CN2888087Y

CN2888087Y - Oil and gas pre-separating device for internal combustion engine

Info

Publication number: CN2888087Y
Application number: CN 200620081611
Authority: CN
Inventors: 郎丰泰; 吉学之
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2006-03-07
Filing date: 2006-03-07
Publication date: 2007-04-11
Anticipated expiration: 2016-03-07

Abstract

The utility model relates to an internal combustion engine fuel and vapor pre-separator and is composed of an inlet pipe connected with the diesel crankcase outlet pipe. The tail of the said inlet pipe is connected with a diffuser casing along which the passageway for the stream of gas and fluid mixture expands. A cover is arranged on the back of the diffuser casing. On the said cover is an outlet pipe attached which is connected with the inlet pipe of the diesel fuel and vapor separator. A return tube is arranged at the bottom of the diffuser casing. Fuel and vapor stream from the crankcase is slowed down through diffusion, with some fuel being settled on the inside wall of the diffuser casing whose accumulation is then returned to the oil pan through the return tube while unseparated fuel and vapor is fed to the main separator again. Since a pre-separation is performed, the fuel and vapor are more completely separated. With the pre-separation arrangement, the lifetime cycle of the whole separating system is prolonged.

Description

Internal-combustion engine oil gas gives separator

Technical field

The utility model relates to a kind of device that the oil gas of discharging in the crank case of internal combustion engine is separated.

Background technique

During internal combustion engine, produce large quantity of exhaust gas in the crankcase, waste gas is entrained with gasification machine oil simultaneously, therefore need the oil gas of discharging in the crankcase be separated, machine oil after the separation returns oil sump, and the gas after the separation can be discharged in the atmosphere, and it is combustion-supporting also can to enter combustion chambers of internal combustion engines.The deaerator that uses on the internal-combustion engine is because the airspeed of exhausted by crankcase changes greatly at present, and the effect difference of separation is bigger, causes Oil-gas Separation not thorough, the loss that has increased machine oil.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of can regulate and slows down airspeed, makes part machine oil particle adhesion and the internal-combustion engine oil gas that compiles gives separator.

For achieving the above object, the technical solution of the utility model is: internal-combustion engine oil gas gives separator, comprise the suction tude that is connected with crank case of internal combustion engine relief opening pipe, the tail end of described suction tude is connected with air-flow path and becomes big oil-air pressure diffusion housing gradually, the rear portion of diffusion housing is provided with diffusion housing blanking cover, be connected with the steam outlet pipe that is connected with the inlet tube of I. C. engine oil gas separating device on the described housing blanking cover, the lowest part of described diffusion housing is provided with return tube.

Owing to adopt technique scheme, internal-combustion engine oil gas gives separator and comprises the suction tude that is connected with crank case of internal combustion engine relief opening pipe, the tail end of described suction tude is connected with air-flow path and becomes big oil-air pressure diffusion housing gradually, the rear portion of diffusion housing is provided with diffusion housing blanking cover, be connected with the steam outlet pipe that is connected with the inlet tube of I. C. engine oil gas separating device on the described housing blanking cover, the lowest part of described diffusion housing is provided with return tube; Flow velocity slows down behind the oil gas diffusion from crankcase, and a part of machine oil compiles the back and gets back to oil sump by return tube under deposition on the diffusion inner walls, and unsegregated oil gas enters main separator again by steam outlet pipe; Because give separation in advance, it is more thoroughly clean to make that machine oil and air separation get, good separating effect; Give the setting of separation, prolonged the working life of entire separation system.

Description of drawings

Accompanying drawing is the utility model embodiment's a structural representation.

Embodiment

As shown in Figure 1, internal-combustion engine oil gas gives separator, comprise the suction tude 1 that is connected with crank case of internal combustion engine relief opening pipe, the tail end of described suction tude 1 is connected with air-flow path and becomes big oil-air pressure diffusion housing 2 gradually, the rear portion of diffusion housing 2 is provided with diffusion housing blanking cover 21, be connected with the steam outlet pipe 3 that is connected with the inlet tube of I. C. engine oil gas separating device on the described housing blanking cover 21, the lowest part of described diffusion housing 2 is provided with return tube 4.

Described diffusion housing 2 is the awl tubular of hollow, and this structure pressure change is mild, vibrate little, noise free, and manufacturing process is simple.

Described steam outlet pipe 3 extend in the diffusion chamber in the described blanking cover 21, guarantees that oil gas has more collision and compiles chance, improves separation effect.

The dead in line of above-mentioned suction tude 1, diffusion housing 2, steam outlet pipe 3.

Claims

1. internal-combustion engine oil gas gives separator, it is characterized in that: it comprises the suction tude (1) that is connected with crank case of internal combustion engine relief opening pipe, the tail end of described suction tude (1) is connected with air-flow path and becomes big oil-air pressure diffusion housing (2) gradually, the rear portion of diffusion housing (2) is provided with diffusion housing blanking cover (21), be connected with the steam outlet pipe (3) that is connected with the inlet tube of I. C. engine oil gas separating device on the described housing blanking cover (21), the lowest part of described diffusion housing (2) is provided with return tube (4).

2. internal-combustion engine oil gas as claimed in claim 1 gives separator, it is characterized in that: described diffusion housing (2) is the awl tubular of hollow.

3. internal-combustion engine oil gas as claimed in claim 1 gives separator, it is characterized in that: described steam outlet pipe (3) extend in the interior diffusion chamber of described blanking cover (21).