Patent application number | Description | Published |
20090007875 | INTAKE CONTROLLER FOR INTERNAL COMBUSTION ENGINE - An intake controller includes a casing defining an intake passage that communicates with a combustion chamber of an engine, a valve received in the casing to open/close the passage, a rotational shaft that changes an opening degree of the valve, an actuator having a gear that drives the valve through the shaft, a gear retaining member retaining the gear, a sensor including a magnet that rotates according to rotation of the shaft and a magnetic detection element that detects magnetic flux generated from the magnet, and a sensor retaining member retaining the sensor. The sensor detects the opening degree of the valve based on a change of density of the magnetic flux passing through the element. One of the gear and the gear retaining member, and one of the sensor and the sensor retaining member are separately fixed on the shaft. | 01-08-2009 |
20090050094 | INTAKE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - An intake control device for an internal combustion engine includes an intake air induction duct, a housing, a valve, and a slope member. The intake air induction duct includes a bonding surface that is bonded with an attachment surface of the internal combustion engine, and the intake air induction duct defines therein a receiving chamber that opens at the bonding surface. The housing is received in the receiving chamber, and the housing defines therein an intake passage that is communicated with an intake port of the internal combustion engine. The valve is received in the housing for opening and closing the intake passage. The slope member cancels a step provided between the intake port and the intake passage. | 02-26-2009 |
20090050098 | INTAKE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - An intake control device for an internal combustion engine includes an intake air induction duct, a housing, a valve, and a gasket. The housing is received in a receiving chamber of the intake air induction duct. The valve is received in the housing for opening and closing an intake passage defined in the housing. The gasket is mounted on one of (a) a position between the intake air induction duct and the attachment surface, and (b) a position between the housing and a wall surface of the receiving chamber. The housing opposes the attachment surface and is spaced from the attachment surface by a predetermined clearance The gasket has an elastic deformation portion that is positioned between the housing and the attachment surface. | 02-26-2009 |
20090133255 | PASSAGE CONTROL DEVICE - A passage intake control device includes a passage member, a valve disposed in the passage member and a shaft passing through a through hole of a valve shaft part of the valve. The valve shaft part includes a fitting hole portion as a part of the through hole. The fitting hole portion is provided by at least a first wall, a second wall, a third wall and a fourth wall. The shaft includes a fitting part having a polygonal shape including at least a first shaft surface a second shaft surface, a third shaft surface and a fourth shaft surface. The fitting part is fitted in the fitting hole portion such that the first to fourth shaft surfaces are opposed to the first to fourth walls of the fitting hole portion, respectively. The first and second walls have protruded ribs. The third and fourth walls include flat portions. | 05-28-2009 |
20090255121 | MANUFACTURING METHOD OF VALVE UNIT - In a manufacturing method of a valve unit, which includes a valve having a rotatable shaft that is rotatably supported by a housing through a bearing to open and close a fluid passage defined in the housing, the housing and the valve are simultaneously molded in a mold assembly. The bearing is installed between the housing and the rotatable shaft during execution of the molding of the housing and the valve. | 10-15-2009 |
20100122680 | INTAKE SYSTEM FOR INTERNAL COMBUSTION ENGINE - An intake system for an engine includes a duct defining an intake passage therein, and a cantilevered valve including a valve main body opening/closing the intake passage, a shaft supporting the body, and a valve extension portion. The duct includes a reduced passage portion between the duct and the body when the body is in a fully closed position, a recess accommodating the body and the extension portion when the body is fully opened, and a pressure introduction passage formed between the duct and the body when the body is fully closed, and communicating with a space between the body and the extension portion when the body is fully closed. The extension portion includes a sealing part. The duct and the sealing part define a clearance therebetween when the body is fully closed. The clearance has a smaller sectional area than the reduced passage portion. | 05-20-2010 |
20100251987 | AIR INTAKE DEVICE FOR INTERNAL COMBUSTION ENGINE - An L-shaped rotary valve has a pair of side plates and a valve plate. The rotary valve is rotatably supported in a housing at a shaft | 10-07-2010 |
20110107995 | AIR INTAKE DEVICE FOR INTERNAL COMBUSTION ENGINE - An air intake device for an engine includes a duct having therein a first air flow passage, a housing having therein a second air flow passage, a rotary valve having a valve plate. A block of the housing, which conducts intake air to an intake port of a cylinder head, has a circular opposed surface that follows a shape of a curved surface portion of the valve plate. Moreover, the block of the housing has a protrusion that protrudes toward an upstream side of the second air flow passage in an air flow direction so as to contact a duct protrusion of the duct. Therefore, a localized flow of the intake air, which has flowed into the second air flow passage from an opening of the first air flow passage, can be restrained from spreading, and a flow rate of the localized flow can be restrained from slowing down. | 05-12-2011 |
20110239975 | AIR-INTAKE APPARATUS OF INTERNAL COMBUSTION ENGINE - An inner ring of a bearing is fixed to an outer periphery of a central portion of a shaft between a pair of facing sections. An outer ring of the bearing is fixed to a hole wall surface of a shaft accommodation recess. A spring is accommodated between one of the pair of facing sections and the bearing in a state where the spring is compressed in a rotational axis direction of a pin rod for pressing the bearing against the other one of the pair of facing sections. Thus, defects such as galling or friction between a casing and rotary valves can be inhibited. Accordingly, occurrence of wear or an abnormal noise between the casing and the rotary valves can be inhibited. | 10-06-2011 |
20120247440 | EXHAUST GAS RECIRCULATION VALVE - An EGR valve includes an aluminum valve body, an outer metal ring, an inner resin ring, a butterfly valve, and a seal ring. The valve body includes a gas passage therein. The gas passage is part of an EGR passage, through which EGR gas is returned from an exhaust passage to intake passage of an engine. The outer ring has a cylindrical shape, and is fixed and disposed on an inner wall of the gas passage. The inner ring has a cylindrical shape, and is disposed on an inner peripheral wall of the outer ring. The butterfly valve opens or closes an inside of the inner ring, and includes a seal fitting groove at an outer peripheral edge of the butterfly valve. The seal ring is fitted into the groove, and seals a clearance between the butterfly valve and the inner ring when the butterfly valve is closed. | 10-04-2012 |
20120248353 | VALVE APPARATUS - When a valve body is rotated toward a full-close position in a valve-close mode, a control portion controls an electric motor so that the rotating speed of the valve body is lower than that in a valve-open mode. A rotating speed of the valve body around the shaft in the valve-close mode is lower than that in the valve-open mode. Thus, when the seal ring is brought into contact with the inner wall surface, an impact generated therebetween can be moderated. While the valve body is rotated toward the full-close position, a seal ring is gradually elastically deformed. A sliding friction between the seal ring and the inner wall surface can be reduced. | 10-04-2012 |
20130263830 | EXHAUST GAS RECIRCULATION DEVICE - A rotational angle sensor for an EGR valve memorizes a correlated characteristic between hall voltage and output voltage. Hall voltage of the rotational angle sensor at a reference angle is matched to a boundary value for the hall voltage on a valve closing side, wherein the reference angle is set at such an angle, which is shifted by a predetermined angle in the valve closing side from an upper-limit angle of a flow-rate dead zone. A valve full-closing control is carried out in order that the hall voltage will coincide with the boundary value on the valve closing side. An actual value of the rotational angle coincides with a value, which is shifted from the reference angle in a valve closing or opening direction by a changing range decided by changing factors of a sensor side and/or a mechanical-part side. | 10-10-2013 |
20130333648 | VALVE CONTROL DEVICE - A cam full close stopper defines a cam full close position that is a limit position of a rotatable range of a cam. A sensor element outputs a signal corresponding to a rotation angle of the cam. A signal processor changes the signal output from the sensor element into a sensor output. A storage part memorizes a data table representing a correspondence relationship between the rotation angle of the cam and the sensor output of the signal processor in a predetermined form, characteristics of the sensor output being adjustable at a plurality of points with respect to the rotation angle of the cam. The storage part memorizes the sensor output of the signal processor when the cam is fully closed at the cam full close position. | 12-19-2013 |
20140034029 | VALVE APPARATUS - A valve apparatus performs at least one of a first operation in which an electric motor is energized in a valve-close direction and a rotation shaft is rotated until its rotation is stopped and a second operation in which the electric motor is deenergized and a valve is fully closed by a biasing force of a return spring. Thereby, a rotation angle of the rotation shaft becomes a rotation-stop angle or the rotation angle becomes in the backlash range, so that a biasing force of the return spring is not transmitted to the rotation shaft. Then, the electric motor generates a specified torque, which is less than a valve-opening torque by which the valve starts opening. Thereby, a rotation angle of the rotation shaft can be stopped at a full-close angle. The full-close angle can be made correspond to an output of a rotational angle sensor. | 02-06-2014 |
20140311464 | EXHAUST SYSTEM FOR INTERNAL COMBUSTION ENGINE - In an exhaust system for an internal combustion engine, an output member is configured to transmit power generated by a motor to a valving element via a valve stem. An output shaft is disposed on a rotation central axis of an output gear and coupled with the output gear to be rotatable integrally therewith. A follower is disposed eccentrically relative to a rotation central axis of the output shaft and connected to the output shaft to be rotatable integrally therewith. A first accommodating chamber accommodates at least the valve stem and the follower. A second accommodating chamber accommodates at least the motor and the output gear. A housing includes a housing wall that divides the first chamber from the second chamber. The housing wall includes a first bearing slidably supporting the output shaft in its rotation direction, and a cylindrical first bearing holder holding outer periphery of the first bearing. | 10-23-2014 |