Invention Grant
- Patent Title: Fuel-pumping device for an internal combustion engine, and a method for pumping fuel in a fuel-pumping device
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Application No.: US16320571Application Date: 2017-06-21
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Publication No.: US10662915B2Publication Date: 2020-05-26
- Inventor: Martin Bernhaupt
- Applicant: Robert Bosch GmbH
- Applicant Address: DE Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Michael Best & Friedrich LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@1c158f4c
- International Application: PCT/EP2017/065170 WO 20170621
- International Announcement: WO2018/019479 WO 20180201
- Main IPC: F02M63/00
- IPC: F02M63/00 ; F02M63/02 ; F02D41/38 ; F02D19/10 ; F02D41/00 ; F02B7/06

Abstract:
The invention relates to a fuel-pumping device (1) for a fuel injection device of an internal combustion engine with a large high-pressure pump (16) and a small high-pressure pump (14) arranged in parallel, wherein fuel can be pumped by the large high-pressure pump (16) and by the small high-pressure pump (14) from a low-pressure region (13) into a high-pressure region (18). The high-pressure region (18) is connected to at least one injector (21). A control device (30) is provided, which can be used to conduct the entire pump output of the large high-pressure pump (16) or the small high-pressure pump (14) into the low-pressure region (13) via a discharge line (15).
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