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US 6,688,104 B2Granted
Method and device for operating an electrical supercharger
AssigneeRobert Bosch GmbH
InventorsMichael Baeuerle, Klaus Ries-Mueller
Life of this patent
Estimating the term…
Abstract
In a method and a device for operating an electrical supercharger, the electrical supercharger is actuated for cooling and/or diagnostic purposes in the non-combustion operation of the internal combustion engine.
Claims21
A method of operating an electrical supercharger, comprising:
- actuating the electrical supercharger by an electronic control unit using an activation signal;
- and
- generating by the electrical supercharger at least one of an air flow and an overpressure in at least one of an intake system and an exhaust system of the internal combustion engine;
- wherein the electrical supercharger is actuated in a non-combustion operation of the internal combustion engine, and the electrical supercharger is actuated during a coastdown operation of a vehicle.
1 more element
A method of operating an electrical supercharger, comprising:
- actuating the electrical supercharger by an electronic control unit using an activation signal;
- and
- generating by the electrical supercharger at least one of an air flow and an overpressure in at least one of an intake system of an internal combustion engine and an exhaust system of the internal combustion engine;
- wherein the electrical supercharger is actuated in a non-combustion operation of the internal combustion engine, and the electrical supercharger is actuated after the internal combustion engine has been switched off.
1 more element
A method of operating an electrical supercharger, comprising:
- actuating the electrical supercharger by an electronic control unit using an activation signal;
- and
- generating by the electrical supercharger at least one of an air flow and an overpressure in at least one of an intake system of an internal combustion engine and an exhaust system of the internal combustion engine;
- wherein the electrical supercharger is actuated in a non-combustion operation of the internal combustion engine, and the electrical supercharger is actuated for one of a predetermined duration, until a predetermined overpressure is achieved, and until a predetermined air flow is achieved.
1 more element
A method of operating an electrical supercharger, comprising:
- actuating the electrical supercharger by an electronic control unit using an activation signal;
- generating by the electrical supercharger at least one of an air flow and an overpressure in at least one of an intake system of an internal combustion engine and an exhaust system of the internal combustion engine;
- and
- moving the internal combustion engine via an electrical machine connected to a crankshaft into a preselected position having a predetermined valve overlap after the internal combustion engine has been shut down;
- wherein the electrical supercharger is actuated in a non-combustion operation of the internal combustion engine.
2 more elements
A method of operating an electrical supercharger, comprising:
- actuating the electrical supercharger by an electronic control unit using an activation signal;
- generating by the electrical supercharger at least one of an air flow and an overpressure in at least one of an intake system of an internal combustion engine and an exhaust system of the internal combustion engine;
- opening at least one valve of a fuel tank venting system during actuation of the electrical supercharger;
- closing the at least one valve of the fuel tank venting system during actuation of the electrical supercharger;
- and
- determining a tightness of the fuel tank venting system in accordance with a pressure drop in a region of at least one of the fuel tank system of the internal combustion engine and the intake system of the internal combustion engine;
- wherein the electrical supercharger is actuated in a non-combustion operation of the internal combustion engine.
4 more elements
A method of operating an electrical supercharger, comprising:
- actuating the electrical supercharger by an electronic control unit using an activation signal;
- generating by the electrical supercharger at least one of an air flow and an overpressure in at least one of an intake system of an internal combustion engine and an exhaust system of the internal combustion engine;
- and
- determining a reliable performance and a tightness of at least one valve connected to one of the intake system and the exhaust system in accordance with opening the at least one valve, closing the at least one valve, and monitoring at least one pressure in the intake system;
- wherein the electrical supercharger is actuated in a non-combustion operation of the internal combustion engine.
2 more elements
A device for operating an electrical supercharger, comprising:
- an electronic control arrangement to actuate the electrical supercharger using an activation signal, to control the electrical supercharger to generate at least one of an air flow and an overpressure in at least one of an intake system of an internal combustion engine and an exhaust system of the internal combustion engine, and to actuate the electrical supercharger in a non-combustion operation of the internal combustion engine after the internal combustion engine has been switched off.
Dependencies are inferred from the claim text.