Variable camshaft timing system for an internal combustion engine

A system (1), comprising

• a first camshaft (2) coupled to a first gearwheel (4) at a first end of the first camshaft (2a) via a camshaft adjuster (6), the camshaft adjuster (6) allowing the camshaft to be rotated with respect to the gearwheel (4);
• and
• a second camshaft (3) fixedly coupled to a second gearwheel (5) at a first end of the second camshaft (3a), the first and second gearwheels being coupled to a crankshaft via a belt or a chain, wherein the camshaft adjuster (6) is fixed to the first camshaft (2c) by a first screw, the second gearwheel (5) is fixed to the second camshaft (3c) by a second screw, and said first screw and said second screw are arranged, as assembled, at substantially the same depth as viewed perpendicular to their axes and wherein the second gearwheel (5) has at one end a gearwheel basic body (5a) having teeth and has a disk-shaped body (5b) at an opposite end of said gearwheel basic body (5a), a spacer piece (5c) being provided between the gearwheel basic body (5a) and the disk-shaped body (5b), by which the axial length of said spacer piece the axial position of the second fastener (8) can be set in the assembled state.

A system (1) having a first camshaft (2) coupled to a first gearwheel (4) at a first end of the first camshaft (2a) via a camshaft adjuster (6), the camshaft adjuster (6) allowing the camshaft to be rotated with respect to the gearwheel (4) and a second camshaft (3) fixedly coupled to a second gearwheel (5) at a first end of the second camshaft (3a), the first and second gearwheels being coupled to a crankshaft via a belt or a chain, wherein the second gearwheel (5) comprises:

• a basic body (5a) having teeth, a disk-shaped body (5b), and a spacer piece (5c) located between said basic body (5a) and said disk-shaped body;
• the camshaft adjuster (6) is fixed to the first camshaft (2c) by a first fastener (7), the second gearwheel (5) is fixed to the second camshaft (3c) by a second fastener (8), and said first fastener (7) and said second fastener (8) are arranged, as assembled, at substantially the same depth.