CN214660425U

CN214660425U - Metal foam bumping condensation filter block

Info

Publication number: CN214660425U
Application number: CN202120472424.3U
Authority: CN
Inventors: 韩坚锋; 李宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-11-09
Anticipated expiration: 2031-03-03

Abstract

The utility model relates to a filtering block is hit to metal foam that can purify gaseous of flowing through in crankcase ventilation link in the internal-combustion engine crankcase ventilation system field in particular to. The metal foam bumping and condensing filter block is made of metal foam materials, is good in economy, light in weight and small in size, hardly increases the weight of an internal combustion engine, does not change the internal pressure of an original crankcase of the internal combustion engine, does not block the circulation of blow-by gas in the crankcase, and does not have any side effect.

Description

Metal foam bumping condensation filter block

Technical Field

The utility model relates to a filtering block is hit to metal foam that can purify gaseous of flowing through in crankcase ventilation link in the internal-combustion engine crankcase ventilation system field in particular to.

Background

When the internal combustion engine works, high-pressure combustible mixed gas and burnt gas in the combustion chamber can more or less escape into a crankcase through a gap between the piston group and the cylinder, and blow-by gas is generated. The main components of the blow-by gas are unburned fuel gas, water vapor, exhaust gas and the like, and once the fuel gas and the exhaust gas enter the engine oil in the crankcase, the engine oil can be diluted, the service performance of the engine oil is reduced, and the oxidation and the deterioration of the engine oil are accelerated. The water and the air are condensed in the engine oil to form oil sludge and block an oil way; acid gases in the exhaust gas are mixed into the lubrication system, which can cause corrosion and accelerated wear of internal combustion engine parts; blow-by also raises the pressure in the crankcase, which can break the crankcase seal when the pressure is too high, causing leakage of oil. At present, a turbocharged direct injection internal combustion engine is increasingly popularized, air blowby enables part of engine oil to be atomized, and atomized engine oil steam cannot be separated and recovered by an existing crankcase ventilation system completely, so that part of engine oil steam enters a cylinder through an air inlet channel to be combusted again, engine oil is burnt, carbon deposition is formed, and the working condition of the internal combustion engine is damaged.

In order to prevent the crankcase from being over pressurized, prolong the service life of engine oil, reduce the abrasion and corrosion of parts and prevent the oil leakage of the internal combustion engine, the ventilation of the crankcase must be implemented. In addition, to meet increasingly stringent emissions requirements and to improve economy, the construction of existing internal combustion engine crankcase ventilation systems must be further refined.

Disclosure of Invention

In order to solve the problem, the utility model provides a metal foam hits congeals filter block.

The utility model adopts the technical proposal that:

the metal foam bumping condensation filter block is made of metal foam and is arranged in a necessary channel for generating air blowby in a ventilation system of a crankcase of an internal combustion engine, because the interior of the metal foam is of a cavity porous structure and all cavities are communicated, the metal foam belongs to a labyrinth structure, therefore, the blowby gas of the crankcase can be repeatedly collided, condensed and filtered in the labyrinth structure as long as the blowby gas passes through the metal foam collided and condensed filter block, oily and water-based substances in the mist blowby gas of the crankcase can be adhered to the metal foam collided and condensed filter block, and separated from the gas, the separated liquid flows back to the engine oil duct along the metal wire in the metal foam colliding and condensing filter block due to the dead weight, and the separated gas enters a pipeline of a ventilation system of a crankcase of the internal combustion engine through the metal foam impaction and condensation filter block, so that the separation of the blowby gas component of the crankcase is realized.

The utility model has the advantages that:

1. the original crankcase ventilation system is not required to be structurally changed, the defect that the original crankcase ventilation system is not thorough in blowby gas separation can be effectively overcome by directly additionally arranging the metal foam bumping and condensing filter block at a proper position, and the separation efficiency of the existing internal combustion engine crankcase ventilation system is economically and conveniently improved.

2. The metal foam bumping condensation filter block is made of metal foam materials, is light in weight and small in size, hardly increases the weight of an internal combustion engine, and does not influence the requirement of light weight of the internal combustion engine design.

3. The metal foam bumping and condensing filter block has the characteristics of high ventilation rate, no air resistance and large air resistance different from most of the existing oil gas filter materials, is directly additionally arranged in a crankcase ventilation system of an internal combustion engine, does not change the original internal pressure of the crankcase of the internal combustion engine, does not block the ventilation of blow-by gas in the crankcase, and has no side effect.

Drawings

The following is further illustrated in connection with the figures of the present invention:

fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic illustration of the oil and gas separation of a ventilation system of the crankcase of an engine having code EA 888.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, which are preferred embodiments of the present invention.

See fig. 1. Fig. 1 is a schematic structural diagram of the present invention.

See fig. 2. Fig. 2 is a schematic view of the oil-gas separation of a ventilation system of EA888 engine crankcase, which is used to illustrate the working principle of the metal foam bumping into the condensing filter block, and the principle is the same for other types of internal combustion engines.

The crankcase blowby gas with the mist oil gas enters the oil-gas separator through the inlet cavity A, the crankcase blowby gas reaches the cavity B after passing through the cavity A, the cavity A and the cavity B are the necessary paths for blowby gas, the metal foam bumping and condensing filter block with the same shape and size is arranged in the cavity A or the cavity B, or the metal foam bumping and condensing filter block with the same shape and size is respectively arranged in the cavity A and the cavity B, and the blowby gas is bumped, condensed, filtered and separated in the metal foam bumping and condensing filter block. There is a lower port at position C and the separated liquid flows out of position C back to the engine oil gallery.

After most liquid is separated from the blow-by gas passing through the cavity A and the cavity B, the blow-by gas continuously passes through the position D, the position D is a cyclone separation mechanism carried by the original internal combustion engine, and the problem of incomplete separation of the blow-by gas of a crankcase exists because the separation capability is limited.

The blowby gas purified by the cavity A and the cavity B in cooperation with the cavity D enters an air inlet system of the internal combustion engine through passages E and F respectively and then enters the cylinder for combustion again. Because the blowby gas which enters the cylinder again for combustion is separated and purified for many times, oily and water-based substances are hardly contained in the blowby gas, thereby reducing or even avoiding the loss of engine oil and the generation of carbon deposition, protecting the structure of the internal combustion engine and prolonging the service life of the internal combustion engine.

Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the above-disclosed embodiments, and some modifications and changes of the present invention should fall within the scope of the claims of the present invention, and the metal foam of the present invention includes all foam-like metals, including metal foams manufactured by 3D printing, metal foams of new future development, and alloy foams of new future development. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A metal foam bumping condensation filter block is characterized in that: the metal foam is made of metal foam and is arranged in a necessary channel for generating blow-by gas in a crankcase ventilation system of an internal combustion engine, the interior of the metal foam is of a cavity porous structure, and all cavities are communicated with each other, so that the metal foam belongs to a labyrinth structure.