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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10329737 B1

PDFFull Text
Date of Patent:
Jun. 25, 2019

Filed:

Feb. 22, 2016

Hybrid construction machine

Applicant:

Hitachi Construction Machinery Co., Ltd., Taito-ku, Tokyo, JP;

Inventors:

Masafumi Hita, Tsuchiura, JP;

Shinya Imura, Toride, JP;

Shinji Nishikawa, Kasumigaura, JP;

Assignee:

Hitachi Construction Machinery Co., Ltd., Tokyo, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Aaron L Troost

Assistant Examiner:

Paula L Schneider

Int. Cl.
CPC ...
B60K 6/46 (2007.10); E02F 9/20 (2006.01); E02F 9/26 (2006.01); B60K 25/00 (2006.01); B60K 25/02 (2006.01); B60W 10/04 (2006.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 10/30 (2006.01); B60W 20/00 (2016.01); B60W 50/14 (2012.01);
U.S. Cl.
CPC ...
E02F 9/2075 (2013.01); B60K 6/46 (2013.01); B60K 25/00 (2013.01); B60K 25/02 (2013.01); B60W 10/04 (2013.01); B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 10/30 (2013.01); B60W 20/00 (2013.01); B60W 50/14 (2013.01); E02F 9/2091 (2013.01); E02F 9/26 (2013.01); B60K 2025/005 (2013.01); B60K 2025/026 (2013.01); B60W 2050/146 (2013.01);
Abstract

An output command calculating section () of an HCU () restricts a battery discharge power from an electricity storage device () based upon a battery electricity storage rate (SOC) and a current square integrating rate (Risc) of the electricity storage device (). Thereby, the HCU () transfers from a normal mode (NMODE) to a low speed mode (LSMODE) to lower a movement speed of a hydraulic actuator. A monitor display amount calculating section () of the HCU () calculates a maximum speed reduction rate (DRs) based upon a battery discharge power limit value (Plim) and an engine output upper limit value (Pemax) from the output command calculating section (). A monitor device () displays a reduction rate of the movement speed of the hydraulic actuator in the low speed mode (LSMODE) based on the maximum speed reduction rate (DRs).

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