US 6,637,468 B1 · High speed engine coolant flush and filtration system and method

Abstract

A high-speed cleaning system and method in which a liquid is injected by-compressed air into the vacuumed chambers in the automotive cooling systems, in water-cooled engines. The liquid is injected in short period time under pressure, and the cooling system is pre-evacuated and held at a vacuum so that there is no flow restriction to build up high pressure in the cooling system in the short period of time the liquid is injected in the cooling system, and the liquid travels through the cooling system at a high rate of speed. High pressure air is mixed with the liquid before it is injected into engine cooling system, where the liquid/air mixture travels at a high rate of speed creating a hurricane type effect that breaking loose contaminants such as dirt, rust, and other particles and washes them out of the engine cooling system.

Claims26

Dependent claims

An apparatus for flushing contaminants from an internal combustion engine cooling system that includes a cooling radiator and a heating radiator both connected to an engine block with liquid coolant lines, the flushing apparatus comprising:

an injection hose terminating in an injector that is connectable to the engine block to define an injection point into the engine cooling system;
an evacuation hose terminating in a connector assembly that is connectable to one of cooling radiator and the heating radiator to define a first extraction point from the engine cooling system;
a liquid supply for supplying liquid under pressure to the injection hose and the injection point;
a vacuum motor connected to the evacuation hose for applying a vacuum to the evacuation hose and the first extraction point;
a gas inlet for receiving compressed gas and for mixing the compressed gas with the liquid supplied by the liquid supply to form a liquid and gas mixture;
wherein the liquid and gas mixture enters the engine cooling system at the injection point, travels through the engine block and heating radiator and cooling radiator at a high rate of speed, and is extracted from the engine cooling system at the extraction point by the evacuation hose.

3 more elements

an injection hose terminating in an injector that is connectable to the engine block to define an injection point into the engine cooling system;
an evacuation hose terminating in a connector assembly that is connectable to one of cooling radiator and the heating radiator to define a first extraction point from the engine cooling system;
a liquid supply for supplying liquid under pressure to the injection hose and the injection point;
a vacuum motor connected to the evacuation hose for applying a vacuum to the evacuation hose and the first extraction point:
a gas inlet for receiving compressed gas and for mixing the compressed gas with the liquid supplied by the liquid supply to form a liquid and gas mixture;
wherein the liquid and gas mixture enters the engine cooling system at the injection point, travels through the engine block and heating radiator and cooling radiator at a high rate of speed, and is extracted from the engine cooling system at the extraction point by the evacuation hose;
and
wherein:
the liquid supply includes a pre-charge tank for supplying a predetermined amount of the liquid under pressure to the injection hose and the injection point;
and
the gas inlet includes a pre-charge tank bypass line for receiving compressed gas and mixing the compressed gas with the liquid supplied by the pre-charge tank to form the liquid and gas mixture.

8 more elements

Dependencies are inferred from the claim text.

High speed engine coolant flush and filtration system and method

Life of this patent

High speed engine coolant flush and filtration system and method

Life of this patent

Abstract

Claims26