Method and device for controlling an internal combustion engine
AssigneeRobert Bosch GmbH
InventorsAlexander Eichhorn, David Lejsek
Life of this patent
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Abstract
A method for injecting gaseous fuel directly into a combustion chamber of an internal combustion engine in order to heat a catalytic converter, the method including: carrying out a main injection of gaseous fuel directly into the combustion chamber; carrying out a first post-injection following the main injection but prior to an ignition, and following the ignition and preferably following the end of combustion in the combustion chamber, carrying out a second post-injection of gaseous fuel into the combustion chamber.
Claims13
1-11. (canceled)
A method for injecting gaseous fuel directly into a combustion chamber of an internal combustion engine in order to heat a catalytic converter, the method comprising:
- carrying out a main injection of gaseous fuel directly into the combustion chamber;
- carrying out a first post injection following the main injection but prior to an ignition;
- and
- following the ignition and following the end of combustion in the combustion chamber, carrying out a second post-injection of gaseous fuel into the combustion chamber.
A method for injecting gaseous fuel directly into a combustion chamber of an internal combustion engine in order to heat a catalytic converter if the catalytic converter has a temperature below a threshold temperature, the method comprising:
- carrying out a main injection of gaseous fuel directly into the combustion chamber;
- and
- carrying out a post-injection of gaseous fuel directly into the combustion chamber following the end of a combustion in the combustion chamber to increase an exhaust-gas enthalpy.
A control unit for injecting gaseous fuel directly into a combustion chamber of an internal combustion engine in order to heat a catalytic converter, the control unit designed to:
- carry out a main injection of gaseous fuel directly into the combustion chamber;
- carry out a first post injection following the main injection but prior to an ignition;
- and
- following the ignition and following the end of combustion in the combustion chamber, carry out a second post-injection of gaseous fuel into the combustion chamber.
A control unit for injecting gaseous fuel directly into a combustion chamber of an internal combustion engine in order to heat a catalytic converter if the catalytic converter has a temperature below a threshold temperature, the control unit designed to:
- carry out a main injection of gaseous fuel directly into the combustion chamber;
- and
- carry out a post-injection of gaseous fuel directly into the combustion chamber following the end of a combustion in the combustion chamber to increase an exhaust-gas enthalpy.
Dependencies are inferred from the claim text.