Patent ID: 9080468
Filing Date: 2015-07-14
Classification: F01L,F01M

Abstract:
1. A cam housing structure for a three-dimensional cam, comprising: a cam housing supporting an intake side camshaft and an exhaust side camshaft; plural intake side supporting parts of the cam housing rotatably supporting the intake side camshaft from above; plural exhaust side supporting parts of the cam housing rotatably supporting the exhaust side camshaft from above at an upper part of a cylinder head; bearing parts rotatably supporting a fork shaft having cam forks sliding and driving three-dimensional cams along the intake side camshaft at upward of the intake side supporting parts, an intake side cam housing mutually and integrally coupling the plural intake side supporting parts; an opening part formed at the intake side cam housing in a sliding range of the cam forks; and a driving mechanism driving the fork shaft and attached to the intake side supporting parts of the intake side cam housing at an opposite position of the fork shaft and sandwiching the intake side camshaft in plan view, wherein any one of the supporting parts of the intake side supporting parts or the exhaust side supporting parts is coupled to two or more pieces of the other supporting parts, of at least one of the exhaust side supporting parts and the intake side supporting parts respectively, via reinforcing members.