초록 ▼

An anti-afterburn device for an engine having an air pump, comprising two chambers defined within a housing by a pressure differential piston and a control valve connected to the piston. An intake manifold of the engine is connected to the chambers, at least one of which is connected to the intake m

An anti-afterburn device for an engine having an air pump, comprising two chambers defined within a housing by a pressure differential piston and a control valve connected to the piston. An intake manifold of the engine is connected to the chambers, at least one of which is connected to the intake manifold through an orifice and an electrically-operated three-way valve so as to operate the control valve through the piston when abrupt pressure change in said manifold is occured or when the three-way valve is energized to communicate the one chamber with a pressure source.

대표청구항 ▼

An anti-afterburn device for an engine having an air pump, comprising a control valve for controlling air supply, a pressure differential means dividing a housing into first and second chambers and being connected to said control valve, a spring urging said control valve in one direction, first and

An anti-afterburn device for an engine having an air pump, comprising a control valve for controlling air supply, a pressure differential means dividing a housing into first and second chambers and being connected to said control valve, a spring urging said control valve in one direction, first and second conduits connecting respectively said chambers with an intake manifold of the engine, a first orifice provided in one of said conduits, a separate air pressure source, and a first three-way valve provided in said first conduit and connected to said first chamber to urge the pressure differential means opposite to that of the spring by supply of an air pressure to the first chamber, said first three-way valve being adapted to selectively supply an intake manifold negative pressure or the air pressure from the separate pressure source into said first chamber, said control valve being operable to reduce the air supply upon abrupt pressure change in said intake manifold or upon supply of the air pressure from the separate pressure source, said first orifice being provided in said second conduit, and a first check valve is located in parallel with said first orifice, said check valve permitting a communication only from said second chamber to the intake manifold.