公开(公告)号：US20160281615A1

公开(公告)日：2016-09-29

申请号：US14669058

申请日：2015-03-26

Applicant: General Electric Company

Inventor： Paul Lloyd FLYNN ,  Ganesha Koggu NAIK ,  Thomas Michael LAVERTU ,  Victor Manuel SALAZAR ,  Jeffrey David WILLIS

IPC: F02D19/06

CPC classification number: F02D19/0642 ,  F02D13/0234 ,  F02D13/0269 ,  F02D19/0647 ,  F02D19/0673 ,  F02D19/08 ,  F02D35/025 ,  F02D41/0002 ,  F02D41/0025 ,  F02D41/0027 ,  F02D2041/001 ,  F02D2200/0414 ,  F02D2200/1002 ,  F02D2200/101 ,  F02D2200/703 ,  Y02T10/142 ,  Y02T10/18 ,  Y02T10/36 ,  Y02T10/42

Abstract: Various methods and systems are provided for a multi-fuel capable engine. In one example, a system comprises an engine having at least one cylinder controlled via an intake valve, a first fuel system to deliver liquid fuel and a second fuel system to deliver gaseous fuel to the at least one cylinder, a variable valve timing actuation system to adjust one or more of an opening or a closing timing of the intake valve, and a controller. The controller is configured to, during a liquid fuel only mode, adjust the variable valve timing actuation system to close the intake valve at a first timing based at least on engine load, and during a multi-fuel mode, adjust the variable valve timing actuation system to close the intake valve at a second timing.

Abstract translation: 为多燃料发动机提供了各种方法和系统。 在一个示例中，系统包括具有经由进气阀控制的至少一个气缸的发动机，用于输送液体燃料的第一燃料系统和用于将气体燃料输送到至少一个气缸的第二燃料系统，可变气门正时致动系统 以调节进气门的打开或关闭正时中的一个或多个以及控制器。 控制器构造成在仅液体燃料模式期间，至少基于发动机负荷在第一定时调节可变气门正时致动系统以关闭进气门，并且在多燃料模式期间，调节​​可变气门正时致动 系统在第二时间关闭进气阀。