Back to results
US 7,448,369 B2Granted
Method for controlling a fuel injector
AssigneeHonda Motor Co., Ltd.
InventorsJames S. Robinson, Todd R. Luken, Jared C. Vanderhoof
Life of this patent
Estimating the term…
Abstract
A method of controlling a fuel injector is disclosed. Multiple airflow rate regimes are associated with different fuel injection control methods. In one example, a low airflow rate regime is associated with a speed density control method and a high airflow rate regime is associated with an airflow meter control method.
Claims21
A fuel injection system associated with an engine, comprising:
- a fuel injector;
- an electronic control unit in communication with an airflow meter and in communication with a pressure sensor associated with an intake manifold of the engine;
- the electronic control unit also receiving information related to an airflow rate of the engine;
- the electronic control unit using the pressure sensor associated with the intake manifold in a low airflow rate regime;
- wherein the electronic control unit uses the airflow meter in a high air flow regime;
- and
- wherein the electronic control unit determines whether to use the pressure sensor or the airflow meter by considering data consisting essentially of the airflow rate of the engine.
4 more elements
A method of controlling a fuel injection system, comprising the steps of:
- receiving information from a set of sensors;
- determining an airflow rate based on information consisting essentially of data received from an airflow meter;
- the method further comprising the steps of:
- sending a first control signal to the fuel injector when the airflow rate is within a first airflow rate regime and sending a second control signal to the fuel injector when the airflow rate is within a second airflow rate regime;
- and
- the first airflow rate regime being lower than the second airflow rate regime;
- and
- wherein the first control signal is associated with a speed density control method and the second control signal is associated with an airflow meter control method.
5 more elements
A method of selecting an injection control method, comprising the steps of:
- dividing a range of possible airflow rates into a first airflow rate regime, a second airflow rate regime and a third airflow rate regime, the second airflow rate regime being disposed between the first airflow rate regime and the third airflow rate regime;
- associating a first fuel injection control method with the first airflow rate regime and the third airflow rate regime;
- associating a second fuel injection control method with the second airflow rate regime;
- determining an airflow rate based on information received by a set of sensors;
- sending a first control signal associated with the first fuel injection control method to the fuel injector when the airflow rate is within the first airflow rate regime or the third airflow rate regime;
- and
- sending a second control signal associated with the second fuel injection control method to the fuel injection when the airflow rate is within the second airflow rate regime.
4 more elements
A fuel injection system associated with an engine, comprising:
- a fuel injector;
- an electronic control unit in communication with an airflow meter and in communication with a pressure sensor associated with an intake manifold of the engine;
- the electronic control unit also receiving information related to an airflow rate of the engine;
- the electronic control unit dividing a range of possible airflow rates into a first airflow rate regime, a second airflow rate regime and a third airflow rate regime, the second airflow rate regime being disposed between the first airflow rate regime and the third airflow rate regime;
- the electronic control unit using the pressure sensor associated with the intake manifold in the first airflow rate regime and the third airflow rate regime;
- and
- wherein the electronic control unit uses the airflow meter in a second air flow rate regime.
4 more elements
Dependencies are inferred from the claim text.