Actuator for intake manifold

Patent metadata

Field	Value
Publication number	US-2016369753-A1
Application number	US-201414901498-A
Country	US
Kind code	A1
Filing date	Jun 26, 2014
Priority date	Jun 27, 2013
Publication date	Dec 22, 2016
Grant date	—

Abstract

Disclosed herein is an actuator for an intake manifold, wherein the actuator may include: a housing having a negative pressure space; an operating unit operated by the pressure of air introduced into and discharged from the negative pressure space, and rotating the variable valve; an exhaust flow path connected to an external negative pressure supply source; an intake flow path receiving external air which raises the pressure of the negative pressure space; a spool hole formed in the housing so as to communicate with the exhaust flow path and the intake flow path; an air entry and exit flow path formed in the housing so as to communicate with the negative pressure space and the spool hole; a valve body selectively opening/closing the exhaust flow path and the intake flow path; and a solenoid unit operating the valve body.

First claim

1 . An actuator for an intake manifold, which rotates a variable valve arranged in a runner of an intake manifold of a vehicle so as to variably change an air intake path in the runner, the actuator comprising:
a housing having a negative pressure space in which negative pressure is formed; an operating unit operated by the pressure of air introduced into and discharged from the negative pressure space, and rotating the variable valve; an exhaust flow path formed at one side of the housing, and connected to an external negative pressure supply source through an exhaust pipe such that negative pressure is formed in the negative pressure space; an intake flow path formed in the housing, and receiving external air which raises the pressure of the negative pressure space; a spool hole formed in the housing so as to communicate with the exhaust flow path and the intake flow path, and housing a valve body therein; an air entry and exit flow path formed in the housing so as to communicate with the negative pressure space and the spool hole; a valve body slidably installed in the spool hole, and selectively opening/closing the exhaust flow path and the intake flow path; and a solenoid unit operating the valve body.

2 . The actuator according to claim 1 , wherein the housing is over-molded to surround the outside of the solenoid unit.

3 . The actuator according to claim 1 , wherein the solenoid unit comprises:
a coil wound around the outside of a core; the core moving the valve body using an electromagnetic force generated when a current is applied to the coil; and an elastic member restoring the valve body.

4 . The actuator according to claim 3 , wherein the intake flow path is formed through the core.

5 . The actuator according to claim 1 , wherein the operating unit comprises:
an operating member deformed by the pressure of the air introduced into and discharged from the negative pressure space; an operating bar fixed and coupled to the operating member and the variable valve; and an elastic spring restoring the operating member.

6 . The actuator according to claim 1 , wherein the housing has a fixing groove formed at one side thereof so as to be fixed to the intake manifold.

Assignees

• Hyundai Kefico Corp

Inventors

• Kang Hun Cheol
• Park Sang Hoon
• So Byung-Sam

Classifications

• F02M35/10118 Primary

  with variable cross-sections of intake ducts along their length; Venturis; Diffusers · CPC title

• F02M35/104 Primary

  Intake manifolds · CPC title

• F02M35/10072

  Intake runners · CPC title

• F02B27/02

  the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means (in exhaust systems only F02B27/06) · CPC title

• F02M35/116

  for engines with cylinders in V-arrangement or arranged oppositely relative to the main shaft · CPC title