公开(公告)号：US07228832B2

公开(公告)日：2007-06-12

申请号：US10806786

申请日：2004-03-23

Applicant: Keith A Novak

Inventor： Keith A Novak

IPC: F01M1/06

CPC classification number: F01L1/047 ,  F01L1/026 ,  F01L13/085 ,  F01L2101/00

Abstract: An internal combustion engine having a camshaft which is translatable between first and second positions to control an engine operating characteristic. The camshaft is rotationally driven from the engine crankshaft, and includes an oil pump member in fluid communication with the oil sump of the engine. During rotation of the camshaft, the oil pump member pumps oil from the oil sump to various lubrication points in the engine, and also generates an oil pressure which acts upon at least a portion of the camshaft. At low engine speeds, the oil pressure is insufficient to translate the camshaft. However, at high engine speeds, the oil pressure is sufficient to translate the camshaft axially during running of the engine, and the camshaft returns to its initial position when the speed of the engine decreases. Translation of the camshaft may facilitate an automatic compression and/or vacuum release feature, a low and high speed cam switching feature, or a low oil shutdown feature, for example.

Abstract translation: 一种具有凸轮轴的内燃机，其可在第一和第二位置之间平移以控制发动机工作特性。 凸轮轴从发动机曲轴旋转驱动，并且包括与发动机的油槽流体连通的油泵部件。 在凸轮轴旋转期间，油泵构件将油从油底壳泵送到发动机中的各种润滑点，并且还产生作用在凸轮轴的至少一部分上的油压。 在低发动机转速下，油压不足以转动凸轮轴。 然而，在高发动机转速下，油压足以在发动机运转期间轴向地平移凸轮轴，并且当发动机的速度降低时，凸轮轴返回到其初始位置。 凸轮轴的翻转可以有助于例如自动压缩和/或真空释放特征，低速和高速凸轮切换特征或低油停机特征。