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公开(公告)号：US10344686B2
公开(公告)日：2019-07-09
申请号：US15600965
申请日：2017-05-22
发明人： Niels Kjemtrup , Stefan Mayer , Peter Hagen
IPC分类号： F02D19/06 , F02D19/10 , F02D29/06 , F02D41/00 , F02D41/38 , F02M43/02 , F02M43/04 , F02M55/00 , F02M57/02 , F02M59/00 , F02M59/46 , F02M61/00 , F02M63/00
摘要： A large two-stroke turbocharged compression-ignited internal combustion crosshead engine with a plurality of cylinders has at least one pressure booster for each cylinder for boosting fuel pressure, two or more electronically controlled fuel valves for each cylinder with an inlet of the two or more electronically controlled fuel valves being connected to an outlet of the at least one pressure booster. An electronic control unit is connected to the at least one pressure booster and the two or more electronically controlled fuel valves. The electronic control unit is configured to determine a start time for a fuel injection event, activate the at least one pressure booster ahead of the determined start time and pen the two or more electronically controlled fuel valves at the determined start time.
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公开(公告)号：US10550811B2
公开(公告)日：2020-02-04
申请号：US15569591
申请日：2016-04-18
发明人： Johannes Flarup
摘要： A fuel valve for injecting fuel into the combustion chamber of a large two-stroke self-igniting internal engine combustion engine, with a valve needle that is resiliently biased towards a valve seat. The effective pressure surface that causes fuel pressure to urge the valve needle in the opening direction increases significantly when the valve needle has lift from the valve seat. A supplementary effective pressure surface is provided on the valve needle. The supplementary effective pressure surface creates a force urging the valve needle towards the valve seat when the supplementary effective pressure surface is exposed to fuel pressure.
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公开(公告)号：US10400683B2
公开(公告)日：2019-09-03
申请号：US16115869
申请日：2018-08-29
发明人： Niels Kjemtrup , Stefan Mayer , Peter Hagen
IPC分类号： F02D19/06 , F02D19/10 , F02D29/06 , F02D41/00 , F02D41/38 , F02M43/02 , F02M43/04 , F02M55/00 , F02M57/02 , F02M59/00 , F02M59/46 , F02M61/00 , F02M63/00
摘要： A large two-stroke turbocharged compression-ignited internal combustion crosshead engine with a plurality of cylinders has at least one pressure booster for each cylinder for boosting fuel pressure, two or more electronically controlled fuel valves for each cylinder with an inlet of the two or more electronically controlled fuel valves being connected to an outlet of the at least one pressure booster. An electronic control unit is connected to the at least one pressure booster and the two or more electronically controlled fuel valves. The electronic control unit is configured to determine a start time for a fuel injection event, activate the at least one pressure booster ahead of the determined start time and pen the two or more electronically controlled fuel valves at the determined start time.
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公开(公告)号：US10400682B2
公开(公告)日：2019-09-03
申请号：US16115794
申请日：2018-08-29
发明人： Niels Kjemtrup , Stefan Mayer , Peter Hagen
IPC分类号： F02D19/06 , F02D19/10 , F02D29/06 , F02D41/00 , F02D41/38 , F02M43/02 , F02M43/04 , F02M55/00 , F02M57/02 , F02M59/00 , F02M59/46 , F02M61/00 , F02M63/00
摘要： A large two-stroke turbocharged compression-ignited internal combustion crosshead engine with a plurality of cylinders has at least one pressure booster for each cylinder for boosting fuel pressure, two or more electronically controlled fuel valves for each cylinder with an inlet of the two or more electronically controlled fuel valves being connected to an outlet of the at least one pressure booster. An electronic control unit is connected to the at least one pressure booster and the two or more electronically controlled fuel valves. The electronic control unit is configured to determine a start time for a fuel injection event, activate the at least one pressure booster ahead of the determined start time and pen the two or more electronically controlled fuel valves at the determined start time.
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