Patent ID: 8205587

Claim:
An internal combustion engine with a variable valve gear comprising a first intake valve and a second intake valve in each cylinder and a cam phase change mechanism which is disposed on one end portion of an intake camshaft and varies phases of drive cams of the first and second intake valves relative to a crankshaft of the engine, wherein the cam phase change mechanism is formed of a first vane-type hydraulic actuator that varies, the phase of the drive cam of the first intake valve and a second vane-type hydraulic actuator that varies the phase of the drive cam of the second intake valve; the first vane-type hydraulic actuator varies the phase of the drive cam of the first intake valve and a phase of the crankshaft of the engine; the second vane-type hydraulic actuator varies the phase of the drive cam of the second intake valve and the phase of the drive cam of the first intake valve; and variable-phase torques produced at the same supplied oil pressure is larger in the first vane-type hydraulic actuator than in the second vane-type hydraulic actuator.