Title:
予圧制御装置を有する圧力制御弁を備える可変容量形潤滑油ポンプ
Document Type and Number:
Japanese Patent JP5762573
Kind Code:
B2
Abstract:
A lubricant pump for pumping a pressurized lubricant to an engine includes a shiftable control ring, a pump rotor, a pump outlet port, a pressure control system and a preload control arrangement. The pressure control system comprises a first pressure control chamber, a first pressure conduit connecting the pump outlet port with the first pressure control chamber, and a pressure control valve. The pressure control valve comprises an outlet port, a control valve cylinder wall comprising a control port connected with the outlet port, a control plunger which opens and closes the control port, an input pressure plunger connected with the control plunger, and a control spring preloading the control plunger into a closed position. The preload control arrangement comprises a preload cylinder, a preload plunger in the preload cylinder supporting a basis of the control spring, a preload cylinder inlet, and a preload control valve controlling a lubricant pressure.
Inventors:
Carimine Cuneo
Application Number:
JP2013554797A
Publication Date:
August 12, 2015
Filing Date:
February 21, 2011
Export Citation:
Assignee:
Pierburg Pump Technology GmbH
International Classes:
F04C2/344; F04C14/22; F04C14/24
Domestic Patent References:
| JP56143384A | ||||
| JP60078143A | ||||
| JP10067332A |
Foreign References:
| US2740256 | ||||
| WO2010146087A2 | ||||
| WO2005026553A1 | ||||
| US4292805 |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Takuya Kuno
Takuya Kuno