Compression ring for pistons
    5.
    发明授权

    公开(公告)号:US10047864B2

    公开(公告)日:2018-08-14

    申请号:US15267843

    申请日:2016-09-16

    摘要: A piston ring having a ring-shaped body with at least one internal wall surface configured to bear against the piston, an exterior wall surface, and at least a top wall surface extending from the exterior wall surface to the at least one internal wall surface and capable of intersecting a top surface of the piston to form an extended top surface of the piston when mounted on the piston. The top wall surface of the ring cooperates with the piston top surface to form a reservoir that collects liquid scraped off the cylinder wall, thereby reducing or eliminating blow-by of contaminants to the crankcase.

    HOMOGENEOUS CHARGE COMPRESSION IGNITION (HCCI-TYPE) COMBUSTION SYSTEM FOR AN ENGINE AND POWERTRAIN USING WET-ALCOHOL AS A FUEL AND INCLUDING HOT ASSIST IGNITION

    公开(公告)号:US20210285360A1

    公开(公告)日:2021-09-16

    申请号:US17199800

    申请日:2021-03-12

    IPC分类号: F02B3/06 F02B75/28

    摘要: An internal combustion-type engine or powertrain that is capable of burning wet-alcohol fuel mixture and including a piston reciprocating within a cylinder attached to a cylinder head and connecting to a crank shaft via a connecting rod. An intake cam and valve is mounted within an intake port formed in the cylinder head and an exhaust cam and valve is mounted within an exhaust port also formed in the cylinder head. A pressurized fuel source is introduced into the cylinder by a fuel injector and the percentage of water in the alcohol/water mix operates to prolong the cylinder pressure in order to increase a mean effective pressure (IMEP), leading to a higher torque (improved Brake Mean Effective Pressure—BMEP) of the engine via a longer pressure pulse attained during the period of preferred mechanical advantage of the crank-arm of the engine.