초록 ▼

An internal combustion engine is coupled to a supercharger operable to supply varying amounts of air to the engine responsive to the load on the engine. The supercharger has a pair of screw rotors driven by the engine to move air to the engine and a control apparatus for varying the mass and pressur

An internal combustion engine is coupled to a supercharger operable to supply varying amounts of air to the engine responsive to the load on the engine. The supercharger has a pair of screw rotors driven by the engine to move air to the engine and a control apparatus for varying the mass and pressure of air supplied to the engine.

대표청구항 ▼

1. In combination: an internal combustion engine having an air intake manifold and at least one combustion chamber for receiving air from the air intake manifold, an apparatus operated by the internal combustion engine for imparting a load on the internal combustion engine, a first power transfer de

1. In combination: an internal combustion engine having an air intake manifold and at least one combustion chamber for receiving air from the air intake manifold, an apparatus operated by the internal combustion engine for imparting a load on the internal combustion engine, a first power transfer device drivably connecting the internal combustion engine to the apparatus whereby the internal combustion engine operates the apparatus and the apparatus imparts the load on the internal combustion engine, a supercharger having cooperating rotors for supplying air to the air intake manifold of the internal combustion engine, a second power transfer device drivably connecting the rotors to the internal combustion engine whereby the internal combustion engine operates the supercharger, a sensor for sensing the load on the engine and providing a signal representing the sensed load on the engine, a controller for accommodating the signal from the sensor and providing output command signals, said supercharger including a control apparatus for varying the volume and pressure of the air supplied to the intake manifold of the internal combustion engine, said control apparatus having at least one movable member movable relative to at least one of the rotors to vary the displacement of the volume of air moved by the rotors and selectively increase or decrease the volume of the air supplied to the air intake manifold of the internal combustion engine responsive to the command signals from the controller of the load on the internal combustion engine to boost the rate of the flow of air delivered to the air intake manifold of the internal combustion chamber above the naturally aspirated rate of the flow of air to the air intake manifold of the internal combustion engine, an actuator operable to move the one member relative to said at least one of the rotors, and a fuel metering apparatus for introducing combustible fuel into the combustion chamber of the internal combustion engine responsive to the command signals from the controller corresponding to the boost of the rate of the flow of air delivered to the air intake manifold of the internal combustion engine. 2. The combination of claim 1 wherein: the supercharger includes a housing having end walls, generally parallel inside cylindrical chambers, an air inlet opening and an air exit opening, said rotors comprising a pair of rotors located in said chambers, supports rotatably mounting the rotors on said end walls, said second power transfer device comprising a drive apparatus connected to the engine for rotating the rotors to move air through the chambers and discharge air through the air exit opening into the air intake manifold, said movable member of the control apparatus for varying the volume and pressure of air supplied to the air intake manifold of the engine being movably mounted on the housing for movement relative to the pair of rotors for varying the volume of air moved by the pair of rotors through the chambers and discharged air to the air intake manifold of the engine. 3. The combination of claim 2 wherein: the pair of rotors include a first rotor having helical grooves along the length thereof and a second rotor having helical lands along the length thereof, said grooves and lands cooperating with each other during rotation of the rotors to move air through the chambers and discharge air to the air intake manifold of the engine. 4. In combination: a diesel engine having an air intake manifold and at least one combustion chamber for receiving air from the air intake manifold, an apparatus operated by the diesel engine, a first power transfer device drivably connecting the diesel engine to the apparatus whereby the diesel engine operates the apparatus and the apparatus imparts a load on the diesel engine, a supercharger for supplying air to the air intake manifold of the diesel engine, said supercharger having a housing including an air inlet opening, an air outlet opening and a chamber located between the air inlet and air outlet openings, cooperating rotors located in the chamber of the housing operable to move air through the air inlet opening, the chamber and air outlet opening and discharge air to the intake manifold of the diesel engine, a second power transfer device drivably connecting the rotors to the diesel engine whereby the diesel engine operates the supercharger, a sensor for sensing the load on the diesel engine and providing a signal representing the sensed load on the diesel engine, a controller for accommodating the signal from the sensor and providing output command signals, said supercharger having a control apparatus for varying the volume and pressure of air displaced by the rotors in the chamber of the housing and supplied to the air intake manifold of the diesel engine responsive to the command signals from the controller representing the sensed load on the diesel engine to boost the rate of the flow of air delivered to the air intake manifold of the diesel engine above the naturally aspirated rate of the flow of air to the air intake manifold of the diesel engine, said control apparatus having at least one member located in the chamber of the housing adjacent at least one rotor movable to selected positions relative to the at least one rotor to selectively increase or decrease the displacement of the volume flow of air moved by the rotors and the volume of air supplied to the air intake of the diesel engine and an actuator operable to move said at least one member to the selected positions relative to the at least one rotor, and a fuel metering apparatus responsive to the command signals from the controller representing the load on the diesel engine for introducing combustible fuel into the combustion chamber of the diesel engine corresponding to the boost of the rate of the flow of air delivered to the air intake manifold of the diesel engine. 5. The combination of claim 4 wherein: the housing has end walls, generally parallel inside chambers, said rotors comprising a pair of rotors located in said chambers, means rotatably mounting the rotors on said end walls, said at least one member of the control apparatus for varying the displacement of the volume flow of air moved by the rotors and the volume and pressure of air supplied to the air intake manifold of the diesel engine being movably mounted on the housing for movement relative to the rotors for varying the volume of air moved by the rotors through the chambers and discharged air to the air intake manifold of the diesel engine. 6. The combination of claim 5 wherein: the pair of rotors include a first rotor having helical grooves along the length thereof and a second rotor having helical lands along the length thereof, said grooves and lands cooperating with each other during rotation of the rotors to move air through the chambers and discharge air to the air intake manifold of the diesel engine. 7. In combination: an internal combustion engine having an air intake manifold and at least one combustion chamber for receiving air from the air intake manifold, an electric generator for supplying electric power to an electric load, a first power transfer device drivably connecting the engine to the electric generator whereby the engine operates the generator and the generator imparts a load on the engine, a supercharger having cooperating rotors operable to supply air to the air intake manifold of the engine, a second power transfer device drivably connecting the rotors of the supercharger to the internal combustion engine, a sensor for sensing the load on the engine and providing a signal representing the sensed load on the engine, a controller for accommodating the signal from the sensor and providing output command signals, said supercharger having a control apparatus for varying the volume and pressure of the air supplied to the intake manifold of the engine, said control apparatus having at least one movable member movable relative to at least one of the rotors to vary the displacement of the volume flow of air moved by the rotors and selectively increase or decrease the volume of air supplied to the air intake manifold of the engine responsive to the command signals from the controller of the electric load on the generator to boost the rate of the flow of air delivered to the air intake manifold of the engine above the naturally aspirated rate of the flow of air to the air intake manifold of the engine, an actuator operable to move the one member relative to said at least one of the rotors, and a fuel metering apparatus for introducing combustible fuel into the combustion chamber of the engine responsive to the command signals from the controller corresponding to the boost of the rate of the flow of air delivered to the air intake manifold of the engine. 8. The combination of claim 7 wherein: the supercharger includes a housing having end walls, generally parallel inside cylindrical chambers, an air inlet opening and an air exit opening, said rotors comprising a pair of rotors located in said chambers, supports rotatably mounting the rotors on said end walls, said second power transfer device comprising a drive apparatus connected to the engine for rotating the pair of rotors to move air through the chambers and discharge air through the air exit opening into the air intake manifold, said movable member of the control apparatus for varying the volume and pressure of air supplied to the air intake manifold of the engine being movably mounted on the housing for movement relative to the pair of rotors for varying the volume of air moved by the rotors through the chambers and discharged air to the air intake manifold of the engine. 9. The combination of claim 8 wherein: the pair of rotors include a first rotor having helical grooves along the length thereof and a second rotor having helical lands along the length thereof, said grooves and lands cooperating with each other during rotation of the rotors to move air through the chambers and discharge air to the air intake manifold of the engine. 10. In combination: a four cycle diesel engine having an air intake manifold and at least one combustion chamber for receiving air from the air intake manifold, an electric generator for supplying electric power to an electric load, a first power transfer device drivably connecting the diesel engine to the electric generator whereby the diesel engine operates the electric generator and the electric generator imparts a load on the diesel engine, a supercharger for supplying air to the air intake manifold of the diesel engine, said supercharger having a housing including an air inlet opening, an air outlet opening and a chamber located between the air inlet and air outlet openings, cooperating rotors located in the chamber of the housing operable to move air through the inlet opening, the chamber and outlet opening and discharge air to the intake manifold of the diesel engine, a second power transfer device drivably connecting the rotors to the diesel engine whereby the diesel engine operates the supercharger, a sensor for sensing the load on the diesel engine and providing a signal representing the sensed load on the diesel engine, a controller for accommodating the signal from the sensor and providing command signals, said supercharger having a control apparatus for varying the volume and pressure of air displaced by the rotors in the chamber of the housing and supplied to the air intake manifold of the diesel engine responsive to the command signals from the controller representing the sensed load on the diesel engine to boost the rate of the flow of air delivered to the air intake manifold of the diesel engine above the naturally aspirated rate of the flow of air to the air intake manifold of the diesel engine, said control apparatus having at least one member located in the chamber of the housing adjacent at least one rotor movable to selected positions relative to the at least one rotor to selectively increase or decrease the displacement of the volume flow of air moved by the rotors and the volume of air supplied to the air intake manifold above the naturally aspirated rate of the flow of air to the air intake manifold of the diesel engine and an actuator operable to move said at least one member to the selected positions relative to the at least one rotor, and a fuel metering apparatus responsive to the command signals from the controller representing the sensed load on the diesel engine for introducing combustible fuel into the combustion chamber of the diesel engine corresponding to the boost of the rate of the flow of air delivered to the air intake manifold of the diesel engine. 11. The combination of claim 10 wherein: the housing has end walls, generally parallel inside chambers, said rotors comprising a pair of rotors located in said chambers, means rotatably mounting the rotors on said end walls, said at least one member of the control apparatus for varying the displacement of the volume flow of air moved by the rotors and the volume and pressure of air supplied to the air intake manifold of the diesel engine being movably mounted on the housing for movement relative to the rotors for varying the volume of air moved by the rotors through the chambers and discharged air to the air intake manifold of the diesel engine. 12. The combination of claim 11 wherein: the pair of rotors include a first rotor having helical grooves along the length thereof and a second rotor having helical lands along the length thereof, said grooves and lands cooperating with each other during rotation of the rotors to move air through the chambers and discharge air to the air intake manifold of the diesel engine.