Patent ID: 8413622
Filing Date: 2013-04-09
Classification: F01L,F01M

Abstract:
1. An oil supply device of an engine, comprising: lash adjustors respectively provided at valve drive portions located on an intake side and an exhaust side of a cylinder; a first extending oil passage supplying operational oil to one of said lash adjustors; a second extending oil passage supplying operational oil to the other of said lash adjustors; a first connection oil passage interconnecting respective one end portions of said first and second extending oil passages; a variable valve-drive mechanism selecting valve characteristics by using the operational oil supplied through said one of the lash adjustors; an oil-pressure control valve provided at the other end portion of said first extending oil passage and selecting a first state in which the first extending oil passage does not connect to a drain oil passage or a second state in which the first extending oil passage connects to the drain oil passage; and an orifice provided in an oil passage which is located on the side of said first connection oil passage relative to a supply portion of the operational oil supplied to the one of said lash adjustors provided on the side of the one end portion of said first extending oil passage and located on the side of said first connection oil passage relative to another supply portion of the operational oil supplied to the other of said lash adjustors provided on the side of the one end portion of said second extending oil passage.