|국가/구분||United States(US) Patent 등록|
|§371/§102 date||20090427 (20090427)|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 1 인용 특허 : 8|
Provided are a variable geometry turbocharger in which a drain pipe from a hydraulic servo drive device can be omitted and in which a member for transmitting power of the hydraulic servo drive device can be efficiently lubricated, and a method of returning oil from the hydraulic servo drive device. The variable geometry turbocharger includes a slide mechanism for changing an opening degree of a nozzle, the hydraulic servo drive device for driving the slide mechanism by hydraulic pressure, and drain flow paths for delivering oil exhausted from the hydraul...
1. A variable geometry turbocharger, comprising: an opening degree changer that changes an opening degree of a nozzle;a hydraulic drive device that drives the opening degree changer by hydraulic pressure; anda drain flow path that delivers oil exhausted from the hydraulic drive device into a turbocharger body. 2. The variable geometry turbocharger according to claim 1, wherein: the opening degree changer includes a driveshaft driven by the hydraulic drive device, andthe drain flow path is provided in the driveshaft. 3. The variable geometry turbocharger ...