Method and device for providing a rotational speed and temperature indication of a supercharging device for an internal combustion engine
First Claim
1. A detection circuit configured to detect a rotational speed and a temperature of a supercharging system for an internal combustion engine, comprising:
- a rotational speed sensor configured to provide a periodic detection signal having a frequency dependent on the rotational speed of the supercharging system;
a temperature sensor configured to detect the temperature of the supercharging system; and
a modification unit configured to provide a periodic output signal having a periodicity dependent on the periodic detection signal, and configured to set a time length of a signal pulse of the periodic output signal as a function of the detected temperature of the supercharging system, wherein the periodicity of the periodic output signal provides an indication of the rotational speed of the supercharging system, and wherein the time length of the signal pulse provides an indication of the temperature of the supercharging system.
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Accused Products
Abstract
A detection circuit for providing indications of a rotational speed and a temperature of a supercharging system for an internal combustion engine is provided, which detection circuit includes: a rotational speed sensor for providing a periodic detection signal having a frequency dependent on a rotational speed in the supercharging system; a temperature sensor for detecting a temperature in the supercharging system; and a modification unit for providing a periodic output signal having a periodicity dependent on the periodic detection signal, and for setting a time length of a signal pulse of the periodic output signal as a function of the detected temperature, so that the periodic output signal provides the rotational speed indication by its periodicity and the temperature indication by the time length of the signal pulse.
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Citations
11 Claims
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1. A detection circuit configured to detect a rotational speed and a temperature of a supercharging system for an internal combustion engine, comprising:
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a rotational speed sensor configured to provide a periodic detection signal having a frequency dependent on the rotational speed of the supercharging system; a temperature sensor configured to detect the temperature of the supercharging system; and a modification unit configured to provide a periodic output signal having a periodicity dependent on the periodic detection signal, and configured to set a time length of a signal pulse of the periodic output signal as a function of the detected temperature of the supercharging system, wherein the periodicity of the periodic output signal provides an indication of the rotational speed of the supercharging system, and wherein the time length of the signal pulse provides an indication of the temperature of the supercharging system. - View Dependent Claims (2, 3, 4)
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5. A control unit for controlling the operation of an internal combustion engine having a supercharging system, comprising:
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a means for receiving a periodic signal; a means for determining a frequency of the received periodic signal; means for ascertaining a rotational speed of the supercharging system based on the determined frequency of the received periodic signal; and means for ascertaining a temperature of the supercharging system based on the time length of a signal pulse of the received periodic signal; and means for controlling the operation of the internal combustion engine as a function of at least one of the ascertained rotational speed and the ascertained temperature. - View Dependent Claims (6)
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7. An internal combustion engine system, comprising:
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a supercharging system; a detection circuit situated on the supercharging system, the detection circuit including; a rotational speed sensor configured to provide a periodic detection signal having a frequency dependent on the rotational speed of the supercharging system; a temperature sensor configured to detect the temperature of the supercharging system; and a modification unit configured to provide a periodic output signal having a periodicity dependent on the periodic detection signal, and configured to set a time length of a signal pulse of the periodic output signal as a function of the detected temperature of the supercharging system, wherein the periodicity of the periodic output signal provides an indication of the rotational speed of the supercharging system, and wherein the time length of the signal pulse provides an indication of the temperature of the supercharging system; and a control unit for controlling the operation of the internal combustion engine, wherein the control unit is connected to the detection circuit to receive the periodic output signal and configured to ascertain a rotational speed indication based on the frequency of the periodic output signal and ascertain a temperature indication based on the time length of the signal pulse of the periodic output signal.
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8. A method for providing indications of rotational speed and temperature of a supercharging system for an internal combustion engine, comprising:
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providing a periodic detection signal having a frequency dependent on the rotational speed of the supercharging system; detecting a temperature in the supercharging system; providing a periodic output signal having periodicity dependent on the periodic detection signal; and setting a time length of a signal pulse of the periodic output signal as a function of the detected temperature; wherein the periodicity of the periodic output signal provides the rotational speed indication, and wherein the time length of the signal pulse provides the temperature indication. - View Dependent Claims (9, 10, 11)
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Specification