Method for operating an internal combustion engine
First Claim
1. A method for operating an internal combustion engine, comprising:
- providing a first data quantity which is based on a signal of a first sensor, wherein the first sensor detects a pressure in a first combustion chamber of a plurality of combustion chambers; and
providing a second data quantity which is based on a signal of at least one second sensor, wherein the second data quantity is a function of a pressure variation in at least one of the plurality of combustion chambers;
wherein both the first data quantity and the second quantity are one of;
a) a function of a pressure variation in the same combustion chamber, and b) related to the same combustion chamber, and wherein a drift of the at least one second sensor is ascertained from a change over time of the second data quantity with respect to the first data quantity.
1 Assignment
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Accused Products
Abstract
In a method for operating an internal combustion engine, a first data quantity is derived based on a signal of a first sensor which detects the pressure in a first combustion chamber of a plurality of combustion chambers, and a second data quantity is derived based on a signal of a second sensor, which second data quantity is a function of the pressure variation in at least one of the plurality of combustion chambers. The first data quantity and the second data quantity are functions of the pressure variation in the same combustion chamber, and a drift of the second sensor is ascertained from a change over time in the second data quantity with respect to the first data quantity.
10 Citations
14 Claims
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1. A method for operating an internal combustion engine, comprising:
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providing a first data quantity which is based on a signal of a first sensor, wherein the first sensor detects a pressure in a first combustion chamber of a plurality of combustion chambers; and
providing a second data quantity which is based on a signal of at least one second sensor, wherein the second data quantity is a function of a pressure variation in at least one of the plurality of combustion chambers;
wherein both the first data quantity and the second quantity are one of;
a) a function of a pressure variation in the same combustion chamber, and b) related to the same combustion chamber, and wherein a drift of the at least one second sensor is ascertained from a change over time of the second data quantity with respect to the first data quantity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A computer-readable storage medium for storing a computer program that controls, when executed by a computer, an operating method of an internal combustion engine, the method comprising:
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providing a first data quantity which is based on a signal of a first sensor, wherein the first sensor detects a pressure in a first combustion chamber of a plurality of combustion chambers; and
providing a second data quantity which is based on a signal of at least one second sensor, wherein the second data quantity is a function of a pressure variation in at least one of the plurality of combustion chambers;
wherein both the first data quantity and the second quantity are one of;
a) a function of a pressure variation in the same combustion chamber, and b) related to the same combustion chamber, and wherein a drift of the at least one second sensor is ascertained from a change over time of the second data quantity with respect to the first data quantity.
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14. A control device for controlling an operation of an internal combustion engine, comprising:
a calculation unit for deriving;
a first data quantity which is based on a signal of a first sensor, wherein the first sensor detects a pressure in a first combustion chamber of a plurality of combustion chambers; and
a second data quantity which is based on a signal of at least one second sensor, wherein the second data quantity is a function of a pressure variation in at least one of the plurality of combustion chambers;
wherein both the first data quantity and the second quantity are one of;
a) a function of a pressure variation in the same combustion chamber, and b) related to the same combustion chamber, and wherein a drift of the at least one second sensor is ascertained from a change over time of the second data quantity with respect to the first data quantity.
Specification