Variable valve train system for internal combustion engine
AssigneeMitsubishi Jidosha Kogyo Kabushiki Kaisha
InventorsMikio Tanabe, Daisuke Yoshika
Life of this patent
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Abstract
A variable valve train system for an internal combustion engine wherein the engagement section of a transmission mechanism is lubricated by means of an existing part for driving a variable valve actuation mechanism. Gears forming the engagement section of the transmission mechanism are arranged at a position where the engagement section is lubricated with a lubricant scattered from an endless elongate member for driving a camshaft. The transmission mechanism can therefore be lubricated without the need for additional use of a lubricant passage and its associated elements, besides the existing parts for driving the variable valve actuation mechanism.
Claims8
A variable valve train system for an internal combustion engine, comprising:
- a camshaft driven by an endless elongate member traveling while scattering a lubricant;
- a variable valve actuation mechanism for outputting a valve driving output based on cam displacement of the camshaft, the variable valve actuation mechanism variably controlling the valve driving output in accordance with displacement input to a control input member;
- and
- a transmission mechanism for transmitting driving power output from a driving power source to the control input member through an engagement section thereof,
- wherein the engagement section of the transmission mechanism is arranged at a position closer to a body of the engine than the endless elongate member, such that the engagement section directly receives the lubricant scattered from the endless elongate member.
Dependencies are inferred from the claim text.