公开(公告)号：US20190301408A1

公开(公告)日：2019-10-03

申请号：US15942668

申请日：2018-04-02

Applicant: Caterpillar Inc.

Inventor： Adam Dempsey ,  Kenth I. Svensson

IPC: F02M29/04 ,  B05B1/26

Abstract: A combustion system for an internal combustion engine includes combustion chamber that is defined between a cylinder head and a top surface of a piston. The combustion system also includes a fuel injector having an injector tip. The injector tip defines a nozzle disposed in fluid communication with the combustion chamber for dispensing a fuel jet into the combustion chamber. A bluff body is positioned within the combustion chamber such that an axis of the dispensed fuel jet is incident on an anterior portion of the bluff body proximal to the injector tip. The anterior portion has a contour that is adapted to split the dispensed fuel jet into at least two turbulent fuel streams and facilitate mixing of each fuel stream with an oxidant present in the combustion chamber.

公开(公告)号：US20200095920A1

公开(公告)日：2020-03-26

申请号：US16140871

申请日：2018-09-25

Applicant: Caterpillar Inc.

Inventor： Kenth I. Svensson ,  Jonathan W. Anders ,  Adam Dempsey

IPC: F02B23/06 ,  F02F3/26

Abstract: A piston for an internal combustion engine includes a crown portion having a bowl that includes a plurality of protrusions. Each of the plurality of protrusions includes a first side surface and a second side surface. Other features including at least one ledge formed between protrusions in segments, and a generally flat, inward facing surface on the protrusions may also be used.

公开(公告)号：US11236711B2

公开(公告)日：2022-02-01

申请号：US17019339

申请日：2020-09-13

Applicant: Caterpillar Inc.

Inventor： Adam Dempsey ,  Kenth I. Svensson

IPC: F02M29/04 ,  B05B1/26

Abstract: A combustion system for an internal combustion engine includes a cylinder wall; a cylinder head disposed at an end of the cylinder wall, an internal surface of the cylinder wall and the cylinder head defining a combustion chamber; a fuel injector having a discharge nozzle disposed within the combustion chamber and configured to discharge a fuel jet along a fuel jet axis; and a bluff body disposed within the combustion chamber, the fuel jet axis intersecting an exterior surface of the bluff body. The exterior surface defines a first aperture and a second aperture therethrough, and an interior surface of the bluff body defines a first flow passage extending from the first aperture to the second aperture. The first aperture faces away from the fuel jet axis and the second aperture faces away from the fuel injector along the fuel jet axis.