公开(公告)号：US20180106230A1

公开(公告)日：2018-04-19

申请号：US15296750

申请日：2016-10-18

Applicant: Caterpillar Inc.

Inventor： Josenia Y. Gerdes ,  Perry D. Converse ,  Ed Schroeder ,  Robert Murray ,  Vijay Janardhan

IPC: F02N9/04 ,  F02B63/04 ,  F02D25/00 ,  H02P9/04 ,  H02K7/18

CPC classification number: F02N9/04 ,  F02B63/04 ,  F02D25/00 ,  F02N2300/2011 ,  F02N2300/302 ,  H02K7/1815 ,  H02P9/04

Abstract: A power system is provided that includes a plurality of engines and a compressed air source in communication with the plurality of engines and configured to assist in starting the engines. A plurality of engine controllers are provided each associated with a respective one of the plurality of engines. The engine controllers are communicatively linked with each other and upon receipt of a signal to start the plurality of engines are configured to stagger the starts of the plurality of engines according to a predetermined order and to apply an air start system charge delay timer before starting an individual engine when the compressed air source is in a first state in which the compressed air source is unable to assist starting at least one of the plurality of engines.

公开(公告)号：US20180051636A1

公开(公告)日：2018-02-22

申请号：US15243158

申请日：2016-08-22

Applicant: Caterpillar Inc.

Inventor： Yanchai Zhang ,  Michael A. Snopko ,  Perry D. Converse ,  Vijay Janardhan ,  Insu Chang

IPC: F02D25/04 ,  F01N3/20 ,  H02P9/00

CPC classification number: F02D25/04 ,  F01N3/2066 ,  F01N3/208 ,  F01N11/00 ,  F01N2550/02 ,  F01N2590/02 ,  F01N2590/10 ,  F01N2590/11 ,  F01N2610/02 ,  F01N2900/08 ,  F01N2900/10 ,  F01N2900/1602 ,  F01N2900/1621 ,  F01N2900/1806 ,  F01N2900/1812 ,  F02D25/00 ,  F02D2250/36 ,  H02P9/008

Abstract: A power system for powering a load is provided. The power system includes a plurality of power sources with each power source including an engine. A SCR system is associated with the engine of at least one of the plurality of power sources. A controller is in communication with the plurality of power sources. The controller is configured to receive engine operation information, emission output information associated with each engine and conversion efficiency information associated with the SCR system and selectively apportion the power demand presented by the load between each of the plurality of power sources based on minimizing total engine emissions across the plurality of power sources and using the engine operation information, the emission output information and the conversion efficiency information.

公开(公告)号：US20170283024A1

公开(公告)日：2017-10-05

申请号：US15087182

申请日：2016-03-31

Applicant: Caterpillar Inc.

Inventor： Perry D. Converse ,  Theodore E. Wiersema

IPC: B63H21/21 ,  B63J3/02 ,  H02J5/00

CPC classification number: B63H21/21 ,  B63H2021/216 ,  B63J3/00 ,  B63J3/02 ,  B63J2003/002 ,  H02J5/00

Abstract: A system for limiting power to a plurality of on-line consumers includes an operating characteristic sensor associated with each of a plurality of prime movers and a controller. The controller is configured to determine a maximum torque capability of each of the plurality of prime movers, determine the available electrical power response of each of the plurality of generators, determine a total available electrical power response, and determine a total maximum power demand. The controller then compares the total available electrical power response to the total maximum power demand, and upon the total maximum power demand exceeding the total available electrical power response, limits power to the plurality of on-line consumers to no more than the total available electrical power response.