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:
May. 14, 2013
Filed:
Mar. 23, 2010
Takehide Kitagawa, Oyama, JP;
Yasukuni Kawashima, Oyama, JP;
Shuuji Hori, Oyama, JP;
Daisuke Kozuka, Oyama, JP;
Takehide Kitagawa, Oyama, JP;
Yasukuni Kawashima, Oyama, JP;
Shuuji Hori, Oyama, JP;
Daisuke Kozuka, Oyama, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
An engine includes a variable geometry turbocharger, an EGR valve device, a hydraulic servo drive device that drives the variable geometry turbocharger, a hydraulic servo drive device that drives the EGR valve device, an electronic proportional control valve (EPC valve) that supplies pilot pressure oil to the hydraulic servo drive device, and an electronic proportional control valve (EPC valve) that supplies pilot pressure oil to the hydraulic servo drive device, the EPC valves being attached to the EGR valve device.