公开(公告)号：US20150345450A1

公开(公告)日：2015-12-03

申请号：US14292860

申请日：2014-05-31

Applicant: CUMMINS INC.

Inventor： Marian Trocki ,  Donald J. Benson ,  Tamas Rauznitz ,  Vijayagandeeban Subbaihannadurai ,  Deepak Sahini

IPC: F02M61/04

CPC classification number: F02M61/042 ,  F02M45/12 ,  F02M61/12 ,  F02M63/0056 ,  F02M2200/28 ,  F02M2200/306

Abstract: An injector has an injector body including an injector cavity defining an inner wall and a longitudinal axis, an injector orifice and a plunger slidably disposed within the injector cavity. The plunger has an outer portion and an inner portion at different locations longitudinally along the plunger. The inner portion has a plurality of surface portions including a guiding portion configured to substantially mate with the inner wall of the injector cavity, guide the plunger to slidably move in a direction along the longitudinal axis and substantially prevent the plunger from laterally translating within the injector cavity. The plurality of surface portions also includes a restriction portion configured to form a restrictive cavity between an exterior surface of the inner portion and the inner wall of the injector cavity axially along a length of the inner portion.

Abstract translation: 注射器具有喷射器主体，其包括限定内壁和纵向轴线的喷射器腔，喷射器孔和可滑动地设置在喷射器腔内的柱塞。 柱塞具有沿着柱塞纵向的不同位置处的外部部分和内部部分。 内部部分具有多个表面部分，其包括构造成与注射器腔体的内壁大致配合的引导部分，引导柱塞沿着纵向轴线方向可滑动地移动，并且基本上防止柱塞在注射器内侧向平移 腔。 所述多个表面部分还包括限制部分，所述限制部分构造成沿着所述内部部分的长度轴向地在所述内部部分的外表面和所述注射器腔体的内壁之间形成限制腔。

公开(公告)号：US09822748B2

公开(公告)日：2017-11-21

申请号：US14292860

申请日：2014-05-31

Applicant: CUMMINS INC.

Inventor： Marian Trocki ,  Donald J. Benson ,  Tamas Rauznitz ,  Vijaygandeeban Subbaihaannadurai ,  Deepak Sahini

IPC: F02M61/12 ,  F02M61/04 ,  F02M45/12 ,  F02M63/00

CPC classification number: F02M61/042 ,  F02M45/12 ,  F02M61/12 ,  F02M63/0056 ,  F02M2200/28 ,  F02M2200/306

Abstract: An injector has an injector body including an injector cavity defining an inner wall and a longitudinal axis, an injector orifice and a plunger slidably disposed within the injector cavity. The plunger has an outer portion and an inner portion at different locations longitudinally along the plunger. The inner portion has a plurality of surface portions including a guiding portion configured to substantially mate with the inner wall of the injector cavity, guide the plunger to slidably move in a direction along the longitudinal axis and substantially prevent the plunger from laterally translating within the injector cavity. The plurality of surface portions also includes a restriction portion configured to form a restrictive cavity between an exterior surface of the inner portion and the inner wall of the injector cavity axially along a length of the inner portion.