Indicating system and method for determining an engine parameter
First Claim
1. An indicating system for determining a parameter of combustion in an internal combustion engine without direct measurement of crank angle of the engine, comprisinga sensor unit which records a measured variable having only a component that is dependent on the crank angle, anda computing unit having an input that is connected to the sensor unit and an output that outputs the engine parameter determined in the computing unit, said computer unit receiving as input for determining the parameter of combustion only the measured variable recorded by the sensor unit and computing the engine parameter to the output solely on the basis of the measured variable and crank angle values computed from the measured variable.
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Accused Products
Abstract
To reduce the complexity of an indicating system 6 on an internal combustion engine for determining a parameter, the invention provides that on the basis of the measured variable a computing unit 8 for the indicating system 6 computes crank angle information, and on the basis of the crank angle information thus computed and the measured variable determines an engine parameter.
18 Citations
15 Claims
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1. An indicating system for determining a parameter of combustion in an internal combustion engine without direct measurement of crank angle of the engine, comprising
a sensor unit which records a measured variable having only a component that is dependent on the crank angle, and a computing unit having an input that is connected to the sensor unit and an output that outputs the engine parameter determined in the computing unit, said computer unit receiving as input for determining the parameter of combustion only the measured variable recorded by the sensor unit and computing the engine parameter to the output solely on the basis of the measured variable and crank angle values computed from the measured variable.
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12. A method for determining a parameter of combustion in an internal combustion engine without direct measurement of crank angle of the engine, said method comprising steps of:
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(a) measuring a variable of engine operation which includes only a component that is dependent on the crank angle, (b) computing crank angle values from the measured variable of step (a), and (c) determining the parameter of combustion exclusively from the measured variable of step (a) and the crank angle values computed in step (b). - View Dependent Claims (13, 14, 15)
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Specification