Abstract:
Die vorliegende Erfindung bezieht sich auf ein Verfahren zum Herstellen einer verstellbaren Nockenwelle sowie auf eine verstellbare Nockenwelle eines Kraftfahrzeuges, wobei die Nockenwelle wenigstens einen an zumindest einem Außenwellensegment verdrehfest angeordneten Festnocken und wenigstens einen mit einer sich konzentrisch innerhalb des Außenwellensegmentes erstreckenden Innenwelle verdrehfest angeordneten Verstellnocken aufweist, wobei das Verfahren zumindest die folgenden Schritte aufweist: Anordnen eines Außenwellensegmentes auf der Innenwelle, Erzeugen einer Oberflächenmodifikation auf der Oberfläche der Innenwelle zur Erzeugung mindestens eines Anordnungsabschnittes, Anordnen des Festnockens auf wenigstens einem Abschnitt des Außenwellensegmentes und Anordnen des Verstellnockens auf dem Anordnungsabschnitt der Innenwelle.
Abstract:
An adjustable camshaft for an internal combustion engine may have a support shaft that extends along a rotational axis; a cam pack having a cam element that is received on the support shaft such that the cam pack can be displaced along the rotational axis, wherein the cam pack can be latched on the support shaft in at least two axial latching positions; a latching element that is prestressed by way of a spring element; and a latching element receptacle disposed on the support shaft. The latching element can latch into the latching element receptacle in the latching positions. The spring element and the latching element may be received in the cam pack.
Abstract:
A timing pin module for an engine is disclosed herein. The timing pin module includes a mount end, an engagement end, an adapter, a pin, and a resilient member. The adapter, with a through hole is disposed on the mount end and is mountable to the housing cover. The pin has a longitudinal axis, a first end disposed on the engagement end, and a second end disposed on the mount end. The pin is slideably disposed in the through hole of the adapter and moves between an extended position and a retracted position. The resilient member has a first end engaged with the pin and a second end engaged with the adapter. Further, the first end of the pin engageably retains the flywheel in the top dead center position while extended, and makes sliding contact with a portion of the flywheel that is in the retracted position.
Abstract:
The invention relates to a camshaft, in particular for motor vehicle engines, comprising an outer shaft (1), an inner shaft (2) arranged coaxially in the outer shaft (1), first functional elements (3) rigidly arranged on the outer shaft (1), second functional elements (4a, 4b), which are rotatably arranged on the outer shaft (1) and fastened to the inner shaft (2) in a rotationally fixed manner, and a phase adjuster (5) connected to the outer shaft (1) and the inner shaft (2) for rotating the inner shaft (2) relative to the outer shaft (1), wherein the phase adjuster (5) is fastened to the inner shaft (2) and thereby a torque is applied. According to the invention, one of the functional elements (4a, 4b) connected to the inner shaft (2) in a rotationally fixed manner has tool accommodation surfaces (11) on the cylindrical surface side outside of a functional surface (12a, 12b). The invention further relates to such a functional element.
Abstract:
A camshaft phaser attachment system is provided for attaching a camshaft phaser to a camshaft of an internal combustion engine. The camshaft phaser attachment system includes a camshaft phaser for controllably varying the phase relationship between a crankshaft and the camshaft. The camshaft phaser attachment system also includes a camshaft phaser installation tool having a handle with a head sized to be inserted through an opening of a cover of the camshaft phaser. A plurality of notches formed on a rotor of the camshaft phaser interfit with a plurality of tangs of the head. The head includes a recess on the periphery to provide clearance relative to a bias spring capture flange extending radially inward from the opening. The head also includes a central passage extending through the head to allow a tightening tool to tighten a bolt used to hold the camshaft phaser to the camshaft.
Abstract:
A multiple-cylinder DOHC engine, including a cylinder head block, a first camshaft that is mounted on the cylinder head block and is configured to drive one of an intake valve and an exhaust valve mounted on the cylinder head block, a second camshaft that is mounted on the cylinder head block and is configured to drive the other one of an intake valve and an exhaust valve, a camshaft drive system that is mounted at an end portion of the first camshaft in an axial direction thereof and is configured to drive the first camshaft, and a driving power transmission mechanism that is disposed at a center portion of the first and second camshafts in the axial direction to transmit a driving power from the first camshaft to the second camshaft.