Abstract: An engine idle speed control device enhances engine cold-start performance even in engines of large displacement. The device reduces noise created by intersecting air flows after bypassing the throttle valve. The device includes first and second passages, each mounted on a throttle body for enabling air flow bypassing the throttle valve, an ISA so mounted as to control the opening of the first passage, and temperature valve unit so mounted as to control the opening of the second passage in response to engine temperature.

Abstract: An engine idle speed control device enhances engine cold-start performance even in engines of large displacement. The device reduces noise created by intersecting air flows after bypassing the throttle valve. The device includes first and second passages, each mounted on a throttle body for enabling air flow bypassing the throttle valve, an ISA so mounted as to control the opening of the first passage, and temperature valve unit so mounted as to control the opening of the second passage in response to engine temperature.

Abstract: An intake system adapted and constructed to reduce noise without change or alternation to existing structure, the system comprising: an intake duct formed for intake of air; a resonator formed at one side of the intake duct; a flow passage connected to the intake duct for air to be infused from the intake duct; a main valve formed in the flow passage for controlling amount of air infused from the intake duct; a throttle body mounted with an idle speed actuator formed at an air route communicatively equipped at the flow passage for controlling the amount of air; and a connecting member for connecting the air route and the resonator.

Abstract: An intake system adapted and constructed to reduce noise without change or alternation to existing structure, the system comprising: an intake duct formed for intake of air; a resonator formed at one side of the intake duct; a flow passage connected to the intake duct for air to be infused from the intake duct; a main valve formed in the flow passage for controlling amount of air infused from the intake duct; a throttle body mounted with an idle speed actuator formed at an air route communicatively equipped at the flow passage for controlling the amount of air; and a connecting member for connecting the air route and the resonator.