This invention relates to an inlet for air from the atmosphere into an internal combustion engine attached particularly before the engine air filter and after the combustion engine.
In order to be leading in current technology, an internal combustion engine mounted in automotive vehicles should reveal a good performance. To have a good performance, an internal combustion engine should have a sufficient acceleration and an optimal use of fuel. These requirements can be met by improving quality of the combustion process of air-fuel mixture within the engine.
Another way of improving the quality of combustion process of air-fuel mixture within an automotive engine is to improve the quality of air-fuel mixture. A qualified combustion process of air-fuel mixture requires that an agitating effect should occur within the mixture. An agitating effect is a phenomenon triggered and left by a stirring effect in air before the air is mixed with the fuel.
The stirring effect is recently produced by providing auxiliaries such as grooves in the air inlet. The grooves are of many types and each has its own advantage and drawback.
The prior art related to this present invention is Air-Stirring Device for Automotive Vehicles (PCT/IB99/00029).
This invention thus improves the quality of air-fuel mixture by generating a twisting effect, maintain it as long as possible and increase the turbulency of the air-fuel mixture leaving the outlet-side of the air-stirring blade.
As disclosed above, the subject of this invention is a device which enables the atmosphere to flow turbulently into the engine of automotive vehicles. Compared with the prior art cited above, i.e., PCT/1B99/00029, one of the advantages possessed by embodiments of the present invention is an increasing turbulency of the air-fuel mixture leaving the outlet part of this air-stirring blade due to lesser air-resistance or loss of head.
The location of this air stirring blade with carburetor within an automotive engine is shown schematically in FIG. 1. Air-stirring blade (F) is mounted after or on air channel (B) and before carburetor (C).
The preferred embodiment of this invention (shown in
a is a perspective cut-out view of yet another embodiment, showing an air-stirring device which is provided with lips on its body;
b is a perspective cut-out view of yet another embodiment, showing an air stirring device acting as a joint for air channel;
c is a perspective cut-out view of another embodiment, showing an air stirring device which is integrally constructed with an air channel;
This invention improves the performance of an automotive engine without any significant changes in the previous design of the engine. A satisfied result in the form of a well stirred air flowing into the automotive engine can be performed by optionally attaching an air-stirring device on the engine.
Air-stirring device that can be attached without necessarily changing the engine construction has been disclosed in PCT/1B99/00029.
The turbulency of the air-fuel mixture leaving the outlet part of the air-stirring device disclosed in PCT/IB99/00029 is considerably lower than that of embodiments according to this invention.
Based on that fact, embodiments of this present invention ensures as well as increases the turbulency of the air-fuel mixture leaving the outlet part of the device disclosed in PCT/1B99/00029 by means of a twisted air channel (5) attached on the solid portion of the air-stirring device disclosed in PCT/IB99/00029.
The attachment of an embodiment of the air-stirring device presently invented on an internal combustion engine is shown in FIG. 1. This air-stirring device (F) is attached after the air channel (B) or on the air channel (B) but before the carburetor (C). Such position of attachment is intended to provide an airflow which has been twisted before entering the carburetor (C). Since the air has been twisted before entering the carburetor (C), the air-fuel mixture entering the engine combustion chamber (E) will have been twisted as well as agitated. To achieve an optimal agitating effect, this air-stirring device (F) is attached in an internal combustion engines not in one place only, but in other places as well, such as on the air channel (B) or in the front of an intake manifold (D).
The preferred embodiment of this invention (shown in
Tests are conducted by comparing measured parameters of an internal combustion engine mounted on powered vehicles using an injection system on standard condition (without an air-stirring device), using an air-stirring device disclosed in PCT/1B99/00029, and using an embodiment of the air-stirring blade presently invented. The parameters were measured for each condition under specified rpms of the internal combustion engine. Parameters observed in the test are the time needed to use up 25 ml of fuel, the engine rpm at that time and the related power of the engine. Power is measured by dynamometer.
The data obtained are tabulated in FIG. 6. The fuel consumed per second calculated from data shown in
a shows another modification of this embodiment of the invention where the body (1) is equipped with an additional lip (6).
b is another modification of this embodiment of the invention in which the blade acts as a joint for an air channel, and
In one embodiment, most of those modifications are made of nonmetal materials such as polymer. Only a few of them are made of metal.
It should necessarily be understood that the scope of this invention is not limited by the embodiments represented by the appended drawings. All modifications made by the people skilled in this art are still part of this invention as long as the principles underlying the modifications still exist within the scope of the invention.
This application is a continuation application of International Application Number PCT/IB01/01198, filed Jun. 29, 2001.
Number | Name | Date | Kind |
---|---|---|---|
2740392 | Hollingsworth | Apr 1956 | A |
3395899 | Kopa | Aug 1968 | A |
3437467 | Jacobus | Apr 1969 | A |
4151816 | SchrOder | May 1979 | A |
4672940 | Nakayama et al. | Jun 1987 | A |
5113838 | Kim | May 1992 | A |
6536420 | Cheng | Mar 2003 | B1 |
6796296 | Kim | Sep 2004 | B2 |
20010001388 | Buswell et al. | May 2001 | A1 |
20030150439 | Hsu | Aug 2003 | A1 |
20040031471 | Leuenberger | Feb 2004 | A1 |
Number | Date | Country |
---|---|---|
347113 | Jan 1928 | BE |
30 02 325 | Jul 1981 | DE |
WO 9402735 | Feb 1994 | WO |
WO 0006889 | Feb 2000 | WO |
Number | Date | Country | |
---|---|---|---|
20040206330 A1 | Oct 2004 | US |
Number | Date | Country | |
---|---|---|---|
Parent | PCT/IB01/01198 | Jun 2001 | US |
Child | 10789356 | US |