公开(公告)号：US20250012240A1

公开(公告)日：2025-01-09

申请号：US18711522

申请日：2022-11-21

Applicant: LIEBHERR-COMPONENTS DEGGENDORF GMBH

Inventor： Mario D'ONOFRIO ,  Giovanni CORBINELLI ,  Francois MASSON ,  Richard PIRKL

IPC: F02M21/02 ,  F02M55/04

Abstract: The present invention relates to a device for direct injection of a gaseous fuel, in particular hydrogen, which device comprises: a pressure-control unit which is designed to convert a supplied variable pressure level of the gaseous fuel into a fixed constant output pressure level; a distributor unit which is connected to at least one injector for direct injection of the gaseous fuel, which has been guided through the pressure-control unit, into a combustion chamber; and a fluid connection between the pressure-control unit and the distributor unit in order to guide the gaseous fuel at a constant output pressure downstream towards the distributor unit. The device is characterized in that a flow-control valve is disposed along the fluid connection and designed to adjust the constant output pressure level of the gaseous fuel to a desired target pressure not exceeding the output pressure level.

公开(公告)号：US20200032732A1

公开(公告)日：2020-01-30

申请号：US16522631

申请日：2019-07-25

Applicant: Liebherr-Components Deggendorf GmbH

Inventor： Brice PETITJEAN, JR. ,  Francois MASSON ,  Josef ASPELMAYR

IPC: F02D41/26 ,  F02M55/02 ,  F02M63/02 ,  F02D41/40

Abstract: The present invention discloses a method of operating an internal combustion engine comprising a controllable injector for injecting fuel into a combustion chamber, the injector communicating with a fuel accumulator through which it is supplied with fuel, the method comprising the following steps: determining a first pressure value of the pressure in the fuel accumulator on the basis of a first pressure measurement, determining a second pressure value of the pressure in the fuel accumulator on the basis of a second pressure measurement carried out after the first pressure measurement, and determining an injector opening duration depending on the first and the second pressure value.