Method of and an apparatus for displaying the output of an internal combustion engine
First Claim
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1. A method of displaying an output of an internal combustion engine, comprising the steps of:
- detecting an intake air flow quantity of the engine;
detecting a rotation speed of the engine;
calculating an intake air quantity per revolution according to the intake air flow quantity and rotation speed, and finding a base output;
detecting a fuel flow quantity supplied to the engine;
calculating an air-fuel ratio according to the intake air flow quantity and fuel flow quantity;
correcting the base output with the air-fuel ratio, and calculating an engine output; and
displaying the engine output.
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Abstract
A method of and an apparatus for measuring and displaying the output of an internal combustion engine of a vehicle while the vehicle is moving. An intake air flow quantity Q and a rotation speed N of the engine are calculated to determine an intake air quantity per revolution (Q/N), and provide a base output. At the same time, the method and apparatus detect a fuel flow quantity supplied to the engine, and depending on the fuel flow quantity and intake air flow quantity, calculate an air-fuel ratio by which the base output is corrected to provide an engine output to be displayed.
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Citations
9 Claims
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1. A method of displaying an output of an internal combustion engine, comprising the steps of:
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detecting an intake air flow quantity of the engine; detecting a rotation speed of the engine; calculating an intake air quantity per revolution according to the intake air flow quantity and rotation speed, and finding a base output; detecting a fuel flow quantity supplied to the engine; calculating an air-fuel ratio according to the intake air flow quantity and fuel flow quantity; correcting the base output with the air-fuel ratio, and calculating an engine output; and displaying the engine output.
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2. An apparatus for displaying an output of an internal combustion engine, comprising:
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an intake air flow quantity detection means for detecting an intake air flow quantity of the engine; an engine speed detection means for detecting a rotation speed of the engine; a base output calculation means for calculating an intake air quantity per revolution according to the intake air flow quantity and rotation speed, and finding a base output; a fuel flow quantity detection means for detecting a fuel flow quantity supplied to the engine; an air-fuel ratio calculation means for calculating an air-fuel ratio according to the intake air flow quantity and fuel flow quantity; an engine output calculation means for correcting the base output with the air-fuel ratio, and calculating an engine output; and a display means for displaying the engine output. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. An apparatus for displaying an output of an internal combustion engine, comprising:
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an intake air flow quantity detection means for detecting an intake air flow quantity of the engine; an engine speed detection means for detecting a rotation speed of the engine; a base output calculation means for calculating an intake air quantity per revolution according to the intake air flow quantity and rotation speed, and finding a base output; a fuel flow quantity detection means for detecting a fuel flow quantity supplied to the engine; an air-fuel ratio calculation means for calculating an air-fuel ratio according to the intake air flow quantity and fuel flow quantity; an ignition timing detection means for detecting an ignition timing of the engine; an engine output calculation means for correcting the base output with the air-fuel ratio and ignition timing, and calculating an engine output; and a display means for displaying the engine output.
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Specification