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A multi-port rotary valve used to distribute coolant to an engine cooling system comprises a valve body having a plurality of outlet ports for directing coolant flow to a radiator circuit, a heater circuit, and an auxiliary circuit. An internal gear driven rotary disc includes a gear driven mechanis

A multi-port rotary valve used to distribute coolant to an engine cooling system comprises a valve body having a plurality of outlet ports for directing coolant flow to a radiator circuit, a heater circuit, and an auxiliary circuit. An internal gear driven rotary disc includes a gear driven mechanism located on an inner circumference of the rotary disc. The rotary disc includes two apertures positioned on a top surface of the rotary disc for regulating predetermined flow paths and flow rates to the plurality of ports. An inlet housing body which includes an inlet port mates with the valve body and encases the rotary disc. An actuator which is coupled to a drive gear mounted internal to the inlet housing body is responsive to a control signal for transmitting a torque to the internal drive gear for rotating the rotary disc to regulate coolant flow.

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1. A multi-port rotary valve for distributing coolant to an engine cooling system comprising:a valve body having a plurality of outlet ports including a radiator port for directing coolant flow to a radiator circuit, a heater port for directing coolant flow to a heater circuit, said plurality of por

1. A multi-port rotary valve for distributing coolant to an engine cooling system comprising:a valve body having a plurality of outlet ports including a radiator port for directing coolant flow to a radiator circuit, a heater port for directing coolant flow to a heater circuit, said plurality of ports are located on a top surface of said valve body; an internal gear driven rotary disc including a gear driven mechanism located on an inner circumference of said rotary disc, wherein said rotary disc includes at least one aperture positioned on a top surface of said rotary disc for regulating predetermined flow paths and flow rates to said plurality of ports; an actuator responsive to a control signal for rotating said rotary disc to regulate said coolant flow to said plurality of ports; an inlet housing body mating with said valve body to encase said rotary disc, said inlet housing body including an inlet port; and a drive gear mounted internal to said inlet housing body residing in said coolant, said internal drive gear being received by said gear driven mechanism and coupled to said actuator, wherein a torque produced by said actuator is transmitted to said internal drive gear for rotating said rotary disc. 2. A multi-port rotary valve for distributing coolant to an engine cooling system comprising:a valve body having a plurality of outlet ports including a radiator port for directing coolant flow to a radiator circuit, a heater port for directing coolant flow to a heater circuit, said plurality of ports are located on a top surface of said valve body; a rotary gear driven disc including two apertures positioned on a top surface of said rotary disc for regulating predetermined flow paths and flow rates to said plurality of ports, and wherein a first aperture regulates jointly said radiator port and said heater port, and a second aperture regulates said auxiliary port; an actuator responsive to a control signal for rotating said rotary disc to regulate said coolant flow to said plurality of ports; an inlet housing body mating with said valve body to encase said rotary disc, said inlet housing body including an inlet port; a spring coupled to said rotary disc for urging the rotary disc to a failsafe position; and wherein said rotary disc is rotatable clockwise and counterclockwise from said failsafe position when said actuator is energized, wherein said spring overcomes said torque of said actuator to return to said failsafe position when said actuator is de-energized. 3. A multi-port rotary valve for distributing coolant to an engine cooling system comprising:a valve body having a plurality of outlet ports including a radiator port for directing coolant flow to a radiator circuit, a heater port for directing coolant flow to a heater circuit, an auxiliary port for directing coolant flow to an auxiliary circuit, said plurality of ports are located on a top surface of said valve body; an internal gear driven rotary disc including a gear driven mechanism located on an inner circumference of said rotary disc, wherein said rotary disc includes two apertures positioned on a top surface of said rotary disc for regulating predetermined flow paths and flow rates to said plurality of ports, and wherein a first aperture regulates jointly said radiator port and said heater port, and a second aperture regulates said auxiliary port; an actuator responsive to a control signal for rotating said rotary disc to regulate said coolant flow to said plurality of ports; an inlet housing body mating with said valve body to encase said rotary disc, said inlet housing body including an inlet port; and a drive gear mounted internal to said inlet housing body residing in said coolant, said internal drive gear being received by said gear driven mechanism and coupled to said actuator, wherein a torque produced by said actuator is transmitted to said internal drive gear for rotating said rotary disc. 4. The multi-port rotary valve of claim 3 further comprising a spring located about an axis between said rotary disc and said inlet housing;said spring includes a first end and a second end for placing said spring into a loaded state when said actuator transmits said torque to said external drive gear for rotating said rotary disc; said rotary disc includes a latch radially positioned at a first distance between said first end and said second end of said spring for circumferentially displacing one of said ends when in said loaded state; said inlet housing includes a stop radially positioned at a second distance between said first end and said second end for maintaining a fixed position of one of said ends when in said loaded state, said rotary disc includes a failsafe position when said spring is in a preloaded state; and wherein said rotary disc is rotatable clockwise and counterclockwise from said failsafe position when said actuator is energized, wherein said spring overcomes said torque of said actuator to return to said failsafe position when said actuator is de-energized. 5. The multi-port rotary valve of claim 3 wherein said first and second aperture are radially offset said rotary disc.6. The multi-port rotary valve of claim 5 wherein said radiator port and said heater port are positioned at a first radius on said valve body.7. The multi-port rotary valve of claim 6 wherein said auxiliary port is positioned at a second radius on said valve body.8. The multi-port rotary valve of claim 6 wherein said inlet port is positioned at said first radius on said inlet housing.9. The multi-port rotary valve of claim 3 wherein said actuator includes an electric motor.10. The multi-port rotary valve of claim 9 wherein said electric motor includes a stepper motor.11. The multi-port rotary valve of claim 3 wherein said auxiliary port comprises an oil cooler-port for supplying coolant to an oil-cooler circuit.12. The multi-pot rotary valve of claim 3 wherein said auxiliary port comprises a bypass port for supplying coolant to a bypass circuit.13. The multi-port rotary valve of claim 3 wherein said plurality of ports include protruding collars on an underside of said valve body, said protruding collars provide an adaptive hydraulic sealing force between said plurality of ports and said rotary disc.14. A multi-port rotary valve for distributing coolant to an engine cooling system comprising:a valve body having a plurality of outlet ports including a radiator port for directing coolant flow to a radiator circuit, a heater port for directing coolant flow to a heater circuit, an auxiliary port for directing coolant flow to an auxiliary circuit, said plurality of ports are located on a top surface of said valve body; a rotary gear driven disc including two apertures positioned on a top surface of said rotary disc for regulating predetermined flow paths and flow rates to said plurality of ports, and wherein a first aperture regulates jointly said radiator port and said heater port, and a second aperture regulates said auxiliary port; an actuator responsive to a control signal for rotating said rotary disc to regulate said coolant flow to said plurality of ports; an inlet housing body mating with said valve body to encase said rotary disc, said inlet housing body including an inlet port; a spring coupled to said rotary disc for urging the rotary disc to a failsafe position; and wherein said rotary disc is rotatable clockwise and counterclockwise from said failsafe position when said actuator is energized, wherein said spring overcomes said torque of said actuator to return to said failsafe position when said actuator is de-energized. 15. The multi-port rotary valve of claim 14 wherein said spring is located about an axis between said rotary disc and said inlet housing, said spring includes a first end and a second end for placing said spring into a loaded state when said actuator transmits torque to said rotary disc for rotating said rotary disc, wherein said rotary disc includes a latch radially positioned at a first distance between said first end and said second end of said spring for circumferentially displacing one of said ends when in said loaded state, and wherein said inlet housing includes a stop radially positioned at a second distance between said first end and said second end for maintaining a fixed position of one of said ends when in said loaded state.16. The multi-port rotary valve of claim 14 further comprising a drive gear mounted internal to said inlet housing body residing in said coolant, said rotary gear driven disc including a gear driven mechanism located on an inner circumference of said rotary disc, wherein said internal drive gear is received by said gear driven mechanism and coupled to said actuator, and wherein a torque produced by said actuator is transmitted to said internal drive gear for rotating said rotary disc.17. The multi-port rotary valve of claim 14 wherein said first and second aperture are radially offset said rotary disc.18. The multi-port rotary valve of claim 14 wherein said radiator port and said heater port are positioned at a first radius on said valve body.19. The multi-port rotary valve of claim 18 wherein said auxiliary port is positioned at a second radius on said valve body.20. The multi-port rotary valve of claim 18 wherein said inlet port is positioned at said first radius on said inlet housing.21. An engine cooling and heating system for a vehicle comprising:a pump for circulating a coolant; an engine including an engine coolant circuit; a radiator circuit for directing coolant flow through a radiator; a heater circuit for directing coolant flow through a heater core; an auxiliary circuit for directing coolant flow to said auxiliary circuit; a valve body having a plurality of outlet ports including a radiator port for directing coolant flow to said radiator circuit, a heater port for directing coolant flow to said heater circuit, an auxiliary port for directing coolant flow to said auxiliary circuit, said plurality of ports located on a top surface of said valve body; an internal gear driven rotary disc including a gear driven mechanism located on an inner circumference of said rotary disc, wherein said rotary disc includes two apertures positioned on a top surface of said rotary disc for regulating predetermined flow paths and flow rates to said plurality of ports, and wherein a first aperture regulates jointly said radiator port and said heater port, and a second aperture regulates said auxiliary port; an actuator responsive to a control signal for rotating said rotary disc to regulate said coolant flow to said plurality of ports; an inlet housing body mating with said valve body to encase said rotary disc, said rotary disc including an inlet port; a controller for providing a control signal to said actuator for regulating a rotational position of said rotary disc; a drive gear mounted internal to said inlet housing body residing in said coolant, said internal drive gear being received by said gear driven mechanism and coupled to said actuator, wherein a torque produced by said actuator is transmitted to said internal drive gear for rotating said rotary disc; wherein said predetermined flow paths include a plurality of modes for distributing coolant flow wherein at least one mode includes a failsafe position if said actuator is unresponsive to said control signal, said multi-port rotary valve includes a mechanism for returning said rotary disc to said failsafe position; and wherein said flow rate to a respective outlet port is regulated by at least one of said modes for distributing coolant flow, wherein said at least one of said modes includes an overlap condition of at least one of said apertures and said outlet ports, and wherein said flow rate of said respective outlet ports is proportional to an amount of overlap between said at least one of said apertures and said outlet ports. 22. The multi-port rotary valve of claim 21 wherein said failsafe position is a default position located at a rotational midpoint on said rotary disc, said rotary disc is rotatable clockwise and counterclockwise from said failsafe position.23. The multi-port rotary valve of claim 21 wherein said auxiliary port includes an oil cooling port and said auxiliary circuit includes an oil cooling circuit.24. The multi-port rotary valve of claim 21 wherein said auxiliary port includes an bypass port and said auxiliary circuit includes an bypass circuit, wherein said bypass circuit is directly connected to said engine cooling circuit.25. The multi-port rotary valve of claim 21 wherein said first and second aperture are radially offset on said rotary disc.