公开(公告)号：WO1994007016A1

公开(公告)日：1994-03-31

申请号：PCT/BR1993000034

申请日：1993-09-17

Applicant: METAL LEVE S/A. INDUSTRIA E COMÉRCIO ,  BROWN, Alan, Stanton ,  LEITES, José, Manoel, Martins ,  CARMO SOUZA RIBEIRO, José do

Inventor： METAL LEVE S/A. INDUSTRIA E COMÉRCIO

IPC: F02F03/00

CPC classification number: F02F3/027

Abstract: Piston for an internal combustion engine, in which there is reduced the passage of combustion gases into the lower region of the engine, thereby presenting a reduction in the consumption of lubricating oil, by providing "J" shaped circumferential recesses (13), inclined at the longitudinal face (10) of the piston (2), said recesses being located between the sealing rings (6 and 7), said recesses advantageously increasing the volume of the compartment (11) defined by said sealing rings (6 and 7) and allowing the balance between the pressures originated from the combustion and the pressures generated due to the dynamic of the gases, during the downward movement of the piston (2) towards the lower dead center of the engine (not shown).

Abstract translation: 一种用于内燃机的活塞，其中通过提供“J”形周向凹部（13），其中使燃烧气体进入发动机的下部区域，从而降低润滑油的消耗，倾斜于 活塞（2）的纵向面（10），所述凹槽位于密封环（6和7）之间，所述凹槽有利地增加由所述密封环（6和7）限定的隔间（11）的体积， 允许在活塞（2）朝向发动机（未示出）的下死点向下移动期间来自燃烧的压力和由于气体的动态而产生的压力之间的平衡。

公开(公告)号：WO1994015088A1

公开(公告)日：1994-07-07

申请号：PCT/BR1993000041

申请日：1993-10-29

Applicant: METAL LEVE S/A. INDUSTRIA E COMÉRCIO ,  DAXER, Georg ,  LEITES, José, Manoel, Martins

Inventor： METAL LEVE S/A. INDUSTRIA E COMÉRCIO

IPC: F02F03/26

CPC classification number: F02B23/0603 ,  F02B23/0696 ,  F02F3/045 ,  F05C2201/021 ,  F05C2253/16 ,  Y02T10/125

Abstract: Piston with a reinforcing insert, presenting a top face (11) with a recessed combustion chamber (12) provided with a lateral peripheral wall, defined by the annular insert (20), which presents an internal end face (24) with a radial extension (d1) that is substantially smaller than the radial extension (d2) of the opposite external end face (22) of said annular insert (20), the radial thickness of the insert (20) varying along the profile of its external peripheral face (23), in order to maintain a value necessary to meet the requirements of structural reinforcement of the piston (10), at the region where the insert (20) is applied.

Abstract translation: 具有加强插入件的活塞具有设置有由所述环形插入件（20）限定的侧壁周边壁的凹入式燃烧室（12）的顶面（11），所述侧壁周边壁具有径向延伸部 （d1），其基本上小于所述环形插入件（20）的相对的外端面（22）的径向延伸部（d2），所述插入件（20）的径向厚度沿着其外周面 23），以便在应用插入件（20）的区域处保持满足活塞（10）的结构加强要求所必需的值。