Control apparatus for operating a fuel injector
AssigneeGM Global Technology Operations LLC
InventorsIvan Pelizzoni, Luca Lauritano
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Abstract
A control apparatus is disclosed for operating a fuel injector of an internal combustion engine. The control apparatus includes an Electronic Control Unit configured to: perform a first calculation task in order to calculate a set of Start Of Injection values (SOIi) of a train of injections, calculate an angular position (DIAngPos) of the crankshaft defining the start of a second calculation task, and perform the second calculation task in order to calculate a set of values (ETi) of the energizing time of the injections of the train. The angular position (DIAngPos) is calculated as a function of the Start Of Injection value (FirstSOI) of the first injection of the train as calculated by the first calculation task.
Claims13
1-11. (canceled)
A control apparatus for operating a fuel injector of an internal combustion engine having a cylinder housing a piston connected to a crankshaft and a fuel rail in fluid communication with the fuel injector to inject fuel into the cylinder , wherein the control apparatus comprises an Electronic Control Unit configured to:
- perform a first calculation task in order to calculate a set of Start Of Injection values of a train of injections;
- calculate an angular position of the crankshaft defining the start of a second calculation task;
- and
- perform the second calculation task in order to calculate a set of values of the energizing time of the injections of the train;
- wherein the angular position is calculated as a function of the Start Of Injection value of the first injection of the train as calculated by the first calculation task.
A method of operating a fuel injector of an internal combustion engine including a cylinder housing a piston connected to a crankshaft and a fuel rail in fluid communication with the fuel injector to inject fuel into the cylinder, the internal combustion engine being managed by an Electronic Control Unit, wherein the method comprises:
- performing a first calculation task in order to calculate a set of Start Of Injection values of a train of injections;
- calculating an angular position of the crankshaft defining the start of a second calculation task;
- and
- performing the second calculation task in order to calculate a set of values of the energizing time of the injections of the train;
- wherein the angular position is calculated as a function of the Start Of Injection value (FirstSOI) of the first injection of the train as calculated by the first calculation task.
An automotive system comprising an internal combustion engine managed by an Electronic Control Unit, the engine having a fuel injector in fluid communication with a fuel rail to inject fuel into a cylinder housing a piston connected to a crankshaft , the Electronic Control Unit being configured to:
- perform a first calculation task in order to calculate a set of Start Of Injection values of a train of injections;
- calculate an angular position of the crankshaft defining the start of a second calculation task;
- and
- perform the second calculation task in order to calculate a set of values of the energizing time of the injections of the train;
- wherein the angular position is calculated as a function of the Start Of Injection value of the first injection of the train as calculated by the first calculation task.
Dependencies are inferred from the claim text.