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AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsShizuo Yagi, Youichi Ishibashi, Hiroshi Sono
Estimating the term…
A valve train for a four-cycle, double overhead camshaft type internal combustion engine includes apparatus for movably supporting the camshafts that mount the cams which operate the intake and exhaust valves respectively so that the camshafts and cams are displaceable with respect to the rocker arms through which the operation of the cams is imparted to the valves. A control system is described that enables the camshaft supporting apparatus to be selectively displaced in response to engine operating conditions, such as rotational speed, so that valve timing and valve lift for the respective valves can be independently varied to produce optimal engine operating characteristics over a wide range of engine operating conditions. A method of operating engine valves in accordance with utilization of the described control system is also disclosed.
An internal combustion engine having a cylinder, intake and exhaust valves operative in said cylinder, pivotably mounted rocker arms operatively engaging each of said valves, respectively, a cam mounted on a first camshaft and engaging a said rocker arm for operating said intake valve and a cam mounted on a second camshaft and engaging a said rocker arm for operating said exhaust valve, and means for controllably varying the phase angle of said cams and the extent of valve lift imparted thereby, comprising:
In an internal combustion engine having a cylinder, an intake valve and an exhaust valve operative in said cylinder, independently mounted camshafts bearing cams for operating each of said intake and exhaust valves respectively, a method for operating said valves comprising the steps of:
Dependencies are inferred from the claim text.