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US 2015/0307076 A1Published application
Systems and methods for improving torque response of an engine
AssigneeFord Global Technologies, LLC
InventorThomas G. Leone
Life of this patent
Estimating the term…
Abstract
Systems and methods for improving engine torque response are presented. In one example, engine idle speed is increased to shorten engine torque response based on engine operating conditions. The methods and systems may be useful for operating an engine that is supplied a gaseous fuel.
Claims20
An engine operating method, comprising:
- directly injecting a gaseous fuel to an engine in response to a pressure of gaseous fuel stored in a fuel tank exceeding a threshold level;
- and
- increasing an idle speed of the engine and injecting the gaseous fuel to an engine air intake in response to the pressure of gaseous fuel stored in the fuel tank being less than the threshold level.
An engine operating method, comprising:
- directly injecting a gaseous fuel to an engine in response to a pressure of gaseous fuel stored in a fuel tank exceeding a threshold level;
- and
- increasing an engine idle speed, adjusting torque converter clutch locking, and engine air intake injecting the gaseous fuel to the engine in response to the pressure of gaseous fuel stored in the fuel tank being less than the threshold level.
A vehicle system, comprising:
- an engine;
- a gaseous fuel tank;
- and
- a controller including non-transitory instructions for increasing engine idle speed and adjusting a transmission shifting schedule in response to a pressure of gaseous fuel stored in the gaseous fuel tank being less than the threshold level.
1 more element
Dependencies are inferred from the claim text.