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US 7,826,957 B2Granted
Engine control responsive to varying amounts of alcohol in fuel
AssigneeFord Global Technologies, LLC
InventorPhil Andrew Fabien
Life of this patent
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Abstract
Various systems and methods are described for operating an engine in a vehicle in response to fuel having varying amounts of alcohol. One example method comprises delivering fuel to the engine, limiting engine speed during vehicle operation to a maximum permitted engine speed, the maximum permitted engine speed responsive to the amount of alcohol in the fuel.
Claims20
A method for operating an engine in a vehicle, the method comprising:
- delivering fuel to the engine, the fuel having a varying alcohol amount;
- and
- limiting engine speed during vehicle operation to a maximum permitted engine speed, the maximum permitted engine speed responsive to the amount of alcohol.
A method for operating an engine in a vehicle, the method comprising:
- delivering fuel to the engine, the fuel having a varying alcohol amount;
- limiting engine speed during vehicle operation to a first permitted engine speed, the first permitted engine speed responsive to the amount of alcohol in the fuel;
- and
- limiting engine speed during vehicle operation to a second permitted engine speed, the second permitted engine speed being greater than the first permitted engine speed and responsive to the amount of alcohol in the fuel.
1 more element
A system for an engine in a vehicle, the system comprising:
- an automatic transmission having a plurality of gear ratios;
- the engine coupled to the transmission via a torque converter;
- a control system configured to deliver fuel to the engine, the fuel having a varying alcohol amount;
- limit engine speed during vehicle operation to a first permitted engine speed responsive to the amount of alcohol;
- limit engine speed during vehicle operation to a second permitted engine speed, the second permitted engine speed being greater than the first permitted engine speed and responsive to the amount of alcohol;
- and adjusting selection of the gear ratios responsive to the amount of alcohol.
3 more elements
Dependencies are inferred from the claim text.