, and the cross-sectional diameter of the oil passage 8 of the fuel injector 2 is set smaller than the cross-sectional diameter of the oil valve chamber 3; it can be 2 sets of fuel injectors Connected to the valve body 1, or the valve body 1 can be socketed in the fuel injector 2. In this embodiment, the fuel injector 2 is socketed in the valve body 1, and it is tightly sealed so that the oil valve cavity 3 It forms a sealed chamber with the oil passage 8 of the fuel injector 2, and the diameter of the inlet section of the oil passage 8 of the fuel injector 2 is smaller than that of the oil valve cavity 3, so that the oil can quickly enter the oil passage 8 of the fuel injector 2, and avoid oil inlet. 4 forms the oil inlet resistance, also helps machine oil pressure to be greater than the pretightening force of pressure regulating spring 6.

In this embodiment, the diameter of the outlet section of the oil passage 8 of the fuel injector 2 is smaller than the diameter of the inlet section of the oil passage 8; The diameter is smaller than the cross-sectional diameter of the oil passage 8, which facilitates the jetting of engine oil with a larger force and helps to ensure the range of the nozzle.

In this embodiment, the press-fit piston cooling nozzle assembly is arranged under the main bearing seat of the cylinder block and transitionally fits with the cylinder block; the piston cooling nozzle assembly is press-fitted under the main bearing seat of the cylinder block and will not be connected to the crankshaft Rod interference, more secure than external piston cooling nozzle parts.

In this embodiment, the fuel injection angle of the fuel injection nozzle 2 is 21.4-21.5°; that is to say, the piston cooling nozzle assembly is inclined at 21.4-21.5° to the cylinder body.

In this embodiment, the fuel injection angle of the fuel injector 2 is 21.4362°; that is to say, the piston cooling nozzle assembly is arranged at an angle of 21.4362° to the cylinder body, and the shooting range is more precise.

In this embodiment, the cracking pressure of the piston cooling nozzle assembly is 150 to 250 kPa; generally, the piston cooling nozzles of engines have cracking pressures, and this value is reasonably determined. Within the range of the cracking pressure of the piston cooling nozzles, the engine can be prevented from Frequent starting (or large-scale changes in load) causes the piston to overheat.

In this embodiment, the rated flow rate of the piston cooling nozzle assembly is 0.8-1.6 L/min.

In this embodiment, the oil inlet 4 of the valve body 1 forms a trumpet-shaped outer edge radially outward along the circumference of the valve body 1 to ensure smooth oil inlet.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (10)

1. a kind of piston cooling nozzle component, it is characterised in that：Including valve body and atomizer, axial oil is provided with the valve body Valve pocket, the fuel tap chamber of the valve body axially connects setting with atomizer.

2. piston cooling nozzle component according to claim 1, it is characterised in that：The valve body lower end opening is formed and oil The oil inlet of valve pocket connection, is provided with spheroid in the fuel tap chamber, pressure spring is provided with the oil duct of the atomizer, described Pressure spring by spheroid to produce axial pre tightening force in the way of be pressed at valve body oil inlet.

3. piston cooling nozzle component according to claim 2, it is characterised in that：The atomizer socket is anchored on valve body Set, the oil duct import diameter of section of the atomizer is set less than fuel tap chamber diameter of section.

4. piston cooling nozzle component according to claim 3, it is characterised in that：The oil passage outlet section of the atomizer Diameter is less than oil duct import diameter of section.

5. piston cooling nozzle component according to claim 4, it is characterised in that：The piston cooling nozzle component is set In cylinder block main bearing seat lower section and with cylinder block interference fits.

6. piston cooling nozzle component according to claim 1, it is characterised in that：The oil spout angle of the atomizer is 21.4~21.5 °.

7. piston cooling nozzle component according to claim 6, it is characterised in that：The oil spout angle of the atomizer is 21.4362°。

8. piston cooling nozzle component according to claim 7, it is characterised in that：The piston cooling nozzle component is opened Pressure is opened for 150~250kpa.

9. piston cooling nozzle component according to claim 8, it is characterised in that：The volume of the piston cooling nozzle component Constant flow is 0.8~1.6L/min.

10. piston cooling nozzle component according to claim 9, it is characterised in that：The oil inlet of the valve body is along valve body Circumference radially outward forms horn-like outer rim.