CN2361840Y

CN2361840Y - Recirculation exhaust purifier for four cycle engine

Info

Publication number: CN2361840Y
Application number: CN 99206500
Authority: CN
Inventors: 袁彪
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-06
Filing date: 1999-04-06
Publication date: 2000-02-02
Anticipated expiration: 2009-04-06

Abstract

The utility model relates to a recirculation exhaust gas purifier for four-stroke engines. A container is divided into an upper cavity and a lower cavity through a baffle with vent holes. The upper cavity is provided with a filter screen, and the lower cavity is provided with blades and a stirring arm. The blades and the stirring arm are fixed in a coaxial way. A gas exhaust outlet, a gas inlet and a mixing liquid exhaust outlet are respectively arranged on the walls of the upper and the lower cavities. The utility model has the advantages that the utility model purifies recirculation tail gas, increases power for engines, and reduces the exhaust of harmful matters.

Description

Recirculation exhaust purifier of four-stroke engine

The utility model relates to a four-stroke engine recirculated tail gas's purifier.

At present, in order to reduce air pollution and save fuel oil, a motor vehicle is connected by a rubber tube among a crankcase, a ventilation valve and an air filter of an engine, so that the tail gas which is not completely combusted in the engine is recycled into a cylinder for combustion, but the tail gas is not pure combustible gas, and impurities of the tail gas can influence the working condition of the engine, so that the tail gas needs to be purified.

The recirculated tail gas refers to the gas which can be combusted and utilized again when the cylinder wall enters the crankcase and is exhausted through the crankcase breather valve when the engine works.

Gasoline is a hydrocarbon organic matter composed of C, H, and has the following reactions when an engine burns to produce work:

C、

H₂o and gasoline are easy to form white jelly (organic substance of water and hydrocarbon) under the condition of engine working temperatureA mixture of (a) and (b).

The recirculated exhaust gas therefore includes:

1. when the engine is in a compression stroke, the cylinder wall leaks into combustible gas of the crankcase;

2. CO leaking into crankcase from cylinder wall when engine power stroke₂、H₂O；

3、H₂The O + hydrocarbon organic matters form white jelly in the crankcase at certain temperature.

The impurity in the recycled tail gas is H₂O (non-combustible, which reduces engine power by entering the cylinder) and white jelly (which may not burn completely and form carbon deposits) and therefore, filtration of both substances is required. Due to CO₂Molecular weight of H₂Large O, and the content leaked into the crankcase during the power stroke is higher than H₂O is small and is not considered.

The utility model aims to design a device for eliminating water vapor, engine oil particles and white jelly in the recirculated tail gas.

The utility model discloses a realize like this: a container is divided into an upper cavity and a lower cavity by a partition board, the partition board is provided with a vent holeto enable the upper cavity and the lower cavity to be communicated, the outer walls of the upper cavity and the lower cavity are respectively provided with an air outlet and an air inlet, the air outlet and the air inlet can be connected with a rubber pipe, a fan blade and a stirring arm are fixed in the lower cavity, the fan blade is arranged above the lower cavity, the stirring arm is arranged below and coaxially fixed, the fan blade is opposite to the air inlet on the wall of the lower cavity, so that the air flow of the air inlet blows the fan blade to rotate, the bottom of the lower cavity is provided with a sundry discharge port, the sundry discharge port is provided with a float liquid discharge automatic controller, when sundry liquid in the lower cavity is stored to a certain height, the float liquid discharge automatic.

Compared with the prior art, the utility model have following advantage: 1) most of water vapor, engine oil particles and white jelly in the tail gas are filtered out, so that the working condition of an engine cylinder is greatly improved, the formation of carbon deposition is reduced, and the power is increased; 2) the air filter and the carburetor are cleaned, so that the cleaning mileage is prolonged; 3) and the harmful emission of vehicles is reduced.

The following detailed description is made with reference to the accompanying drawings.

The attached drawing is the structure schematic diagram of the utility model.

A filter screen 2 is fixed in the cylindrical container, an air outlet 10 is arranged on the outer wall 1 of the cylindrical container, and a joint is fixed at the air outlet 10 so as to be connected with a rubber pipe. The bottom wall 9 of the container is provided with a vent hole 3, and the cylindrical outer wall 1 is provided with internal threads or external threads. The other cylindrical container with the upper opening with the diameter similar to that of the container is provided with a screw thread which is screwed with the container at the opening, the cylindrical wall of the other cylindrical container is provided with an air inlet 8, the air inlet 8 is fixedly connected with a joint which is convenient to be connected with a rubber pipe, the bottom of the other cylindrical container is provided with a sundries discharge port, a fan blade 4 and a stirring arm 5 are fixed in the other cylindrical container, the fan blade 4 is arranged above the stirring arm 5, and the stirring arm 5 is arranged below the stirring arm and coaxially fixed, so. The fan blade 4 is opposite to the air inlet 8, so that the air flow of the air inlet 8 blows the fan blade 4 to rotate. The impurity liquid outlet is provided with a plug 7, the plug 7 is hinged with a lever, one end of the lever is hinged and fixed, the other end of the lever is fixed with a float 6, and the two cylindrical containers are sealed and fixed together through threads so as to clean the fan blade 4 and the stirring arm 5 regularly. The removable fixing may also be achieved by other methods. The tail gas gets into cavity of resorption back volume increase by air inlet 8, and pressure reduces, and waste oil grain colloid etc. flows into the bottom under the action of gravity, and the high temperature steam in the tail gas condenses into liquid water and falls into the bottom, and the air current of air inlet 8 blows fan blade 4 and drives the miscellaneous liquid of stirring arm 5 stirring bottom to avoid the colloid thing to settle and decide and block up the debris discharge port, when miscellaneous liquid holds a certain height, cursory 6 floats, draws and blocks up 7, discharges miscellaneous liquid. The residual tail gas enters the upper cavity through the re-air vent 3, is filtered by the filter screen 2 andthen is discharged from the discharge port 10 to enter the cylinder.

The purifier utilizes the condensation principle and the gravity principle of gaseous substances, and a device with the environment (temperature and air pressure) similar to the air chamber is arranged before tail gas enters the air chamber (an air filter or an air inlet pipe) from the breather valve, and the temperature and the air pressure of the device are both smaller than those in the crankcase. In the exhaust gasImpurity H₂O is separated out from the tail gas due to the reduction of temperature, jelly is separated out from the tail gas due to the reduction of pressure, the O and the jelly are stored in the purifier in the form of liquid mixture under the action of gravity, and when the impurity liquid is stored to a certain amount, the impurity liquid is discharged through a liquid discharge valve. The condensation point of the combustible gas (hydrocarbon organic matters and oxygen) in the tail gas is lower than the normal temperature, and the combustible gas can smoothly pass through the purifier under the action of airflow and enters the air chamber to participate in combustion again to do work.

Claims

1. A four-stroke engine recirculation exhaust purifier, characterized by: the container is divided into an upper cavity and a lower cavity by a partition board (9), a vent hole (3) is formed in the partition board (9), the outer walls (1) of the upper cavity and the lower cavity are respectively provided with an air outlet and an air inlet (10) and an air inlet (8), the air outlet and the air inlet (10) are connected with a rubber tube, a fan blade (4) and a stirring arm (5) are fixed in the lower cavity, the fan blade (4) is arranged on the upper part, the stirring arm (5) is arranged on the lower part and coaxially fixed with the fan blade (4), the fanblade (4) is opposite to the air inlet (8) on the wall of the lower cavity, a sundry discharge port is formed in the bottom of the.

2. The purifier of claim 1, wherein: the upper cavity and the lower cavity are detachably connected through threads.