초록 ▼

A coolant filter for a diesel engine having a mechanism for delayed release of chemical additives into the coolant being filtered. The present invention provides a spin-on canister type coolant filter which combines the functions of filtering the coolant of the diesel engine cooling system with the

A coolant filter for a diesel engine having a mechanism for delayed release of chemical additives into the coolant being filtered. The present invention provides a spin-on canister type coolant filter which combines the functions of filtering the coolant of the diesel engine cooling system with the function of adding supplemental coolant additives to the coolant to reduce or eliminate the effects of cavitation erosion caused by vibration of the cylinder liners of the diesel engine. The filter includes a chemical additive cartridge mounted within an outer shell and a filter cartridge mounted about the chemical additive cartridge and inside the outer shell. Coolant to be filtered passes by the chemical additive cartridge, which slowly releases the chemical additive into the passing coolant stream. The coolant containing the chemical additive then passes through the filter to remove relatively large pieces of the chemical additive as well as other debris before exiting the filter for subsequent cooling of the diesel engine. In order to slowly release the chemical additive, the chemical cartridge includes relatively small air vents and outlets and the filter outlet includes a restriction orifice which further slows the release of the chemical additive into the coolant stream.

대표청구항 ▼

[ What is claimed is:] [1.] A coolant filter with a delayed released chemical additive, comprising:an outer housing defining a filter chamber having an inlet and an outlet;a stand alone chemical additive cartridge positioned within the outer housing, a supplemental coolant additive deposited within

[ What is claimed is:] [1.] A coolant filter with a delayed released chemical additive, comprising:an outer housing defining a filter chamber having an inlet and an outlet;a stand alone chemical additive cartridge positioned within the outer housing, a supplemental coolant additive deposited within the cartridge, the cartridge including an air vent and an outlet, coolant adapted to flow into the outer housing through the housing inlet and past the cartridge outlet, the supplemental coolant additive thereby being released into the coolant through the cartridge outlet, the size of the cartridge outlet being selected to provide a predetermined controlled release rate of supplemental coolant additive into the coolant; anda filter media positioned within the outer housing downstream of the chemical additive cartridge coolant containing the supplemental coolant additive adapted to flow through the filter media and out of the filter through the outer housing outlet.