METHOD FOR DIAGNOSING A FUNCTION OF AN INTERNAL COMBUSTION ENGINE
First Claim
1. A method for diagnosing a function of an internal combustion engine, which includes one injector of an intake-manifold injection, one injector of a direct injection and one cylinder, fuel being able to be applied to the cylinder one of:
- i) with the aid of the injector of the intake-manifold injection, and ii) with the aid of the injector of the direct injection, the method comprising;
determining an operating state of the internal combustion engine, which is characterized by at least one injection used for injecting fuel into the cylinder;
selecting a diagnostic function for the cylinder depending on the determined operating state; and
carrying out the selected diagnostic function for the cylinder.
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Accused Products
Abstract
A method for diagnosing a function of an internal combustion engine, which includes one injector of an intake-manifold injection, one injector of a direct injection and one cylinder. Fuel may be applied to the cylinder with the aid of the injector of the intake-manifold injection and/or with the aid of the injector of the direct injection. The method includes the steps of determining an operating state of the internal combustion engine, which is characterized by an injection and/or injections used for injecting fuel into the cylinder, selecting a diagnostic function for the cylinder as a function of the determined operating state and carrying out the selected diagnostic function for the cylinder.
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Citations
8 Claims
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1. A method for diagnosing a function of an internal combustion engine, which includes one injector of an intake-manifold injection, one injector of a direct injection and one cylinder, fuel being able to be applied to the cylinder one of:
- i) with the aid of the injector of the intake-manifold injection, and ii) with the aid of the injector of the direct injection, the method comprising;
determining an operating state of the internal combustion engine, which is characterized by at least one injection used for injecting fuel into the cylinder; selecting a diagnostic function for the cylinder depending on the determined operating state; and carrying out the selected diagnostic function for the cylinder. - View Dependent Claims (2, 3, 4, 5, 6)
- i) with the aid of the injector of the intake-manifold injection, and ii) with the aid of the injector of the direct injection, the method comprising;
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7. An electronic control unit for controlling a diagnosis of a function of an internal combustion engine, which includes one injector of an intake-manifold injection, one injector of a direct injection and one cylinder, fuel being able to be applied to the cylinder at least one of:
- i) with the aid of the injector of the intake-manifold injection, and ii) with the aid of the injector of the direct injection, the control unit being configured to;
determine an operating state of the internal combustion engine, which is characterized by at least one injection used for injecting fuel into the cylinder; select a diagnostic function for the cylinder depending on the determined operating state; and carry out the selected diagnostic function for the cylinder.
- i) with the aid of the injector of the intake-manifold injection, and ii) with the aid of the injector of the direct injection, the control unit being configured to;
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8. A non-transitory machine-readable storage medium on which is stored a computer program for diagnosing a function of an internal combustion engine, which includes one injector of an intake-manifold injection, one injector of a direct injection and one cylinder, fuel being able to be applied to the cylinder one of:
- i) with the aid of the injector of the intake-manifold injection, and ii) with the aid of the injector of the direct injection, the computer program, when executed by a processor, causing the processor to perform;
determining an operating state of the internal combustion engine, which is characterized by at least one injection used for injecting fuel into the cylinder; selecting a diagnostic function for the cylinder depending on the determined operating state; and carrying out the selected diagnostic function for the cylinder.
- i) with the aid of the injector of the intake-manifold injection, and ii) with the aid of the injector of the direct injection, the computer program, when executed by a processor, causing the processor to perform;
Specification