公开(公告)号：US20200248638A1

公开(公告)日：2020-08-06

申请号：US16269358

申请日：2019-02-06

Applicant: Caterpillar Inc.

Inventor： Matthew J. ENGFEHR ,  Asha L. PAI ,  Roderick S. ZEHRUNG ,  Derek P. SAMSEL ,  Brett M. NEE ,  Joshua PERKO

IPC: F02D19/06 ,  F02D19/10 ,  F02D41/00 ,  F02D41/38 ,  F02D41/22 ,  G01L13/00 ,  G01F25/00 ,  G01F23/18

Abstract: A gaseous fuel supply system for an internal combustion engine may include a storage tank for storing liquefied gaseous fuel and supplying the fuel to the engine. The system may also include a liquid level sensor for measuring a level value of the liquefied gaseous fuel in the storage tank and a pressure sensor for measuring a pressure value of gaseous fuel in the fuel supply system. The system may further include a controller. The controller may be configured to: monitor a pressure signal of the pressure sensor indicating the pressure value and a tank level signal of the liquid level sensor indicating the level value; store the level value when the pressure value indicates the storage tank is empty; store the level value when the pressure value or the level value indicates the storage tank is full; and determine a calibrated level range based on the stored level values.