Engine camshaft cover with integrated oil passages for actuating a camshaft phase controller

摘要

Engine (10), comprising:an engine cylinder head (12);a first and a second camshaft (22, 24) mounted on the engine-cylinder head (12) rotating each on an axis of rotation (26, 28), with the axes of rotation (26, 28) running parallel to each other;A first and a second hydraulically actuated camshaft phase controller assembly (30, 34), which is mounted on the first and second hydraulically actuated camshaft phase controller assembly (30, 34). are mounted on the second camshaft (22, 24);a camshaft cover (14) which covers at least partially the first and second camshafts (22, 24) and the first and second hydraulically operated camshaft phaser assembly (30, 34) and is connected to the cylinder head (12);a first and a second oil control valve (46, 49) mounted on the camshaft cover (14) and used to control the first or second oil control valve (46, 49). control the second camshaft phase controller assembly (30,34);where the camshaft cover (14) defines feed passages (60, 62, 64) in connection with the first and second oil control valves (46, 49) and cylinder head (12), which conducts pressurised fluid for controlling the first and second hydraulically operated camshaft phaser assembly (30,34) from the cylinder head (12) to the first and second oil control valves (46,49),where a first feed passage (64) is connected to the first and second oil control valves (46,49), crosses in the camshaft cover (14) and intersects a second feed passage (60),where the second feed passage (60) with a third feed passage(62) is connected formed in the cylinder head (12); andwherein the connection point between the second feed passage (60) and the third feed passage (62) is located outside the first and the second camshaft (22, 24) on a sidewall of the camshaft cover (14).