Piston engine, method and use
AssigneeJ. Eberspaecher GmbH & Co. KG
InventorsJan Krüger, Rolf Jebasinski
Life of this patent
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Abstract
The present invention relates to a method for operating a piston engine, more preferably of a motor vehicle, with a fresh air system for feeding fresh air to cylinders of the piston engine and with an exhaust system for discharging exhaust gas from the cylinders, wherein during a gas exchange by a positive pressure wave on the fresh air side the charging of the respective cylinder with fresh air and/or by a negative pressure wave on the exhaust gas side the discharging of exhaust gas from the respective cylinder is supported. An increased variability is obtained if the respective pressure wave is generated by at least one electroacoustic converter.
Claims13
A method for operating a piston engine with a fresh air system for feeding fresh air to cylinders of the piston engine at a fresh air side thereof and with an exhaust system for discharging exhaust gas from the cylinders at an exhaust gas side thereof, comprising:
- wherein during a gas exchange at least one of the steps of charging of the respective cylinder with fresh air is supported by a positive pressure wave on the fresh air side and the discharging of exhaust gas from the respective cylinder is supported by a negative pressure wave on the exhaust gas side is conducted,
- wherein the respective positive or negative pressure wave is generated by means of at least one electroacoustic converter.
A piston engine, comprising:
- with a fresh air system for feeding fresh air to cylinders of the piston engine at a fresh air side thereof,
- with an exhaust system for discharging exhaust gas from the cylinders at an exhaust gas side thereof,
- with at least one electroacoustic converter which is connected to at least one of the fresh air system and to the exhaust system,
- with a control device for operating the electroacoustic converter in such a manner that pressure waves generated by the electroacoustic converter as one of:
- 1) positive pressure waves on the fresh air side support the charging of the cylinder with fresh air and 2) negative pressure waves on the exhaust gas side support the discharging of exhaust gas from the cylinders.
A method of operating an electroacoustic converter situated in a piston engine having an at least one cylinder and a fresh air system for supplying fresh air to the at least one cylinder, comprising:
- generating positive pressure waves in the fresh air system with the electroacoustic converter such that, during gas exchange, the positive pressure waves support a charging of the at least one cylinder of the piston engine with fresh air.
A method of operating an electroacoustic converter situated in a piston engine having a at least one cylinder and an exhaust system for removing exhaust gas from the at least one cylinder, comprising:
- generating negative pressure waves in the exhaust gas system with the electroacoustic converter such that, during gas exchange, the negative pressure waves support a discharging of the at least one cylinder of the piston engine of exhaust gas.
Dependencies are inferred from the claim text.