Method, computer program and control and/or regulating device for operating an internal combustion engine
First Claim
1. A method for operating an internal combustion engine in dependence upon operating characteristic variables including at least one of:
- rpm (nmot) of a crankshaft;
temperature (Tmot) of the internal combustion engine; and
, temperature of the intake air (Taev);
the method comprising the steps of;
obtaining a temperature (Taevk) of the inducted air in a region near the combustion chamber or in the combustion chamber itself at least approximately from a detected or modeled temperature (Taev) of the inducted air in a region remote from the combustion chamber;
determining the temperature (Taevk) of the inducted air in the region near the combustion chamber or in the combustion chamber itself under the assumption that the inducted air has a modeled or detected initial temperature (Taevk);
bringing the intake air into thermal contact with a typical component during a contact time (tcontact) which is typical for a type of the internal combustion engine and for an operating state of the internal combustion engine with the typical component being a modeled or detected temperature (Tev); and
, utilizing at least an inlet valve, a cylinder head or a coolant as said typical component.
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Accused Products
Abstract
An internal combustion engine (10) is operated in dependence upon operating characteristic variables such as rpm (nmot) of a crankshaft (18), temperature (Tmot) of the internal combustion engine (10) and/or temperature of the intake air (Taev). In the method, a temperature (Taevk) of the inducted air in the combustion chamber (16) is, at least in approximation, obtained from a detected or modeled temperature (Taev) of the inducted air in a region remote from the combustion chamber. To simplify the programming, it is suggested that the determination of the temperature (Taevk) of the inducted air in the combustion chamber (16) takes place under the assumption that the inducted air has a modeled or detected initial temperature (Taev) and that the intake air comes into thermal contact with a typical component (22) during a contact time (tcontact) which is typical for a type of the internal combustion engine (10) and for an operating state of the internal combustion engine (10) and the typical component has a modeled or detected temperature (Tev).
25 Citations
12 Claims
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1. A method for operating an internal combustion engine in dependence upon operating characteristic variables including at least one of:
- rpm (nmot) of a crankshaft;
temperature (Tmot) of the internal combustion engine; and
, temperature of the intake air (Taev);
the method comprising the steps of;obtaining a temperature (Taevk) of the inducted air in a region near the combustion chamber or in the combustion chamber itself at least approximately from a detected or modeled temperature (Taev) of the inducted air in a region remote from the combustion chamber;
determining the temperature (Taevk) of the inducted air in the region near the combustion chamber or in the combustion chamber itself under the assumption that the inducted air has a modeled or detected initial temperature (Taevk);
bringing the intake air into thermal contact with a typical component during a contact time (tcontact) which is typical for a type of the internal combustion engine and for an operating state of the internal combustion engine with the typical component being a modeled or detected temperature (Tev); and
,utilizing at least an inlet valve, a cylinder head or a coolant as said typical component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- rpm (nmot) of a crankshaft;
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10. A computer program comprising a program for carrying out a method when executed on a computer, the method being for operating an internal combustion engine in dependence upon operating characteristic variables including at least one of:
- rpm (nmot) of a crankshaft;
temperature (Tmot) of the internal combustion engine; and
, temperature of the intake air (Taev); and
the method including the steps of;obtaining a temperature (Taevk) of the inducted air in a region near the combustion chamber or in the combustion chamber itself at least approximately from a detected or modeled temperature (Taev) of the inducted air in a region remote from the combustion chamber;
determining the temperature (Taevk) of the inducted air in the region near the combustion chamber or in the combustion chamber itself under the assumption that the inducted air has a modeled or detected initial temperature (Taevk);
bringing the intake air into thermal contact with a typical component during a contact time (tcontact) which is typical for a type of the internal combustion engine and for an operating state of the internal combustion engine with the typical component being a modeled or detected temperature (Tev); and
,utilizing at least an inlet valve, a cylinder head or a coolant as said typical component. - View Dependent Claims (11)
- rpm (nmot) of a crankshaft;
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12. A control apparatus (open loop and/or closed loop) for operating an internal combustion engine, the control apparatus comprising a memory on which a computer program is stored with said computer program being for carrying out a method for operating an internal combustion engine in dependence upon operating characteristic variables including at least one of:
- rpm (nmot) of a crankshaft;
temperature (Tmot) of the internal combustion engine; and
, temperature of the intake air (Taev); and
the method including the steps of;obtaining a temperature (Taevk) of the inducted air in a region near the combustion chamber or in the combustion chamber itself at least approximately from a detected or modeled temperature (Taev) of the inducted air in a region remote from the combustion chamber;
determining the temperature (Taevk) of the inducted air in the region near the combustion chamber or in the combustion chamber itself under the assumption that the inducted air has a modeled or detected initial temperature (Taevk);
bringing the intake air into thermal contact with a typical component during a contact time (tcontact) which is typical for a type of the internal combustion engine and for an operating state of the internal combustion engine with the typical component being a modeled or detected temperature (Tev); and
,utilizing at least an inlet valve, a cylinder head or a coolant as said typical component.
- rpm (nmot) of a crankshaft;
Specification