# US 10,871,159 B2 · Valve device and high pressure pump using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,871,159 B2 - Document ID: US10871159B2 - Status: Granted - Kind: B2 - Application number: 15/919,032 - Filed: 2018-03-12 - Published: 2018-07-19 - Granted: 2020-12-22 - Earliest claimed: 2011-05-12 - Assignees: Denso Corporation - Applicants: Denso Corporation - Inventors: Masatoshi Kuroyanagi; Hiroshi Inoue; Shinichiro Koshimoto - Web page: https://patentgrep.com/patent/US10871159B2 ## CPC - F04B 53/1087: {Valve seats} - F02M 59/02: of reciprocating-piston {or reciprocating-cylinder} type - F02M 59/368: {Pump inlet valves being closed when actuated} - F02M 59/46: Valves - F02M 59/466: {Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means} - F02M 63/0035: {Poppet valves, i.e. having a mushroom-shaped valve member that moves perpendicularly to the plane of the valve seat} - F02M 63/0075: {Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring} - F02M 63/0077: {Valve seat details} - F02M 63/0078: {Valve member details, e.g. special shape, hollow or fuel passages in the valve member} - F04B 19/22: of reciprocating-piston type - F04B 53/14: Pistons, piston-rods or piston-rod connections - F04B 53/16: Casings; Cylinders; Cylinder liners or heads; Fluid connections - F16K 1/32: Details (details of more general applicability F16K25/00 - F16K51/00) - F16K 1/42: Valve seats (for double-seat valves F16K1/44) - F16K 1/50: Preventing rotation of valve members - F16K 1/54: Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve - F16K 31/0655: {Lift valves} - F16K 31/44: Mechanical actuating means - F04B 7/0076: {the members being actuated by electro-magnetic means} - F04B 53/103: {Flat-annular type disc valves} - F04B 53/1032: {Spring-actuated disc valves (F04B53/1022, F04B53/103 take precedence)} - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} ## Abstract A valve seat has an inner passage and outer passages. A suction valve member has first passages and a first projection portion that guides, to the first passages, the fuel that flows from a pressure chamber at the time of valve opening. Therefore, an action force by the dynamic pressure applied to the suction valve member in the valve closing direction is reduced. An action force by the pressure of fuel that flows into pressure equalization grooves counterbalances the action force by the dynamic pressure of the suction valve member. Therefore, self-closing by the dynamic pressure can be inhibited, and the maximum output of an electromagnetic driving unit can be reduced. Fuel flows through a passage radially outside the suction valve member and the first passages. A fluid passage area is securable even when a lift amount of the suction valve member is small. ## Claims ### Claim 1 A high pressure pump, comprising: a plunger; a cylinder having a bottomed cylindrical shape, supporting the plunger reciprocally in an axial direction and having a pressurization chamber whose volumetric capacity changes when the plunger moves; a suction chamber from which fuel is to be introduced into the pressurization chamber; and a fuel suction portion having a valve device, the fuel suction portion configured to: open a valve member when the plunger moves downward to supply fuel from the suction chamber to the pressurization chamber, continue to open the valve member to return a part of the fuel, which is introduced into the pressurization chamber, to the suction chamber, and close the valve member when the plunger starts moving upward or is during upward movement to pressure the fuel in the pressurization chamber, wherein the valve device includes: a valve body; a valve seat having an inner passage located inward in a radial direction of the valve body and extending along a center axis of the valve body and an outer passage located outward in a radial direction of the valve body; the valve member having a first passage that is provided to be able to abut against and move away from the valve seat and that is located between the inner passage and the outer passage in a radial direction; and a driving unit that is able to inhibit movement of the valve member toward the valve seat, wherein: the driving unit includes a needle that is a separate member from the valve member and is configured to abut against the valve member, the valve member is provided with a first annular seal portion that seals between the inner passage and the first passage at a time of abutment on the valve seat, a second annular seal portion that seals between the first passage and the outer passage, and a third seal portion that seals between the outer passage and a radially outside passage located radially outside the valve member, and the valve member has a chamfer on a side facing away from the third seal portion. ### Claim 2 (depends on 1) The high pressure pump according to claim 1, wherein: a plurality of first passages, including at least the first passage, are provided in a circumferential direction. ### Claim 3 (depends on 1) The high pressure pump according to claim 1, wherein: the valve member forms a plurality of projection portions projecting radially outward to narrow the radially outside passage; and the projection portions function as a guide portion. ### Claim 4 (depends on 1) The high pressure pump according to claim 1, further comprising: a stopper that is located oppositely to the valve seat relative to the valve member, forms an inner abutment portion to be able to abut against a radially inner portion of the valve member and an outer abutment portion to be able to abut against a radially outer portion of the valve member, and inhibits movement of the valve member oppositely to the valve seat. ### Claim 5 (depends on 4) The high pressure pump according to claim 4, wherein: the stopper has a second passage penetrating radially between the inner abutment portion and the outer abutment portion. ### Claim 6 (depends on 1) The high pressure pump according to claim 1, wherein: the valve member forms a first projection portion projecting oppositely to the valve seat relative to the first passage in a radially outer direction; and the first projection portion functions as a guide portion. ### Claim 7 (depends on 6) The high pressure pump according to claim 6, wherein a portion of a radially inner wall of the first projection portion to the valve seat is proximate to the first passage in a direction toward the valve seat. ### Claim 8 (depends on 1) The high pressure pump according to claim 1, further comprising: a cover member that is located oppositely to the valve seat relative to the valve member, has a third passage penetrating axially, and forms a second projection portion projecting radially outward of the first passage toward the valve member, wherein the second projection portion functions as a guide portion. ### Claim 9 (depends on 8) The high pressure pump according to claim 8, wherein: the second projection portion functions as an inhibition portion to inhibit movement of the valve member. ### Claim 10 (depends on 8) The high pressure pump according to claim 8, wherein a top of the second projection portion is located radially inward of the outer passage. ### Claim 11 (depends on 8) The high pressure pump according to claim 8, further comprising: a spring that is located between the cover member and the valve member, provided to encircle the first passage and the third passage, and biases the valve member toward the valve seat, wherein the spring functions as the guide portion. ### Claim 12 (depends on 1) The high pressure pump according to claim 1, further comprising: a cover member that is located oppositely to the valve seat relative to the valve member and has a third passage penetrating axially; and a spring that is located between the cover member and the valve member, provided to encircle the first passage and the third passage, and biases the valve member toward the valve seat, wherein: the spring functions as a guide portion. ### Claim 13 (depends on 1) The high pressure pump according to claim 1, wherein one or both of a first wall of the valve member and a second wall of the valve seat that face one another have an annular first pressure equalization groove communicating with the first passage and encircling the inner passage, and one or both of the first wall and the second wall have an annular second pressure equalization groove communicating with the outer passage and encircling the first pressure equalization groove and the first passage. ### Claim 14 (depends on 1) The high pressure pump according to claim 1, further comprising: a guide member that permits axial movement of the valve member and inhibits radial movement of the valve member. ### Claim 15 (depends on 1) The high pressure pump according to claim 1, wherein: the valve member is formed of a plurality of members laminated with each other. ### Claim 16 (depends on 1) The high pressure pump according to claim 1, wherein the valve seat is formed of a plurality of members laminated with each other. ### Claim 17 (depends on 1) The high pressure pump according to claim 1, wherein: the needle is inside the inner passage and is coaxial with the inner passage. ### Claim 18 (depends on 17) The high pressure pump according to claim 17, wherein: the inner passage overlaps with the center axis of the valve body. ### Claim 19 (depends on 1) The high pressure pump according to claim 1, wherein: the outer passage is located between the chamfer of the valve member and the valve body in the radial direction. ### Claim 20 (depends on 1) The high pressure pump according to claim 1, wherein the valve device includes: a stopper including a stopper portion extending toward the valve member and configured to abut against the valve member; and a spring configured to bias the valve member, wherein the stopper has a second passage, and the stopper portion and the spring are located radially inside of the first passage and the second passage. ### Claim 21 A valve device, comprising: a valve body; a valve seat having an inner passage located inward in a radial direction of the valve body and extending along a center axis of the valve body and an outer passage located outward in a radial direction of the valve body; a valve member having a first passage that is provided to be able to abut against and move away from the valve seat and that is located between the inner passage and the outer passage in a radial direction; a stopper that is located oppositely to the valve seat relative to the valve member, the stopper forms an inner abutment portion configured to abut against a radially inner portion of the valve member and an outer abutment portion configured to abut against a radially outer portion of the valve member, and the stopper configured to inhibit movement of the valve member oppositely to the valve seat; a spring that is placed radially inward of the inner abutment portion of the stopper to bias the valve member toward the valve seat; and a driving unit configured to inhibit movement of the valve member toward the valve seat, wherein: the valve member is provided with a first annular seal portion that seals between the inner passage and the first passage at a time of abutment on the valve seat, a second annular seal portion that seals between the first passage and the outer passage, and a third seal portion that seals between the outer passage and a radially outside passage located radially outside the valve member, and the valve member has a chamfer on a side facing away from the third seal portion. ### Claim 22 A valve device, comprising: a valve body; a valve seat having an inner passage located inward in a radial direction of the valve body and extending along a center axis of the valve body and an outer passage located outward in a radial direction of the valve body; a valve member having a first passage that is provided to be able to abut against and move away from the valve seat and that is located between the inner passage and the outer passage in a radial direction; and a driving unit that is able to inhibit movement of the valve member toward the valve seat, wherein: the valve member is provided with a first annular seal portion that seals between the inner passage and the first passage at a time of abutment on the valve seat, a second annular seal portion that seals between the first passage and the outer passage, and a third seal portion that seals between the outer passage and a radially outside passage located radially outside the valve member, the valve member has a chamfer on a side facing away from the third seal portion, one or both of a first wall of the valve member and a second wall of the valve seat that face one another have an annular first pressure equalization groove communicating with the first passage and encircling the inner passage, one or both of the first wall and the second wall have an annular second pressure equalization groove communicating with the outer passage and encircling the first pressure equalization groove and the first passage, and the valve member has the first pressure equalization groove and the second pressure equalization groove.