公开(公告)号：US10690069B2

公开(公告)日：2020-06-23

申请号：US15760169

申请日：2016-05-24

申请人： Yanmar Co., Ltd.

发明人： Ryoichi Hagiwara ,  Kazuteru Toshinaga ,  Masayoshi Doi ,  Taishi Murakami ,  Tatsuro Ohsara ,  Osamu Yamagishi

IPC分类号： F02D41/00 ,  F02D19/06 ,  F02D41/30 ,  F02D19/10 ,  F02D41/40 ,  F02D29/02 ,  B63H21/14

摘要： An engine device of the present invention includes 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 from a gas mode in which the gaseous fuel is supplied into the cylinder to a diesel mode in which the liquid fuel is supplied into the cylinder, a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.

公开(公告)号：US11111866B2

公开(公告)日：2021-09-07

申请号：US16884171

申请日：2020-05-27

申请人： YANMAR CO., LTD.

发明人： Ryoichi Hagiwara ,  Kazuteru Toshinaga ,  Masayoshi Doi ,  Taishi Murakami ,  Tatsuro Ohsara ,  Osamu Yamagishi

IPC分类号： F02D41/00 ,  F02D19/06 ,  F02D41/30 ,  F02D19/10 ,  F02D41/40 ,  F02D29/02 ,  B63H21/14

摘要： 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 from a gas mode in which the gaseous fuel is supplied into the cylinder to a diesel mode in which the liquid fuel is supplied into the cylinder, a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.

公开(公告)号：US10393035B2

公开(公告)日：2019-08-27

申请号：US15760887

申请日：2016-05-24

申请人： Yanmar Co., Ltd.

发明人： Ryoichi Hagiwara ,  Masayoshi Doi ,  Taishi Murakami ,  Tatsuro Ohsara ,  Osamu Yamagishi

IPC分类号： B63H21/00 ,  B63H21/21 ,  B63H21/32 ,  F02D19/06 ,  F02D19/10 ,  F02D31/00 ,  F02D41/00 ,  F02D41/30 ,  F02M37/00

摘要： 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 the other between a gas mode and a diesel mode, an instant switching to the diesel mode is executed when the engine rotation number is determined to approach the upper limit value which leads to an emergency stop of the engine device.

公开(公告)号：US10378461B2

公开(公告)日：2019-08-13

申请号：US15760890

申请日：2016-05-24

申请人： Yanmar Co., Ltd.

发明人： Ryoichi Hagiwara ,  Masayoshi Doi ,  Taishi Murakami ,  Tatsuro Ohsara ,  Osamu Yamagishi

IPC分类号： B63H21/00 ,  F02D19/06 ,  F02D41/30 ,  F02D41/38 ,  F02D31/00 ,  F02D41/00 ,  F02D19/10 ,  F02B61/04 ,  F02D41/08

摘要： An engine device (21) including: an intake manifold (67) configured to supply air into a cylinder (77), an exhaust manifold (44) configured to output exhaust gas from the cylinder; a gas injector (98) which mixes a gaseous fuel with the air supplied from the intake manifold; and a main fuel injection valve (79) 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.