公开(公告)号：US20150252695A1

公开(公告)日：2015-09-10

申请号：US14201611

申请日：2014-03-07

Applicant: Electro-Motive Diesel, Inc.

Inventor： Deep Bandyopadhyay ,  Vijaya Kumar

IPC: F01L13/08

CPC classification number: F01L13/08 ,  F01L1/08 ,  F02B25/04 ,  F02D13/0215 ,  F02D13/0249 ,  F02D19/10 ,  Y02T10/18 ,  Y02T10/36

Abstract: An engine control system having quick-open valve timing is disclosed. The engine may have a cylinder, a piston slidably disposed in the cylinder, and an exhaust valve configured to open and close an exhaust port. Operation of the engine may include directing air and fuel into the cylinder, and combusting the air and fuel to force the piston between a TDC position and a BDC position. Operation may further include cyclically opening and closing the exhaust valve during piston movement according to a first valve timing. Operation may also include receiving a signal indicative of a condition associated with pre-ignition of the air and fuel, and selectively opening and closing the exhaust valve according to a second valve timing, based at least on the signal. In the second valve timing, the exhaust valve may be moved from a closed position to a maximum lift position in a shorter amount of time than in the first valve timing.

Abstract translation: 公开了具有快开阀定时的发动机控制系统。 发动机可以具有气缸，可滑动地设置在气缸中的活塞和构造成打开和关闭排气口的排气阀。 发动机的操作可以包括将空气和燃料引入气缸，并且燃烧空气和燃料以迫使活塞在TDC位置和BDC位置之间。 操作可以进一步包括根据第一气门正时在活塞运动期间循环地打开和关闭排气阀。 操作还可以包括接收指示与空气和燃料的预点火有关的状况的信号，以及至少基于信号，根据第二气门正时选择性地打开和关闭排气门。 在第二气门正时，排气门可以在比第一气门正时更短的时间内从关闭位置移动到最大提升位置。

公开(公告)号：US20150198083A1

公开(公告)日：2015-07-16

申请号：US14154544

申请日：2014-01-14

Applicant: Electro-Motive Diesel Inc.

Inventor： Deep Bandyopadhyay ,  Vijaya Kumar

IPC: F02B43/04 ,  F01L31/08

CPC classification number: F02B43/04 ,  F01L31/08 ,  F02B2075/025 ,  F02D13/0203 ,  F02D19/0642 ,  F02D19/0689 ,  F02D19/0692 ,  F02D41/0025 ,  F02D41/0027 ,  Y02T10/18 ,  Y02T10/32 ,  Y02T10/36

Abstract: A method of operating a dual-fuel engine having a combustion chamber and at least one valve associated with the combustion chamber is disclosed. The method may include moving the at least one valve from a flow blocking position to a flow passing position during a power stroke of the dual-fuel engine, and injecting gaseous fuel into the combustion chamber. The method may also include selectively holding the at least one valve between the flow blocking position and the flow passing position during at least a portion of a compression stroke of the dual-fuel engine after an end of injection of the gaseous fuel, and releasing the at least one valve and allowing the at least one valve to move to the flow blocking position during the compression stroke. The method may further include injecting liquid fuel into the combustion chamber to ignite the gaseous fuel.

Abstract translation: 公开了一种操作具有燃烧室和与燃烧室相关联的至少一个阀的双燃料发动机的方法。 该方法可以包括在双燃料发动机的动力冲程期间将至少一个阀从流动阻挡位置移动到流动通过位置，并将气体燃料喷射到燃烧室中。 该方法还可以包括在气体燃料喷射结束之后在双燃料发动机的压缩冲程的至少一部分期间将流动阻挡位置和流动通过位置之间的至少一个阀选择性地保持，并释放 至少一个阀，并允许所述至少一个阀在压缩冲程期间移动到流动阻塞位置。 该方法还可以包括将液体燃料喷射到燃烧室中以点燃气体燃料。

公开(公告)号：US20140116386A1

公开(公告)日：2014-05-01

申请号：US13665727

申请日：2012-10-31

Applicant: ELECTRO-MOTIVE DIESEL INC

Inventor： Scott B. Fiveland ,  David T. Montgomery ,  Aaron G. Foege ,  Deep Bandyopadhyay

IPC: F02M69/04

CPC classification number: F02M21/0284 ,  F02D19/0642 ,  F02D19/0689 ,  F02M21/0245 ,  F02M21/0248 ,  Y02T10/32 ,  Y02T10/36

Abstract: A fuel system for an engine is disclosed. The fuel system may have a first fuel injector configured to inject a first stream of gaseous fuel radially into a combustion chamber of a cylinder of the engine through a first air intake port. The fuel system may also have a second fuel injector configured to inject a second stream of gaseous fuel radially into the combustion chamber through a second air intake port to collide with the first stream of gaseous fuel.

Abstract translation: 公开了一种用于发动机的燃料系统。 燃料系统可以具有第一燃料喷射器，该燃料喷射器构造成通过第一进气口将第一气态燃料流径向喷射到发动机气缸的燃烧室中。 燃料系统还可以具有第二燃料喷射器，该第二燃料喷射器构造成通过第二进气口将第二气态燃料流径向喷射到燃烧室中，以与第一气态燃料流碰撞。