Installation for venting the cooling liquid of an internal compustionengine

Claim 2

An installation for venting the cooling liquid of an internal combustion engine comprising: an expansion tank means including a filling chamber and a lower collecting chamber, a main circulatory system of the cooling liquid, an auxiliary circulatory system of the cooling liquid connected in parallel to said main circulatory system and to said expansion tank means, said auxiliary circulatory system including a first vent line means connected to a first point in said main circulatory system and to the interior space of said lower collecting chamber and a filling vent line means connected to a further point in said main circulatory system and to the interior space of said collecting chamber for conveying the cooling liquid from the interior space of said collecting chamber to said main circulatory system, a third vent line means havIng one end connected to at least one geodetic high-point of said main circulatory system for the operational filling and venting, the other end of said third vent line means terminating in the interior space of said filling chamber, means for selectively sealing said filling chamber from the atmosphere, and venting means for establishing a venting connection between said filling chamber and said lower collecting chamber for operation venting and filling venting, said venting means including a one-way check-valve means opening into said collecting chamber for the operating venting process and additional means for selectively sealing said filling chamber from said lower collecting chamber for the filling venting process.

Claim 3

An installation according to claim 1, including a radiator having an upper water box wherein said geodetic high-point is formed by said upper water box.

Claim 4

An installation according to claim 1, wherein said one-way valve is disposed in an opening provided between of said filling chamber and said lower collecting chamber, and wherein said additional sealing means includes a loosely disposed valve seat plate means for selectively covering said opening, edge means on said opening means for sealingly engaging said valve seat plate means, means for biasing said valve seat plate means into engagement with said edge means, said means for biasing being disposed between said valve seat plate means and said means for selectively sealing said filling chamber.

Claim 5

An installation according to claim 1, further including means connecting said sealing means for said filling chamber and said additional sealing means to substantially simultaneously release said sealing means and said additional sealing means.

Claim 6

An installation for venting a cooling liquid of an internal combustion engine comprising: an expansion tank means, a main circulatory system of the cooling liquid, an auxiliary circulatory system of the cooling liquid connected in parallel to said main circulatory system and to said expansion tank means, a universal vent line means connected to at least one geodetic high-point of said main circulatory system for the operational and filling venting, said universal vent line means terminating in a chamber of a filler pipe disposed in the interior space of said expansion tank, a filler pipe closure means for selectively connecting or closing off said expansion tank means with respect to the atmosphere, and a one-way check valve means for preventing the flow from said expansion tank means to said geodetic high-point connected effectively between a high-point of said universal vent line means and the interior space of said expansion tank means by closing off said filler pipe chamber from said interior space of said expansion tank means.

Claim 7

An installation for venting a cooling liquid of an internal combustion engine comprising: an expansion tank means, a main circulatory system of the cooling liquid, an auxiliary circulatory system of the cooling liquid connected in parallel to said main circulatory system and to said expansion tank means, a universal vent line means connected to at least one geodetic high-point of said main circulatory system for the operational and filling venting, said universal vent line means terminating in a chamber of a filler pipe disposed in the interior space of said expansion tank, a filler pipe closure means for selectively connecting or closing off said expansion tank means with respect to the atmosphere, and a one-way check valve means for preventing the flow from said expansion tank means to said geodetic high-point connected effectively between a high-point of said universal vent line means and the interior space of said expansion tank means by closing off said filler pipe chamber from said interior space of said expansion tank means.

Claim 8

An installation according to claim 5, including a radiator having at least an upper water box, wherein said geodetic high-point of the main circulatory system is formed by said upper water box.

Claim 9

An installation according to claim 5, wherein said one-way check-valve means includes a spring-loaded valve plate provided with an annular seal pressed against a valve ring seat formed by the filler pipe closure means.

Claim 10

An installation according to claim 7, wherein said one-way check-valve is operable to selectively open and close an aperture in said spring-loaded valve plate.

Claim 11

An installation according to claim 8, including a thermostat valve wherein an operational vent line is provided having one end thereof connected at a point in the main circulatory system between the engine and said thermostat valve and the other end thereof terminating in said expansion tank means at a point below the lowest permissive cooling liquid level.

Claim 12

An installation according to claim 9, including a radiator and a by-pass line wherein said main circulatory system includes a pump connected between said radiator and said bypass line, and a line connecting said expansion tank means with said main circulatory system between saId pump and outlet of said radiator.

Claim 13

An installation for venting the cooling liquid of an internal combustion engine comprising: an expansion tank means, a main circulatory system of the cooling liquid, an auxiliary circulatory system of the cooling liquid connected in parallel to said main circulatory system and to said expansion tank means, a first vent line means connected to at least one geodetic high-point of said main circulatory system for operational filling and venting, said first vent line means terminating in the interior space of said expansion tank means, said auxiliary circulatory system including a second vent line means connected to another point in said main circulatory system and to the interior space of said expansion tank means for conveying at least a portion of the cooling liquid to said expansion tank means, filling vent line means connected to a further point in said main circulatory system and to the interior space of said expansion tank means for conveying the cooling liquid from the interior space of said expansion tank means to said main circulatory system, means for selectively connecting or closing off said expansion tank means with the atmosphere, a one way check-valve means disposed in the interior space of said expansion tank means for preventing the flow through said first vent line means from said expansion tank means to said geodetic high-points of said main circulatory system, and a thermostat valve provided in said main circulatory system, said second vent line means being an operational vent line having one end thereof connected at a point in the main circulatory system between the engine and said thermostat valve and the other end thereof terminating in said expansion tank means at a point below the lowest permissive cooling liquid level.

Claim 14

An installation for venting the cooling liquid of an internal combustion engine comprising: an expansion tank means, a main circulatory system of the cooling liquid, an auxiliary circulatory system of the cooling liquid connected in parallel to said main circulatory system and to said expansion tank means, a first vent line means connected to at least one geodetic high-point of said main circulatory system for operational filling and venting, said first vent line means terminating in the interior space of said expansion tank means, said auxiliary circulatory system including a second vent line means connected to another point in said main circulatory system and to the interior space of said expansion tank means for conveying at least a portion of the cooling liquid to said expansion tank means, filling vent line means connected to a further point in said main circulatory system and to the interior space of said expansion tank means for conveying the cooling liquid from the interior space of said expansion tank means to said main circulatory system, means for selectively connecting or closing off said expansion tank means with the atmosphere, a one way check-valve means disposed in the interior space of said expansion tank means for preventing the flow through said first vent line means from said expansion tank means to said geodetic high-points of said main circulatory system, and a thermostat valve provided in said main circulatory system, said second vent line means being an operational vent line having one end thereof connected at a point in the main circulatory system between the engine and said thermostat valve and the other end thereof terminating in said expansion tank means at a point below the lowest permissive cooling liquid level.

Claim 15

An installation for venting the cooling liquid of an internal combustion engine comprising: an expansion tank means, a main circulatory system of the cooling liquid, an auxiliary circulatory system of the cooling liquid connected in parallel to said main circulatory system and to said expansion tank means, a first vent line means connected to at least one geodetic high-point of said main circulatory system for the operational and filling venting, said first vent line means terminating in the interior space of said expansion tank means, said auxiliary circulatory system including a second vent line means connected to another point in said main circulatory system and to the interior space of said expansion tank means for conveying at least a portion of the cooling liquid to said expansion tank means, a filling vent line means connected to a further point in said main circulatory system and to the interior space of said expansion tank means for conveying the cooling liquid from the interior space of said expansion tank means to said main circulatory system, means for selectively connecting or closing off said expansion tank means with the atmosphere, a one-way check-valve means disposed in the interior space of said expansion tank means for preventing the flow through said first vent line means from said expansion tank means to said geodetic high-points of said main circulatory system, a radiator, and a by-pass line, said main circulatory system including a pump connected between said radiator and said by-pass line, said third vent line means being connected with said main circulatory system between said pump and the outlet of said radiator.

Claim 16

An installation for venting the cooling liquid of an internal combustion engine comprising: an expansion tank means, a main circulatory system of the cooling liquid, an auxiliary circulatory system of the cooling liquid connected in parallel to said main circulatory system and to said expansion tank means, a first vent line means connected to at least one geodetic high-point of said main circulatory system for the operational and filling venting, said first vent line means terminating in the interior space of said expansion tank means, said auxiliary circulatory system including a second vent line means connected to another point in said main circulatory system and to the interior space of said expansion tank means for conveying at least a portion of the cooling liquid to said expansion tank means, a filling vent line means connected to a further point in said main circulatory system and to the interior space of said expansion tank means for conveying the cooling liquid from the interior space of said expansion tank means to said main circulatory system, means for selectively connecting or closing off said expansion tank means with the atmosphere, a one-way check-valve means disposed in the interior space of said expansion tank means for preventing the flow through said first vent line means from said expansion tank means to said geodetic high-points of said main circulatory system, a radiator, and a by-pass line, said main circulatory system including a pump connected between said radiator and said by-pass line, said third vent line means being connected with said main circulatory system between said pump and the outlet of said radiator.