Method for operating an internal combustion engine, especially of an automobile
AssigneeRobert Bosch GmbH
InventorsWinfried Moser, Matthias Philipp
Life of this patent
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Abstract
An internal combustion engine especially for a motor vehicle is described which is provided with an injection valve (11) with which fuel from a tank (3) can be injected directly into a combustion chamber either in a first mode of operation (S) during a compression phase or in a second mode of operation (H) during an induction phase. Furthermore, the internal combustion engine is provided with a control apparatus (10) for controlling (open loop and/or closed loop) the engine. A line (13) is provided via which vaporized fuel from the tank (3) can be conducted into the combustion chamber in the second mode of operation (H).
Claims13
A method for operating an internal combustion engine such as an engine of a motor vehicle, the engine operating in a first mode (S) of operation and in a second mode (H) of operation, the method comprising the steps of:
- injecting fuel from a fuel tank directly into a combustion chamber of said engine when in said first mode (S) of operation during a compression phase and, when in said second mode (H) of operation, during an induction phase;
- supplying vaporized fuel from the tank to the combustion chamber in the second mode (H) of operation;
- and,
- maintaining the second mode (H) of operation until the charge (B) of the active charcoal filter becomes less than a pregiven second value (B2).
An electric storage medium such as a read-only-memory for a control apparatus of an internal combustion engine such as an engine of a motor vehicle on which a program is stored which can be run on a computer apparatus such as a microprocessor, the engine operating in a first mode (S) of operation and in a second mode (H) of operation, the electric storage medium comprising said program adapted to carry out the method steps of:
- injecting fuel from a fuel tank directly into a combustion chamber of said engine when in said first mode (S) of operation during a compression phase and, when in said second mode (H) of operation during an induction phase;
- supplying vaporized fuel from the tank to the combustion chamber in the second mode (H) of operation;
- and,
- maintaining the second mode (H) of operation until the charge (B) of the active charcoal filter becomes less than a pregiven second value (B2).
An internal combustion engine such as for a motor vehicle, the engine operating in a first mode (S) of operation and in a second mode (H) of operation, the engine comprising:
- a tank;
- an injection valve for directly injecting fuel from said tank into a combustion chamber of said engine when in said first mode (S) of operation during a compression phase and, when in said second mode (H) of operation, during an induction phase;
- a control apparatus for controlling (open loop and/or closed loop) the engine;
- a line via which vaporized fuel from said tank can be conducted to the combustion chamber in the second mode (H) of operation;
- and,
- means for maintaining the second mode (H) of operation until the charge (B) of the active charcoal filter becomes less then a pregiven second value (B2).
Dependencies are inferred from the claim text.