发明名称 |
INTERNAL COMBUSTION ENGINE FUEL, PREFERABLY DIESEL FUEL, FEED PUMP ASSEMBLY |
摘要 |
Internal combustion engine fuel, preferably diesel fuel, feed pump assembly, the pump assembly (1) comprising a pump body (2); at least one cylinder (6) formed in the pump body (2) and extending along an axis (A2); a seat (12) formed in the pump body (2), at one end of the cylinder (6); an intake valve (18) for selectively controlling fuel feed into the cylinder (6), which is housed inside the seat (12) and in turn comprises a valve body (25); and an annular seal (26) extending around the axis (A2) and fitted inside the seat (12) between the valve body (25) and the pump body (2); the pump assembly (1) being characterized in that the valve body (25) is positioned contacting the annular seal (26) along a contact surface (45) of the valve body (25) and close to a surface portion adjacent to a radially inner peripheral edge (46) of the seal (26); the valve body (25) having an annular step (48) along another surface portion adjacent to a radially outer peripheral edge (52) of the seal (26). |
申请公布号 |
US2016146170(A1) |
申请公布日期 |
2016.05.26 |
申请号 |
US201414903865 |
申请日期 |
2014.07.08 |
申请人 |
ROBERT BOSCH GMBH |
发明人 |
Tavani Manuel;Guarino Rocco;Damiani Fabio |
分类号 |
F02M59/46;F02M59/10;F04B53/16;F04B19/22;F04B53/10;F04B53/14;F02M59/44;F02M59/04 |
主分类号 |
F02M59/46 |
代理机构 |
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代理人 |
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主权项 |
1. An internal combustion engine fuel, feed pump assembly, the pump assembly (1) comprising a pump body (2); at least one cylinder (6) formed in the pump body (2) and extending along an axis (A2); a seat (12) formed in the pump body (2), at one end of the cylinder (6); an intake valve (18) for selectively controlling fuel feed into the cylinder (6), wherein the intake valve is housed inside the seat (12) and in turn comprises a valve body (25); and an annular seal (26) extending around the axis (A2) and fitted inside the seat (12) between the valve body (25) and the pump body (2); the pump assembly (1) being characterized in that the valve body (25) is positioned contacting the annular seal (26) along a contact surface (45) of the valve body (25) and close to a surface portion adjacent to a radially inner peripheral edge (46) of the seal (26); the valve body (25) having an annular step (48) along another surface portion adjacent to a radially outer peripheral edge (52) of the seal (26). |
地址 |
Stuttgart DE |