Method and apparatus for servicing engine cooling systems
AssigneeMotorvac Technologies, Inc.
InventorsJohn Rome, Eduardo Betancourt
Life of this patent
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Abstract
Method and apparatus, for servicing engine cooling systems, including a service inlet, a vacuum pump, a two-way solenoid interposed between the vacuum pump and the service inlet, a service outlet, a disposal hose, a new fluid tank, a pressure pump interposed between the service outlet and the new fluid tank, a three-way solenoid interposed between the service outlet and the two-way, solenoid, a low-level trigger mechanism, a flow control relief valve and other elements to enhance various modes of operation. The apparatus is capable of performing various operations, including closed-loop fluid cycle, fluid vacuum, fluid top-off, fluid exchange and fluid flow control.
Claims25
A service apparatus for servicing a system, said apparatus comprising:
- a service inlet
- a first pump;
- a service outlet;
- a fluid tank;
- a second pump interposed between said service outlet and said fluid tank;
- and
- a second solenoid interposed between said service outlet and said first solenoid;
- wherein an inlet of said fist solenoid is connected to an inlet of said second solenoid, without said service apparatus being connected to said system.
A service apparatus for servicing a system said apparatus comprising:
- a service inlet;
- a first pump;
- a first solenoid interposed between said first pump and said service inlet
- a service outlet;
- a fluid tank;
- a second pump interposed between said service outlet and said fluid tank;
- and
- a second solenoid interposed between said service outlet and said first solenoid;
- wherein said second solenoid is a three-way solenoid coupled at a first outlet to said service outlet, at a second outlet to an output of said first pump and at an inlet of said second solenoid to said service inlet.
A method of servicing a system having an inlet and an outlet, said method comprising the steps of:
- connecting a service inlet of a service apparatus to said system outlet;
- connecting a service outlet of said apparatus to said system inlet;
- initiating a fluid-replacement process including the steps of:
- pumping out a first fluid from said system through said system outlet and said service inlet;
- and
- pumping in, simultaneously with said pumping out step, a second fluid from a second fluid tank to said system through said system service outlet and said service system inlet;
- terminating said fluid-replacement process;
- and
- cycling said second fluid, pumped into said system, through said apparatus, after said terminating step.
A service apparatus for servicing a system having an inlet and an outlet, said apparatus comprising:
- a service inlet for receiving fluid from said system outlet;
- a service outlet coupled to said service inlet and directing said fluid to said system inlet;
- a filter;
- and
- a solenoid;
- wherein said fluid cycles through said service apparatus and said system, and wherein said filter is coupled at one end to said service inlet and at another end to a first end of said solenoid, and wherein a second end of said solenoid is coupled to said service outlet.
A service apparatus for servicing a system having an inlet and an outlet, said apparatus comprising:
- a service inlet for receiving fluid from said system outlet;
- a service outlet coupled to said service inlet and directing said fluid to said system inlet;
- a filter;
- and
- a solenoid;
- wherein said fluid cycles through said service apparatus and said system, and wherein said filter is coupled at one end to said service inlet and at another end to a first end of said solenoid, a second end of said solenoid is coupled to one end of a check valve, and wherein another end of said check valve is coupled to said service outlet.
Dependencies are inferred from the claim text.