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US 8,788,182 B2Granted
Engine speed based valvetrain control systems and methods
AssigneeGM Global Technology Operations LLC
InventorMike M. McDonald
Life of this patent
Estimating the term…
Abstract
A system for a vehicle includes a trigger module, a fuel control module, and a cylinder control module. The trigger module generates a trigger when an engine speed is greater than a first predetermined speed. The first predetermined speed is greater than zero. The fuel control module cuts off fuel to cylinders of the engine in response to the generation of the trigger. The cylinder control module selectively disables opening of intake and exhaust valves of the cylinders in response to the generation of the trigger after the fuel is cut off.
Claims20
A system for a vehicle, comprising:
- a trigger module that generates a trigger when an engine speed is greater than a first predetermined speed, wherein the first predetermined speed is greater than zero;
- a fuel control module that cuts off fuel to cylinders of the engine in response to the generation of the trigger;
- and
- a cylinder control module that selectively disables opening of intake and exhaust valves of the cylinders in response to the generation of the trigger after the fuel is cut off.
1 more element
A method for a vehicle, comprising:
- generating a trigger when an engine speed is greater than a first predetermined speed,
- wherein the first predetermined speed is greater than zero;
- cutting off fuel to cylinders of the engine in response to the generation of the trigger;
- and
- selectively disabling opening of intake and exhaust valves of the cylinders in response to the generation of the trigger after the fuel is cut off.
2 more elements
Dependencies are inferred from the claim text.