公开(公告)号：US20130055986A1

公开(公告)日：2013-03-07

申请号：US13602148

申请日：2012-09-01

Applicant: Luigi P Tozzi ,  Maria-Emmanuella Sotiropoulou

Inventor： Luigi P Tozzi ,  Maria-Emmanuella Sotiropoulou

IPC: F02B19/12

CPC classification number: F02B19/12 ,  F02B19/08 ,  F02B19/1061 ,  F02B19/18 ,  F02M25/10 ,  F02P9/00 ,  F02P13/00 ,  H01T13/54 ,  Y02T10/125

Abstract: A prechamber spark plug may have a prechamber having a pre-determined aspect ratio and hole pattern to achieve particular combustion performance characteristics. The aspect ratio and hole pattern may induce a rotational flow of fuel-air in-filling streams inside the prechamber volume. The rotational flow of the fuel-air mixture may include both radial flow and axial flow characteristics based on the aspect ratio and hole pattern. Axial flow characteristics can include a first axial direction proximate the periphery of the rotational flow and a counter second axial direction approaching the center of the rotational flow. The radial and axial flow characteristics may further include radial air-fuel ratio stratification and/or axial air-fuel ratio stratification. The rotational flow, the radial flow and the axial flow may be adjusted by alteration of the aspect ratio and hole pattern to achieve particular combustion performance characteristics in relation to a wide variety of spark gap geometries.

公开(公告)号：US09004042B2

公开(公告)日：2015-04-14

申请号：US13602148

申请日：2012-09-01

Applicant: Luigi P Tozzi ,  Maria-Emmanuella Sotiropoulou

Inventor： Luigi P Tozzi ,  Maria-Emmanuella Sotiropoulou

IPC: F02B19/00 ,  F02P9/00 ,  F02P13/00 ,  H01T13/54 ,  F02B19/10 ,  F02B19/12

CPC classification number: F02B19/12 ,  F02B19/08 ,  F02B19/1061 ,  F02B19/18 ,  F02M25/10 ,  F02P9/00 ,  F02P13/00 ,  H01T13/54 ,  Y02T10/125

Abstract: A prechamber spark plug may have a prechamber having a pre-determined aspect ratio and hole pattern to achieve particular combustion performance characteristics. The aspect ratio and hole pattern may induce a rotational flow of fuel-air in-filling streams inside the prechamber volume. The rotational flow of the fuel-air mixture may include both radial flow and axial flow characteristics based on the aspect ratio and hole pattern. Axial flow characteristics can include a first axial direction proximate the periphery of the rotational flow and a counter second axial direction approaching the center of the rotational flow. The radial and axial flow characteristics may further include radial air-fuel ratio stratification and/or axial air-fuel ratio stratification. The rotational flow, the radial flow and the axial flow may be adjusted by alteration of the aspect ratio and hole pattern to achieve particular combustion performance characteristics in relation to a wide variety of spark gap geometries.

Abstract translation: 预燃烧器火花塞可以具有预制长宽比和孔图案的预制室，以实现特定的燃烧性能特征。 长宽比和孔图案可以引起在前房体内的燃料 - 空气填充流的旋转流动。 基于长宽比和孔图案，燃料 - 空气混合物的旋转流可以包括径向流动和轴向流动特性。 轴向流动特性可以包括靠近旋转流的周边的第一轴向方向和接近旋转流的中心的相反的第二轴向方向。 径向和轴向流动特性还可包括径向空燃比分层和/或轴向空燃比分层。 可以通过改变纵横比和孔图案来调节旋转流量，径向流动和轴向流动，以实现与各种火花隙几何形状相关的特定燃烧性能特征。