# US 8,464,692 B2 · Device for supplying an internal combustion engine with fuel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,464,692 B2 - Document ID: US8464692B2 - Status: Granted - Kind: B2 - Application number: 13/060,192 - Filed: 2009-07-06 - Published: 2011-08-11 - Granted: 2013-06-18 - Earliest claimed: 2008-08-20 - Assignees: Robert Bosch GmbH - Applicants: Friedrich Boecking - Inventors: Friedrich Boecking - Web page: https://patentgrep.com/patent/US8464692B2 ## CPC - F02M 69/52: Arrangement of fuel metering devices {(F02M69/18 takes precedence)} - F02M 59/34: by throttling of passages to pumping elements or of overflow passages {, e.g. throttling by means of a pressure-controlled sliding valve having liquid stop or abutment} - F02M 63/0015: {electrical, e.g. using solenoid} - F02M 63/0017: {using electromagnetic operating means} - F02M 63/004: {Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing} - F02M 63/0042: {combined with valve seats of the lift valve type} - F02M 63/0047: {Four-way valves or valves with more than four ways} - F02M 63/0049: {Combined valve units, e.g. for controlling pumping chamber and injection valve} - F02M 63/0061: {Single actuator acting on two or more valve bodies} - F02M 63/025: {from the common rail} - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF ## Abstract The invention relates to a device for supplying an internal combustion engine with fuel, having a fuel reservoir and a high-pressure pump, which are connected through a suction line, a metering valve which effects a change of the passage cross-section of the suction line, a rail for receiving high-pressure fuel, and a pressure control valve for controlling the pressure in the rail. The metering valve and the pressure control valve are combined in a common housing and have opposite opening directions. The metering valve and the pressure control valve have closing members which are rigidly connected to each other and are movable on a coincident movement axis. ## Claims ### Claim 1 A device for supplying an internal combustion engine with fuel, including: a fuel reservoir and a high-pressure pump, which communicate through an intake line; a metering valve, which effects a change in a flow cross section of the intake line; a rail for receiving fuel subjected to high pressure; and a pressure regulating valve for regulating the pressure in the rail, wherein the metering valve and the pressure regulating valve are united in one common housing and have opposite opening directions, and the metering valve and the pressure regulating valve have closing members, which are rigidly connected to one another and are displaceable along a coinciding movement axis. ### Claim 2 (depends on 1) The device as defined by claim 1, wherein only one of the closing members can be applied against a valve seat, and the other is designed as a stopless slide. ### Claim 3 (depends on 2) The device as defined by claim 2, wherein closing member that can be pressed against the valve seat is a ball. ### Claim 4 (depends on 2) The device as defined by claim 2, wherein the slide is formed by a longitudinally displaceable piston received in a conduit of the housing, the housing is penetrated transversely within the length of the piston by a transverse bore, and the piston is slidable by a control edge sealingly upstream of the outlet openings, toward the conduit, of the transverse bore. ### Claim 5 (depends on 4) The device as defined by claim 4, wherein the control edge defines a radially outward-opening annular groove of the piston and surrounds the piston entirely with a circular-annular face. ### Claim 6 (depends on 4) The device as defined by claim 4, wherein the control edge defines a first circular-annular face of the piston radially on the outside, which circular-annular face is disposed between a first axial region of the piston of a greater cross section and a second axial region of a graduatedly reduced cross section, the conduit has two axial regions, which in terms of the graduation of the cross sections are adapted to the shape of the piston and are separated by a second circular-annular face, and the recess is formed by an annular chamber between the piston and the conduit, which annular chamber results when circular-annular faces of the piston and of the conduit have a spacing from one another in a longitudinal direction. ### Claim 7 (depends on 5) The device as defined by claim 5, wherein for forming the recess, the piston is surrounded by an annular groove and/or is transversely penetrated by a supplementary bore that can be made to coincide with the transverse bore. ### Claim 8 (depends on 1) The device as defined by claim 1, wherein the closing members are rigidly connected by a thrust rod. ### Claim 9 (depends on 2) The device as defined by claim 2 wherein the closing members are rigidly connected by a thrust rod. ### Claim 10 (depends on 3) The device as defined by claim 3, wherein the closing members are rigidly connected by a thrust rod. ### Claim 11 (depends on 4) The device as defined by claim 4, wherein the closing members are rigidly connected by a thrust rod. ### Claim 12 (depends on 5) The device as defined by claim 5, wherein the closing members are rigidly connected by a thrust rod. ### Claim 13 (depends on 6) The device as defined by claim 6, wherein the closing members are rigidly connected by a thrust rod. ### Claim 14 (depends on 7) The device as defined by claim 7, wherein the closing members are rigidly connected by a thrust rod. ### Claim 15 (depends on 5) The device as defined by claim 5, wherein the thrust rod surrounds a magnet coil and has an armature, which is disposed in the magnetic field of the magnet coil. ### Claim 16 (depends on 6) The device as defined by claim 6, wherein the thrust rod surrounds a magnet coil and has an armature, which is disposed in the magnetic field of the magnet coil. ### Claim 17 (depends on 7) The device as defined by claim 7, wherein the thrust rod surrounds a magnet coil and has an armature, which is disposed in the magnetic field of the magnet coil. ### Claim 18 (depends on 15) The device as defined by claim 15, wherein the magnet coil is operative counter to the force of a compression spring that engages the slide and/or the thrust rod. ### Claim 19 (depends on 16) The device as defined by claim 16, wherein the magnet coil is operative counter to the force of a compression spring that engages the slide and/or the thrust rod. ### Claim 20 (depends on 17) The device as defined by claim 17, wherein the magnet coil is operative counter to the force of a compression spring that engages the slide and/or the thrust rod.