Temperature control system for supercharged internal combustion engine

Claim 2

In a supercharged internal combustion engine including compressor means driven by the engine for supplying a pressurized air input to the cylinders of said engine at a pressure higher than that of atmospheric pressure, a cooling means for said air, a first conduit means between said compressor means and said cooling means, a second conduit means connected between said cooling means and said cylinders of the engine, the improvement comprising a bypass means connected between said first and said second conduits, said bypass means responsive to the pressure level of saiD air input for selectively bypassing from said cooling means a predetermined portion of said pressurized air input, whereby the temperature of the air entering said cylinders is controllable as a function of pressure in said cooling means, and a pressure biasing means operatively connected to said bypass means for controlling its operation responsive to changes in ambient air temperature.

Claim 3

The combination as defined in claim 1 and in which said pressure biasing means comprises a vent port connected with said bypass means, a valve member movable toward and away from said vent port to regulate the rate of flow through said vent port, and a temperature sensing means connected with said valve to regulate the position thereof in accordance with ambient temperature values.

Claim 4

In a supercharged internal combustion engine including a supercharger for supplying a pressurized air input to the cylinders of the engine at a pressure substantially higher than that of the atmosphere, a cooling chamber for said air, a first conduit means connected between said supercharger and said cooling means, a second conduit means connected between said cooling means and said cylinder, wherein the improvement comprises a bypass valve connected between said first and said second conduits and having its movable valve operator extending into said second conduit and displaceable responsive to the level of air pressure therein, wherein said bypass valve operator includes a spring biased closure member differentially movable to cover and uncover said port between said first and second conduits, and wherein a force biasing means is connected to said operator of said bypass valve for further controlling its differential movement responsive to predetermined changes in ambient temperature.

Claim 5

In a supercharged internal combustion engine including a supercharger for supplying a pressurized air input to the cylinders of the engine at a pressure substantially higher than that of the atmosphere, a cooling chamber for said air, a first conduit means connected between said supercharger and said cooling means, a second conduit means connected between said cooling means and said cylinder, wherein the improvement comprises a bypass valve connected between said first and said second conduits and having its movable valve operator extending into said second conduit and displaceable responsive to the level of air pressure therein, wherein said bypass valve operator includes a spring biased closure member differentially movable to cover and uncover said port between said first and second conduits, and wherein a force biasing means is connected to said operator of said bypass valve for further controlling its differential movement responsive to predetermined changes in ambient temperature.

Claim 6

The combination as set forth in claim 3 wherein said force biasing means comprises a valve for providing a back pressure to said bypass valve and a temperature sensing means, said valve operatively connected to and controlled by said temperature sensing means for providing a variable back pressure to said valve operator responsive to change in level of ambient temperature.

Claim 7

The combination as defined in claim 3 and in which said valve is disposed adjacent a vent port and is movable toward and away from said vent port to regulate exhaust from said vent port and thereby regulate back pressure to said bypass valve, and said temperature sensing means comprising bimetallic members connected to said valve to move said valve toward and away from said vent port in accordance with changes in ambient temperature.

Claim 8

In a supercharged engine including a supercharger driven by the engine for supplying a pressurized air input to the cylinders of the engine at a superatmospheric pressure, a cooling means for said air, a manifold including a first conduit means between said supercharger and said cooling means, a second conduit means connected between said cooling means and said cylinders, and a third conduit communicating directly between said first and said second conduits, wherein the improvement comprises a bypass valve operatively connected in said third conduit and having a valve operator connected to and responsive to air pressure level of said manifold; a temperature responsive means operatively connected to said valve for providing a back pressure thereto, which pressure is a function of ambient air temperature, said temperature responsive means comprising a bleed valve operatively connected to the operator of said valve; and a bimetallic temperature sensitive device operatively connected to and controlling said bleed valve responsive to changes in ambient air temperature.

Claim 9

In a supercharged engine including a supercharger driven by the engine for supplying a pressurized air input to the cylinders of the engine at a superatmospheric pressure, a cooling means for said air, a manifold including a first conduit means between said supercharger and said cooling means, a second conduit means connected between said cooling means and said cylinders, and a third conduit communicating directly between said first and said second conduits, wherein the improvement comprises a bypass valve operatively connected in said third conduit and having a valve operator connected to and responsive to air pressure level of said manifold; a temperature responsive means operatively connected to said valve for providing a back pressure thereto, which pressure is a function of ambient air temperature, said temperature responsive means comprising a bleed valve operatively connected to the operator of said valve; and a bimetallic temperature sensitive device operatively connected to and controlling said bleed valve responsive to changes in ambient air temperature.