CN210461790U

CN210461790U - Intermediate loop energy-saving engine oil control valve

Info

Publication number: CN210461790U
Application number: CN201921304562.XU
Authority: CN
Inventors: 赵敬刚; 谢超华; 张�林; 张金伟; 赵军; 唐俊; 齐邱豪
Original assignee: Mianyang Fulin Precision Machinery Co Ltd
Current assignee: Mianyang Fulin Precision Machinery Co Ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-05-05
Anticipated expiration: 2029-08-12

Abstract

The utility model provides an energy-saving engine oil control valve of middle return circuit, including valve housing and piston, valve housing on form first work interface, second work interface respectively, piston and valve housing between form relative sliding fit structure, and form middle runner between piston and valve housing, the piston on form first logical hydraulic fluid port, second logical hydraulic fluid port respectively, install first check valve in the cavity inner chamber of piston, the piston slides the in-process for valve housing, first work interface, middle runner, first check valve, second logical hydraulic fluid port communicate in proper order, perhaps, second work interface, middle runner, first check valve, first logical hydraulic fluid port communicate in proper order. The utility model discloses can reduce the consumption to fluid medium effectively, when being applied to variable valve timing governing system, can also make its phase place governing speed improve.

Description

Intermediate loop energy-saving engine oil control valve

Technical Field

The utility model belongs to the technical field of the engine oil control valve structural design and specifically relates to an energy-conserving engine oil control valve of intermediate circuit is related to.

Background

The variable valve timing adjusting technology is characterized in that under a specific engine working condition, the opening angles of an intake valve and an exhaust valve of an internal combustion engine are controlled, and the overlap angle of the intake valve and the exhaust valve is changed, so that the purposes of increasing intake charge and efficiency, better organizing intake vortex, adjusting the explosion pressure and residual exhaust gas quantity of a cylinder and finally improving the comprehensive performances of the engine such as power, torque, emission, fuel economy and the like are achieved.

At present, a common variable valve timing adjusting system mainly adopts an oil pump to output oil pressure to an oil control valve as driving force to work, wherein the oil control valve has a complex structure, high dependence on fluid medium pressure (oil pressure) and large oil consumption, so that higher oil pressure and oil pumping amount requirements are provided for an engine oil pump system, the structure of the engine system is more complex, and oil leakage must be compensated by means of a high driving oil pressure ratio; particularly under low temperature conditions, the response speed of the variable valve timing adjusting system is low due to high viscosity of the engine oil.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: aiming at the problems in the prior art, the intermediate loop energy-saving type oil control valve is provided, and the consumption of a fluid medium is reduced.

The to-be-solved technical problem of the utility model adopts following technical scheme to realize: the utility model provides an energy-saving engine oil control valve of middle return circuit, includes valve housing and piston, the valve housing on form first work interface, second work interface respectively, piston and valve housing between form relative sliding fit structure and form middle runner between piston and valve housing, the piston on form first logical hydraulic fluid port, second logical hydraulic fluid port respectively, install first check valve in the cavity inner chamber of piston, the piston is in for the valve housing slip in-process, first work interface, middle runner, first check valve, second logical hydraulic fluid port communicate in proper order, perhaps, second work interface, middle runner, first check valve, first logical hydraulic fluid port communicate in proper order.

Preferably, the first one-way valve is fixedly arranged on a mandrel, and the mandrel is fixedly connected in a hollow inner cavity of the piston.

Preferably, a positioning boss is formed on the mandrel, and the first one-way valve is fixedly mounted on the mandrel through the positioning boss.

Preferably, the positioning boss and the mandrel are of an integrated molding structure.

Preferably, the fixed connection structure is formed between the mandrel and the piston in an interference fit mode.

Preferably, the mandrel is in an H-shaped cross section, and an installation space of the first check valve is formed between the mandrel and the piston.

Preferably, a second check valve is installed in a hollow inner cavity of the valve housing, an oil inlet is formed in the valve housing, and the oil inlet is communicated with the second oil through opening through the second check valve.

Preferably, a baffle ring is arranged in the inner cavity of the valve housing, and the sliding stroke of the piston relative to the valve housing is limited by the baffle ring.

Preferably, a spring seat is fixedly connected in the inner cavity of the valve housing, and a return spring is arranged between the spring seat and the valve housing.

Preferably, the spring seat and the valve shell form a fixed connection structure in an interference fit mode.

Compared with the prior art, the beneficial effects of the utility model are that: because a middle flow passage is formed between the piston and the valve shell, a first oil through port and a second oil through port are respectively formed on the piston, a first one-way valve is arranged in a hollow inner cavity of the piston, the piston slides axially relative to the valve shell and is matched with the first one-way valve, so that the flow direction path of a fluid medium is changed, and the flow direction is controlled, the first working interface, the middle flow passage, the first one-way valve and the second oil through port are sequentially communicated, or the second working interface, the middle flow passage, the first one-way valve and the first oil through port are sequentially communicated, the consumption of the fluid medium can be effectively reduced; additionally, the utility model discloses when being applied to variable valve timing governing system, can also improve variable valve timing governing system's phase place governing speed.

Drawings

Fig. 1 is a schematic structural diagram (working mode 1) of an energy-saving engine oil control valve of an intermediate circuit according to the present invention.

Fig. 2 is a schematic structural diagram (working mode 2) of an energy-saving engine oil control valve of the intermediate circuit of the present invention.

Fig. 3 is the utility model relates to an intermediate circuit energy-saving engine oil control valve is applied to variable valve timing governing system's theory of operation schematic diagram.

Part label name in the figure: the hydraulic control valve comprises a retaining ring 1, a core shaft 2, a valve shell 3, a piston 4, a first check valve 5, a second check valve 6, a filter screen 7, a return spring 8, a spring seat 9, a middle flow passage 10, a stator 11, a hysteresis cavity 12, an advance cavity 13, a rotor blade 14, a positioning boss 21, an air elimination port 31, a first working interface 32, an oil inlet 33, a second working interface 34, a first oil through port 41 and a second oil through port 42.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific 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.

The intermediate circuit energy-saving type oil control valve as shown in fig. 1 and 2 mainly comprises a valve housing 3 and a piston 4, wherein the valve housing 3 and the piston 4 are both of a hollow cavity structure, an air relief port 31, a first working interface 32, an oil inlet 33 and a second working interface 34 are respectively formed on the valve housing 3, a second one-way valve 6 is installed in a hollow inner cavity of the valve housing 3, and a filter screen 7 is fixedly connected to an end inlet of the valve housing 3. A first oil through hole 41 and a second oil through hole 42 are respectively formed on the piston 4, and a first check valve 5 is installed in a hollow inner cavity of the piston 4; the piston 4 is movably arranged in the hollow inner cavity of the valve shell 3, a relative sliding fit structure is formed between the piston 4 and the valve shell 3, and an intermediate flow passage 10 is formed between the piston 4 and the valve shell 3. A spring seat 9 is fixedly connected in the inner cavity of the valve shell 3, a return spring 8 is arranged between the spring seat 9 and the valve shell 3, and the return spring 8 can provide return power for the axial reciprocating motion of the piston 4. Generally, the spring seat 9 and the valve housing 3 are preferably fixedly connected by interference fit.

When the piston 4 slides axially relative to the valve housing 3, the oil inlet 33 may be communicated with the second oil through hole 42 through the second check valve 6, and the first working port 32, the intermediate flow passage 10, the first check valve 5, and the second oil through hole 42 may be sequentially communicated with each other, or the second working port 34, the intermediate flow passage 10, the first check valve 5, and the first oil through hole 41 may be sequentially communicated with each other. The air-release port 31 is communicated with the end surface of the piston 4 so as to release air and release oil when the piston 4 moves. In order to prevent the piston 4 from falling out of the inner cavity of the valve housing 3, a stop ring 1 may be provided in the inner cavity of the valve housing 3, and the sliding stroke of the piston 4 relative to the valve housing 3 may be limited by the stop ring 1.

In order to facilitate the assembly operation of the first check valve 5 and ensure the operational reliability of the first check valve 5, the first check valve 5 may be fixedly mounted on the mandrel 2, and the mandrel 2 is fixedly connected in the hollow inner cavity of the piston 4. In order to make the structure of the oil control valve more compact, the cross-sectional shape of the mandrel 2 may be designed into an H-shaped structure, and an installation space of the first check valve 5 is formed between the mandrel 2 and the piston 4. Further, a positioning boss 21 may be formed on the mandrel 2, and the first check valve 5 is fixedly mounted on the mandrel 2 through the positioning boss 21. Generally, the positioning boss 21 and the mandrel 2 are preferably integrally formed, and the fixed connection structure between the mandrel 2 and the piston 4 is preferably formed in an interference fit manner.

The utility model discloses among the variable valve timing governing system of can being applied to, its theory of operation is as shown in figure 3. Specifically, the hollow inner cavity of the stator 11 is divided into a retarding cavity 12 and an advancing cavity 13 by the rotor blades 14 of the phaser, the retarding cavity 12 is communicated with the second working interface 34, and the advancing cavity 13 is communicated with the first working interface 32, when the piston 4 slides axially relative to the valve housing 3, the following 2 working modes can be formed:

working mode 1: in the process that the piston 4 slides relative to the valve housing 3, when the second check valve 6 and the first check valve 5 are sequentially opened by the hydraulic pressure of the fluid medium in the oil inlet 33, the second check valve 6, the second oil outlet 42, the first check valve 5, the first oil outlet 41 and the first working port 32 are sequentially communicated to form a fluid passage, and meanwhile, the second working port 34, the intermediate flow passage 10, the first check valve 5, the first oil outlet 41 and the first working port 32 are also sequentially communicated to form a fluid passage, as shown in fig. 1 and 3.

The working mode 2 is as follows: in the process that the piston 4 slides relative to the valve housing 3, when the hydraulic pressure of the fluid medium in the oil inlet 33 opens the second check valve 6 and the hydraulic pressure of the fluid medium in the first working port 32 opens the first check valve 5, the first working port 32, the intermediate flow passage 10, the first check valve 5, the second oil through port 42 and the second working port 34 are sequentially communicated to form a fluid passage, and meanwhile, the oil inlet 33, the second check valve 6 and the second oil through port 42 are sequentially communicated to form a fluid passage, as shown in fig. 2.

The utility model changes the flow direction path of the fluid medium and controls the flow direction by the axial reciprocating sliding of the piston 4 relative to the valve shell 3 and the matching with the first one-way valve 5, thereby the utility model can realize the 2 working modes, thereby effectively reducing the consumption of the fluid medium; when it is applied to a variable valve timing adjusting system, the phase adjusting speed of the variable valve timing adjusting system can also be increased by the 2 operation modes described above.

The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.

Claims

1. The utility model provides an energy-conserving engine oil control valve of middle return circuit, includes valve housing (3) and piston (4), valve housing (3) on form first work interface (32), second work interface (34) respectively, piston (4) and valve housing (3) between form relative sliding fit structure and form middle runner (10) between piston (4) and valve housing (3), its characterized in that: piston (4) on form first logical hydraulic fluid port (41), second logical hydraulic fluid port (42) respectively, install first check valve (5) in the cavity inner chamber of piston (4), piston (4) are in for valve housing (3) slip in-process, first work interface (32), middle runner (10), first check valve (5), second logical hydraulic fluid port (42) communicate in proper order, perhaps, second work interface (34), middle runner (10), first check valve (5), first logical hydraulic fluid port (41) communicate in proper order.

2. The intermediate circuit energy saving type oil control valve as claimed in claim 1, wherein: the first one-way valve (5) is fixedly arranged on the mandrel (2), and the mandrel (2) is fixedly connected in the hollow inner cavity of the piston (4).

3. The intermediate circuit energy saving type oil control valve as claimed in claim 2, wherein: a positioning boss (21) is formed on the mandrel (2), and the first one-way valve (5) is fixedly installed on the mandrel (2) through the positioning boss (21).

4. The intermediate circuit energy saving type oil control valve according to claim 3, wherein: the positioning boss (21) and the mandrel (2) are in an integrated molding structure.

5. The intermediate circuit energy saving type oil control valve as claimed in claim 2, wherein: the mandrel (2) and the piston (4) form a fixed connection structure in an interference fit mode.

6. The intermediate circuit energy saving type oil control valve as claimed in claim 2, wherein: the section of the mandrel (2) is in an H-shaped structure, and an installation space of the first one-way valve (5) is formed between the mandrel (2) and the piston (4).

7. An intermediate circuit energy saving type oil control valve according to any one of claims 1 to 6, characterized in that: a second one-way valve (6) is installed in a hollow inner cavity of the valve shell (3), an oil inlet (33) is formed in the valve shell (3), and the oil inlet (33) is communicated with a second oil through opening (42) through the second one-way valve (6).

8. An intermediate circuit energy saving type oil control valve according to any one of claims 1 to 6, characterized in that: a baffle ring (1) is arranged in an inner cavity of the valve shell (3), and the sliding stroke of the piston (4) relative to the valve shell (3) is limited through the baffle ring (1).

9. An intermediate circuit energy saving type oil control valve according to any one of claims 1 to 6, characterized in that: a spring seat (9) is fixedly connected in the inner cavity of the valve shell (3), and a return spring (8) is arranged between the spring seat (9) and the valve shell (3).

10. The intermediate circuit energy saving type oil control valve as claimed in claim 9, wherein: and a fixed connecting structure is formed between the spring seat (9) and the valve shell (3) in an interference fit mode.