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:
Aug. 13, 2019
Filed:
May. 24, 2016
Yanmar Co., Ltd., Osaka-shi, Osaka-fu, JP;
Ryoichi Hagiwara, Osaka, JP;
Masayoshi Doi, Osaka, JP;
Taishi Murakami, Osaka, JP;
Tatsuro Ohsara, Osaka, JP;
Osamu Yamagishi, Osaka, JP;
YANMAR CO., LTD., Osaka, JP;
Abstract
An engine device () including: an intake manifold () configured to supply air into a cylinder (), an exhaust manifold () configured to output exhaust gas from the cylinder; a gas injector () which mixes a gaseous fuel with the air supplied from the intake manifold; and a main fuel injection valve () configured to inject a liquid fuel into the cylinder for combustion. At the time of switching the operation mode from one to another between a gas mode and a diesel mode, a supply amount of a first fuel to be supplied in a post-switching operation mode is increased to a switching threshold value through an increase control which monotonously increases the supply amount, and then is controlled by a speed-governing control based on the engine rotation number. The switching threshold value is set based on the engine rotation number or the engine load.