Patent · US Active

Pump device for building up pressure in a fuel tank

US10267268B2 · kind B2 · utility

0Cited by

6References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Marko Lorenz · Bornsteiner Straße, DE
Andreas Posselt · Rochlitz, DE
Andreas Gutscher · Markgröningen, DE

Key dates

Filing date	Nov 27, 2017
Grant date	Apr 23, 2019
Priority date	—
Expiry date	Nov 27, 2037

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60K2015/03256
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A pump device includes an electrical delivery pump, a first port for an air filter, a second port for a fuel tank, a valve opening, a connecting line, a bypass line, and an electrical switching valve. The connecting line connects the ports via the valve opening, which has a valve seat formed at the opening, a valve body receptacle, and a valve body configured to interact with the seat and adjustable in a direction of the seat by a delivery flow of the delivery pump. The bypass line branches off from the connecting line upstream of the opening, and has a throttled bypass outlet opening into the connecting line downstream of the opening. The switching valve has an electrical actuator, for example a magnet coil, operable to move the body. Such a pump device requires less structural space and reduced production costs relative to conventional pump devices.

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