Patent Application
20140137959
The present invention generally relates to an automobile part, and more particularly to a fuel supply device and a fuel-returning three-way pipe thereof.
In the progress of living technology of human beings, automobiles are undoubtedly a measure that satisfies people's desires of efficient transportation and also suits people's need for comforts of travelling. In the early days, air pollution caused by the operations of automobiles was generally not an issue of concern and improvement of automobile performance has not been taken seriously for achieving the goal of green energy and environmental protection.
Recently, with the development of a trend for protecting the global environment, it is becoming an issue concerning green energy trend of the development of automobiles to reduce air pollution caused by automobiles and to improve the operations of the automobiles for reducing consumption of energy resources. With the resources of fossil energy being gradually consumed up, people are now more interested in reducing fuel consumption and improving operation efficiency. Thus, all the manufacturers of the industry are devoted themselves in developing technology and solutions for reducing fuel consumption and improving operation efficiency.
In view of the above issues, an object of the present invention is to provide a fuel supply device and a fuel-returning three-way pipe thereof, wherein heated fuel returning from an engine is effectively utilized to achieve the purposes of saving energy and improving engine operation efficiency.
To achieve the above and other objects, the present invention provides a fuel supply device, which is fit to supply a fuel necessary for the power of an engine. The engine comprises a hand-operating pump inlet, a hand-operating pump outlet, a high-pressure pump fuel inlet port, and a fuel return port. The fuel supply device comprises: a fuel tank, a filter can, and a fuel-returning three-way pipe.
The fuel tank is connected to the hand-operating pump inlet of the engine to store the fuel necessary for the power of the engine. The filter can comprises an inlet opening and an outlet opening. The inlet opening is connected to the hand-operating pump outlet of the engine. The fuel-returning three-way pipe comprises a priority terminal, a slope terminal, and a discharge terminal. The priority terminal is connected to the fuel return port of the engine. The slope terminal is connected to the outlet opening of the filter can. The discharge terminal is connected to the high-pressure pump fuel inlet port of the engine to supply, with priority, heated fuel from the engine the fuel return port through the discharge terminal to the engine for combustion for saving energy and effectively improving operation performance of the engine.
The fuel-returning three-way pipe comprises: a three-way pipe body and a core fitting. The three-way pipe body comprises the priority terminal, the slope terminal, and the discharge terminal discussed above. A straight passage is formed between the priority terminal and the discharge terminal. The slope terminal forms a slope passage that forms an angle with respect to the straight passage. The core fitting comprises a connection end and a passage end. The connection end is inserted into and connected to the priority terminal of the three-way pipe body. The passage end has an outside diameter that is smaller than an inside diameter of the straight passage. The passage end is arranged to extend, in a direction toward the discharge terminal of the three-way pipe body, beyond the slope passage of the slope terminal.
In the instant embodiment, the three-way pipe body of the fuel-returning three-way pipe of the fuel supply device comprises a Y-shaped body and three pipe fittings. The Y-shaped body comprises a first end, a second end, and a third end. The three pipe fittings are respectively connected to the first end, the second end, and the third end of the Y-shaped body to form the priority terminal, the slope terminal, and the discharge terminal of the three-way pipe body. The angle formed between the straight passage and the slope passage of the three-way pipe body is preferably between 30 and 60 degrees.
In summary, the present invention provides a fuel supply device and a fuel-returning three-way pipe thereof; wherein returned heated fuel from an engine is supplied, with priority, to the engine for effective recovery and reuse and for avoiding any evaporation and waste of the heated fuel in the recovery process so that it is possible to achieve both saving of energy and improvement of operation performance of engine.
The foregoing objectives and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself; all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.
Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
The following descriptions are exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.
Referring to
The fuel tank 11 is connected to the hand-operating pump inlet 31 of the diesel engine 30 and functions to store therein the fuel necessary for the engine power. The filter can 12 comprises an inlet opening 121 and an outlet opening 122. The inlet opening 121 is connected to the hand-operating pump outlet 32 of the diesel engine 30. The fuel-returning three-way pipe 13 comprises a priority terminal 131, a slope terminal 132, and a discharge terminal 133. The priority terminal 131 is connected to the fuel return port 34 of the diesel engine 30. The slope terminal 132 is connected to the outlet opening 122 of the filter can 12. The discharge terminal 133 is connected to the high-pressure pump fuel inlet port 33 of the diesel engine 30 to conduct heated fuel from the fuel return port 34 of the engine through the discharge terminal 133 for supply, with priority, to the diesel engine 30 for combustion therein in order to save energy and effectively improve the operation performance of the engine.
Referring to
The Y-shaped body 134 comprises a first end 1345, a second end 1346, and a third end 1347. The three pipe fittings 135, 136, 137 are respectively connected, through mated internal and external threads (not shown), to the first end 1345, the second end 1346, and the third end 1347 of the Y-shaped body 134 to form the priority terminal 131, the slope terminal 132, and the discharge terminal 133 of the three-way pipe body 15 of the fuel-returning three-way pipe 13.
As shown in
In the instant embodiment, to prevent the fuel or the returned heated fuel from forming turbulences in the three-way pipe body 15 and thus affecting smooth supply of fuel, the passage end 1302 of the core fitting 130 is further extended into the pipe fitting 137 of the third end 1347 of the Y-shaped body 134, whereby a flow channel arrangement including an inner core channel and an outer annular channel is formed in the pipe fitting 137 to respectively conduct the returned heated fuel and the fuel directly from the fuel tank 11 to smoothly pass therethrough.
It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.
While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 101222629 | Nov 2012 | TW | national |
