公开(公告)号：US20140130778A1

公开(公告)日：2014-05-15

申请号：US14159831

申请日：2014-01-21

Applicant: Caterpillar Inc.

Inventor： Daniel R. Puckett ,  Steven T. Grant ,  Joshua W. Steffen ,  Benjamin A. Nash

IPC: F02M39/00

CPC classification number: F02M43/00 ,  F02D19/022 ,  F02D19/0647 ,  F02D41/0025 ,  F02D2200/06 ,  F02D2250/18 ,  F02M21/0215 ,  F02M21/0221 ,  F02M21/0245 ,  F02M21/06 ,  Y02T10/32 ,  Y02T10/36

Abstract: A method of operating an engine is disclosed. The method includes estimating an operational status of a cryogenic pump selectively driven by the engine. The cryogenic pump is configured to pressurize a liquefied gaseous fuel. The method also includes estimating a power requirement of the cryogenic pump. The method further includes determining whether the engine is operating on a lug curve. Moreover, the method includes providing additional fuel to the engine in order to increase an engine power beyond the lug curve prior to an operation of the cryogenic pump. The increase in engine power is at least equal to the power requirement of the cryogenic pump.

Abstract translation: 公开了一种操作发动机的方法。 该方法包括估计由发动机选择性驱动的低温泵的操作状态。 低温泵构造成对液化的气态燃料加压。 该方法还包括估计低温泵的功率需求。 该方法还包括确定发动机是否在凸耳曲线上操作。 此外，该方法包括向发动机提供额外的燃料，以便在低温泵的操作之前增加引擎功率超过凸耳曲线。 发动机功率的增加至少等于低温泵的功率要求。