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US 10,767,571 B2Granted
Methods and system for operating an engine
AssigneeFord Global Technologies, LLC
InventorsChristopher Paul Glugla, Imtiaz Ali, Lyth Alobiedat, Timothy Joseph Clark
Life of this patent
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Abstract
Systems and methods for operating an engine that includes a compression ratio linkage for adjusting engine compression ratio are described. The systems and methods provide different ways of changing a compression ratio of an engine based on forecast or anticipated engine operating conditions. In one example, the forecast or anticipated engine operating conditions may include a forecast or anticipated transmission gear shift.
Claims20
An engine operating method, comprising:
- adjusting an engine's compression ratio via a controller responsive to present engine speed and engine load;
- forecasting a shifting of a transmission from a first gear to a second gear via the controller;
- and
- adjusting an engine's compression ratio via the controller responsive to an engine speed and engine load based on the forecasted shifting of the transmission.
1 more element
An engine operating method, comprising:
- adjusting an engine's compression ratio via a controller responsive to present engine speed and engine load;
- forecasting a shifting of a transmission from a first gear to a second gear while an accelerator pedal is being released or immediately after the accelerator pedal is released via the controller;
- and
- maintaining an engine's compression ratio from a time when the shifting of the transmission from the first gear to the second gear begins to a time when shifting of the transmission from the first gear to the second gear ends via the controller.
1 more element
A vehicle system, comprising:
- an engine including a compression ratio adjustment linkage;
- an automatic transmission coupled to the engine;
- and
- a controller including executable instructions stored in non-transitory memory to change the engine's compression ratio via the compression ratio adjustment linkage according to an increasing or decreasing accelerator pedal position and a forecast gear shifting of the automatic transmission from a first gear to a second gear.
1 more element
Dependencies are inferred from the claim text.