US 2006/0037310 A1 · Airflow control valve for use in an internal combustion engine

Abstract

An airflow control valve is composed of a housing forming an air passage therein and an electromagnetically driven valve disposed in the air passage. The valve divides the air passage into an upstream passage having an air inlet port and a downstream passage having an outlet port open to an exhaust pipe. A barrier facing an exhaust gas blown back from the exhaust pipe is formed in the downstream passage in order to reduce an amount of deposits accumulating on and around the valve due to foreign particles contained in the exhaust gas. The barrier may be a dead end space in which the exhaust gas stagnates or a wall interfering with a flow of the exhaust gas. A one-way valve may be disposed immediately downstream of the valve to prevent the exhaust gas from flowing toward the valve.

Claims14

Dependent claims

An airflow control valve for use in an internal combustion engine, the airflow control valve comprising:

a housing forming an air passage therein;
a valve disposed in the air passage for opening or closing the air passage, the air passage being separated by the valve into an upstream passage having an inlet port and a downstream passage having an outlet port from which air is blown out, the outlet port being open to a source of exhaust gas exhausted from the internal combustion engine;
and
a barrier disposed in the down stream passage to face the outlet port for reducing an amount of the exhaust gas directly hitting the valve when the exhaust gas enters the downstream passage from the outlet port.

1 more element

Dependencies are inferred from the claim text.

Airflow control valve for use in an internal combustion engine

Life of this patent

Airflow control valve for use in an internal combustion engine

Life of this patent

Abstract

Claims14