Title:
【発明の名称】液圧式ポンプユニット
Document Type and Number:
Japanese Patent JP2002538360
Kind Code:
A
Abstract:
The invention relates to a hydraulic pump unit having a plurality of pump elements, disposed in one plane, each of which has one pump cylinder and one pump piston longitudinally displaceable in the pump cylinder, and whose longitudinal axes intersect at a common intersection point, and having a cam drive with cams, which upon a rotation of the cam drive relative to the pump elements act upon the pump pistons with an actuating motion. To enable a uniform pumping of the hydraulic fluid and to make a high degree of smoothness of the hydraulic pump unit possible, it is proposed that the number and the angular spacing of the cams is adapted to the number and angular spacing of the pump elements in such a way that when a certain number of pump pistons are located at top dead center, the same number of pump pistons are at bottom dead center.
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| JP2001020832 | PLUNGER FUEL PUMP |
| WO/2003/023232 | HYBRID DEMAND CONTROL FOR HYDRAULIC PUMP |
Inventors:
Andreas Kellner
Application Number:
JP2000601334A
Publication Date:
November 12, 2002
Filing Date:
November 23, 1999
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F02M59/06; F02M59/10; F02M63/02; F04B1/04; F04B1/053; F04B11/00; (IPC1-7): F02M59/10; F02M59/06; F04B1/04; F04B1/047; F04B1/053; F04B9/04
Domestic Patent References:
| JP2000054933A | 2000-02-22 | |||
| JPH0658219A | 1994-03-01 | |||
| JPS471157A | ||||
| JP356236Z1 | ||||
| JPH10213049A | 1998-08-11 |
Foreign References:
| DE1503356A1 | 1970-01-02 |
Attorney, Agent or Firm:
Toshio Yano (4 outside)