Patent · US Active

Internal combustion engine which can be operated with liquid and with gaseous fuel and a method for operating an internal combustion engine of this kind

US9631548B2 · kind B2 · utility

2Cited by

4References

16Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Carsten Weber · Aalen, DE
Ulrich Kramer · Bensberg, DE
Martin Wirth · Hitzendorf, AT

Key dates

Filing date	Sep 19, 2013
Grant date	Apr 25, 2017
Priority date	—
Expiry date	Oct 16, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/30
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The application describes a system for an engine comprising a direct injection nozzle for injecting gaseous fuel into a cylinder of an engine in a second operating mode; an intake injection nozzle for injecting liquid fuel into an intake port of the engine in a first operating mode; and a valve gear suitable to adjust timing of opening and closing of an inlet valve. Preferential injection of a gaseous fuel such as compressed natural gas directly into the cylinder increases efficiency and allows for reduced heat exposure to the lesser used liquid gas injectors mounted in the intake port, reducing coking of these injectors.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.