公开(公告)号：US20160237942A1

公开(公告)日：2016-08-18

申请号：US15137229

申请日：2016-04-25

Applicant: Caterpillar Inc.

Inventor： Scott Byron Fiveland ,  Andrew Loetz ,  Michael Flory ,  Joel Hiltner

IPC: F02D41/26 ,  F02D41/14

CPC classification number: F02D41/1461 ,  F02D19/06 ,  F02D35/023 ,  F02D2200/1015 ,  Y02T10/36

Abstract: A fuel control system for an engine is provided. The fuel control system includes a first sensor configured to generate a signal indicative of a pressure within a cylinder of the engine, a second sensor configured to generate a signal indicative of an amount of Nitrous Oxide (NOx), a fuel reformer, an Air Fuel Ratio (AFR) unit, and a controller. The controller is configured to receive the signals indicative of the pressure and the amount of NOx. The controller is configured to determine a Coefficient of Variation (COV) of Indicated Mean Effective Pressure (IMEP) and compare the COV of IMEP and the amount of NOx with a threshold combustion stability and a threshold amount of NOx respectively. The controller is further configured to regulate at least one of the fuel reformer and the AFR unit to control at least one of the combustion stability and the amount of NOx.

Abstract translation: 提供了一种用于发动机的燃料控制系统。 燃料控制系统包括构造成产生指示发动机气缸内的压力的信号的第一传感器，配置成产生指示一氧化二氮（NOx）量的信号的第二传感器，燃料重整器，空气燃料 比率（AFR）单位和控制器。 控制器被配置为接收指示压力和NOx量的信号。 控制器被配置为确定指示平均有效压力（IMEP）的变异系数（COV），并将IMEP的COV和NOx的量分别与阈值燃烧稳定性和阈值量进行比较。 控制器进一步构造成调节燃料重整器和AFR单元中的至少一个以控制燃烧稳定性和NOx的量中的至少一个。