Abstract:
본 발명의 목적은 단순한 방법으로 충분한 샤프트 길이를 가지는 다수편 피스톤을 제조하는 것이다. 이것을 달성하기 위하여 하부부분(1)은 다음의 특징들을 가진다: 즉, - 하부부분(1)은 서로 용접되거나 서로 납땜 되어진 2개의 반부들(2,3)로 되어있으며, - 상기 2개의 반부들(2,3) 사이의 분리평면(4)이 압력-반압력 방향으로 지나고 있으며, - 2개의 반부들(2,3)은 압출된 또는 단조된 강으로 되어 있으며, - 핀의 방향에서는 박스 피스톤의 방법으로 샤프트(5)의 직경이 피스톤의 직경에 비하여 감소되어 있다.
Abstract:
2행정크로스헤드엔진용피스톤(1)은피스톤링들에대한다수의링 홈(2-4)들을지닌다. 적어도몇개의링에서, 피스톤은압력경감통로들을지니며, 그축은배출개구부(20)를통한연장부에서피스톤링(14)과충돌을회피한다. 각각의피스톤링과관련된압력경감통로의 mm으로표현된전체횡단면적은 D/68000 내지 D/10000 이며, 여기서 D는 mm로표현된실린더직경이다.
Abstract:
피스톤링 홈 및 링벨트가 형성된 크라운을 포함하고 있는 내연기관용 피스톤에 있어서, 크라운은 피스톤축에 대해 횡방향으로 배열되며 축방향으로 뻗은 2개의 웨브에 의해서 연결된 피스톤핀보스에 의해 지지되며 각각의 평평한 웨브 및 핀보스와 연결된지지 리브에 의해서 또한 지지되되 지지 리브는 크라운 하면으로부터 축방향으로 뻗어있고 평면의 웨브에 대해서 횡방향으로 뻗어있는 피스톤이 개시되어 있다. 피스톤은 관절연결 또는 단일금속 구성일 수 있다.
Abstract:
A variable lubricant vane pump (10) for providing pressurized lubricant, with a static pump housing (14) defining a pump inlet (22) and a pump outlet (24), a shiftable control ring (36) comprising at least one slide support surface (54a, 54b) and a rotatable pump rotor (34) comprising several rotor vanes (46) rotating within the control ring (36), the control ring (36) being shiftable with respect to the pump rotor (34) to thereby vary the eccentricity of the control ring (36) with respect to the pump rotor (34) for controlling the volumetric pump performance, and the static pump housing (14) comprising a static control ring housing body (18) radially surrounding and supporting the shiftable control ring (36), and two static pump housing lids (16,20) axially supporting the control ring housing body (18) and the shiftable control ring (36), wherein at least the control ring housing body (18) is provided of plastic, and wherein the plastic control ring housing body (18) comprises at least one metal slide support pad (52a,52b) being fixed to the plastic control ring housing body (18) and supporting the control ring slide support surface (54a, 54b) thereby providing a friction bearing for the shiftable control ring.
Abstract:
The invention relates to an assembly (100, 200) consisting of a piston (10, 110, 210) made of a steel-based material, and a crankcase (140, 240) made of an aluminum-based material, for an internal combustion engine. Said piston (10, 110, 210) comprises a piston head (11) and a piston skirt (16), said piston head (11) having a peripheral annular part (15) and in the region of said annular part (15), a peripheral cooling channel (23). The piston skirt (16) comprises piston bores (17) provided with hub bores (18), which are arranged over the hub connections (19) on the underside (11a) of the piston head (11). Said piston hubs (17) are interconnected over the running surfaces (21, 22). According to the invention, at least one bore (24a, 24b, 24c, 24d) which is closed towards the outside is arranged between a running surface (21, 22) and a hub bore (18) such that the at least one bore (24a, 24b, 24c, 24d) leads into the cooling channel (23), and that the cooling channel (23) and the at least one bore (24a, 24b, 24c, 24d) contain a coolant (127, 227) in the form of a metal or a metal alloy which have a low-melting point.
Abstract:
Die vorliegende Erfindung betrifft einen Kolben (10) für einen Verbrennungsmotor, mit einem Kolbenkopf (11) und einem Kolbenschaft (16), wobei der Kolbenkopf (11) eine umlaufende Ringpartie (15) sowie im Bereich der Ringpartie (15) einen umlaufenden Kühlkanal (23) aufweist, wobei der Kolbenschaft (16) mit Nabenbohrungen (18) versehene Kolbennaben (17) aufweist, die über Nabenanbindungen (19) an der Unterseite (11a) des Kolbenkopfes (11) angeordnet sind, wobei die Kolbennaben (17) über Laufflächen (21, 22) miteinander verbunden sind. Erfindungsgemäß ist vorgesehen, dass die im Bereich der Ringpartie (15) verlaufende Wand (23a) des Kühlkanals (23) eine Neigung aufweist und mit der Kolbenmittelachse (M) einen spitzen Winkel (a) einschließt, dass mindestens eine nach außen verschlossene Bohrung (24a, 24b, 24c, 24d) vorgesehen ist, die zwischen einer Lauffläche (21, 22) und einer Nabenbohrung (18) angeordnet ist, dass die mindestens eine Bohrung (24a, 24b, 24c, 24d) in den Kühlkanal (23) mündet, und dass der Kühlkanal (23) und die mindestens eine Bohrung (24a, 24b, 24c, 24d) ein Kühlmittel (27) in Form eines niedrig schmelzenden Metalls oder einer niedrig schmelzenden Metalllegierung enthalten.