Method of cleaning internal combustion engine cooling system and filter for use therein
OwnerGeorge R. Sturmoninventor
Life of this patent
Estimating the term…
Abstract
A method for cleaning and protecting a diesel cooling system from corrosion and the effects of the corrosive by-products wherein a filter is used to feed a dissolvable pellet comprising dissolvable cleaning agents and corrosion inhibiting agents into the cooling system. The cleaner consists of chelating agents, surfactants, and anti-foaming agents. The filter is removably inserted in the cooling system, and the cleaners and inhibitors dissolve in the coolant to clean and protectively coat the cooling system while the engine is operating. The removed impurities are captured by the filter and the filter is replaced within a few weeks with a standard filter containing inhibiting agents. The method thus does not require draining the cooling system to clean the cooling system.
Claims20
A method for cleaning gel and corrosion products from a cooling system of an internal combustion engine, the method comprising attaching into the cooling system a filter containing at least one chelant cleaning agent, and operating the engine to disperse the cleaning agent throughout the cooling system to remove corrosion products and gel from the system, the amount of cleaning agent in the filter being chosen to produce a concentration of cleaning agent in the circulating coolant of at least one-half part per thousand, by weight.
A filter for cleaning the cooling system of an internal combustion engine of gel and corrosion products which have formed therein, said filter comprising a cleaning agent for removing corrosion from the surfaces of said cooling system when said filter is connected into said cooling system, said cleaning agent being in a dry, solid form, said cleaning agent including with at least one ounce of a chelating agent to clean said cooling system, sufficient of a liquid sequestering agent to form said cleaning agent into a dry pellet, and a substance for maintaining coolant in said cooling system at an alkaline pH.
A method for cleaning gel and corrosion products from a cooling system of an internal combustion engine and maintaining the cooling system in a protected state, the method comprising a first step of attaching into the cooling system a filter containing an alkaline cleaning and protective mixture including at least one ounce of chelant, a plurality of corrosion inhibiting agents, and means to maintain the cooling system at an alkaline pH, a step of operating the engine to disperse the cleaning agent throughout the cooling system to remove corrosion products and gel from the system, and thereafter a third step of replacing the filter with a second filter containing a plurality of corrosion inhibiting agents and means to maintain the cooling system at an alkaline pH, the second filter containing less than one ounce of chelant, the third step being carried out without draining the cooling system.
Dependencies are inferred from the claim text.