公开(公告)号：US20190186341A1

公开(公告)日：2019-06-20

申请号：US15844876

申请日：2017-12-18

Applicant: Caterpillar Inc.

Inventor： Aaron Ness ,  Jeff Howard ,  Sri Harsha Uddanda ,  Lucas Allen Burger

IPC: F02B23/06 ,  F02F3/28

CPC classification number: F02B23/0621 ,  F02B23/0672 ,  F02F3/28

Abstract: A piston comprises a crown portion with a contoured bowl having a reentrant surface extending from the top squish surface that connects to a lower sidewall surface that connects to a swirl pocket surface disposed adjacent the bottom bowl surface.

公开(公告)号：US09903264B1

公开(公告)日：2018-02-27

申请号：US15296181

申请日：2016-10-18

Applicant: Caterpillar Inc.

Inventor： Mary Louise Yeager ,  Lucas Allen Burger ,  Andrew Loetz ,  Brett Zook

IPC: F02B19/10 ,  F02D41/30 ,  F02B19/12 ,  F02B43/10 ,  F02D41/00 ,  F02D41/14

CPC classification number: F02B19/1085 ,  F02B19/12 ,  F02B43/10 ,  F02B2043/103 ,  F02D35/023 ,  F02D35/024 ,  F02D41/0027 ,  F02D41/1439 ,  F02D41/28 ,  F02D41/3094

Abstract: A control system for an engine cylinder having a pre-chamber and a main chamber includes a pressure sensor being provided in the pre-chamber, and a processor coupled to the pressure sensor. The processor is configured to measure pre-chamber pressure using the pressure sensor, determine a peak pre-chamber pressure from the measured pre-chamber pressure, calculate an estimated main chamber pressure corresponding to the peak pre-chamber pressure from at least one cylinder condition at ignition, calculate a pressure ratio of the peak pre-chamber pressure to the estimated main chamber pressure, calculate a fuel parameter for at least one of the pre-chamber and main chamber from the pressure ratio to achieve a desired pressure ratio, and generate a control signal to provide fuel to at least one of the pre-chamber and main chamber in accordance with the fuel parameter.

公开(公告)号：US10400663B2

公开(公告)日：2019-09-03

申请号：US15844876

申请日：2017-12-18

Applicant: Caterpillar Inc.

Inventor： Aaron Ness ,  Jeff Howard ,  Sri Harsha Uddanda ,  Lucas Allen Burger

IPC: F02F3/28 ,  F02B23/06

Abstract: A piston comprises a crown portion with a contoured bowl having a reentrant surface extending from the top squish surface that connects to a lower sidewall surface that connects to a swirl pocket surface disposed adjacent the bottom bowl surface.

公开(公告)号：US09915212B2

公开(公告)日：2018-03-13

申请号：US15066921

申请日：2016-03-10

Applicant: Caterpillar Inc.

Inventor： Lucas Allen Burger ,  Robert Jay Maxson

IPC: F02D41/06 ,  F02D19/08 ,  F02D41/00 ,  F02B43/10 ,  F02N11/08 ,  F02D35/02

CPC classification number: F02D41/0027 ,  F02B43/10 ,  F02D19/024 ,  F02D19/081 ,  F02D35/021 ,  F02D35/023 ,  F02D41/0082 ,  F02D41/062 ,  F02D41/065 ,  F02D2200/021 ,  F02D2200/0611 ,  F02D2200/101 ,  F02M21/0215 ,  F02N11/00 ,  F02N11/08 ,  Y02T10/32

Abstract: A control system is provided for use with an engine. The control system may have a plurality of fuel valves, at least one sensor, a starter motor, and a controller in communication with the plurality of fuel valves, the at least one sensor, and the starter motor. The controller may be configured to set at least a first of the plurality of fuel valves to a first admission setting, to set at least a second of the plurality of fuel valves to a second admission setting different from the first admission setting, and to cause the starter motor to crank the engine. The controller may also be configured to determine, based on the signal, which one of the first and second admission settings results in combustion initiation during cranking, and to responsively set all of the plurality of fuel valves to the one of the first and second admission settings.