The valve opening/closing timing control device includes: the driving rotating body; the driven rotating body; an advancing chamber and a retarding chamber formed by partitioning a fluid pressure chamber between the driving and driven rotating bodies; and a phase control unit supplying pressurized fluid to the advancing or retarding chamber via an advancing channel or a retarding channel penetrating through the driven rotating body. In the driven rotating body, an outer circumferential member and an inner circumferential member are formed integrally/coaxially with each other. The advancing and retarding channel form a predetermined angle. Between every pair of an advancing channel and a retarding channel, a groove portion is formed in one of an inner circumferential surface of the outer circumferential member and an outer circumferential surface of the inner circumferential member, and an elongated protruding portion is formed on the other, at a position that corresponds to the groove portion.

A valve timing controller includes a driving rotor, a driven rotor, a planetary rotor, a planetary carrier, and an elastic component to produce a restoring force biasing the planetary rotor to an eccentric side such that the driving rotor is inclined to the driven rotor. The driving rotor has an inclination angle θ1 relative to the driven rotor in a first inclination state where the driving rotor is in contact with the driven rotor on both sides in the axial direction. The inclination angle θ1 is smaller than an inclination angle θ2 in a second inclination state where the driving rotor is in contact with the driven rotor on both sides in the radial direction, and is smaller than an inclination angle θ3 in a third inclination state where the driving rotor is in contact with the camshaft on both sides in the radial direction.

A fixture assembly includes a primary gage member, camshaft gages, a crankshaft gage and an engine gage, all of which have planar datum surfaces that are each dimensionally located relative to the primary gage member planar datum surface. The engine gage includes an engine datum surface, and is sized and shaped to receive, support and dimensionally locate the engine. An engine block datum surface is configured to be positioned on the engine datum surface thereby locating the engine relative to the primary gage member datum surface. The primary, first, second and engine datum surfaces are fixed in a parallel relationship to each other so as to form a parallel alignment system such that when the fixture assembly datum surfaces engage and form parallel alignment with the corresponding engine datum surfaces, the camshafts and crankshaft are angularly located in a predetermined angular orientation for proper timing of the engine assembly.

A fixture assembly includes a primary gage member, camshaft gages, a crankshaft gage and an engine gage, all of which have planar datum surfaces that are each dimensionally located relative to the primary gage member planar datum surface. The engine gage includes an engine datum surface, and is sized and shaped to receive, support and dimensionally locate the engine. An engine block datum surface is configured to be positioned on the engine datum surface thereby locating the engine relative to the primary gage member datum surface. The primary, first, second and engine datum surfaces are fixed in a parallel relationship to each other so as to form a parallel alignment system such that when the fixture assembly datum surfaces engage and form parallel alignment with the corresponding engine datum surfaces, the camshafts and crankshaft are angularly located in a predetermined angular orientation for proper timing of the engine assembly.

A valve actuation system for an internal combustion engine is disclosed. The engine has a first set of cylinders having a first set of exhaust valves and a second set of cylinders having a second set of exhaust valves. The valve actuation system for the exhaust valves includes one or more first cams having a compression-release lobe and a main exhaust lobe adapted to transfer valve actuation motion to the first set of exhaust valves, and one or more second cams having an early exhaust valve opening (EEVO) lobe and a main exhaust lobe adapted to transfer valve actuation motion to the second set of exhaust valves. The valve actuation system may provide any combination of (i) main exhaust valve actuation with or without compression release actuation with (ii) main exhaust valve actuation with or without EEVO for the two sets of cylinders.

A clip filter for a hydraulic valve, the clip filter comprising a carrier frame; and filter elements received in the carrier frame, wherein the carrier frame is configured annular and includes a clip filter lock, wherein a first end of the carrier frame and a second end of the carrier frame are engageable with each other for closing the clip filter, wherein the first end of the carrier frame includes a lug shaped clip element and the second end of the carrier frame includes a recess that is complementary to the lug shaped clip element, and wherein a clip filter lock is configured for a maximized opening force.

A camshaft adjusting device for an internal combustion engine, comprising a housing comprising a bearing sleeve arranged to be concentrically disposed on a camshaft, the bearing sleeve arranged to be guided through a cylinder head wall, an annular gap arranged to be inside the cylinder head, the annular gap arranged to be formed between the bearing sleeve and the camshaft, an adjusting mechanism comprising a control shaft arranged within the housing, a traction mechanism comprising a drive gear secured to the bearing sleeve outside the cylinder head, and a ball bearing arranged within the drive gear and securing the control shaft within the adjusting mechanism.

A camshaft adjusting device for an internal combustion engine, comprising a housing comprising a bearing sleeve arranged to be concentrically disposed on a camshaft, the bearing sleeve arranged to be guided through a cylinder head wall, an annular gap arranged to be inside the cylinder head, the annular gap arranged to be formed between the bearing sleeve and the camshaft, an adjusting mechanism comprising a control shaft arranged within the housing, a traction mechanism comprising a drive gear secured to the bearing sleeve outside the cylinder head, and a ball bearing arranged within the drive gear and securing the control shaft within the adjusting mechanism.

The invention relates to a control device for a multi-cylinder engine provided with an oil pump, a hydraulically operated valve characteristic control device which changes valve characteristics of at least one of an intake valve and an exhaust valve; and a hydraulically operated valve stop device which stops at least one of the intake valve and the exhaust valve when a reduced cylinder operation is performed. The control device for a multi-cylinder engine is provided with a valve control unit which operates the valve stop device after an operation of the valve characteristic control device is completed when the valve characteristic control device is operated at a time of request for the reduced cylinder operation.

A multi-part rotor (1) for a hydraulic camshaft adjuster, including two partial rotor members (2) which rest against each other along a separation plane (3) extending perpendicular to the axial direction and which jointly define hydraulic medium ducts (4) extending within said separation plane (3) and, including an additional rotor member (5) that conducts hydraulic medium from opposite axial directions in a targeted manner to different hydraulic medium ducts (4). The additional rotor member (5) or at least one positively engaging anti-twist element (6) is secured to one or both partial rotor members (2) for conjoint rotation therewith.