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A Study on the Automatic Measurement of Swirl Generated fi:om Intake Port of Engine Cylinder Head Using an I-IEEE-1394 Camera and Step Motors  

Lee Choong-Hoon (서울산업대학교 자동차학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.14, no.6, 2005 , pp. 88-94 More about this Journal
Abstract
A swirl ratio of a charge in the cylinder could be calculated by measuring both the rotary speed of paddle and the intake air flow rate in the swirl measurement apparatus fur several positions of valve lift. The automation of the swirl ratio measurement for a cylinder head is achieved by controlling both the valve lift of cylinder head and a suction pressure of the surge tank, instead of controlling them manually. PID control of the surge tank pressure and positioning a valve lift of the cylinder head are also achieved by using two step motors, respectively. Rotating speed of a paddle are measured using an optical sensor and a counter. Flow rate are measured from ISA 1932 flow nozzle by reading a differential pressure gauge position using IEEE-1394 camera. Time to measure the swirl ratio for a port in the cylinder head is drastically reduced from an hour to 3 minutes by automation control of the apparatus.
Keywords
Automation; Intake port; I-EEE1394; PID Control;
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