Patent · US Active

Piston fuel pump

US10352284B2 · kind B2 · utility

0Cited by

29References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Michael Kleindl · Schwieberdingen, DE
Tamim Latif · Tokyo, JP
Peter Ropertz · Oberriexingen, DE
Matthias Maess · Eppelheim, DE

Key dates

Filing date	Nov 20, 2017
Grant date	Jul 16, 2019
Priority date	—
Expiry date	Jan 11, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B53/16
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A piston-type fuel pump for an internal combustion engine includes a pump housing, a piston, an annular counterplate, and a non-return outlet valve. The pump housing includes a stepped opening and a piston opening. The piston is guided in the piston opening. The counterplate is pressed into the stepped opening and includes a valve seat. The non-return valve includes a valve element and a guide element. The guide element guides the valve element, is arranged radially outside the valve element and in the stepped opening, and includes a guide section, a retention section, and a support section. The guide section guides the valve element, the retention section is connected to the guide section via a radially extending connecting section, and the support section supports a valve spring. The sections are arranged axially at different points such that the guide section is between the counterplate and the support section.

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