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US 6,272,427 B1Granted
Method and device for controlling an internal combustion engine in accordance with operating parameters
AssigneeRobert Bosch GmbH
InventorsErnst Wild, Manfred Pfitz, Axel Stuber, Nikolaus Benninger
Life of this patent
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Abstract
A method and a device for controlling an internal combustion engine as a function of performance characteristics such as load, engine speed, a corrected value for the intake air temperature being used for the control, the corrected value being obtained from the following formula: TANSK=T1+(TWS−T1)*f where TANSK=corrected value of the intake air temperature, T1=value (TANS) of the intake air temperature remote from the internal combustion engine determined by calculation or measured, TWS=value of the mean temperature of the intake manifold, f=weighting factor ranging from 0 to 1.
Claims14
A method for controlling an internal combustion engine, comprising the steps of:
- determining, using one of a calculation procedure and a measurement procedure, a value of an intake air temperature remote from the internal combustion engine;
- determining a corrected value of the intake air temperature according to the following formula:
- TANSK=T1+(TWS−T1)*f,
- wherein TANSK is the corrected value, T1 is the value of the intake air temperature, TWS is a mean temperature value of an intake manifold, and f is a weighting factor ranging between 0 and 1;
- and
- controlling the internal combustion engine as a function of performance characteristics which include the corrected value.
3 more elements
A device for controlling an internal combustion engine, comprising:
- a controller determining a corrected value of an intake air temperature using the following formula:
- TANSK=T1+(TWS−T1)*f
- wherein TANSK is the corrected value, T1 is a value of the intake air temperature remote from the internal combustion engine which is determined using one of a calculation procedure and a measurement procedure, TWS is a value of a mean temperature of an intake manifold, and f is a weighting factor ranging between 0 and 1,
- wherein the controller controls internal combustion engine as a function of the corrected value.
1 more element
A method for controlling an internal combustion engine, comprising the steps of:
- determining, using one of a calculation procedure and a measurement procedure, a value of an intake air temperature remote from the internal combustion engine;
- determining a corrected value of the intake air temperature according to the following formula:
- TANSK=T1+(TWS−T1)*f,
- wherein TANSK is the corrected value, T1 is the value of the intake air temperature, TWS is a mean temperature value of an intake manifold, and f is a weighting factor ranging between 0 and 1;
- controlling the internal combustion engine as a function of performance characteristics which include the corrected value;
- determining the mean temperature value of the intake manifold as a function of a weighted mean of a temperature of the internal combustion engine and the measured value of the intake air temperature;
- and
- determining the weighted mean as a function of the performance characteristics, wherein the performance characteristics include a vehicle speed.
5 more elements
A method for controlling an internal combustion engine, comprising the steps of:
- determining, using one of a calculation procedure and a measurement procedure, a value of an intake air temperature remote from the internal combustion engine;
- determining a corrected value of the intake air temperature according to the following formula:
- TANSK=T1+(TWS−T1)*f,
- wherein TANSK is the corrected value, T1 is the value of the intake air temperature, TWS is a mean temperature value of an intake manifold, and f is a weighting factor ranging between 0 and 1;
- controlling the internal combustion engine as a function of performance characteristics which include the corrected value;
- determining the mean temperature value of the intake manifold as a function of a weighted mean of a temperature of the internal combustion engine and the measured value of the intake air temperature;
- determining a first characteristic value as a function of at least one of a vehicle speed and an air volume;
- determining a second characteristic value as a function of the vehicle speed and the air volume;
- and
- determining the mean temperature value of the intake manifold according to the formula:
- TWS=(TMOT+TANS*K1)/(1+K2),
- wherein TMOT is the temperature of the internal combustion engine, TANS is the measured value of the intake air temperature, K1 is the first characteristic value, and K2 is the second characteristic value.
9 more elements
A method for controlling an internal combustion engine, comprising the steps of:
- determining, using one of a calculation procedure and a measurement procedure, a value of an intake air temperature remote from the internal combustion engine;
- determining a corrected value of the intake air temperature according to the following formula:
- TANSK=T1+(TWS−T1)*f,
- wherein TANSK is the corrected value, T1 is the value of the intake air temperature, TWS is a mean temperature value of an intake manifold, and f is a weighting factor ranging between 0 and 1;
- controlling the internal combustion engine as a function of performance characteristics which include the corrected value;
- and
- determining the mean temperature value of the intake manifold using a filter time constant and a performance characteristic-dependent time constant.
4 more elements
A method for controlling an internal combustion engine, comprising the steps of:
- determining, using one of a calculation procedure and a measurement procedure, a value of an intake air temperature remote from the internal combustion engine;
- determining a corrected value of the intake air temperature according to the following formula:
- TANSK=T1+(TWS−T1)*f,
- wherein TANSK is the corrected value, T1 is the value of the intake air temperature, TWS is a mean temperature value of an intake manifold, and f is a weighting factor ranging between 0 and 1;
- controlling the internal combustion engine as a function of performance characteristics which include the corrected value;
- and
- determining the value of the intake air temperature according to the following formula:
- T1=TANS+AGR rate*(TAGR−TANS),
- wherein AGR rate is a rate of a recirculated exhaust gas and TAGR is a temperature of the recirculated exhaust gas.
6 more elements
Dependencies are inferred from the claim text.