New Equipment and Methodology to Perform High Speed ValveTrain Dynamics Testing and Analysis
. l+ a1 ?! o; a, QJeff G. Sczepanski, Ford Motor Company, Detroit 汽车论坛|汽车工程|汽车工程技术|汽车工程技术论坛|NVHNVH论坛|汽车技术|汽车先进技术|汽车安全|节能环保|振动噪声|汽车技术|汽车工程师|汽车技术论坛|汽车工程师论坛|汽车工程网|汽车工程网论坛; R5 o, Y) `( q: }+ T
Abstract
3 H. O8 u. G; g5 J1 t中国最专业的汽车工程技术论坛，内容包括NVH技术，汽车安全技术，节能环保技术，汽车测试技术等，海量资料与您分享！With the increased need for variable and high-speed valvetrains for improved performance and economy, greater importance must be placed on valvetrain testing and prove-out. To make an accurate assessment of valvetrain capability and high-speed dynamics, improved test and analysis capability is needed. 中国最专业的汽车工程技术论坛，内容包括NVH技术，汽车安全技术，节能环保技术，汽车测试技术等，海量资料与您分享！) _% O9 O3 e/ A$ E0 }2 X0 F5 G
The objective of this paper is to provide the necessary information for others to understand and perform high-speed valve train dynamics testing using current state-of-the-art equipment. It includes the use of a differential laser vibrometer to measure complete valve lift and velocity and a Rotational Analysis System (RAS) that easily and quickly reduces the data to plots and compares measured valvetrain dynamics to theoretical models. Also covered are valve closing velocity measurements, calculated valve accelerations, torque, torsional vibration, sample rate 汽车论坛|汽车工程|汽车工程技术|汽车工程技术论坛|NVH|NVH论坛|汽车技术|汽车先进技术|汽车安全|节能环保|振动噪声|汽车技术|汽车工程师|汽车技术论坛|汽车工程师论坛|汽车工程网|汽车工程网论坛+ R3 K1 \  M* t% k$ J, P& A/ v" f( b
and filtering. Effects of torsional vibration, sample rate and filtering on measurements are also demonstrated.

写了简介的文章就是好呀，可以决定下不下。) K3 @- l* Q2 q# p7 V4 _
是SAE 2004-01-1720中国汽车工程论坛# t; D. |+ `. k
www.autotech8.com.cn- H1 w$ h2 g# x# {
5个金币有点贵呀。
. R8 }& l' Z1 q( K  s7 Y7 F$ s5 N1 M中国汽车工程论坛汽车论坛|汽车工程|汽车工程技术|汽车工程技术论坛|NVHNVH论坛|汽车技术|汽车先进技术|汽车安全|节能环保|振动噪声|汽车技术|汽车工程师|汽车技术论坛|汽车工程师论坛|汽车工程网|汽车工程网论坛/ r, i8 x! u8 j
[ 本帖最后由 imjacksong 于 2008-3-14 10:08 编辑 ]

犹豫一下，下载了。

有点贵亚！！

好像没有看见东西啊？？