Ethanol content determination systems and methods
AssigneeGM Global Technology Operations LLC
InventorsHalim G. Santoso, Audley F. Brown
Life of this patent
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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.
Claims19
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.
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 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.
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 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.
Dependencies are inferred from the claim text.