Patent ID: 7536985

Claim:
A valve opening and closing timing control device, comprising; a first phase control unit having a first drive side rotation member rotatable in synchronization with a crankshaft of an internal combustion engine, a first driven side rotation member provided coaxially with the first drive side rotation member and synchronously rotatable with a first camshaft that controls at least one of intake and exhaust valves at a first bank of the internal combustion engine, and a phase control mechanism for controlling a relative rotational phase between the first drive side rotation member and the first driven side rotation member by being supplied with operation fluid; a second phase control unit having a second drive side rotation member rotatable in synchronization with the crankshaft of the internal combustion engine, a second driven side rotation member provided coaxially with the second drive side rotation member and synchronously rotatable with a second camshaft that controls at least one of intake and exhaust valves at a second bank of the internal combustion engine, and a second phase control mechanism for controlling a relative rotational phase between the second drive side rotation member and the second driven side rotation member by being supplied with the operation fluid; a first pump driven by the internal combustion engine for supplying the operation fluid to both the first and second phase control units; and a second pump driven by a motor in such a manner that the second pump supplies the operation fluid inclusively to the first phase control unit without supplying the operation fluid to the second phase control unit while the first pump supplies the operation fluid to both the first and second phase control units.