Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Patent
1993-10-14
1996-05-14
Lacey, David L.
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
134 2218, 134 26, 134169a, 134169R, 123198A, B08B 900
Patent
active
055163700
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to fuel injection service units, and in particular, to a unit which is used to clean the fuel system of a motor vehicle.
BACKGROUND ART
When servicing fuel injected motor vehicles, to obtain a result that enables the user to clean the fuel system and fuel injectors of carbon deposits, and other impurities, such as water, expensive apparatus has been required. Complicated systems with a number of pumps where a solvent is mixed with the fuel prior to insertion into the fuel system ensure that the servicing and cleaning procedure is relatively difficult and expensive.
Another method of cleaning the fuel system of a fuel injected motor vehicle would to physically remove the fuel injectors and fuel system from the motor vehicle and clean the individual parts. This requires the costly and time-consuming dismantling of the fuel pump and injectors and is therefore not a cost effective proposition.
OBJECT OF THE INVENTION
It is an object of the present invention to provide a simple method and apparatus for servicing and cleaning fuel injection fuel systems which substantially overcomes or ameliorates the above mentioned disadvantages.
DISCLOSURE OF THE INVENTION
According to one aspect of the present invention there is disclosed an apparatus comprising a body connectable to the top of a container, said body having an inlet port and an outlet port communicating with the inside of said container, the inlet port having an opening into said container adjacent the top of said container while the outlet port is connected to a pipe which extends into said container and has an opening adjacent the bottom of said container, said apparatus being connectable into a fuel line of a motor vehicle, said inlet port being connectable on the fuel tank side and said outlet port being connectable on the engine side, wherein a cleaning fluid in said container is forced through said fuel system by the operation of the vehicle fuel pump to clean the system.
BRIEF DESCRIPTION OF THE DRAWINGS
Two embodiments of the present invention will now be described with reference to the drawings in which:
FIG. 1 is a schematic diagram of the apparatus of a first embodiment, and
FIG. 2 is a schematic diagram of the apparatus of a second embodiment.
BEST MODE OF CARRYING OUT THE INVENTION
As illustrated in FIG. 1, the apparatus 1 includes a container 2 which is screw fitted to an adaptor body 3. The adaptor body 3 has a female thread 4 which is compatible with a reciprocal male thread 5 on the container 2. The adaptor body 3 therefore fits on the top of the container 2. The adaptor body 3 is a solid piece of metal and has an inlet port 6 and an outlet port 7 drilled and tapped therein. The inlet port 6 comprises a horizontal portion 8 and a vertical portion 9. The horizontal portion 8 is the portion which is tapped and has a screwed connector 10 which fits thereto. The connector 10 has a quick snap-on bayonet fitting 11 on the outside of the adaptor body 3. The vertical portion 9 of the inlet port 6 communicates with the interior of the container 2 when the adaptor body 3 is screwed thereon. The inlet port 6 has its opening adjacent the top of the container 2.
The outlet port 7 has a horizontal portion 12 which is tapped and has a screwed connector 13 onto which a similar bayonet fitting 14 is attached on the outside of the adaptor body 3. The outlet port 7 has one vertical portion 15 which connects to an extension pipe 16 which has an opening adjacent the bottom of the container 2. This means that the contents of the container 2 adjacent its bottom is what exits from the container 2 via the outlet port 7 during use.
The outlet port 7 has a second vertical portion 17 which is tapped and into which a pressure gauge 18 is screwed. The pressure gauge 18 is used to indicate the pressure in the outlet port 7.
As illustrated in FIG. 1, the apparatus 1 is connected into the fuel line 21, 24 of a motor vehicle (not illustrated). The apparatus 1 further includes a pressure regulator 19 which is snapped onto the bayon
REFERENCES:
patent: 1787360 (1930-12-01), Cowherd
patent: 4784170 (1988-12-01), Romanelli et al.
patent: 4909207 (1990-03-01), Takano et al.
patent: 4977872 (1990-12-01), Hartopp
patent: 5257604 (1993-11-01), Vataru et al.
patent: 5287834 (1994-02-01), Flynn
Karnauchow Betty
Karnauchow Leonid
Lacey David L.
McQuillan John Q.
Vincent Sean
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