Method for controlling injection timing of an internal combustion engine
AssigneeFord Global Technologies, LLC
InventorsThomas G. Leone, Robert A. Stein, Jeffrey C. Lyjak
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Abstract
A method to control injection timing for an internal combustion engine having a plurality of injectors in at least a cylinder, the method comprising of injecting a first fuel amount to at least a cylinder of an internal combustion engine from a first injector, injecting a second fuel amount fuel to said cylinder from a second injector, and adjusting the timing between starting or ending injection of said first fuel amount, and starting or ending of said second fuel amount in response to an operating condition of said engine.
Claims31
A method to control injection timing for an internal combustion engine having a plurality of injectors for delivering fuel to at least a cylinder, the method comprising:
- injecting a first fuel amount to at least the cylinder of the internal combustion engine from a first injector;
- injecting a second fuel amount to said cylinder from a second injector;
- adjusting a timing between starting or ending injection of said first fuel amount, and starting or ending injection or said second fuel amount in response to at least an operating condition of said engine;
- wherein said injection of said first fuel amount and said injection of said second fuel amount at least partially overlap during at least some operating conditions.
A method to control injection timing for an internal combustion engine having a plurality of injectors for delivering fuel to at least a cylinder, the method comprising:
- injecting a first fuel type to at least said cylinder of the internal combustion engine from a first injector;
- injecting a second fuel type to said cylinder from a second injector;
- adjusting a timing between injecting said first fuel type and injecting said second fuel type in response to an operating condition of said engine;
- wherein said injecting the first fuel type or said injecting the second fuel type is performed at least partially during both the exhaust stroke and the intake stroke of the cylinder for at least a first range of the operating condition.
A method to control injection timing for an internal combustion engine having a plurality of injectors for delivering fuel to at least a cylinder, the method comprising:
- during a first injection mode, injecting fuel to at least said cylinder of the internal combustion engine by a first injector and a second injector, a timing of said injections separated by a first time interval;
- during a second injection mode, injecting fuel to said cylinder by said first injector and by said second injector, the timing of said injections overlapping by a second time interval;
- and
- operating between said first injection mode and said second injection mode in response to an operating condition of said engine.
A computer readable storage medium having stored data representing instructions executable by a computer to control fuel injection to a cylinder of an internal combustion engine of a vehicle, said storage medium comprising:
- instructions for injecting a first fuel amount to at least a cylinder of an internal combustion engine from a first injector;
- instructions for injecting a second fuel amount fuel to said cylinder from a second injector;
- and
- instructions for adjusting a timing between injecting said first fuel amount and injecting said second fuel amount in response to an operating condition of said engine so that the injection of the first fuel amount and the injection of the second fuel amount at least partially overlap during at least a first range of the operating condition and do not overlap during at least a second range of the operating condition.
Dependencies are inferred from the claim text.