Method for changing the operating mode of an internal combustion engine
First Claim
1. An internal combustion engine which can be switched at least between an operating mode with spark ignition of the engine and an operating mode with controlled auto-ignition of the engine, the internal combustion engine being operable:
- to provide a first map in which at least one range is specified in which auto-ignition of the engine can take place,to determine whether, after an engine start, the engine reaches an operating point lying in the range of the first map, in which a controlled auto-ignition can take place, andto switch the engine to the operating mode, in which the auto-ignition can take place when the operating point lies in this range of the first map.
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Accused Products
Abstract
In a method for changing the operating mode in an internal combustion engine it is possible to switch between an operating mode with spark ignition of the engine and an operating mode with auto-ignition of the engine. Hereby, a first map is provided in which at least one range is specified in which a suitable auto-ignition of the engine can take place. After the engine start, therefore, it is determined whether the engine has reached an operating point lying within this range of the first map in order then to switch the engine to the operating mode in which auto-ignition can take place reliably.
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Citations
20 Claims
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1. An internal combustion engine which can be switched at least between an operating mode with spark ignition of the engine and an operating mode with controlled auto-ignition of the engine, the internal combustion engine being operable:
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to provide a first map in which at least one range is specified in which auto-ignition of the engine can take place, to determine whether, after an engine start, the engine reaches an operating point lying in the range of the first map, in which a controlled auto-ignition can take place, and to switch the engine to the operating mode, in which the auto-ignition can take place when the operating point lies in this range of the first map.
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2. A method for changing the operating mode of an internal combustion engine from an operating mode in which a spark ignition of the engine takes place into an operating mode in which auto-ignition of the engine takes place, the method comprising the steps of:
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a) providing a first map in which at least one range is specified in which auto-ignition of the engine can take place, b) determining whether, after an engine start, the engine reaches an operating point lying in the range of the first map, in which a controlled auto-ignition can take place, and c) switching the engine to the operating mode, in which the auto-ignition can take place when the operating point lies in this range of the first map. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification