FUEL VOLATILITY COMPENSATION FOR ENGINE COLD START SPEED CONTROL
First Claim
Patent Images
1. A fuel control system comprising:
- a plurality of devices generating a plurality of parameter signals comprising an engine runtime signal and at least one of an engine load signal, a temperature signal and a barometric pressure signal;
a modification module generating a modification signal based on said plurality of parameter signals; and
a control module compensating for a current fuel volatility by adjusting a current air/fuel mixture of an engine based on said modification signal.
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Abstract
A fuel control system includes devices that generate parameter signals. The parameter signals include an engine runtime signal and at least one of an engine load signal, a temperature signal and a barometric pressure signal. A modification module generates a modification signal based on the parameter signals. A control module compensates for a current fuel volatility by adjusting a current air/fuel mixture of an engine based on the modification signal.
9 Citations
20 Claims
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1. A fuel control system comprising:
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a plurality of devices generating a plurality of parameter signals comprising an engine runtime signal and at least one of an engine load signal, a temperature signal and a barometric pressure signal; a modification module generating a modification signal based on said plurality of parameter signals; and a control module compensating for a current fuel volatility by adjusting a current air/fuel mixture of an engine based on said modification signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. The fuel control system wherein said control module enables said air/fuel ratio adjustment when said temperature signal is less than a predetermined temperature.
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13. A fuel control system comprising:
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an engine runtime indicator generating an engine run time signal; an engine load module generating said engine load signal a temperature sensor generating a temperature signal; a barometric pressure sensor generating a barometric pressure signal; and a control module compensating for a current fuel volatility by adjusting a current air/fuel mixture of an engine based on said engine run time signal, said engine load signal, said temperature signal, and said barometric pressure signal. - View Dependent Claims (14, 15)
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16. A fuel control method comprising:
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generating a plurality of parameter signals comprising an engine runtime signal and at least one of an engine load signal, a temperature signal and a barometric pressure signal; generating a plurality of modification signals based on said plurality of parameter signals; generating a combined signal based on said plurality of modification signals; and adjusting a current idle speed by adjusting a current air/fuel mixture of an engine based on said combined signals. - View Dependent Claims (17, 18, 19, 20)
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Specification