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1. (WO2014206768) HIGH-PRESSURE PUMP AND FUEL INJECTION SYSTEM HAVING A HIGH-PRESSURE PUMP

Pub. No.:    WO/2014/206768    International Application No.:    PCT/EP2014/062340
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Sat Jun 14 01:59:59 CEST 2014
IPC: F02M 59/10
F02M 59/06
F02M 59/36
F02D 41/38
F02M 63/02
F02D 41/00
F02D 41/12
Applicants: ROBERT BOSCH GMBH
Inventors: LAMM, Marco
Title: HIGH-PRESSURE PUMP AND FUEL INJECTION SYSTEM HAVING A HIGH-PRESSURE PUMP
Abstract:
A high-pressure pump (2), which is used in particular as a radial or in-line piston pump for fuel injection systems of air-compressing, auto-ignition internal combustion engines (3), comprises a first pump assembly (8), a second pump assembly (9), and a drive shaft (6), which is used to drive the first pump assembly (8) and the second pump assembly (9). Furthermore, a first inlet valve (10) for a pump working chamber (11) of the first pump assembly (8) and at least one second inlet valve (14) for a pump working chamber (15) of the second pump assembly (9) are provided. The first inlet valve (10) is designed as a controlled inlet valve (10), wherein fuel pumping by the first pump assembly (8) can be at least substantially interrupted by the first inlet valve (10) in a partial-load operating mode. The invention further relates to a fuel injection system (1) having such a high-pressure pump (2).