Internal combustion engine with variable valve mechanism

Details Internal combustion engine with variable valve mechanism Internal combustion engine with variable valve mechanism

2011-08-30

2011-08-30

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090390, C123S090150

Reexamination Certificate

active

08006659

ABSTRACT:
An internal combustion engine including a variable valve mechanism that can avoid an unnecessary friction increase while preventing a hydraulic lash adjuster from pumping up. When a first engine speed is a critical rotation speed at which the inertia force of the variable valve mechanism exceeds the maximum load on a lost motion spring and a second engine speed is a critical rotation speed at which the inertia force of a valve and rocker arm exceeds the maximum load on a valve spring, the maximum loads are set such that the first engine speed is lower than the second engine speed.

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patent: 2006 283700 (2006-10-01), None
patent: 2006 307786 (2006-11-01), None

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