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.:
Date of Patent:
Jun. 11, 2013
Filed:
Jun. 23, 2010
Shohei Kamiya, Kasumigaura, JP;
Kensuke Sato, Ushiku, JP;
Hidenobu Tsukada, Ushiku, JP;
Kazuhiro Shibamori, Joso, JP;
Shohei Kamiya, Kasumigaura, JP;
Kensuke Sato, Ushiku, JP;
Hidenobu Tsukada, Ushiku, JP;
Kazuhiro Shibamori, Joso, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
An exhaust gas treatment filter removes particulate matter from exhaust gas of a diesel engine. The particulate matter which accumulates on the filter is removed by a manual regeneration system that can simply be controlled. After a manual regeneration switchis shifted to an ON-position, a load control sectionkeeps at least one of the revolution speed N of an engine, the displacement volume q and discharge pressure P of a hydraulic pressure pumpat a corresponding first target value (N, q, or P) or second target value (N, q, or P) depending on a temperature of the cooling water in relation to a flame-out prevention temperature T. A regeneration control sectionstarts the compulsory regeneration after the manual regeneration switch has been shifted to the ON-position and when the cooling water temperature is equal to or higher than T