Abstract: A sliding camshaft and a method of manufacturing a lobe pack for a sliding camshaft are provided. The lobe pack is formed from a steel alloy having a carbon content in the range of 0.48-0.53 wt %. The lobe pack is heated to a predetermined austenitizing temperature that is below a carburizing temperature of the steel alloy for a time period at least long enough to heat the entire lobe pack to the predetermined austenitizing temperature. The lobe pack is quenched to a martempering temperature that is greater than a martensite start temperature and within 50 degrees Celsius of the martensite start temperature. The lobe pack is held at the martempering temperature for a martempering time period that is long enough to cool the entire lobe pack to the martempering temperature. The lobe pack may have a hardness in the range of 56 to 60 HRC throughout the lobe pack.

Abstract: An engine assembly may include an engine structure, a camshaft, a timing wheel and a camshaft position sensor. The camshaft may be rotationally supported within the engine structure and may have a non-magnetic journal rotationally fixed thereto. The timing wheel may be rotationally fixed to the camshaft proximate the non-magnetic journal. The camshaft position sensor may be coupled to the engine structure and configured to determine the rotational position of the camshaft based on a magnetic impulse from the timing wheel.

Abstract: An engine assembly may include an engine structure, a camshaft, a timing wheel and a camshaft position sensor. The camshaft may be rotationally supported within the engine structure and may have a non-magnetic journal rotationally fixed thereto. The timing wheel may be rotationally fixed to the camshaft proximate the non-magnetic journal. The camshaft position sensor may be coupled to the engine structure and configured to determine the rotational position of the camshaft based on a magnetic impulse from the timing wheel.