INDUCTION AIR ACOUSTICS MANAGEMENT FOR INTERNAL COMBUSTION ENGINE
First Claim
1. A method for controlling an internal combustion engine to manage induction acoustics, the method comprising:
- closing the throttle in response to an inducted engine air amount that varies about an average inducted engine air amount to manage induction acoustics.
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Accused Products
Abstract
A system and method for controlling an internal combustion engine control an actuator in response to variations of intake airflow relative to an average intake airflow to manage induction acoustics. The system and method may include controlling an actuator, such as a throttle valve, to increase intake manifold vacuum in response to intake airflow. In an engine having electronically actuated intake and/or exhaust valves, intake airflow is estimated based on at least engine speed and valve timing and compared to a measured intake airflow to determine a first difference. The measured airflow is divided into a steady-state and transient term or component with a second difference determined based on the transient component and a target value. Throttle valve position is selectively controlled to increase vacuum in response to a combination of the first and second difference to manage induction acoustics.
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Citations
20 Claims
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1. A method for controlling an internal combustion engine to manage induction acoustics, the method comprising:
closing the throttle in response to an inducted engine air amount that varies about an average inducted engine air amount to manage induction acoustics. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for managing induction acoustics of an internal combustion engine, the system comprising:
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an intake airflow sensor; a plurality of electronically actuated intake valves; an electronically controlled throttle valve; and a controller in communication with the intake airflow sensor, the plurality of electronically actuated intake valves, and the electronically controlled throttle valve, the controller controlling the throttle valve to increase manifold vacuum in response to at least the intake airflow sensor to manage induction acoustics. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A computer readable storage medium having stored data representing instructions executable by a computer to control an internal combustion engine to manage induction acoustics, the computer readable storage medium comprising:
instructions for controlling at least one engine actuator in response to variation of an inducted engine air amount about an average inducted engine air amount. to manage induction acoustics. - View Dependent Claims (17, 18, 19, 20)
Specification