ディーゼル燃料弁のニードルバルブのリフト計測法

Abstract

This paper describes the new detecting methods of needle valve lift behavior in diesel fuel injector. Authors detected the needle valve lift behavior by using two types of sensors which are the strain gauge type sensor and the piezo-electric sensor in order to verify the fuel injection characteristic for medium speed diesel engine. It was found that these sensors had enough quick response concerning to both opening and closing timing of the needle valve without modification of fuel injector's structure.