Engine integrated oil separation system valve chamber housing

Abstract

The utility model provides an engine integrated oil separation system valve chamber housing, and belongs to the technical field of engines. The valve chamber housing is high in integration degree, convenient to install and arrange, capable of separating waste gas oil and good in emission reduction effect. A separation assembly is integrated on the valve chamber housing to carry out oil-gas separation treatment on waste gas, and the waste gas subjected to oil-gas separation flows through a cylinder cover gas channel to be introduced into an intake manifold and an air filter to participate in waste gas circulation. The separation assembly is integrally arranged in the valve chamber housing to perform oil-gas separation treatment on waste gas, the engine oil content in circulating waste gas is reduced, the emission reduction effect is good, the environmental protection property is high, the waste gas circulating passage is integrally arranged in the housing, the structure is compact, installation and arrangement are convenient, the separation assembly performs coarse and fine two-stage separation on the waste gas, and the waste gas treatment effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of engine technology, and in particular relates to a valve chamber cover for an integrated oil distribution system of an engine. Background Technology

[0002] The valve cover is a crucial sealing component of a car engine. Exhaust gases from fuel combustion exit the engine cylinders through the valve cover. With increasingly stringent environmental regulations, emission standards for vehicle exhaust are also rising. Reducing the oil content in exhaust gases effectively improves exhaust quality and lowers pollutant emissions. Currently, the main emission reduction method involves re-introducing the exhaust gases from primary combustion into the combustion cylinder for secondary combustion, thereby reducing pollutant levels. The valve cover is a vital component for recovering these exhaust gases. However, current valve cover designs lack compactness and occupy significant engine compartment space, making them unsuitable for compact vehicles. Therefore, a more compact valve cover is needed to meet the industry's evolving needs. Utility Model Content

[0003] To address the problems existing in the background technology, this utility model provides a valve chamber cover for an integrated oil separation system for engines. This valve chamber cover has a high degree of integration, is easy to install and lay out, can separate exhaust gas oil, and has a good emission reduction effect.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a valve chamber cover for an integrated oil separator system of an engine, including a housing, an exhaust cover, a PRV valve, a toggle pipe connector, an oil seal, an oil filler cap assembly, a separation component, and a separation cover. A cylinder head air passage is provided on the housing, and the separation component is installed on the air inlet of the cylinder head air passage. The separation cover is fixedly installed on the inner side of the housing facing the engine cylinder and covers the separation component. The separation cover and the housing form a separation processing chamber. A vent is provided on the separation cover. Exhaust gas mixed with oil in the engine flows into the separation processing chamber through the vent. After oil-gas separation treatment by the separation component, the exhaust gas enters the cylinder head air passage. A PRV valve interface is provided on the housing, and the PRV valve interface is connected to the cylinder head air passage. The PRV valve is installed on the PRV valve... At the interface, the exhaust gas after oil-gas separation flows through the PRV valve for diversion. The diverted exhaust gas flows through the cylinder head air passage to the intake manifold and air filter respectively. An exhaust cover plate is fixedly installed on the housing. The exhaust cover plate and the outer wall of the housing are clamped to form a cylinder head exhaust channel. The intake end of the cylinder head exhaust channel is connected to the cylinder head air passage. The exhaust end of the cylinder head exhaust channel is connected to the intake manifold. The exhaust gas flows through the cylinder head exhaust channel into the intake manifold. An air filter interface is provided on the housing. A toggle pipe joint is installed on the air filter interface. The exhaust end of the toggle pipe joint is connected to the air filter. The exhaust gas flows through the toggle pipe joint into the air filter. An OCV valve interface is provided on the housing. An OCV valve is installed on the OCV valve interface. An oil seal seals the OCV valve interface. An oil filler port is provided on the housing. An oil filler cap assembly is screwed onto the oil filler port.

[0005] The PRV valve includes a PRV diaphragm support ring, a PRV diaphragm, a PRV valve cover, and a spring. The spring is filled into the PRV valve interface, the PRV diaphragm support ring is press-fitted onto the spring, the PRV diaphragm is mounted on the PRV diaphragm support ring, the PRV valve cover is mounted on the PRV diaphragm, and the lower end of the PRV valve cover is fixedly connected to the housing.

[0006] The separation assembly includes a separation unit seat, a separation unit baffle, and a felt. The separation unit baffle is fixedly installed on the separation unit seat, and the felt is fixedly installed on the separation unit baffle and located on the side of the separation unit baffle facing the housing. The separation unit seat is fixedly connected to the housing and covers the air intake of the cylinder head air passage.

[0007] The valve chamber cover of the engine integrated oil distribution system also includes a sealing gasket, a steel sleeve, and a nut. Multiple steel sleeves are provided on the end face of the housing that connects to the engine cylinder block. The housing is fixedly connected to the engine cylinder block through multiple steel sleeves. A sealing gasket is sandwiched between the housing and the engine cylinder block. Nuts for connecting to external components are provided on the outer wall of the housing.

[0008] A check valve is installed at the junction of the curved pipe joint and the housing to prevent backflow of exhaust gas. Multiple vents are provided on the separation cover plate, and an oil drain valve is installed on the vent directly opposite the separation assembly. An interference plate for coarse separation of exhaust gas is provided on the surface of the separation cover plate within the separation processing chamber.

[0009] A check valve is installed between the cylinder head air passage and the cylinder head air outlet passage. The structure of the check valve is the same as that of the check valve.

[0010] The beneficial effects of this utility model are as follows: The valve chamber cover integrates a separation component to perform oil-gas separation treatment on the exhaust gas, reducing the oil content in the circulating exhaust gas, resulting in good emission reduction and high environmental protection; the cover integrates an exhaust gas circulation passage, making the structure compact; the cover performs coarse and fine separation of the exhaust gas, reducing the oil content in the exhaust gas and helping to extend the service life of other components in the exhaust gas circulation passage; the toggle pipe joint is a quick-release part, which is convenient for maintenance and replacement; a check valve is installed at the toggle pipe joint to prevent the backflow of exhaust gas. Attached Figure Description

[0011] In the attached diagram:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] In the diagram: 1. Housing; 2. Exhaust cover; 3. PRV diaphragm support ring; 4. PRV diaphragm; 5. PRV valve cover; 6. Torx pipe connector; 7. Oil seal; 8. Oil inlet cover assembly; 9. Check valve; 10. Spring; 11. Separator unit seat; 12. Separator unit baffle; 13. Felt; 14. Drain valve; 15. Separator cover; 16. Sealing gasket; 17. Steel sleeve; 18. Nut. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0015] A valve chamber cover for an integrated oil separator system in an engine includes a housing 1, an exhaust cover 2, a PRV valve, a toggle pipe connector 6, an oil seal 7, an oil filler cap assembly 8, a separation component, and a separation cover 15. The housing 1 has a cylinder head intake passage, and the separation component is installed on the intake port of the cylinder head intake passage. The separation cover 15 is fixedly installed on the inner side of the housing 1 facing the engine cylinder and covers the separation component. The separation cover 15 and the housing 1 form a separation processing chamber. A vent 19 is provided on the separation cover 15. Exhaust gas mixed with oil from the engine enters the separation processing chamber through the vent 19. After oil-gas separation by the separation component, the exhaust gas enters the cylinder head intake passage. A PRV valve interface is provided on the housing 1, which is connected to the cylinder head intake passage. The PRV valve is installed on the PRV valve interface to complete the separation process. The exhaust gas from the oil-gas separation is diverted by the PRV valve. The diverted exhaust gas flows through the cylinder head air passage to the intake manifold and air filter respectively. An exhaust cover plate 2 is fixedly installed on the housing 1. The exhaust cover plate 2 and the outer wall of the housing 1 are clamped together to form a cylinder head exhaust channel. The intake end of the cylinder head exhaust channel is connected to the cylinder head air passage. The exhaust end of the cylinder head exhaust channel is connected to the intake manifold. The exhaust gas flows into the intake manifold through the cylinder head exhaust channel. An air filter interface is provided on the housing 1. A toggle pipe connector 6 is installed on the air filter interface. The exhaust end of the toggle pipe connector 6 is connected to the air filter. The exhaust gas flows into the air filter through the toggle pipe connector 6. An OCV valve interface is provided on the housing 1. An OCV valve is installed on the OCV valve interface. An oil seal 7 seals the OCV valve interface. An oil filler port is provided on the housing 1. An oil filler port cap assembly 8 is screwed onto the oil filler port.

[0016] The PRV valve includes a PRV diaphragm support ring 3, a PRV diaphragm 4, a PRV valve cover 5, and a spring 10. The spring 10 is filled in the PRV valve interface, the PRV diaphragm support ring 3 is pressed onto the spring 10, the PRV diaphragm 4 is mounted on the PRV diaphragm support ring 3, the PRV valve cover 5 is mounted on the PRV diaphragm 4, and the lower end of the PRV valve cover 5 is fixedly connected to the housing 1.

[0017] The separation assembly includes a separation unit seat 11, a separation unit baffle 12, and a felt 13. The separation unit baffle 12 is fixedly installed on the separation unit seat 11, and the felt 13 is fixedly installed on the separation unit baffle 12 and located on the side of the separation unit baffle 12 facing the housing 1. The separation unit seat 11 is fixedly connected to the housing 1 and covers the air intake of the cylinder head air passage.

[0018] The valve chamber cover of the engine integrated oil distribution system also includes a sealing gasket 16, a steel sleeve 17 and a nut 18. Multiple steel sleeves 17 are provided on the end face of the housing 1 that is connected to the engine cylinder block. The housing 1 is fixedly connected to the engine cylinder block through multiple steel sleeves 17. A sealing gasket 16 is sandwiched between the housing 1 and the engine cylinder block. Nuts 18 for connecting to external components are provided on the outer wall of the housing 1.

[0019] A check valve 9 is installed at the connection point between the curved pipe joint 6 and the housing 1. The check valve 9 prevents the backflow of exhaust gas. The curved pipe joint 6 has a quick-connect structure, which facilitates maintenance and replacement.

[0020] The separation cover plate 15 is provided with multiple vents 19, and an oil drain valve 14 is installed on the vent 19 facing the separation component. The oil separated from the exhaust gas by the separation component flows back into the engine cylinder through the oil drain valve 14.

[0021] The separation cover plate 15 is located on the surface of the separation processing chamber and is provided with an interference plate 20 for coarse separation of exhaust gas. Exhaust gas flows through the gap of the interference plate 20, and large oil molecules are retained on the interference plate 20. The retained oil flows back into the engine cylinder.

[0022] A check valve is installed between the cylinder head air passage and the cylinder head air outlet passage. The structure of the check valve is the same as that of the check valve 9.

[0023] Working principle: Multiple bolts are inserted into the steel sleeve 17 to fix the housing 1 to the engine block. Exhaust gas mixed with oil enters the separation and treatment chamber through the air inlet 19. The exhaust gas first flows through the interference plate 20 for coarse separation. The exhaust gas after coarse separation flows through the separation component for fine separation. The exhaust gas after fine separation enters the cylinder head air passage. Under the pressure control of the PRV valve, the exhaust gas is passed into the intake manifold and air filter to participate in the exhaust gas circulation. The circulating exhaust gas is re-entered into the combustion chamber for complete combustion before being discharged, avoiding pollution caused by direct exhaust. A check valve 9 is installed at the connection between the cylinder head air passage and the air filter, and a backflow preventer is installed at the connection between the cylinder head air passage and the intake manifold. Both the check valve 9 and the backflow preventer prevent the exhaust gas from flowing back.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A valve chamber cover for an integrated oil distribution system in an engine, characterized in that: The system includes a housing (1), an exhaust cover (2), a PRV valve, a toggle pipe connector (6), an oil seal (7), an oil filler cap assembly (8), a separation assembly, and a separation cover (15). The housing (1) has a cylinder head air passage. The separation assembly is installed on the air inlet of the cylinder head air passage. The separation cover (15) is fixedly installed on the inner side of the housing (1) facing the engine cylinder and covers the separation assembly. The separation cover (15) and the housing (1) form a separation processing chamber. A vent (19) is provided on the separation cover (15). Exhaust gas mixed with oil from the engine flows through the vent (19) into the separation processing chamber. After oil-gas separation by the separation assembly, the exhaust gas enters the cylinder head air passage. A PRV valve interface is provided on the housing (1), which is connected to the cylinder head air passage. The PRV valve is installed on the PRV valve interface to complete the oil-gas separation process. The airflow is split by the PRV valve. The split exhaust gas flows to the intake manifold and air filter respectively through the cylinder head air passage. The exhaust cover plate (2) is fixedly installed on the housing (1). The exhaust cover plate (2) and the outer wall of the housing (1) are clamped to form the cylinder head exhaust passage. The intake end of the cylinder head exhaust passage is connected to the cylinder head air passage. The exhaust end of the cylinder head exhaust passage is connected to the intake manifold. The exhaust gas flows into the intake manifold through the cylinder head exhaust passage. An air filter interface is provided on the housing (1). The toggle pipe joint (6) is installed on the air filter interface. The exhaust end of the toggle pipe joint (6) is connected to the air filter. The exhaust gas flows into the air filter through the toggle pipe joint (6). An OCV valve interface is opened on the housing (1). The OCV valve is installed on the OCV valve interface. The oil seal (7) seals the OCV valve interface. An oil filling port is opened on the housing (1). An oil filling port cap assembly (8) is screwed onto the oil filling port.

2. The valve chamber cover of an integrated oil distribution system for an engine according to claim 1, characterized in that: The PRV valve includes a PRV diaphragm support ring (3), a PRV diaphragm (4), a PRV valve cover (5), and a spring (10). The spring (10) is filled in the PRV valve interface. The PRV diaphragm support ring (3) is pressed onto the spring (10). The PRV diaphragm (4) is mounted on the PRV diaphragm support ring (3). The PRV valve cover (5) is mounted on the PRV diaphragm (4). The lower end of the PRV valve cover (5) is fixedly connected to the housing (1).

3. The valve chamber cover of an integrated oil distribution system for an engine according to claim 2, characterized in that: The separation assembly includes a separation unit seat (11), a separation unit baffle (12), and a felt (13). The separation unit baffle (12) is fixedly installed on the separation unit seat (11), and the felt (13) is fixedly installed on the separation unit baffle (12) and located on the side of the separation unit baffle (12) facing the housing (1). The separation unit seat (11) is fixedly connected to the housing (1) and covers the air intake of the cylinder head air passage.

4. The valve chamber cover of an integrated oil distribution system for an engine according to claim 3, characterized in that: The valve chamber cover of the engine integrated oil distribution system also includes a sealing gasket (16), a steel sleeve (17) and a nut (18). Multiple steel sleeves (17) are provided on the end face of the housing (1) connected to the engine cylinder block. The housing (1) is fixedly connected to the engine cylinder block through multiple steel sleeves (17). A sealing gasket (16) is sandwiched between the housing (1) and the engine cylinder block. Nuts (18) for connecting with external components are provided on the outer wall of the housing (1).

5. The valve chamber cover of an integrated oil distribution system for an engine according to claim 4, characterized in that: A check valve (9) is installed at the connection point between the curved pipe joint (6) and the housing (1). The check valve (9) prevents the backflow of exhaust gas.

6. The valve chamber cover of an integrated oil distribution system for an engine according to claim 5, characterized in that: The separation cover plate (15) is provided with multiple vents (19), and an oil drain valve (14) is installed on the vent (19) facing the separation component.

7. The valve chamber cover of an integrated oil distribution system for an engine according to claim 6, characterized in that: The separation cover plate (15) is located on the surface of the separation processing chamber and is provided with an interference plate (20) for coarse separation of the exhaust gas.

8. The valve chamber cover of an integrated oil distribution system for an engine according to claim 5, characterized in that: A check valve is installed between the cylinder head air passage and the cylinder head air outlet passage. The structure of the check valve is the same as that of the check valve (9).

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