Patent · US Active

Pump, in particular a high-pressure fuel pump

US10125749B2 · kind B2 · utility

1Cited by

14References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Otto Mueller · Dearborn, US
Georg Woesten · Schwieberdingen, DE
Juergen Schneck · Kornwestheim, DE

Key dates

Filing date	Oct 27, 2015
Grant date	Nov 13, 2018
Priority date	—
Expiry date	Oct 27, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B49/243
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A pump has at least one pump element that comprises a pump piston that is driven in a reciprocating movement by a drive shaft having at least one cam and that defines a pump working chamber which, during the suction stroke of the pump piston is selectively filled with pumped medium via an inlet valve. The at least one cam is a multiple cam having multiple cam delivery areas for the delivery strokes of the pump piston. The inlet valve is configured to be electrically actuated. The inlet valve is closed when the pump piston is situated in the cam delivery area to be used for the delivery. The inlet valve is opened when the pump piston is situated in a cam delivery area that is not to be used for the delivery. Cam profiles of the cam delivery areas of at least one multiple cam are of different design.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.