| 主权项 |
1. A supercharged internal combustion engine comprising:
an internal combustion engine having a combustion chamber for accommodating a mass of air and fuel, a supercharger operable to supply the mass of air to the combustion chamber of the engine according to the mass of air requirements of the engine for a given power output of the engine, said supercharger including a housing having opposite first and second ends, a bore providing a first chamber and a second chamber, an air mass exit opening and an air mass bypass passage, said second chamber and air mass bypass passage having a common air mass bypass opening for allowing air to flow from the second chamber into the air mass bypass passage, a member connected to the housing and the engine, said member having a passage open to the air mass exit opening to allow an air mass to flow from the supercharger to the internal combustion engine, a first end member connected to the first end of the housing, said first end member having an air mass inlet open to said first and second chambers, a second end member connected to the second end of the housing, a first rotor located in the first chamber rotatably mounted on the first and second end members, a second rotor located in the second chamber rotatably mounted on the first and second end members, said first and second rotors having cooperating helical vanes and grooves whereby rotation of the rotors moves a mass of air through the first and second chambers along the lengths of the first and second rotors from the air mass inlet to the air mass exit opening and air mass bypass opening, a wall joined to the housing located adjacent the first end member and an air mass inet section of the second chamber, said wall extended from the first end member to the air mass bypass opening for preventing a mass of air in the air mass inlet section of the second chamber from flowing outwardly into the air mass bypass passage, an air inlet casing connected to the first end member, said air inlet casing having an atmospheric air mass inlet and an air mass passage open to the first and second chambers to allow an atmospheric mass of air to flow through the casing into the first and second chambers, an annular body connected to the casing located within the casing, said body being positioned inward of the casing providing an annular space between the casing and body, said air mass bypass passage of the housing being open to said annular space whereby bypass air mass flows from the air mass bypass passage into the space between the casing and body, said body having an annular air exit opening between the casing and body whereby the bypass mass of air flows from the annular space between the casing and body and interfuses with the atmospheric mass of air flowing through the casing into the first and second chambers, a shuttle located in the air mass bypass passage, rails located in the air mass bypass passage, said rails being joined to the housing and extended partly along the length of the air mass bypass passage, said shuttle having a movable body to selectively close and open the air mass bypass opening to control the air mass directed to the internal combustion engine and the air mass flowing from the second chamber into the air mass bypass passage, a plurality of rollers rotatably mounted on the body engageable with the rails to movably support the shuttle on the rails for movement along the rails, a drive mechanism operatively connected to the body of the shuttle for moving the shuttle along the rails between open and closed positions relative to the air mass bypass opening thereby controlling the air mass supplied to the internal combustion engine and the air mass flowing through the air mass bypass opening, an actuator operable to control the drive mechanism to regulate the position of the shuttle relative to the air mass bypass opening to control the air mass directed to the engine according to the power requirements of the engine, a power transmission device drivably connecting the internal combustion engine to the rotors of the supercharger whereby the internal combustion engine operates the supercharger, an apparatus for introducing fuel into the air in the combustion chamber of the supercharger corresponding to the ratio of flow of air mass directed to the combustion chamber of the internal combustion engine by the supercharger, and a controller for providing command signals for operating the actuator for moving the shuttle between the open and closed positions relative to the air mass bypass opening and to control the apparatus to regulate the amount of and timing of the fuel introduced into the combustion chamber of the internal combustion engine. |
