초록 ▼

An apparatus includes a closed container having an inlet connected to a radiator of an engine cooling system. An outlet of the container is coupled to the suction port of a venturi that has an inlet port connected by a solenoid valve to a source of pressurized air. A controller opens the solenoid va

An apparatus includes a closed container having an inlet connected to a radiator of an engine cooling system. An outlet of the container is coupled to the suction port of a venturi that has an inlet port connected by a solenoid valve to a source of pressurized air. A controller opens the solenoid valve for a given interval whenever the engine is turned off. That action creates a negative pressure in the container which bleeds gas from the radiator. Any coolant that also is removed from the radiator is collected in the container.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for removing gas from a cooling system of an engine, said apparatus comprising:a closed collection container having an inlet and an outlet;drain conduit connecting the cooling system to the inlet of the closed collection container;a source of suction coupled

[ What is claimed is:] [1.] An apparatus for removing gas from a cooling system of an engine, said apparatus comprising:a closed collection container having an inlet and an outlet;drain conduit connecting the cooling system to the inlet of the closed collection container;a source of suction coupled to the outlet of the closed collection container and responding to a control signal by creating a given pressure in the closed collection container that is less than pressure within the cooling system, thereby drawing the gas into the closed collection container from the cooling system;a controller which produces the control signal; anda transducer that senses pressure in the cooling system and produces a pressure signal,wherein the controller produces the control signal in response to the pressure signal.