Throttle loss recovery and supercharging system for internal combustion engines
AssigneeInternational Engine Intellectual Property Company, LLC
InventorsShouhao Wu, Robert L. Rowells
Life of this patent
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Abstract
A system and method of creating sub-atmospheric and super-atmospheric pressure in an intake manifold (20) of an internal combustion engine (10) that has cylinders (14) within which fuel combusts with air that has entered the cylinders via the intake manifold. A positive displacement airflow control device (26) is disposed upstream of the intake manifold. Sub-atmospheric pressure in the intake manifold is created by applying negative external torque to a shaft (28) of the positive displacement airflow control device and super-atmospheric pressure is created by applying positive external torque to the shaft (28).
Claims20
An internal combustion engine comprising cylinders within which fuel combusts with air that has entered the cylinders via an intake manifold in an engine air intake system, and a positive displacement airflow control device that is disposed in the engine air intake system upstream of the intake manifold and has a shaft coupled to a conversion device that selectively applies to the shaft of the positive displacement airflow control device negative external torque for throttling intake airflow that results in the engine creating sub-atmospheric pressure in the intake manifold and positive external torque for causing the positive displacement airflow control device to create super-atmospheric pressure in the intake manifold.
A method of creating sub-atmospheric and super-atmospheric pressure in an intake manifold of an intake system of an internal combustion engine that has cylinders within which fuel combusts with air that has entered the cylinders via the intake manifold, the method comprising operating a positive displacement airflow control device that is disposed in the engine intake system upstream of the intake manifold to selectively apply negative external torque to a shaft of the positive displacement airflow control device to throttle intake airflow that results in the engine creating sub-atmospheric pressure in the intake manifold and positive external torque to the shaft of the positive displacement airflow control device to cause the positive displacement airflow control device to create super-atmospheric pressure in the intake manifold.
Dependencies are inferred from the claim text.