| 摘要 |
<p>A Delivery pump unit (2) for a common rail pump assembly comprises a housing (4, 6), an inner rotor (8) having outwardly extending lobes (28) and an outer rotor (10) having a central cutout (30) with inwardly extending protrusions (32) meshable with the lobes (28) of the inner rotor (8). The outer rotor (10) is rotatably supported in a first bearing (16), which encloses the outer rotor (10) and is arranged in the housing (4, 6). The housing (4, 6) comprises a second bearing (12) eccentric to the first bearing (16), the inner rotor (8) is rotatably supported in the second bearing (12) and the delivery pump unit comprises a separate coupling device (18), which has a hub (20) for receiving a shaft (21) and which is engageable with at least one correspondingly shaped recess (26) of the inner rotor (8). Bending effects on a shaft from a high pressure pump driving the delivery pump does not lead to defects of the delivery pump components.</p> |
