Method for diagnosing an internal combustion engine in a motor vehicle
First Claim
1. A method for diagnosing an internal combustion engine in a motor vehicle having at least one sensor unit which includes at least one sound receiver, the at least one sound receiver including an ultrasound receiver configured to detect ultrasound, the method comprising:
- recording sound waves of the internal combustion engine using the ultrasound receiver;
converting the sound waves into an electrical signal using the ultrasound receiver; and
using the electrical signal for a diagnosis of an operating state of the internal combustion engine;
wherein the ultrasound receiver is also used one of;
as a parking aid;
as a parking space measuring device; and
for measuring a distance of the vehicle from an obstacle.
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Accused Products
Abstract
A method for diagnosing an internal combustion engine in a motor vehicle having at least one sensor unit, including at least one sound receiver, the sound receiver converting sound waves into an electrical signal. Sound waves of the internal combustion engine are recorded using the sound receiver of the sensor unit and converted into an electrical signal, and the electrical signal is used for the diagnosis of the operating state of the internal combustion engine.
28 Citations
23 Claims
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1. A method for diagnosing an internal combustion engine in a motor vehicle having at least one sensor unit which includes at least one sound receiver, the at least one sound receiver including an ultrasound receiver configured to detect ultrasound, the method comprising:
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recording sound waves of the internal combustion engine using the ultrasound receiver; converting the sound waves into an electrical signal using the ultrasound receiver; and using the electrical signal for a diagnosis of an operating state of the internal combustion engine; wherein the ultrasound receiver is also used one of; as a parking aid; as a parking space measuring device; and for measuring a distance of the vehicle from an obstacle. - View Dependent Claims (2, 3)
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4. A control unit for diagnosing an internal combustion engine in a motor vehicle having at least one sensor unit which includes at least one sound receiver, the control unit comprising:
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means for recording sound waves of the internal combustion engine using the sound receiver; means for converting the sound waves into an electrical signal using the sound receiver; means for using the electrical signal for a diagnosis of an operating state of the internal combustion engine; and means for reducing a sensitivity of the at least one sensor unit with respect to the diagnosis when the motor vehicle reaches a velocity of approximately 50 km/h, the at least one sensor unit thereafter generating signals in response to noise, a number of the signals generated after the sensitivity reduction being reduced compared to a number of signals the at least one sensor is configured to produce in response to the noise prior to the sensitivity reduction.
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5. A non-transitory computer-readable medium having stored thereon a program which, when executed by a processor, performs the following method for diagnosing an internal combustion engine in a motor vehicle having at least one sensor unit which includes at least one sound receiver:
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recording sound waves of the internal combustion engine using the sound receiver; converting the sound waves into an electrical signal using the sound receiver; using the electrical signal for a diagnosis of an operating state of the internal combustion engine; and reducing a sensitivity of the at least one sensor unit with respect to the diagnosis when the motor vehicle reaches a velocity of approximately 50 km/h, the at least one sensor unit thereafter generating signals in response to noise, a number of the signals generated after the sensitivity reduction being reduced compared to a number of signals the at least one sensor is configured to produce in response to the noise prior to the sensitivity reduction.
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6. A method for diagnosing an internal combustion engine in a motor vehicle having at least one sensor unit which includes at least one sound receiver, the method comprising:
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recording sound waves of the internal combustion engine using the sound receiver; converting the sound waves into an electrical signal using the sound receiver; using the electrical signal for a diagnosis of an operating state of the internal combustion engine; and reducing a sensitivity of the at least one sensor unit with respect to the diagnosis when the motor vehicle reaches a velocity of approximately 50 km/h, the at least one sensor unit thereafter generating signals in response to noise, a number of the signals generated after the sensitivity reduction being reduced compared to a number of signals the at least one sensor is configured to produce in response to the noise prior to the sensitivity reduction. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification