Ignition system and method for operating an ignition system
AssigneeRobert Bosch GmbH
InventorsTim Skowronek, Thomas Pawlak, Wolfgang Sinz
Life of this patent
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Abstract
An ignition system and a method for operating an ignition system for an internal combustion engine are provided, including a primary voltage generator and a boost converter for generating an ignition spark. An ascertainment of a voltage requirement for the ignition spark is followed by a modification of a switch-on time of the boost converter relative to a switch-off time of the primary voltage generator.
Claims16
A method for adjusting a high voltage supply for an ignition spark in an ignition system to be generated with a primary voltage generator, the ignition system including the primary voltage generator and a boost converter, for an internal combustion engine, the method comprising:
- ascertaining a voltage requirement for an ignition sparkover to be generated;
- and
- modifying, in response to the voltage requirement, a switch-on time of the boost converter relative to a switch-off time of the primary voltage generator;
- wherein at least one of:
- (i) the modifying includes, in response to a reduced voltage requirement, modifying the switch-on time of the boost converter such that the boost converter is switched on at a later point in time relative to the switch-off time of the primary voltage generator, the switch-on time of the boost converter being prior to the switch-off time of the primary voltage generator, and (ii) the modifying includes, in response to an increased voltage requirement, modifying the switch-on time of the boost converter such that the boost converter is switched on at an earlier point in time relative to the switch-off time of the primary voltage regulator, the switch-on time of the boost converter being prior to the switch-off time of the primary voltage generator.
A computer readable medium having a computer program, which is executable by a processor, comprising:
- a program code arrangement having program code for adjusting a high voltage supply for an ignition spark in an ignition system to be generated with a primary voltage generator, the ignition system including the primary voltage generator and a boost converter, for an internal combustion engine, by performing the following:
- ascertaining a voltage requirement for an ignition sparkover to be generated;
- and
- modifying, in response to the voltage requirement, a switch-on time of the boost converter relative to a switch-off time of the primary voltage generator;
- wherein at least one of:
- (i) the modifying includes, in response to a reduced voltage requirement, modifying the switch-on time of the boost converter such that the boost converter is switched on at a later point in time relative to the switch-off time of the primary voltage generator, the boost converter being switched on before the primary voltage generator is switched off, and (ii) the modifying includes, in response to an increased voltage requirement, modifying the switch-on time of the boost converter such that the boost converter is switched on at an earlier point in time relative to the switch-off time of the primary voltage regulator, the boost converter being switched on before the primary voltage generator is switched off.
An ignition system, comprising:
- a control arrangement configured for adjusting a high voltage supply for an ignition spark in an ignition system to be generated with a primary voltage generator, the ignition system including the primary voltage generator and a boost converter, for an internal combustion engine, by performing the following:
- ascertaining a voltage requirement for an ignition sparkover to be generated;
- and
- modifying, in response to the voltage requirement, a switch-on time of the boost converter relative to a switch-off time of the primary voltage generator;
- wherein at least one of:
- (i) the modifying includes, in response to a reduced voltage requirement, modifying the switch-on time of the boost converter such that the boost converter is switched on at a later point in time relative to the switch-off time of the primary voltage generator, the boost converter being switched on before the primary voltage generator is switched off, and (ii) the modifying includes, in response to an increased voltage requirement, modifying the switch-on time of the boost converter such that the boost converter is switched on at an earlier point in time relative to the switch-off time of the primary voltage regulator, the boost converter being switched on before the primary voltage generator is switched off.
Dependencies are inferred from the claim text.