ETHANOL CONTENT DETERMINATION SYSTEMS AND METHODS
First Claim
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1. A combustion control system for a vehicle, comprising:
- a position determination module that determines a crankshaft angle where a predetermined percentage of a fuel was combusted within a cylinder of an engine during an engine cycle based on one of pressure within said cylinder measured by a cylinder pressure sensor during said engine cycle and torque on a crankshaft measured by a torque sensor during said engine cycle; and
an ethanol determination module that determines an ethanol content of said fuel based on said crankshaft angle.
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Abstract
A combustion control system for a vehicle comprises a position determination module and an ethanol determination module. The position determination module determines a crankshaft angle where a predetermined percentage of a fuel was combusted within a cylinder of an engine during an engine cycle based on one of pressure within the cylinder measured by a cylinder pressure sensor during the engine cycle and torque on a crankshaft measured by a torque sensor during the engine cycle. The ethanol determination module determines an ethanol content of the fuel based on the crankshaft angle.
12 Citations
19 Claims
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1. A combustion control system for a vehicle, comprising:
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a position determination module that determines a crankshaft angle where a predetermined percentage of a fuel was combusted within a cylinder of an engine during an engine cycle based on one of pressure within said cylinder measured by a cylinder pressure sensor during said engine cycle and torque on a crankshaft measured by a torque sensor during said engine cycle; and an ethanol determination module that determines an ethanol content of said fuel based on said crankshaft angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 14)
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10. A combustion control system for a vehicle, comprising:
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a position determination module that determines a crankshaft angle where a predetermined percentage of a fuel was combusted within a cylinder of an engine during an engine cycle based on pressure within said cylinder measured by a cylinder pressure sensor during said engine cycle; and an ethanol determination module that determines an ethanol content of said fuel based on said crankshaft angle. - View Dependent Claims (11, 12, 13)
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15. A combustion control system for a vehicle, comprising:
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a position determination module that determines a crankshaft angle where a predetermined percentage of a fuel was combusted within a cylinder of an engine during an engine cycle based on torque on a crankshaft measured by a torque sensor during said engine cycle; and an ethanol determination module that determines an ethanol content of said fuel based on said crankshaft angle. - View Dependent Claims (16, 17, 18, 19)
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Specification