Patent · US Active

Method for requirement-based servicing of an injector

US11067024B2 · kind B2 · utility

1Cited by

6References

5Claims

0Family size

Assignee

MTU FRIEDRICHSHAFEN GMBH · DE

Inventors

Ion Madan · Tettnang, DE
Michael Mohr · Wuppertal, DE
Rolf Pfeifer · Oberuhldingen, DE
Patrick Stöckle · Friedrichshafen, DE

Key dates

Filing date	May 2, 2018
Grant date	Jul 20, 2021
Priority date	—
Expiry date	May 2, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M63/0225
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for requirement-based servicing of an injector in a common-rail system in which, during ongoing operation of the engine, a current operating point is stored as a function of the rail pressure and of the fuel injection mass, and the current operating point is multiplied by a damage factor and is stored as a reference injection cycle as a function of the rail pressure as well as of the fuel injection mass. A total reference injection cycle is calculated by forming sums over the reference injection cycles, and a load factor is calculated as a function of the total reference injection cycle and the permissible injection cycles, and the load factor is set as decisive for the servicing recommendation of the injector.

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